JP7776754B2 - Light emitting device, light source device, and method for manufacturing the light emitting device - Google Patents

Description

This disclosure relates to a light-emitting device, a light source device, and a method for manufacturing a light-emitting device.

Bullet-shaped light-emitting devices are known as light-emitting devices. For example, Patent Document 1 discloses an LED module in which the curvature of the light-emitting surface in the zx plane is smaller than the curvature in the yz plane. Furthermore, Patent Document 2, for example, discloses an optical device in which a portion of the light emitted from a light-emitting element is totally reflected in a total reflection region, reflected by a light reflecting portion, and then emitted forward from the total reflection region.

JP 2010-040910 A Japanese Patent Application Laid-Open No. 2002-094129

An object of the embodiments of the present disclosure is to provide a light-emitting device, a light source device, and a method for manufacturing a light-emitting device that has a narrow light distribution.

The light-emitting device disclosed in the embodiment comprises a light-emitting element, a first lead on which the light-emitting element is mounted, a second lead electrically connected to the light-emitting element via a conductive member and disposed along a first direction away from the first lead, and a molded resin member that directly or indirectly covers the light-emitting element, wherein the molded resin member comprises a lens portion located above the light-emitting element, a fixing portion that fixes the first lead and the second lead, and an inclined portion located between the lens portion and the fixing portion, at least a portion of which is inclined and widens from the boundary with the lens portion toward the boundary with the fixing portion, and the light-emitting element is disposed within the fixing portion.

The method for manufacturing a light-emitting device disclosed in the embodiment includes the steps of: preparing an intermediate body in which a pair of first and second leads are repeatedly connected by a connecting portion, a light-emitting element is placed on the first lead of the connected body, and the light-emitting element and the second lead are electrically connected via a conductive member; filling a molding resin member material into a casting case having multiple recesses; and inserting the intermediate body into the recesses filled with the molding resin member material to form a molding resin member that directly or indirectly covers the light-emitting element for each pair of first and second leads. and a singulation process of cutting off the connecting portion of the connecting body to obtain the pair of first and second leads. In the process of filling the molded resin member material, the casting case has a lens portion opening on the bottom side of the casting case, a sloped portion opening that connects to the lens portion opening and slopes toward the opening side of the casting case, and a fixing portion opening that connects to the sloped portion opening and is positioned toward the opening side of the casting case. In the process of forming the molded resin member, the light-emitting element is positioned in the fixing portion opening.

The light source device disclosed in the embodiment includes a plurality of light-emitting devices and a mounting substrate on which the light-emitting devices are mounted, and the plurality of light-emitting devices are the light-emitting devices, and the inclined portions are arranged opposite each other in the first direction with the lens portion interposed therebetween, and the plurality of light-emitting devices are arranged in a direction parallel to the first direction.

Embodiments of the present disclosure can provide a light-emitting device, a light source device, and a method for manufacturing a light-emitting device with a narrow light distribution.

1 is a schematic perspective view illustrating a light source device in which light emitting devices according to an embodiment are arranged. 1 is a schematic perspective view illustrating a light emitting device according to an embodiment. FIG. 2 is a schematic perspective view illustrating a part of the light emitting device according to the embodiment. FIG. 2C is a schematic perspective view showing a part of FIG. 2B enlarged with a molded resin member removed. 1 is a schematic side view illustrating a part of a light emitting device according to an embodiment. 1 is a schematic side view illustrating a part of a light emitting device according to an embodiment. FIG. 2 is a schematic plan view illustrating a part of the light emitting device according to the embodiment. 3D is a schematic cross-sectional view illustrating a part of the cross section taken along line IVA-IVA in FIG. 3C, with the first lead, the second lead, and the conductive member removed. FIG. 4A is a schematic cross-sectional view illustrating a light beam from a light-emitting element. FIG. 10 is a schematic cross-sectional view illustrating a part of a first modified example of an inclined portion. FIG. 10 is a schematic cross-sectional view illustrating a part of a second modified example of an inclined portion. FIG. 5C is a schematic cross-sectional view illustrating a case where the cup portion is not provided in FIG. 5B. 10A and 10B are schematic perspective views illustrating modified examples of the fixing portion. 10A and 10B are schematic plan views illustrating modified examples of the fixing portion. 10 is a schematic plan view showing a modified example of the lens portion and the fixed portion in the second direction. FIG. 10 is a schematic plan view showing a modified example of the lens portion and the fixed portion in the second direction. FIG. 10 is a schematic plan view showing a modified example of the lens portion and the fixed portion in the second direction. FIG. 1 is a flowchart illustrating a method for manufacturing a light emitting device according to an embodiment. 10A and 10B are schematic side views illustrating a part of a connected body prepared for a step in a manufacturing method for a light emitting device according to an embodiment. 10 is a schematic side view illustrating a part of an intermediate body in which light emitting elements are placed on a connected body and connected to first and second leads by conductive members in a step of a manufacturing method for a light emitting device according to an embodiment. FIG. 10 is a schematic side view illustrating a part of a state in which an intermediate body is inserted into a recess in a casting case filled with a material for a mold resin member in a step of a manufacturing method of a light emitting device according to an embodiment. FIG. 10A and 10B are schematic side views illustrating a part of the light emitting device obtained by cutting off a connecting portion in a step of the manufacturing method of the light emitting device according to the embodiment and dividing the device into individual pieces. 1 is a schematic front view illustrating a light source device according to an embodiment. 2 is a schematic cross-sectional view illustrating an enlarged portion of the light source device according to the embodiment. FIG.

Embodiments are described below with reference to the drawings. However, the embodiments described below are illustrative of a light-emitting device and a method for manufacturing a light-emitting device that embody the technical concepts of the present disclosure, and are not limited to the following. Furthermore, unless otherwise specified, the dimensions, materials, shapes, and relative positions of the components described in the embodiments are merely illustrative and do not limit the scope of the present invention. The sizes and relative positions of components shown in the drawings may be exaggerated or simplified for clarity. Furthermore, in the embodiments, "cover" does not necessarily mean direct contact, but also includes indirect covering, for example, via another component. The X direction refers to the direction along the X axis, the Y direction refers to the direction along the Y axis, and the Z direction refers to the direction along the Z axis. The positive direction refers to the direction toward the + side in each of the X, Y, and Z directions. The negative direction refers to the direction toward the - side in each of the X, Y, and Z directions. The plane containing the X and Z directions is called the XZ plane, the plane containing the X and Y directions is called the XY plane, and the plane containing the Y and Z directions is called the YZ plane.

[Light-emitting device]
A light emitting device 100 according to an embodiment will be described with reference to FIGS. 1 to 4B. FIG. 1 is a schematic perspective view illustrating a light source device 200 in which light emitting devices 100 are arranged. FIG. 2A is a schematic perspective view illustrating the light emitting device 100. FIG. 2B is a schematic perspective view illustrating a portion of the light emitting device 100. FIG. 2C is a schematic perspective view illustrating an enlarged portion of FIG. 2B with the molded resin member 40 removed. FIG. 3A is a schematic side view illustrating a portion of the light emitting device 100. FIG. 3B is a schematic side view illustrating a portion of the light emitting device 100. FIG. 3C is a schematic plan view illustrating a portion of the light emitting device 100. FIGS. 4A and 4B are schematic cross-sectional views illustrating a portion of the cross section taken along line IVA-IVA in FIG. 3C with the first lead 12, the second lead 11, and the conductive members 21 and 22 removed, with hatching omitted.
The light emitting device 100 can be used, for example, in a light source device 200 described later. The light source device 200 is a device in which a large number of light emitting devices 100 are arranged on a plane. Each component of the light emitting device 100 will be described below.

The light emitting device 100 comprises a light emitting element 20, a first lead 12 on which the light emitting element 20 is placed, a second lead 11 electrically connected to the light emitting element 20 via a conductive member 21 and arranged along the first direction, the X direction, away from the first lead 12, and a molded resin member 40 that directly or indirectly covers the light emitting element 20, the molded resin member 40 comprising a lens portion 43 located above the light emitting element 20, a fixing portion 41 that fixes the first lead 12 and the second lead 11, and an inclined portion 42 located between the lens portion 43 and the fixing portion 41, at least a portion of which widens and slopes from the boundary with the lens portion 43 towards the boundary with the fixing portion 41, and the light emitting element 20 is arranged within the fixing portion 41.
In the drawings, a first direction connecting the first lead 12 and the second lead 11 is shown as the X direction, a second direction perpendicular to the first direction X direction is shown as the Z direction, and a third direction perpendicular to the first direction X direction and the second direction Z direction and in which the first lead 12 and the second lead 11 extend is shown as the Y direction. The third direction Y direction may be described as the up-down direction. The upside of the light emitting device 100 is shown as the Y positive direction in the drawings.

(First lead and second lead)
The first lead 12 and the second lead 11 are members that form part of the wiring between the light emitting element 20 and the outside. The light emitting element 20 is mounted on the first lead 12, and the second lead 11 is electrically connected to the light emitting element 20 via a conductive member 21 and is disposed along the X direction, spaced apart from the first lead 12. The first lead 12 is, for example, a cathode electrode, and the second lead 11 is, for example, an anode electrode. Note that, as an example, the second lead 11 is formed to be longer in the Y direction than the first lead 12. The first lead 12 may also be formed to be longer in the Y direction than the second lead 11. In the light emitting device 100, the first lead 12 has a cup portion 121, which will be described later. The light emitting element 20 is mounted on the cup portion 121. The first lead 12 and the second lead 11 extend downward from above a fixing portion 41 of a molded resin member 40, which will be described later. Portions of the first lead 12 and the second lead 11 protrude from the underside of the fixed portion 41, with a predetermined length exposed from the fixed portion 41. The first lead 12 and the second lead 11 have connection ends 114, 124 exposed from the molded resin member 40, respectively. The first lead 12 and the second lead 11 may be plated with silver in order to effectively utilize light reflection. In order to reduce silver migration, it is preferable to use the lead on which the light emitting element 20 is mounted as a cathode electrode.

The first lead 12 has a cup portion 121, a first bottom portion 122 continuous with the cup portion 121, a first joint portion 123 continuous with the first bottom portion 122, and a first connecting end portion 124 continuous with the first joint portion 123. The cup portion 121 and the first bottom portion 122 are continuous in at least the Y direction or the X direction. The first bottom portion 122, the first joint portion 123, and the first connecting end portion 124 are located in this order from the Y positive direction to the Y negative direction. For example, the upper end of the first bottom portion 122 may be located above the cup portion 121. Alternatively, the upper end of the first bottom portion 122 and the upper edge of the cup portion 121 may be at the same height. Furthermore, the upper end of the first bottom portion 122 may be located below the upper edge of the cup portion 121.
The cup portion 121 has a recess 15 defined by a bottom plane 151, which is an upward-facing surface, and a sidewall 155 surrounding the bottom plane 151. The light-emitting element 20 is placed on the bottom plane 151 of the recess 15. The inner surface 152 of the sidewall 155 of the recess 15 is inclined so that the recess 15 has an opening that widens upward. The opening of the recess 15 is formed, for example, in a substantially circular or elliptical shape in a plan view. In this embodiment, the plan view refers to the field of view when looking down from the Y-positive direction.

The height H5, measured from the bottom surface 151 of the recess 15 to the upper end of the sidewall 155 (part of the upper edge of the cup portion) in the vertical direction relative to the bottom surface 151 of the recess 15, is greater than the height of the light-emitting element 20. Height H5 is preferably 0.2 mm or greater and 0.4 mm or less. If height H5 is 0.2 mm or greater, the inner surface 152 of the recess 15 reflects light exiting the side of the light-emitting element 20, improving light extraction onto the light-emitting element 20. On the other hand, if height H5 is 0.4 mm or less, multiple reflections of light from the light-emitting element 20 by the inner surface 152 of the recess 15 can be reduced, improving light extraction onto the light-emitting element 20. To maximize the above-described effect, height H5 is more preferably 0.2 mm or greater and 0.37 mm or less. Note that the recess 15 may include a translucent member 30 as part of the molded resin member 40, which will be described later.

The first bottom portion 122 is formed in an elongated shape. The upper portion of the first bottom portion 122, covered by the molded resin member 40, has a stepped portion that bends toward the second lead 11. The upper portion of the first bottom portion 122 is disposed adjacent to the cup portion 121. The upper end of the first bottom portion 122 is preferably formed flat so that the other end of the conductive member 22 connected to the light-emitting element 20 can be connected thereto. The first bottom portion 122 has a stepped portion extending downward from the upper portion adjacent to the cup portion 121, and the stepped portion continues into a straight portion. The lower end of the straight portion is disposed so as to continue with the first bonding portion 123. The first bonding portion 123 may be formed wide in the X direction. A first connecting end portion 124 is disposed at the lower end of the first bonding portion 123. The first connecting end portion 124 has the same width and thickness as the lower end of the first bottom portion 122. The first connecting end portion 124 may be formed linearly in the Y direction.

The second lead 11 has a second bottom portion 112, a second joint portion 113 continuous with the second bottom portion 112, and a second connection end portion 114 continuous with the second joint portion 113. The upper portion of the second bottom portion 112 is spaced apart from the first bottom portion 122 in the X direction to prevent electrical shorting. Here, when viewed from the Z direction, the second bottom portion 112 and the first bottom portion 122 have a shape that is approximately symmetrical. The upper end of the second bottom portion 112 is preferably flat so that the other end of the conductive member 21 connected to the light-emitting element 20 can be connected thereto. The upper portion of the second bottom portion 112, covered by the molded resin member 40 and facing the first bottom portion 122, has a stepped portion that bends toward the first lead 12. The lower end of the second bottom portion 112 is linear and continuous with the second joint portion 113. The second joint portion 113 may be formed to be wide in the X direction. A second connection end portion 114 having the same width and thickness as the lower end of the second bottom portion 112 is disposed at the lower end of the second joint portion 113. The second connection end portion 114 may be formed linearly in the Y direction. This second connection end portion 114 may be formed to be longer than the first connection end portion 124. The first joint portion 123 and the second joint portion 113 are disposed at the same height in the X direction. The first connection end portion 124 and the second connection end portion 114 are disposed in parallel.

Examples of materials for the first lead 12 and the second lead 11 include iron, copper, iron-containing copper, tin-containing copper, copper-plated, gold-plated, or silver-plated aluminum, iron, copper, or a combination thereof. For example, the cup portion 121 and first bottom portion 122 of the first lead 12 and the second bottom portion 112 of the second lead 11, which are covered by the molded resin member 40, may have a copper-plated silver base, and the first joint portion 123 and first connection end portion 124 of the first lead 12 and the second joint portion 113 and second connection end portion 114 of the second lead 11 may be plated with solder containing tin, copper, silver, or tin and copper.

Note that the "approximately elliptical shape" described in this embodiment is not limited to a strict elliptical shape, which is a locus of points where the sum of the distances from two fixed points on a plane is constant, but also includes shapes that are visually perceived as being close to an ellipse. For example, it may be an oval shape formed by extending a circle in one direction, an oval shape, or the shape of a track used in athletics.

Furthermore, the term "approximately circular" used in this embodiment is not limited to a circle in the strict sense, such as a perfect circle, but also includes shapes that are visually perceived as being close to a circle. For example, it may be a circle that is distorted or deformed within the tolerance or error range.

(Light-emitting element)
The light-emitting element 20 is placed on the bottom surface 151 of the recess 15. The shape and size of the light-emitting element 20 can be selected arbitrarily. The planar shape of the light-emitting element 20 is, for example, square, rectangular, or hexagonal. The light-emitting element 20 can have any wavelength of light emission depending on the application. For example, a light-emitting element 20 that emits blue light (light with a peak wavelength of 430 to 500 nm) or green light (light with a peak wavelength of 500 to 570 nm) can be made of a nitride-based semiconductor (In _x Al _y Ga _1-X-Y N, 0≦X, 0≦Y, X+Y≦1), GaP, or the like. A light-emitting element 20 that emits red light (light with a peak wavelength of 610 to 700 nm) can be made of a nitride-based semiconductor element, GaAlAs, AlInGaP, or the like. The height of the light-emitting element 20 is, for example, 0.15 mm or more and 0.5 mm or less.

The light-emitting element 20 may have a pair of element electrodes on its upper surface 20A and may be mounted face-up on the bottom surface 151 of the recess 15 of the first lead 12. Here, one element electrode of the light-emitting element 20 is joined to the second lead 11 via a conductive member 21 such as a wire, and the other element electrode is joined to the first lead 12 via a conductive member 22 such as a wire. The light-emitting element 20 may also be mounted face-down.

Here, the light-emitting element 20 is disposed in the fixed portion 41 of the molded resin member 40. Furthermore, the light-emitting element 20 is disposed in a position that is approximately the center of the fixed portion 41 and the lens portion 43 (described below) when viewed from above. "Approximately the center" does not necessarily mean the center in the strict sense, but also includes a position that is visually perceived as being close to the center. For example, the position may be 10% of the maximum diameter away from the center.

(Molded resin member)
The molded resin member 40 is a member that covers and exposes the connection ends 124, 114 of the first lead 12 and the second lead 11, and also directly or indirectly covers the light emitting element 20. The molded resin member 40 is preferably solid. In a cross section of the light emitting device 100, the molded resin member 40 is preferably embedded from the outer surfaces of the first lead 12 and the second lead 11 to the inner surface of the molded resin member 40. Note that voids may be included in part of the molded resin member 40. The molded resin member 40 protects the first lead 12, the second lead 11, the light emitting element 20, the conductive members 21, 22, such as wires, etc., from the external environment and fixes one end of the first lead 12 and the second lead 11. Furthermore, the light emitting device 100 can adjust its light distribution by adjusting the shape of the molded resin member 40.
The molded resin member 40 has, in order from top to bottom in the Y direction, a lens portion 43, an inclined portion 42, and a fixed portion 41. In this case, the lens portion 43, the inclined portion 42, and the fixed portion 41 are continuously and integrally formed in the molded resin member 40. For example, the lens portion 43 and the inclined portion 42 may be integrally formed, and the fixed portion 41 may be formed separately.

(Fixed part)
The fixing portion 41 is the lowest portion of the molded resin member 40. The fixing portion 41 covers the light emitting element 20 near its upper end. The upper edge of the fixing portion 41 is located at the same level as the upper end of the recess 15 or higher than the upper end of the recess 15. The upper edge of the fixing portion 41 is located at the same level as the upper edge of the side wall of the recess or higher than the upper edge of the side wall of the recess. Furthermore, the fixing portion 41 is preferably arranged to cover almost the entire first bottom portion 122 of the first lead 12 and the second bottom portion 112 of the second lead 11, exposing the first bonding portion 123 and the second bonding portion 113.
Here, the fixing portion 41 has a columnar shape extending in the Y direction, and in plan view, the fixing portion 41 has a substantially elliptical shape with the major axis extending in the X direction. The ratio of the major axis to the minor axis of the substantially elliptical shape is, for example, about 1.3:1.

In plan view, the length D3 of the fixing portion 41 in the X-direction (first direction) can be, for example, 3.4 mm to 4.4 mm, and preferably 3.6 mm to 4.2 mm. In plan view, the length D4 of the fixing portion 41 in the Z-direction (second direction) can be, for example, 2.5 mm to 3.5 mm, and preferably 2.7 mm to 3.3 mm.
The longest length H4 of the molded resin member 40 in the Y direction, which is the third direction, can be, for example, 5.5 mm or more and 9.5 mm or less, and preferably 6.5 mm or more and 8.2 mm or less.

(Lens part)
The lens portion 43 is the uppermost portion of the molded resin member 40. The lens portion 43 is located above the light-emitting element 20. It is preferable that the lens portion 43 is located above the upper surface 20A of the light-emitting element 20. A portion of the light from the light-emitting element 20 passes through the lens portion 43 and is emitted to the outside of the light-emitting device 100. The lens portion 43 has an upwardly convex curved surface, for example, an upwardly convex hemispherical shape. The lens portion 43 can collect the light from the light-emitting element 20 upward and emit it.

For example, the lens portion 43 has a generally elliptical shape close to a circle with its major axis in the X direction in plan view. Here, in the light emitting device 100, both the lens portion 43 and the fixing portion 41 have an elliptical shape in plan view.
The longest length H3 of the lens portion 43 in the Y direction, which is the third direction, can be set to, for example, 0.5 mm or more and 3.5 mm or less, and preferably 0.8 mm or more and 2.5 mm or less.
Here, in a plan view, the major axis of the lens portion 43 is shorter than the major axis of the fixed portion 41, and the minor axis of the lens portion 43 is shorter than the minor axis of the fixed portion 41. That is, in a plan view, the length D1 of the lens portion 43 in the X direction is shorter than the length D3 of the fixed portion 41, and the length D2 of the lens portion 43 in the Z direction is shorter than the length D4 of the fixed portion 41. For example, as shown in FIG. 3C , the length D1 of the lens portion 43 in the X direction is 2.3 mm or more and 3.3 mm or less. Furthermore, the length D2 of the lens portion 43 in the Z direction is 2.3 mm or more and 3.3 mm or less. The ratio of the minor axis to the major axis is larger for the lens portion 43 than for the fixed portion 41, and the lens portion 43 is closer to being substantially circular in a plan view.

In a plan view, the outer periphery of the fixed portion 41 is larger than the outer periphery of the lens portion 43. In a plan view, the entire outer periphery of the lens portion 43 is located inside the outer periphery of the fixed portion 41. In addition, in a plan view, the center of the outer periphery of the lens portion 43 is located in a position that approximately overlaps with the center of the outer periphery of the fixed portion 41. The outer periphery of the fixed portion 41 is, for example, the upper edge of the fixed portion 41 located at the boundary with the inclined portion 42. The outer periphery of the lens portion 43 is, for example, the lower edge of the lens portion 43 located at the boundary with the inclined portion 42.

(slanted part)
The inclined portion 42 is a portion located between the lens portion 43 and the fixed portion 41. The inclined portion 42 widens from the lower edge of the lens portion 43 toward the fixed portion 41. The inclined portion 42 is formed so as to connect the surface of the lens portion 43 with the surface of the fixed portion 41. The lower edge of the lens portion 43, which is the boundary between the inclined portion 42 and the lens portion 43, and the upper edge of the fixed portion 41, which is the boundary between the inclined portion 42 and the fixed portion 41, have different shapes or sizes. The inclined portion 42 is located above the upper edge of the side wall 155 of the recess 15. The boundary of the inclined portion 42 with the fixed portion 41 may or may not overlap with the upper end of the side wall 155 of the recess 15 in the Y direction, which is the third direction.

The inclined portion 42 has an inclined surface 420, which is the surface of the inclined portion 42 that is inclined with respect to the XZ plane. In a cross-sectional view, the inclined surface 420 may or may not be curved.

3C , the inclined surface 420 is disposed at least on a straight line that passes through the vertex of the lens portion 43 and is parallel to the X direction, which is the first direction. Alternatively, the inclined surface 420 may be disposed on a straight line that passes through the vertex of the lens portion 43 and is parallel to the Z direction, which is the second direction. The inclined surface 420 may be a straight line or a curved line in a cross-sectional view.
The inclination length is the length from the upper end to the lower end of the inclined surface 420 of the inclined portion 42 in a cross section along the Y direction and the X or Z direction (from the connection point of the inclined portion 42 with the lens portion 43 to the connection point with the fixed portion 41). Here, a surface including the vertex of the lens portion 43 will be described as an example. In a cross section along the XY plane, the inclined portion 42 has an inclination length A1. In a cross section along the YZ plane, the inclined portion 42 has an inclination length A2. The inclination length A1 is the same as or longer than the inclination length A2. Here, the inclination length A1 is longer than the inclination length A2.

In addition, the inclination angle of the inclined portion 42 is the angle formed by a line connecting the upper end to the lower end of the inclined surface 420 of the inclined portion 42 with a line parallel to the Y direction passing through the connection point of the inclined portion 42 with the lens portion 43. Here, a plane including the vertex of the lens portion 43 will be described as an example. The inclination angle in a cross section along the XY plane is larger than the inclination angle in a cross section along the YZ plane. In the inclined portion 42, the angle formed by a line connecting the upper end to the lower end of the inclined surface 420 of the inclined portion 42 with a line parallel to the X direction or the Z direction passing through the connection point of the inclined portion 42 with the fixed portion 41 is reversed from the magnitude relationship of the inclination angles described above.
The inclined cross-sectional area of the inclined portion 42 in the X direction is larger than the inclined cross-sectional area of the inclined portion 42 in the Z direction. Here, the inclined cross-sectional area is the area of a cross section defined by the following three line segments in the YZ plane or YX plane including the vertex of the lens portion: a straight line parallel to the Y direction and passing through the connection portion of the inclined portion 42 with the lens portion 43, a straight line or curve connecting the connection point of the inclined portion 42 with the lens portion 43 and the connection point of the fixed portion 41, and a straight line parallel to the X direction or the Z direction and passing through the connection point of the inclined portion 42 with the fixed portion 41.
In the side view shown in FIG. 3A , inclined surfaces 420 are arranged on the left and right sides of the lens portion 43. Furthermore, in the side view shown in FIG. 3B , inclined surfaces 420 are arranged on the left and right sides of the lens portion 43. These allow the light-emitting device 100 to set directional characteristics in the X direction symmetrically on both sides of the light-emitting device 100. Here, the inclined surfaces 420 of the inclined portion 42 are provided around the entire outer periphery of the lower end of the lens portion 43. The inclination in the X direction is gentler than the inclination in the Z direction. The inclined surfaces 420 of the inclined portion 42 may be arranged on the outer periphery of the lower end of the lens portion 43 so that the gradient is the same radially downward.

4A , in a cross section taken along the X direction, which is the first direction, and the Y direction, which is the third direction, a connection point 421E of the inclined portion 42 with the fixing portion 41 is located between a straight line L1 that passes through the upper end of the side wall 155 of the recess 15 and is parallel to the X direction, and a straight line L2 that connects the upper end 25A, which is the intersection of the upper surface 20A and the side of the light-emitting element 20, with the upper end 153A of the side wall 155 of the recess 15. The connection point of the inclined portion 42 with the fixing portion 41 may be located close to the straight line L2, for example, like connection point 420E shown in FIG.
The inclined surface 420 of the inclined portion 42 can be set at an angle at which light rays passing through the inclined portion 42, out of the light emitted from the light emitting element 20, are emitted in a direction parallel to the straight line L1, at an angle at which the light rays are emitted below the straight line L1, or at an angle at which the light rays can be totally reflected. The angle may be set at any of the above angles in a cross section along the X and Y directions that passes through the center of the lens portion 43 in a plan view.

Examples of materials for the molded resin member 40 include glass and other light-transmitting resins with excellent weather resistance, such as epoxy resin, urea resin, and silicone. The molded resin member 40 is a light-transmitting member or transparent body. The molded resin member 40 may contain a filler. By including a filler in the molded resin member 40, the heat resistance of the molded resin member can be improved. Examples of fillers include silicon oxide.

The molded resin member 40 may contain a colorant. For example, by containing a blue, green, or red colorant, the light-emitting device 100 can be made to emit blue light, green light, or red light. By using these light-emitting devices 100, it is possible to manufacture a light source device 200 capable of full-color display.

Examples of colorants that can be used include copper phthalocyanate, CI Pigment Green 36, and N,N'-dimethyl-3,4:9,10-perylenebisdicarboimide. Alternatively, the colorant may contain either a pigment or a dye.
The pigment is not particularly limited, but examples thereof include those using inorganic materials and organic materials, and examples thereof include those using the following materials.
Examples of inorganic materials include red iron oxide (Fe ₂ O ₃ ), red lead (Pb ₃ O ₄ ), titanium nickel antimony oxide, titanium nickel barium oxide, titanium chromium antimony oxide, and titanium chromium niobium oxide.
Examples of organic materials include anthraquinones, azos, quinacridones, perylenes, diketopyrrolopyrroles, monoazos, disazos, pyrazolones, benzimidazolones, quinoxalines, azomethines, isoindolinones, and isoindolines.

The dye is not particularly limited, but examples thereof include anthraquinone dyes, methine dyes, azomethine dyes, oxazine dyes, azo dyes, styryl dyes, coumarin dyes, porphyrin dyes, dibenzofuranone dyes, diketopyrrolopyrrole dyes, rhodamine dyes, xanthene dyes, and pyrromethene dyes.
It is preferable that the pigment and dye do not basically convert the light from the light emitting element 20 into a different wavelength. This is because, as will be described later, when a wavelength conversion material is contained, the pigment and dye do not affect the wavelength conversion material.

The molded resin member 40 may contain a light stabilizer. Examples of light stabilizers include benzotriazole-based, benzophenone-based, salicylate-based, cyanoacrylate-based, and hindered amine-based stabilizers.

The molded resin member 40 may contain a wavelength conversion member. Examples of the wavelength conversion member include a phosphor. Examples of the phosphor include cerium-activated yttrium aluminum garnet, cerium-activated lutetium aluminum garnet, cerium-activated terbium aluminum garnet, nitrogen-containing calcium aluminosilicate activated with one or two of europium and chromium, europium-activated sialon, europium-activated silicate, manganese-activated potassium fluorosilicate, europium-activated nitride phosphor, a phosphor having a perovskite structure (e.g., CsPb(F,Cl,Br,I) ₃ ), and a quantum dot phosphor (e.g., CdSe, InP, _AgInS2 , or _AgInSe2 ). The light emitting device 100 may emit light of various colors by combining the light emitting element 20 with a wavelength conversion member.

[Operation of the Light-Emitting Device]
When the light emitting device 100 is driven, a current is supplied to the light emitting element 20 from an external power source via the first lead 12 and the second lead 11, causing the light emitting element 20 to emit light. Here, an example will be described in which light rays travel along a cross section taken along the X direction, which is the first direction, and the Y direction, which is the third direction, and which are emitted from an upper end 25A, which is the intersection between the upper surface 20A and the side surface of the light emitting element 20.
For example, light R1 emitted upward from upper end 25A of light-emitting element 20 travels to lens portion 43. Light R2 emitted laterally from upper end 25A is reflected by sidewall 155, changes direction upward, and travels to lens portion 43. The light that has traveled to lens portion 43 is emitted to the outside of light-emitting device 100 by lens portion 43.

Light R3 travels from the upper end 25A above the upper end 153A of the sidewall 155 toward the inclined surface 421 of the inclined portion 42, which serves as the interface with the outside. Light R3 travels in a direction that forms an angle of travel θ0 with the line L1 and is incident on the inclined surface 421 at an angle of incidence θ1. Note that a portion of light R3 is blocked by the sidewall 155 of the recess 15. Here, the angle of travel θ0 indicates the angle from a line L111 that is parallel to the upper surface 20A of the light-emitting element 20 and passes through the upper end 153A. The line L111 is parallel to the line L1. Therefore, the angle of travel θ0 from the line L111 and the angle of travel θ0 from the line L1 are the same. The angle of incidence θ1 is the angle between the light R3 and the normal L11 to the inclined portion 42 at the point where the light R3 is incident on the inclined surface 421. Here, the inclined surface 421 of the inclined portion 42 is at an angle at which the light from the light emitting element 20 can be totally reflected, that is, the angle at which the incident angle θ1 is equal to or greater than the critical angle, so the light R3 is totally reflected by the inclined surface 421 and changes direction to travel downward. A waterproof member 70, which will be described later, is arranged below, and the waterproof member 70 absorbs the light and can suppress further reflection.
The inclined surface 420 of the inclined portion 42 may have an angle that allows total reflection in a cross section along the X and Y directions that passes through the center of the lens portion 43 in a plan view. The cross section along the X and Y directions that passes through the center of the lens portion 43 includes a line connecting the vertex of the lens portion 43 and the center point of the lens portion 43 in a plan view.
The light emitting device 100 can narrow the light distribution in the X direction of the light emitting device 100 by totally reflecting light at the inclined portion 42 adjacent to the lens portion 43. Therefore, the light source device 200 equipped with the light emitting device 100 can narrow the viewing angle.

For example, if the molded resin member 40 is made of epoxy resin or the like and has a refractive index of 1.5, the critical angle is 42 degrees when the outside is air. The inclined surface 421 of the inclined portion 42 can be expressed, for example, by the normal inclination angle θ3, which is the angle between the normal L11 and the straight line L1. The normal inclination angle θ3 can also be expressed as the sum of the travel angle θ0 and the incident angle θ1. Therefore, by tilting the inclined portion 42 so that the normal inclination angle θ3 at each point on the inclined surface 421 is equal to or greater than the travel angle θ0 plus 42 degrees, light traveling from the light-emitting element 20 to the inclined surface 421 can be totally reflected. The critical angle is the incident angle at which the refraction angle is 90 degrees.

The inclined portion 42 is located between the lens portion 43 located above the light emitting element 20 and the fixed portion 41 on which the light emitting element 20 is disposed, and has an inclined surface 420 that widens at least partially from the boundary with the lens portion 43 toward the boundary with the fixed portion 41. This allows the size of the lens portion 43 to be adjusted independently of the fixed portion 41, and also allows the inclined surface 420 of the inclined portion 42 to be used to increase the degree of freedom in setting the directional characteristics, etc. of the light emitted from the light emitting device 100. For example, when used as a light source device, narrowing the light distribution of the light emitted in the X direction of the light emitting device 100 can reduce illumination of unnecessary areas.
In the light emitting device 100, the lens portion 43, the inclined portion 42, and the fixed portion 41 are integrally formed, so that the influence of the boundary surfaces between the lens portion 43, the inclined portion 42, and the fixed portion 41 on the path of light can be reduced, and the light from the light emitting element 20 can be effectively utilized.

In the light emitting device 100, in a plan view, the inclined surface 420 of the inclined portion 42 passes through the apex of the lens portion 43 and is arranged on a straight line parallel to the X direction, which allows the adjustment of the directional characteristics, etc. in the X direction. In addition, in the light emitting device 100, the inclined surface 420 of the inclined portion 42 passes through the apex of the lens portion 43 and is arranged on a straight line parallel to the Z direction, which allows the adjustment of the directional characteristics, etc. in the Z direction as well.
By making the inclination length A1 longer than the inclination length A2, it is possible to increase the area of the inclined surface 420. This increases the degree of freedom in setting the directional characteristics of light from the light emitting element 20 at the inclined surface 420 of the inclined portion 42. Furthermore, by making the inclination angle in the cross section along the XY plane larger than the inclination angle in the cross section along the YZ plane, it is possible to increase the shielding effect and narrow the light distribution.
In the light-emitting device 100, the inclined cross-sectional area of the inclined portion 42 in the X direction is larger than the inclined cross-sectional area of the inclined portion 42 in the Z direction, which allows the light distribution in the X direction to be efficiently narrowed. In other words, since the height in the Y direction is the same, if the connection point of the inclined portion 42 with the fixing portion 41 is long in the Z direction or the X direction, the inclined cross-sectional area becomes larger. This means that the inclination angle becomes larger, which can improve the shading effect and narrow the light distribution.

In the light emitting device 100, the first lead 12 and the second lead 11 have connection ends 124, 114 exposed from the molded resin member 40, so that the first lead 12 and the second lead 11 can be used as they are for connection to the outside.
The light source device 200 can adjust the light distribution of light emitted from the light emitting device 100 by changing only the outer periphery of the lens portion 43 without changing the outer periphery of the fixed portion 41. For example, if the outer periphery of the fixed portion 41 is constant, a lens portion with a smaller outer periphery can narrow the spread of the light distribution compared to a lens portion with a larger outer periphery. In other words, the outer periphery of the fixed portion 41 in a plan view is larger than the outer periphery of the lens portion 43, so that the light emitting device 100 can narrow the spread of the light distribution of the lens portion 43. This allows the light emitting device 100 to have high brightness.
The light emitting device 100 has the curved and inclined inclined surface 420, and thus the directional characteristics and the like can be finely adjusted while smoothly changing the inclination.

By placing the light-emitting element 20 on the bottom surface 151 of the recess 15, the light-emitting device 100 can reflect light directed to the side upward by the side wall 155 of the recess 15, thereby effectively narrowing the light distribution.
In the light emitting device 100, the inclined portion 42 is positioned above the upper edge of the side wall 155 of the recess 15, so that the inclined surface 420 of the inclined portion 42 can be effectively used to adjust the directivity and the like.
In light-emitting device 100, in a cross section taken along the X and Y directions, the connection point of inclined portion 42 with fixing portion 41 is located between a straight line L1 that passes through the upper end of sidewall 155 of recess 15 and is parallel to the X direction, and a straight line L2 that connects upper end 25A of the side surface of light-emitting element 20 that is close to inclined portion 42 with upper end 153A of sidewall 155 of recess 15. This allows light that does not exceed sidewall 155 to be reflected by sidewall 155, and allows inclined portion 42 to be positioned relative to light that exceeds sidewall 155. Light that exceeds the connection point is refracted or totally reflected by inclined portion 42.
In the light emitting device 100, the upper edge of the fixing portion 41 is positioned at the same position as or above the upper end of the recess 15, so that the fixing portion 41 can cover up to the side wall 155 of the recess 15, and the recess 15 can be fixed integrally with the first lead 12 and the second lead 11.

In the light emitting device 100, the lens portion 43 and the fixing portion 41 are substantially elliptical in plan view, so that the light emitting device 100 can have anisotropy in the major axis direction and the minor axis direction, thereby setting the directional characteristics and the like.
In the light emitting device 100, the length in the X direction of the fixing portion 41 in a planar view is 3.4 mm or more and 4.4 mm or less, preferably 3.6 mm or more and 4.2 mm or less, and the length in the Z direction is 2.5 mm or more and 3.5 mm or less, preferably 2.7 mm or more and 3.3 mm or less, so that the molded resin member 40 in the X direction connecting the first lead 12 and the second lead 11 is thickened to ensure strength, etc., and the light emitting device 100 can be arranged with a higher mounting density in the Z direction when mounted on the light source device 200.
In the light emitting device 100, the longest length of the lens portion 43 in the Y direction is 0.5 mm or more and 3.5 mm or less, preferably 0.8 mm or more and 2.5 mm or less, so that the shape of the lens portion 43 can be freely set.
In the light emitting device 100, by setting the longest length in the Y direction of the molded resin member 40 to 5.5 mm or more and 9.5 mm or less, preferably 6.5 mm or more and 8.2 mm or less, it is possible to ensure a length H1 of the fixing portion 41 that is sufficient to fix the first lead 12 and the second lead 11. Furthermore, it is possible to ensure a length that is sufficient to protect the light emitting element 20 and the like by lengthening the infiltration path against water or the like that seeps in from the outside along the first lead 12 and the second lead 11.

The inclined portion 42 preferably has a smooth inclined surface 420. The light emitting device 100 can adjust the directional characteristics by utilizing the properties of refraction, reflection, etc. of the smooth surface. The inclined portion 42 may be configured by combining smooth inclined surfaces 420 with different gradients.
The inclined surfaces 420 of the inclined portion 42 may be configured so that the gradient of the opposing inclined surfaces 420 in the X direction or the Z direction is the same, or the gradient may be different, for example, on the first lead 12 side and the second lead 11 side.

The inclined surface 420 of the inclined portion 42 may be provided on at least a part of the outer periphery of the lower end portion of the lens portion 43. For example, the inclined surface 420 may be provided only on the lower end portion of the lens portion 43 on the second lead 11 side in the X direction.
The lens portion 43 may be substantially elliptical or substantially circular in plan view with its minor axis in the X direction. The fixed portion 41 may be substantially elliptical or substantially circular in plan view with its minor axis in the X direction. The planar shapes of the lens portion 43 and the fixed portion 41 may both be substantially elliptical, both may be substantially circular, or one may be substantially elliptical and the other may be substantially circular.

[Modification]
Next, modified examples of the sloped portion will be described with reference to Figures 5A to 5C. Figure 5A is a schematic cross-sectional view illustrating a portion of a light-emitting device 100A according to a first modified example of the sloped portion. Figure 5B is a schematic cross-sectional view illustrating a portion of a light-emitting device 101 according to a second modified example of the sloped portion. Figure 5C is a schematic cross-sectional view illustrating a portion of a light-emitting device 102 according to the second modified example of the sloped portion, which does not include a cup portion. Figures 5A to 5C are schematic cross-sectional views illustrating examples in which the first lead 12, the second lead 11, and the conductive members 21 and 22 have been removed, and hatching has been omitted.
In addition, the description will be given by taking as an example light traveling along a cross section that passes through the center of the lens portion 43 in a plan view and is taken along the X and Y directions.
The light-emitting device 100A according to the first variation of the inclined portion has a similar configuration to the light-emitting device 100, except for the inclined portion 42A. As shown in FIG. 5A , in the light-emitting device 100A, a portion of the inclined surface 425 of the inclined portion 42A overlaps in the X direction with the upper end of the side wall 155 in the Y direction. The connection point 425E of the inclined portion 42A with the fixing portion 41 is located on a line L1 that passes through the upper end of the side wall 155 of the recess 15 and is parallel to the X direction. Note that the distance D5 from the center of the bottom plane 151 of the recess 15 to the surface of the fixing portion 41 is the same as the distance D5 in the light-emitting device 100. The positional relationship between the cup portion 121 and the lens portion 43 is the same as in the light-emitting device 100.

In the light emitting device 100A, in a cross section taken along the first direction, the X direction, and the third direction, the Y direction, light emitted from the light emitting element 20 and passing through the connection point 425S with the lens portion 43 in the inclined portion 42A is emitted downward on a straight line parallel to the X direction passing through the connection point 425S, or from a straight line parallel to the X direction.
Light RA is an example of light that is emitted from the light-emitting element 20 and passes through the connection point 425S of the inclined portion 42A with the lens portion 43. Outgoing light RA1 of the light RA to the outside is emitted on a straight line parallel to the X direction that passes through the connection point 425S of the inclined portion 42A with the lens portion 43. By adjusting the inclined surface 425 of the inclined portion 42A, it is possible to make the light RA be emitted downward from a straight line parallel to the X direction, like emitted light RA2.

In the light emitting device 100A, in a cross section taken along the X direction and the Y direction, the light emitted from the light emitting element 20 and passing through the connection point 425S with the lens portion 43 at the inclined portion 42A is emitted on a straight line parallel to the X direction passing through the connection point 425S, or downward from a straight line parallel to the X direction, thereby narrowing the light distribution in the X direction of the light emitting device 100A.
The inclined surface 425 of the inclined portion 42A may be at an angle such that, at least in a cross section passing through the center of the lens portion 43 in a plan view along the X and Y directions, light RA passing from the position of the upper end portion 25A of the side surface of the light-emitting element 20 through a connection point 425S with the lens portion 43 in the inclined portion 42A is emitted downward on a straight line parallel to the X direction passing through the connection point 425S, or from a straight line parallel to the X direction.

Light RB is an example of a ray of light that is emitted from the upper end 25A of the side surface of the light-emitting element 20, passes near the upper end 153A of the side wall 155 of the recess 15, and travels without being reflected by the side wall 155. Light RC is an example of light that is reflected by the side wall 155. Light RB is emitted to the outside through point 425B on the inclined surface 425 of the inclined portion 42A. The inclined surface 425 of the inclined portion 42A is preferably at an angle such that emitted light RB1 of light RB to the outside travels in the X direction or downward from the X direction.

Next, a light-emitting device 101 relating to a second variation of the inclined portion will be described. The light-emitting device 101 differs from the light-emitting device 100 in that a translucent member 30 (described below) is provided in the recess 15 and in the inclined portion 42L, but otherwise has the same configuration as the light-emitting device 100. As shown in FIG. 5B , the light-emitting device 101 has the translucent member 30 filled in the recess 15 up to the upper end of the sidewall 155, and has an upper surface 30A of the translucent member 30. The inclined surface 422 of the inclined portion 42L extends to the upper end of the sidewall 155 in the Y direction. The connection point 422E of the inclined portion 42L with the fixing portion 41 is located on a line L1 that passes through the upper end of the sidewall 155 of the recess 15 and is parallel to the X direction. Note that the distance D5 from the center of the bottom plane 151 of the recess 15 to the surface of the fixing portion 41 is the same as that of the light-emitting device 100. The positional relationship between the cup portion 121 and the lens portion 43 is the same as that of the light-emitting device 100.

In the light-emitting device 101, in a cross section along the X direction and the Y direction, light traveling from the upper surface 30A of the light-transmitting member 30 to the inclined surface 422 of the inclined portion 42L is refracted in the X direction or downward from the X direction and is emitted to the outside from the inclined surface 422.
For example, light R4 emitted upward from the upper surface 30A of the light-transmitting member 30 travels to the lens portion 43. The light that has traveled to the lens portion 43 is condensed upward by the lens portion 43 and then emitted to the outside.
Light beams R5 and R6 traveling from the upper surface 30A to the inclined surface 422 of the inclined portion 42L are refracted by the inclined surface 422 in the X direction or downward from the X direction before being emitted. By adjusting the inclined surface 422 of the inclined portion 42L, the emitted light beams R52 and R62 can be refracted downward from the X direction. The refraction angle θ2 of the emitted light beams R52 and R62 is larger than that of the emitted light beams R51 and R61. That is, the refraction angle θ2 of the emitted light beams traveling downward is larger than that of the emitted light beams traveling in the X direction. The inclined surface 422 of the inclined portion 42L is set so that the refraction angle θ2 is equal to or greater than the normal tilt angle θ3. It is acceptable for the emitted light beams to be totally reflected as long as they are not refracted upward from the X direction.

The light emitting device 101 refracts light in the X direction or downward from the X direction at the inclined portion 42L adjacent to the lens portion 43. This allows the light distribution of the light emitting device 101 in the X direction to be narrowed.
In the light-emitting device 101, the change in the traveling direction caused by the light-transmitting member 30 causes light with a small traveling angle θ0 to travel without being reflected by the side wall 155. If there is a limit to the size of the light-emitting device and, for example, the distance D5 cannot be increased, it is not possible to provide an inclination that causes total reflection of light with a small traveling angle θ0. Even in such a case, the light-emitting device 101 can narrow the light distribution by refracting light in the X direction or downward from the X direction using the inclined portion 42L without changing the positional relationship between the cup portion 121 and the lens portion 43 or the distance D5.

The light-transmitting member 30 is a member that is placed in the recess 15 and covers the light-emitting element 20. Examples of materials for the light-transmitting member 30 include light-transmitting resins such as epoxy resin, urea resin, acrylic resin, and silicone resin, as well as glass. The light-transmitting member 30 is a member or transparent body that has light transmissivity. The light-transmitting member 30 may contain a filler such as a diffusing material. By containing a filler in the light-transmitting member 30, changes in light distribution can be reduced. The light-transmitting member 30 may also contain a colorant, light stabilizer, phosphor, colorant, etc. The colorant, filler, light stabilizer, and phosphor described for the molded resin member 40 can be used.

By providing the light-emitting device 101 with a translucent member 30 in the recess 15, the molded resin member 40 does not come into direct contact with the light-emitting element 20, and the molded resin member 40 is not positioned near the light-emitting element 20, thereby reducing deterioration of the molded resin member 40 due to heat from the light-emitting element 20. This allows the light-emitting device 101 to have a longer lifespan.

Next, a light emitting device 102 according to a second variation of the inclined portion will be described. As shown in FIG. 5C , the light emitting device 102 includes an inclined portion 42L similar to that of the light emitting device 101. The light emitting device 102 differs from the light emitting device 101 in that it does not include a recess 15 and the light emitting element 20 is mounted on a die pad 126 formed on the upper end of the first lead 12. Furthermore, the light-transmitting member 30 is not provided, and the molded resin member 40 directly covers the light emitting element 20. In other respects, the light emitting device 102 has the same configuration as the light emitting device 101. Light is emitted from the upper surface 20A and the side surface of the light emitting element. In this case, it is preferable that the position of the upper surface of the die pad 126 be adjusted to be approximately the same height as the position of the connection point 422E of the inclined portion 42L with the fixing portion 41.
For example, light rays R7, R8, and R9 emitted from the lower end 25B of the light-emitting element 20 travel and are emitted to the outside in the same manner as light rays R4, R5, and R6 described in connection with the light-emitting device 101. Since the light-emitting device 102 does not have a recess 15, the light emitted from the lower end 25B of the light-emitting element 20 is described as an example. This is because the light emitted from the lower end 25B has the largest travel angle.

In the light emitting device 102, the light emitting element 20 is not surrounded by the sidewall 155 of the recess 15, and therefore, similar to the light emitting device 101, light having a small propagation angle θ0 travels without being reflected. Similarly to the light emitting device 101, the light emitting device 102 refracts light in the X direction or downward from the X direction at the inclined portion 42L adjacent to the lens portion 43. This allows the light distribution of the light emitting device 102 in the X direction to be narrowed.
Alternatively, instead of adjusting the die pad 126, the position of the upper end of the fixing portion 41 may be adjusted so that the upper surface 20A of the light emitting element 20 is positioned at the lower end of the inclined portion 42L.

Next, modified examples of the fixing portion and the size relationship between the lens portion and the fixing portion will be described with reference to Figures 6A to 6E. Apart from the fixing portion and the size relationship between the lens portion and the fixing portion, the light emitting devices 100 to 101 have the same configuration. Figures 6A and 6B are a schematic perspective view and a schematic plan view illustrating a light emitting device 130 relating to a modified fixing portion. Figures 6C, 6D, and 6E are schematic plan views showing light emitting devices 140A and 140B relating to modified examples of the size relationship between the lens portion and the fixing portion in the second direction, the Z direction.

As shown in FIG. 6B , in the light emitting device 130, the end of the fixing portion 41S in the X direction is formed flat. In a plan view, the outer periphery of the fixing portion 41S has a linear portion along the Z direction. The linear portion of the fixing portion 41S has a side plane. The length D6 of the linear portion is approximately 1/5 of the longest length D4 in the Z direction. The length D6 may be, for example, approximately 4/5 of the length D4. Note that in a plan view, the lengths D1, D2, D3, and D4 are the same as the lengths D1, D2, D3, and D4 of the light emitting device 100.
6A, the inclined portion 42S is formed so that the outer periphery of the upper end thereof is continuous with the fixing portion 41S having a linear portion along the Z direction. As with the light-emitting device 100, the inclined surface 420S of the inclined portion 42S is angled so as to totally reflect the light from the light-emitting element 20. Alternatively, the inclined surface 420S is angled so as to refract the light parallel to the X direction or downward.

In the light emitting device 130, compared to when the lower end of the inclined portion is approximately elliptical, the entire linear portion of the inclined portion 42S can be set to an angle that causes the inclination of the inclined portion to be totally reflected, or an angle that allows the inclination to be refracted parallel to the X direction or downward.
The light emitting device 130 has a linear portion on the outer periphery of the lower end of the inclined portion 42S that runs along the Z direction, which narrows the light distribution of the light emitting device 130 in the X direction and also narrows the light distribution in a direction that is at an angle of 45 degrees to the X direction, for example.

As shown in FIG. 6C, the length D2 of the lens portion 43 in the Z direction in a plan view may be the same as the length D4 of the fixed portion 41. In the light-emitting device 140A, the inclined surface 420 of the inclined portion 42 is arranged only in the X direction. The lens portion 43 has the same length in the Z direction as the fixed portion 41. The light-emitting device 140A illustrates an example in which the lens portion 43 and the fixed portion 41 are connected in the Z direction without the inclination of the inclined portion 42. Note that the lengths D1, D3, and D4 of the light-emitting device 140A are the same as the lengths D1, D3, and D4 of the light-emitting device 100.

6D , the length D2 of the lens portion 43 in the Z direction in a plan view may be longer than the length D4 of the fixed portion 41. Light-emitting device 140B illustrates an example in which the inclined surface 420 of the inclined portion 42 is disposed in the X direction, the lens portion 43 is longer than the fixed portion 41 in the Z direction, and the fixed portion 41 is connected below the lens portion 43. Note that light-emitting devices 140A and 140B may be combined with the linear portion of the fixed portion 41S of light-emitting device 130. For example, the length D2 of the lens portion 43 in the Z direction is 2.3 mm or more and 3.3 mm or less. Note that the lengths D1, D3, and D4 of light-emitting device 140B are the same as the lengths D1, D3, and D4 of light-emitting device 100.
In the light emitting devices 140A and 140B, the length D2 in the Z direction of the lens portion 43 in a plan view is equal to or longer than the length D4 of the fixing portion 41, which further increases the degree of freedom in adjusting the directional characteristics, etc. Furthermore, by making the fixing portion 41 smaller, the packaging density in the light source device 200 described below can be increased.

As shown in Figure 6E, the lens portion 43 may have a major axis in the Z direction. For example, the length D1 of the lens portion 43 in the X direction of the light-emitting device 140C is 1.9 mm or more and 2.9 mm or less. The length D2 of the lens portion 43 in the Z direction of the light-emitting device 140C is 2.3 mm or more and 3.3 mm or less. This allows the light distribution in the X direction to be narrowed. Note that the lengths D1, D3, and D4 of the light-emitting device 140C are the same as the lengths D1, D3, and D4 of the light-emitting device 100.

[Method of manufacturing a light-emitting device]
Next, a manufacturing method of a light emitting device according to an embodiment will be described with reference to FIGS. 7 to 8D . FIG. 7 is a flowchart illustrating a manufacturing method of a light emitting device 100. FIG. 8A is a schematic side view illustrating a portion of a prepared coupled body 300 in the manufacturing method of the light emitting device 100. FIG. 8B is a schematic side view illustrating a portion of an intermediate body 400 in which a light emitting element 20 is mounted on the coupled body 300 and connected to the first lead 12 and the second lead 11 by conductive members 21, 22 in the manufacturing method of the light emitting device 100. FIG. 8C is a schematic side view illustrating a portion of a state in which the intermediate body 400 is inserted into a recess C40 of a casting case C01 filled with a mold resin material 40A in the manufacturing method of the light emitting device 100. FIG. 8D is a schematic side view illustrating a portion of the light emitting device 100 after the coupling portion 310 is cut off and the device is separated into individual pieces in the manufacturing method of the light emitting device 100.

The manufacturing method of the light emitting device 100 includes the steps of: preparing an intermediate body 400 in step S10, in which a pair of first leads 12 and second leads 11 are repeatedly connected by connecting portions 310, and a light emitting element 20 is placed on the first lead 12 of the connected body 300, and the light emitting element 20 and the second lead 11 are electrically connected via a conductive member 21; filling a molding resin member material 40A into a casting case C01 having a plurality of recesses C40; and inserting the intermediate body 400 into the recesses C40 filled with the molding resin member material 40A to form a molding resin member 40 that directly or indirectly covers the light emitting element 20 for each pair of first leads 12 and second leads 11. The manufacturing method includes a step S30 of separating the connecting portion 310 of the connecting body 300 into a pair of first leads 12 and second leads 11, and a singulation step S40 of cutting off the connecting portion 310 of the connecting body 300 to obtain a pair of first leads 12 and second leads 11. In the step S20 of filling the molded resin member material 40A, the casting case C01 has a lens portion opening C43 on the bottom side of the casting case C01, a sloped portion opening C42 that connects to the lens portion opening C43 and slopes toward the opening side of the casting case C01, and a fixing portion opening C41 that connects to the sloped portion opening C42 and is positioned toward the opening side of the casting case C01. In the step S30 of forming the molded resin member 40, the light emitting element 20 is positioned in the fixing portion opening C41.

(Step of Preparing an Intermediate)
The step S10 of preparing an intermediate body is a step of preparing an intermediate body 400 before providing the molded resin member 40. The step S10 of preparing an intermediate body includes a step S11 of preparing a connecting body, a step S12 of placing a light-emitting element, and a step S13 of connecting a conductive member.

The step S11 of preparing a connected body is a step of preparing a connected body 300 in which a pair of first leads 12 and second leads 11 are repeatedly connected by connecting portions 310. In this step, for example, the first leads 12 and second leads 11 are formed into a desired shape on a base frame.
The step S12 of mounting the light emitting element is a step of mounting the light emitting element 20 on the connected body 300. In this step, the light emitting element 20 is mounted on the bottom surface 151 of the recess 15 of the cup portion 121 of the first lead 12 via an adhesive member.
The step S13 of connecting the conductive members is a step of electrically connecting the light emitting element 20 to the first lead 12 and the second lead 11 via conductive members 21, 22 such as wires. In this step, one element electrode of the light emitting element 20 is connected to the first lead 12 via the conductive member 22, and the other element electrode is connected to the second lead 11 via the conductive member 21.

In step S10 of preparing an intermediate body, step S14 of forming a translucent member may be added after step S13 of connecting a conductive member. In step S14, uncured translucent member material is injected into recess 15 and cured to form translucent member 30 that covers light-emitting element 20.

(Process of filling material of molded resin member)
The step S20 of filling the mold resin member material is a step of filling the casting case C01 with the mold resin member material 40A before hardening. The casting case C01 has a plurality of recesses C40 corresponding to the shape of the mold resin member 40 of the light emitting device 100. The casting case C01 can be, for example, a mold.
Each recess C40 has, from the bottom side to the opening side of the recess C40, a lens portion opening C43 corresponding to the shape of the lens portion 43 of the light-emitting device 100, an inclined portion opening C42 corresponding to the shape of the inclined portion 42, and a fixed portion opening C41 corresponding to the shape of the fixed portion 41, in succession.
The casting case C01 is placed with the bottom side of the recess C40 facing vertically downward, and a predetermined amount of uncured mold resin member material 40A is poured from the opening side.

(Process of forming molded resin member)
The step S30 of forming the molded resin member is a step of forming the molded resin member 40 for each pair of the first lead 12 and the second lead 11. In this step S30, an intermediate 400 is inserted into the recess C40 filled with the material 40A of the molded resin member, and the molded resin member 40 that directly or indirectly covers the light emitting element 20 for each pair of the first lead 12 and the second lead 11 is formed.
The intermediate body 400 is inserted into the recess C40 with the connecting portion 310 exposed from the side on which the light emitting element 20 is placed, and is fixed in place with the light emitting element 20 positioned within the fixing portion opening C41. The molded resin member 40 is formed by hardening the molded resin member material 40A by heating or the like, and after hardening, the casting case C01 is removed.

(Singufacturing process)
The singulation step S40 is a step of cutting off the connecting portions 310 of the connected body 300. The cutting is performed so that protrusions are formed on the first lead 12 and the second lead 11, leaving a portion of the connecting portions 310. After the connecting portions 310 are cut off, the light emitting devices 100 are singulated.

The manufacturing method of the light emitting device 100 can hold the first lead 12 and the second lead 11 as a pair by the connecting portion 310 of the connecting body 300. Furthermore, since the connecting body 300 repeatedly connects pairs of the first lead 12 and the second lead 11, it is possible to handle multiple pairs at once, thereby improving work efficiency.
The manufacturing method of light emitting device 100 forms molded resin member 40 by casting, thereby making it possible to integrally form lens portion 43, inclined portion 42, and fixing portion 41. Furthermore, by adjusting the shape of recess C40 in casting case C01, molded resin member 40 having a set surface shape can be repeatedly and stably formed.
In the manufacturing method of the light emitting device 100, in the singulation step, the coupling portion 310 can be cut off so that the first lead 12 and the second lead 11 have the first bonding portion 123 and the second bonding portion 113. As a result, when the light emitting devices 100 are arranged by inserting the connection end portions 124, 114 into a mounting substrate 60 described below, for example, the positions of the upper ends of the lens portions 43 can be aligned by making the lower surfaces of the first bonding portion 123 and the second bonding portion 113 face the mounting substrate 60.

Note that step S20 of filling the molded resin member material may be performed in conjunction with the next step S30 of forming the molded resin member. That is, in a state where the intermediate body 400 is placed in a casting case C01 having a plurality of recesses C40, the molded resin member material 40A may be filled to form molded resin members 40 that directly or indirectly cover the light emitting elements 20 for each pair of first leads 12 and second leads 11 arranged in the recesses C40 of the casting case C01.
The light emitting devices 101, 102, 100A, 140A, and 140B can also be manufactured using the same process by changing the shape of the recess C40 in the casting case C01. Note that the light emitting device 100 may be formed into a desired shape by cutting the molded resin member 40.

Next, the light source device 200 in which the light emitting device 100 is used will be described with reference to Figures 9A and 9B. Figure 9A is a schematic front view illustrating a portion of the light source device 200. Figure 9B is a schematic cross-sectional view illustrating the state in which the light emitting device 100 is mounted on the light source device 200. Note that the light emitting devices 101, 102, 100A, 140A, 140B, etc. described with reference to Figures 3A to 6D may be used instead of the light emitting device 100.

The light source device 200 is a device in which a large number of light-emitting devices 100 are arranged so that the lens units 43 form a display surface, and the on/off and brightness of each light-emitting device 100 can be controlled. The up/down direction of the light-emitting device 100 is perpendicular to the display surface of the light source device 200. The light-emitting devices 100 are arranged so that the X direction is the horizontal direction of the display surface of the light source device 200. It is preferable that the inclined portions of the light-emitting devices 100 are arranged parallel to the horizontal direction of the display surface of the light source device 200. For example, in the light-emitting device 100, when the inclined portions 42 are arranged opposite each other via the lens units 43 along the first direction, the multiple light-emitting devices are arranged in a direction parallel to the first direction.
Furthermore, it is preferable that the light source device 200 has a plurality of light emitting devices arranged in a plurality of rows. Furthermore, it is preferable that three light emitting devices across adjacent rows are grouped together, and the light emitting devices are mounted in a position where a line virtually connecting the centers of the three light emitting devices in each group forms a triangle. Furthermore, the light emitting devices may be grouped together in a plurality of adjacent rows, and the line virtually connecting the centers of the three light emitting devices in each group may be mounted parallel to a direction perpendicular to the display surface of the light source device.

The light source device 200 may be configured by arranging light emitting devices 100 that emit different colors of light. For example, by incorporating blue, green, and red colorants into the molded resin member 40, the light emitting device 100 can be configured as a first light emitting device 100a that emits blue light, a second light emitting device 100b that emits green light, and a third light emitting device 100c that emits red light. A large number of these three color light emitting devices 100a, 100b, and 100c, each set of which constitutes one pixel, can be arranged to form the light source device 200 capable of full-color display. The order in which the light emitting devices 100a, 100b, and 100c are arranged is not limited. Of the three light emitting devices in each set, it is preferable to arrange the light emitting device 100b that emits green light in the center. This is because good white color can be obtained by arranging the light emitting device that emits light with the wavelength that requires the most brightness in the center.
The light source device 200 may have a louver. The louver blocks incident light such as sunlight from being irradiated onto the display surface of the light source device 200. The louvers may be arranged in one row or in multiple rows. In the case of the light source device 200 having a louver, it is preferable to arrange a light-emitting device with low weather resistance near the louver.

The light-emitting device 100 is mounted on the mounting substrate 60 of the light source device 200. The overall length of the light-emitting device 100 is, for example, 25.5 mm to 29.5 mm, preferably 26.8 mm to 28.5 mm. The mounting height of the light-emitting device 100 from the top surface of the mounting substrate 60 is set by bonding the interface between the first bonding portion 123 and the first connecting end 124 and the interface between the second bonding portion 113 and the second connecting end 114 to the top surface of the mounting substrate 60 when the light-emitting device 100 is mounted on the mounting substrate 60. This allows, for example, the height H10 to the top end of the lens portion 43 to be aligned. The first bonding portion 123 and the second bonding portion 113 may be formed to be wider in the X direction. The first connecting end 124 and the second connecting end 114 are inserted into the mounting substrate 60 when the light-emitting device 100 is mounted on the mounting substrate 60. The first connection end 124 and the second connection end 114 are inserted into the mounting substrate 60 and connected to external electrodes.

A waterproof member 70 is provided on the mounting substrate 60 so that a portion of the molded resin member 40 is embedded therein. In addition, a waterproof member is disposed between adjacent light emitting devices so that a portion of the molded resin member is embedded therein. The waterproof member 70 is a member that protects the light emitting devices 100 and the mounting substrate 60 from water and the like.
The thickness H11 of the overlap between the waterproofing member 70 and the molded resin member 40 is, for example, 0.5 mm or more, preferably 1.5 mm or more, and more preferably 3.0 mm or more. Examples of materials for the waterproofing member 70 include epoxy resin, modified epoxy resin, silicone resin, and modified silicone resin. Silicone resin, which has excellent light resistance and heat resistance, is particularly preferred. The waterproofing member 70 is preferably a black resin. Using a black resin enhances the contrast between the waterproofing member 70 and the emitted light, resulting in a clearer display by the light source device 200. Furthermore, the inclined surface 420 of the inclined portion 42 is set at an angle that allows total reflection of light emitted from the light-emitting element 20 that passes through the inclined portion 42 from the angle at which the light ray passing through the inclined portion 42 is refracted parallel to the line L1 and emitted. The light that is totally reflected from the light that is refracted in parallel and emitted by the inclined surface 420 of the inclined portion 42 travels toward the mounting substrate 60 and is absorbed by the waterproofing member 70. This makes it possible to adjust the area illuminated by the light source device 200. For example, by narrowing the light distribution of the light-emitting device and adjusting the area illuminated laterally on the display surface of the light source device 200, it becomes possible to maintain the brightness of the area that is desired to be illuminated by the light source device 200, while reducing light leakage or suppressing brightness in areas that do not need to be illuminated or that you do not want to illuminate.

Light-emitting devices and light source devices according to embodiments of the present disclosure can be suitably used in outdoor displays. Additionally, light-emitting devices and light source devices according to embodiments of the present disclosure can be used as backlight sources for liquid crystal displays, various lighting fixtures, indoor displays, and various display devices for advertising, destination guidance, etc.

This application includes the following:
[Section 1]
A light-emitting element;
a first lead on which the light emitting element is mounted;
a second lead electrically connected to the light emitting element via a conductive member and disposed along a first direction and spaced apart from the first lead;
a mold resin member that directly or indirectly covers the light emitting element,
The molded resin member is
a lens portion located above the light-emitting element;
a fixing portion that fixes the first lead and the second lead;
an inclined portion located between the lens portion and the fixed portion, at least a portion of which is inclined and widens from a boundary with the lens portion toward a boundary with the fixed portion,
The light emitting device, wherein the light emitting element is disposed within the fixed portion.
[Section 2]
the inclined portion has an inclined surface that is a surface of the inclined portion,
Item 2. The light emitting device according to item 1, wherein the inclined surface is disposed on a straight line that passes through a vertex of the lens portion and is parallel to the first direction in a plan view.
[Section 3]
3. The light-emitting device described in Item 2, wherein, in a planar view, the inclined surface is arranged on a straight line that passes through the vertex of the lens portion and is parallel to a second direction perpendicular to the first direction, and the inclination angle of the inclined portion in the first direction is greater than the inclination angle of the inclined portion in the second direction.
[Section 4]
Item 4. The light emitting device according to any one of items 1 to 3, wherein the first lead and the second lead have connection ends exposed from the molded resin member.
[Section 5]
5. The light emitting device according to any one of items 1 to 4, wherein an outer periphery of the fixing portion is larger than an outer periphery of the lens portion in a plan view.
[Section 6]
6. The light emitting device according to any one of items 1 to 5, wherein the inclined portion has an inclined surface without irregularities.
[Section 7]
Item 6. The light emitting device according to any one of items 1 to 5, wherein the inclined portion has a curved inclined surface.
[Section 8]
In a cross section cut along the first direction and the third direction, light emitted from the light-emitting element and passing through a connection point between the inclined portion and the lens portion is emitted on a straight line parallel to the first direction that passes through the connection point between the inclined portion and the lens portion, or downward from the parallel line,
8. The light emitting device according to any one of claims 1 to 7, wherein the third direction is perpendicular to the first direction and a second direction perpendicular to the first direction, and is the direction in which the first lead and the second lead extend.
[Section 9]
Item 9. The light emitting device according to any one of items 1 to 8, wherein the first lead has a recess defined by a sidewall and a bottom surface, and the light emitting element is placed on the bottom surface of the recess.
[Section 10]
Item 10. The light emitting device according to item 9, wherein the inclined portion is positioned above an upper edge of the side wall of the recess.
[Section 11]
In a cross section taken along the first direction and the third direction, a connection point of the inclined portion with the fixing portion is located between a straight line passing through an upper end of a side wall of the recess and parallel to the first direction, and a straight line connecting an upper end of a side surface of the light-emitting element adjacent to the inclined portion and an upper end of the side wall of the recess,
11. The light emitting device according to claim 9, wherein the third direction is perpendicular to the first direction and a second direction perpendicular to the first direction, and is a direction in which the first lead and the second lead extend.
[Section 12]
Item 12. The light emitting device according to any one of items 9 to 11, wherein an upper edge of the fixing portion is positioned at the same level as an upper end of the recess or higher than an upper end of the recess.
[Section 13]
Item 13. The light emitting device according to any one of items 1 to 12, wherein an inclination angle of the inclined portion in the first direction is larger than an inclination angle of the inclined portion in the second direction.
[Section 14]
Item 14. The light emitting device according to any one of items 1 to 13, wherein the lens portion and the fixing portion have a substantially elliptical shape in a plan view.
[Section 15]
Item 15. The light emitting device according to any one of items 1 to 14, wherein the length of the fixing portion in the first direction in plan view is 3.4 mm to 4.4 mm.
[Section 16]
Item 16. The light emitting device according to any one of items 1 to 15, wherein, in a plan view, a length of the fixing portion in the second direction perpendicular to the first direction is 2.5 mm to 3.5 mm.
[Section 17]
17. The light emitting device according to any one of claims 1 to 16, wherein in a third direction perpendicular to the first direction and a second direction perpendicular to the first direction, and in which the first lead and the second lead extend, the longest length of the lens portion is 0.5 mm or more and 3.5 mm or less.
[Section 18]
Item 18. The light emitting device according to any one of items 1 to 17, wherein in a third direction perpendicular to the first direction and a second direction perpendicular to the first direction, and in which the first lead and the second lead extend, the longest length of the molded resin member is 5.5 mm or more and 9.5 mm or less.
[Section 19]
Item 19. The light emitting device according to any one of items 1 to 18, wherein the lens portion, the inclined portion, and the fixed portion are integrally formed.
[Section 20]
a step of preparing an intermediate body in which a pair of first leads and second leads are repeatedly connected by connecting portions, a light emitting element is placed on the first lead of the connected body, and the light emitting element and the second lead are electrically connected via a conductive member;
a step of filling a material for a molded resin member into a casting case having a plurality of recesses; a step of inserting the intermediate body into the recesses filled with the material for the molded resin member, and forming a molded resin member that directly or indirectly covers the light emitting element for each pair of first leads and second leads;
a singulation step of cutting off the connection portion of the coupling body to obtain the pair of first and second leads,
In the step of filling the mold resin member material, the casting case includes a lens portion opening on the bottom side of the casting case, a sloped portion opening that is connected to the lens portion opening and slopes toward the opening side of the casting case, and a fixing portion opening that is connected to the sloped portion opening and is disposed toward the opening side of the casting case,
In the step of forming the molded resin member, the light emitting element is disposed in the fixing portion opening.
[Section 21]
a plurality of light emitting devices and a mounting substrate on which the light emitting devices are mounted;
The plurality of light emitting devices are the light emitting devices according to any one of items 1 to 19,
the inclined portions are disposed opposite each other in the first direction with the lens portion interposed therebetween,
The light source device, wherein the plurality of light emitting devices are arranged in a direction parallel to the first direction.
[Section 22]
Item 22. The light source device according to item 21, wherein the plurality of light-emitting devices are arranged in multiple rows parallel to the first direction, and three of the light-emitting devices in adjacent rows form a group, and the light-emitting devices are placed in a position where a line connecting the centers of the three light-emitting devices in each group forms a triangle.
[Section 23]
Item 23. The light source device according to item 21 or 22, further comprising a waterproof member such that a part of the molded resin member is embedded between the adjacent light emitting devices.

12 First lead, 121 Cup portion, 122 First bottom portion, 123 First joint portion, 124 First connection end portion, 11 Second lead, 112 Second bottom portion, 113 Second joint portion, 114 Second connection end portion, 15 Recess, 151 Bottom surface (recess), 152 Inner surface (recess), 155 Side wall (recess), 20 Light emitting element, 20A Upper surface (light emitting element), 22 Conductive member (first conductive member), 21 Conductive member (second conductive member), 30 Translucent member, 30A Upper surface (translucent member), 40 Molded resin member, 40A Molded resin member (before hardening), 41 Fixing portion, 42 Inclined portion, 43 Lens portion, 60 Mounting substrate, 70 Waterproofing member, 100 Light emitting device, 200 Light source device, 300 Connecting body, 310 Connecting portion, 400 Intermediate body, C01 Casting case, C40 dent

Claims (22)

A light-emitting element;
a first lead on which the light emitting element is mounted;
a second lead electrically connected to the light emitting element via a conductive member and disposed along a first direction and spaced apart from the first lead;
a mold resin member that directly or indirectly covers the light emitting element,
The molded resin member is
a lens portion located above the light-emitting element;
a fixing portion that fixes the first lead and the second lead;
an inclined portion located between the lens portion and the fixed portion, at least a portion of which is inclined and widens from a boundary with the lens portion toward a boundary with the fixed portion,
the light emitting element is disposed within the fixed portion ,
the inclined portion has an inclined surface that is smooth, and
The light emitting device , wherein the inclined surface is disposed on a first straight line that passes through a vertex of the lens portion and is parallel to the first direction in a plan view . A light-emitting element;
a first lead on which the light emitting element is mounted;
a second lead electrically connected to the light emitting element via a conductive member and disposed along a first direction and spaced apart from the first lead;
a mold resin member that directly or indirectly covers the light emitting element,
The molded resin member is
a lens portion located above the light-emitting element;
a fixing portion that fixes the first lead and the second lead;
an inclined portion located between the lens portion and the fixed portion, at least a portion of which is inclined and widens from a boundary with the lens portion toward a boundary with the fixed portion,
the light emitting element is disposed within the fixed portion,
In a cross section cut along the first direction and the third direction, light emitted from the light-emitting element and passing through a connection point between the inclined portion and the lens portion is emitted on a straight line parallel to the first direction that passes through the connection point between the inclined portion and the lens portion, or downward from the parallel line,
The third direction is perpendicular to the first direction and a second direction perpendicular to the first direction, and is a direction in which the first lead and the second lead extend. A light-emitting element;
a first lead on which the light emitting element is mounted;
a second lead electrically connected to the light emitting element via a conductive member and disposed along a first direction and spaced apart from the first lead;
a mold resin member that directly or indirectly covers the light emitting element,
The molded resin member is
a lens portion located above the light-emitting element;
a fixing portion that fixes the first lead and the second lead;
an inclined portion located between the lens portion and the fixed portion, at least a portion of which is inclined and widens from a boundary with the lens portion toward a boundary with the fixed portion,
the light emitting element is disposed within the fixed portion,
the first lead has a recess defined by a sidewall and a bottom surface, and the light emitting element is mounted on the bottom surface of the recess;
In a cross section taken along the first direction and the third direction, a connection point of the inclined portion with the fixing portion is located between a straight line passing through an upper end of a side wall of the recess and parallel to the first direction, and a straight line connecting an upper end of a side surface of the light-emitting element adjacent to the inclined portion and an upper end of the side wall of the recess,
The third direction is perpendicular to the first direction and a second direction perpendicular to the first direction, and is a direction in which the first lead and the second lead extend. A light-emitting element;
a first lead on which the light emitting element is mounted;
a second lead electrically connected to the light emitting element via a conductive member and disposed along a first direction and spaced apart from the first lead;
a mold resin member that directly or indirectly covers the light emitting element,
The molded resin member is
a lens portion located above the light-emitting element;
a fixing portion that fixes the first lead and the second lead;
an inclined portion located between the lens portion and the fixed portion, at least a portion of which is inclined and widens from a boundary with the lens portion toward a boundary with the fixed portion,
the light emitting element is disposed within the fixed portion,
the inclined portion has an inclined surface that is a surface of the inclined portion,
the inclined surface is disposed on a first straight line that passes through a vertex of the lens portion and is parallel to the first direction in a plan view;
the inclined surface is disposed on a second straight line that passes through the vertex of the lens portion and is parallel to a second direction that is perpendicular to the first direction, in a plan view;
A light emitting device, wherein an inclination angle of the inclined portion in the first direction is larger than an inclination angle of the inclined portion in the second direction. A light-emitting element;
a first lead on which the light emitting element is mounted;
a second lead electrically connected to the light emitting element via a conductive member and disposed along a first direction and spaced apart from the first lead;
a mold resin member that directly or indirectly covers the light emitting element,
The molded resin member is
a lens portion located above the light-emitting element;
a fixing portion that fixes the first lead and the second lead;
an inclined portion located between the lens portion and the fixed portion, at least a portion of which is inclined and widens from a boundary with the lens portion toward a boundary with the fixed portion,
the light emitting element is disposed within the fixed portion,
The light emitting device, wherein the lens portion and the fixing portion are substantially elliptical in plan view. the inclined portion has an inclined surface that is a surface of the inclined portion,
The light emitting device according to claim 2 , wherein the inclined surface is disposed on a first straight line that passes through a vertex of the lens portion and is parallel to the first direction in a plan view. The light emitting device according to claim 6 , wherein the inclined surface is disposed on a second straight line that passes through the vertex of the lens portion and is parallel to a second direction that is perpendicular to the first direction in a plan view. 6. The light emitting device according to claim 1, wherein the first lead and the second lead have connection ends exposed from the molded resin member. The light emitting device according to claim 1 , wherein an outer periphery of the fixing portion is larger than an outer periphery of the lens portion in a plan view. The light emitting device according to claim 1 or 4 , wherein the inclined portion has the inclined surface that is curved. The light emitting device according to claim 1 , wherein the first lead has a recess defined by a sidewall and a bottom surface, and the light emitting element is mounted on the bottom surface of the recess. The light emitting device according to claim 11 , wherein the inclined portion is positioned above an upper edge of a side wall of the recess. The light emitting device according to claim 3 , wherein an upper edge of the fixing portion is positioned at the same level as an upper end of the recess or higher than an upper end of the recess. The light emitting device according to claim 1 , wherein the length of the fixing portion in the first direction is 3.4 mm or more and 4.4 mm or less in plan view. 6. The light emitting device according to claim 1, wherein the length of the fixing portion in a second direction perpendicular to the first direction in a plan view is 2.5 mm to 3.5 mm. 6. The light-emitting device according to claim 1, wherein the longest length of the lens portion in a third direction perpendicular to the first direction and a second direction perpendicular to the first direction and in which the first lead and the second lead extend is 0.5 mm or more and 3.5 mm or less. 6. A light-emitting device as described in any one of claims 1 to 5, wherein in a third direction perpendicular to the first direction and a second direction perpendicular to the first direction and in which the first lead and the second lead extend, the longest length of the molded resin member is 5.5 mm or more and 9.5 mm or less. The light emitting device according to claim 1 , wherein the lens portion, the inclined portion, and the fixed portion are integrally formed. a step of preparing an intermediate body in which a pair of first leads and second leads are repeatedly connected by connecting portions, a light emitting element is placed on the first lead of the connected body, and the light emitting element and the second lead are electrically connected via a conductive member;
a step of filling a material for a molded resin member into a casting case having a plurality of recesses; a step of inserting the intermediate body into the recesses filled with the material for the molded resin member, and forming a molded resin member that directly or indirectly covers the light emitting element for each pair of first leads and second leads;
a singulation step of cutting off the connection portion of the coupling body to obtain the pair of first and second leads,
In the step of filling the mold resin member material, the casting case includes a lens portion opening on the bottom side of the casting case, a sloped portion opening that is connected to the lens portion opening and slopes toward the opening side of the casting case, and a fixing portion opening that is connected to the sloped portion opening and is disposed toward the opening side of the casting case,
In the step of forming the molded resin member, the light emitting element is disposed in the fixing portion opening. A light-emitting element;
a first lead on which the light emitting element is mounted;
a second lead electrically connected to the light emitting element via a conductive member and disposed along a first direction and spaced apart from the first lead;
a mold resin member that directly or indirectly covers the light emitting element,
The molded resin member is
a lens portion located above the light-emitting element;
a fixing portion that fixes the first lead and the second lead;
an inclined portion located between the lens portion and the fixed portion, at least a portion of which is inclined and widens from a boundary with the lens portion toward a boundary with the fixed portion,
a light emitting device, the light emitting element being disposed within the fixing portion;
a plurality of the light emitting devices and a mounting substrate on which the light emitting devices are mounted,
the inclined portions are disposed opposite each other in the first direction with the lens portion interposed therebetween,
The light source device, wherein the plurality of light emitting devices are arranged in a direction parallel to the first direction. The light source device according to claim 20, wherein the plurality of light-emitting devices are arranged in multiple rows parallel to the first direction, and three of the light-emitting devices across adjacent rows of the multiple rows form a group, and the light-emitting devices are placed in a position where a line connecting the centers of the three light-emitting devices in each group forms a triangle. 22. The light source device according to claim 20 , further comprising a waterproof member such that a part of the molded resin member is embedded between adjacent ones of the light emitting devices.