JP6876972B2 - Lighting device - Google Patents

Description

The present invention relates to a lighting device.

In recent years, from the viewpoint of energy saving, a lighting device (LED lighting) using an LED (Light Emitting Diode) has rapidly become widespread. For LED lighting, a COB (Chip On Board) type or SMD (Surface Mount Device) type LED module is used as a light emitting unit.

The COB type LED module has a structure in which an LED chip is directly mounted on a substrate. Further, the SMD type LED module has a structure in which an SMD type LED element in which an LED chip is packaged is surface-mounted on a substrate.

Conventionally, as LED lighting, a long-shaped lighting device including a long-shaped housing and an LED module arranged in the housing is known (see, for example, Patent Document 1). In such a long-shaped lighting device, a long-shaped LED module is used as a line-shaped light emitting unit (line light source).

For example, a COB type long LED module encloses a long substrate, a plurality of LED chips (light emitting elements) arranged on the substrate along the longitudinal direction of the substrate, and a plurality of LED chips at once. A sealing member for stopping is provided.

Further, the SMD type long LED module includes a long substrate and a plurality of SMD type LED elements (light emitting elements) arranged on the substrate along the longitudinal direction of the substrate.

Japanese Unexamined Patent Publication No. 2012-84367

In the lighting device, the LED module is electrically connected to a power supply unit (power supply circuit) composed of a plurality of circuit elements, and emits light by electric power supplied from the power supply unit. It is known that the power supply unit has a structure (built-in separation type) that is separated from the light emitting unit inside the housing of the lighting device, or a structure that is separately installed as a power supply box or the like outside the housing of the lighting device (external separation type). Has been done.

When the power supply unit of the lighting device is built in the housing, there is an advantage that the construction is easier than when the power supply unit is arranged outside the housing. However, if the power supply unit is built in the housing of the long-shaped lighting device, the height of the lighting device (the height of the housing) becomes high and the outer size of the lighting device becomes large.

Therefore, in order to realize a thin and long lighting device with a built-in power supply unit, a plurality of circuit elements constituting the power supply unit are arranged in parallel with a plurality of light emitting elements arranged in a line. Can be considered. That is, it is conceivable that a plurality of circuit elements and a plurality of light emitting elements are arranged side by side along the longitudinal direction of the housing.

However, when the row of light emitting elements and the row of circuit elements are arranged in parallel, the line-shaped light emitted from the plurality of light emitting elements is partially blocked by the circuit elements. Therefore, there is a problem that the light distribution characteristics of the lighting device are deteriorated because a part of the line-shaped illumination light is lost due to the shadow of the circuit element. Specifically, the circuit element causes an unattractive shadow to be generated in the illumination light.

The present invention has been made to solve such a problem, and even if a plurality of circuit elements are arranged in parallel in a row of light emitting elements in order to make them thinner, deterioration of light distribution characteristics due to the circuit elements is suppressed. It is an object of the present invention to provide a lighting device capable of providing a lighting device.

In order to achieve the above object, one aspect of the lighting device according to the present invention is a long substrate, a plurality of light emitting elements arranged on the substrate along the longitudinal direction of the substrate, and the light emitting element. A housing having a plurality of circuit elements arranged in parallel with a row, a light-shielding portion covering the plurality of circuit elements, and a light-transmitting portion covering the plurality of light-emitting elements, a row of the light-emitting elements, and a row of the circuit elements. It is provided with a partition plate which is located between the two and extends along the longitudinal direction of the substrate.

A thin and long lighting device capable of obtaining desired light distribution characteristics can be easily realized.

It is a perspective view which shows the appearance of the lighting apparatus which concerns on embodiment. It is an exploded perspective view of the lighting apparatus which concerns on embodiment. It is sectional drawing of the lighting apparatus which concerns on embodiment of FIG. It is a figure which shows the state at the time of assembling the lighting apparatus which concerns on embodiment. It is a figure which shows the installation example of the conventional lighting apparatus. It is a figure which shows the installation example of the lighting apparatus which concerns on embodiment. It is a figure which shows the other installation example of the conventional lighting apparatus. It is a figure which shows the other installation example of the lighting apparatus which concerns on embodiment. It is a figure which shows another installation example of the lighting device of the comparative example, and the lighting device which concerns on embodiment. It is sectional drawing which shows the structure of the lighting apparatus which concerns on modification 1. FIG. It is sectional drawing which shows the structure of the lighting apparatus which concerns on modification 2.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that all of the embodiments described below show a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement positions of the components, connection forms, and the like shown in the following embodiments are examples and are not intended to limit the present invention. Therefore, among the components in the following embodiments, the components not described in the independent claims indicating the highest level concept of the present invention will be described as arbitrary components.

Each figure is a schematic view and is not necessarily exactly illustrated. In each figure, substantially the same configuration is designated by the same reference numerals, and duplicate description may be omitted or simplified. In addition, in this specification, "abbreviation" or "about" means including manufacturing error, dimensional tolerance and the like.

Further, in the present specification and the drawings, the X-axis, the Y-axis, and the Z-axis represent the three axes of the three-dimensional Cartesian coordinate system. In the present embodiment, the Z-axis direction is the vertical direction and is perpendicular to the Z-axis. (Direction parallel to the XY plane) is the horizontal direction. The X-axis and the Y-axis are orthogonal to each other and both are orthogonal to the Z-axis.

(Embodiment)
First, the lighting device 1 according to the embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is a perspective view showing the appearance of the lighting device 1 according to the embodiment. FIG. 2 is an exploded perspective view of the lighting device 1. FIG. 3 is a cross-sectional view of the lighting device 1 of FIG.

As shown in FIGS. 1 and 2, the luminaire 1 includes a luminaire 2 and a mounting member 3 for mounting the luminaire 2 on a construction material such as a ceiling or a wall.

The luminaire 2 includes a substrate 10, a plurality of light emitting elements 20, a plurality of circuit elements 30, a housing 40, a partition plate 50, and an end cover 60. In the present embodiment, since the SMD type LED element is used as the light emitting element 20, the SMD type LED module is configured by the substrate 10 and the light emitting element 20.

The mounting member 3 is arranged on the side surface on the side of the plurality of circuit elements 30 out of the two side surfaces along the longitudinal direction of the housing 40. That is, the mounting member 3 is arranged on the side surface of the housing 40 on the light emitting portion side and the side surface on the power supply portion side, which is the side surface on the power supply portion side. The mounting member 3 is a long mounting bracket made of a metal material such as an aluminum alloy. The total length of the mounting member 3 is substantially the same as that of the lighting fixture 2 (housing 40).

When the luminaire 2 is installed on the construction material, first, the mounting member 3 is fixed to the construction material by a screw 4 (see FIG. 2). Next, as shown in FIG. 3, the claw portion 3a is hooked on the groove portion 2a by hooking the groove portion 2a of the lighting fixture 2 on the claw portion 3a of the mounting member 3 fixed to the construction material. As a result, the lighting fixture 2 can be installed on the construction material. The claw portion 3a has, for example, a T-shaped cross section and has a structure of fitting into the groove portion 2a.

The lighting device 1 configured in this way is installed in, for example, a living room or a bedroom of a house and used as indirect lighting such as cove lighting or cornice lighting, or is installed in a kitchen or the like and used as kitchen lighting or the like. Or something. The lighting device 1 may be used not as indirect lighting but as main lighting such as a base light installed on a ceiling or the like.

As shown in FIG. 1, the illuminating device 1 is a thin and long luminaire (slim line illuminating) as a whole, and emits line illuminating light. The overall shape of the lighting device 1 in the present embodiment is a flat rectangular parallelepiped, but the present invention is not limited to this. The lighting device 1 (lighting fixture 2) has, for example, a height of about 15 mm, a width of about 35 mm, and a total length of about 30 cm, but is not limited thereto. For example, the total length of the lighting device 1 may be about 60 cm, about 150 cm, or the like. Further, the aspect ratio (horizontal / vertical) of the lighting device 1 when viewed from the side is about 1 or more and 4 or less.

Hereinafter, each component of the luminaire 2 according to the embodiment will be described in detail with reference to FIGS. 1 to 3.

[substrate]
The substrate 10 is a long plate member. In the present embodiment, the substrate 10 is a long rectangular substrate. That is, the plan view shape of the substrate 10 is a long rectangular shape. As an example, the substrate 10 has a long side length of about 29 cm and a short side length of about 35 mm, but the lengths of the long side and the short side are not limited to this. Further, although one substrate 10 is arranged in the housing 40, a plurality of substrates 10 may be arranged in the housing 40 depending on the length of the housing 40 in the longitudinal direction. Further, the shape of the substrate 10 in a plan view is not limited to a rectangular shape, and may be a curved shape or the like. The substrate 10 is placed on the bottom 41c of the housing 40.

The substrate 10 is a mounting substrate for mounting the light emitting element 20. As the substrate 10, a resin-based resin substrate, a ceramic substrate made of ceramic, a metal-based metal-based substrate, or the like can be used.

As the resin substrate, for example, a glass epoxy substrate made of glass fiber and epoxy resin (CEM-3, FR-4, etc.), a substrate made of paper phenol or paper epoxy (FR-1 etc.), or the like can be used. it can. As the ceramic substrate, an alumina substrate made of alumina, an aluminum nitride substrate made of aluminum nitride, or the like can be used. As the metal base substrate, for example, an aluminum alloy substrate, an iron alloy substrate, a copper alloy substrate, or the like having an insulating film coated on the surface can be used.

The substrate 10 is a printed circuit board on which metal wiring is formed. For example, metal wiring is formed on one main surface (front surface) of the substrate 10 in a pattern having a predetermined shape. The plurality of light emitting elements 20 and the plurality of circuit elements 30, and the light emitting element 20 and the circuit element 30 are electrically connected by a metal wiring (wiring pattern) formed on one main surface of the substrate 10. .. In the present embodiment, a FR-4 double-sided substrate is used as the substrate 10, and a metal film (copper foil or the like) is formed on both main surfaces. The substrate 10 is not limited to the rigid substrate, and may be a flexible substrate made of polyimide or the like and having flexibility.

In the present embodiment, not only the light emitting element 20 but also the circuit element 30 is mounted on the substrate 10. That is, the substrate 10 not only functions as a light source substrate, but also functions as a circuit board. And. In the present embodiment, the region of one main surface of the substrate 10 is divided into two in the width direction, one region is set as a light emitting region (first region) for mounting the light emitting element 20, and the other region is set. The area is set as a circuit area (second area) for mounting the circuit element 30. That is, the light emitting region and the circuit region are two regions adjacent to each other in the width direction of the substrate 10, and extend along the longitudinal direction of the substrate 10, respectively. The width of the light emitting region and the circuit region may be bisected in the width direction, but either one may be larger.

Instead of mounting the circuit element 30 and the light emitting element 20 on the same substrate 10, a substrate different from the substrate 10 on which the light emitting element 20 is mounted is prepared, and the circuit element 30 is mounted on this different substrate. It may be implemented. In this case, for example, the substrate 10 (light source substrate) on which the light emitting element 20 is mounted and the substrate (circuit board) on which the circuit element 30 is mounted are placed side by side on the bottom 41c of the housing 40.

Further, a pair of connectors 11 for receiving electric power for causing the plurality of light emitting elements 20 to emit light are arranged on the substrate 10. The pair of connectors 11 are electrically connected to the plurality of circuit elements 30 by metal wiring formed on the substrate 10, and the electric power received by the pair of connectors 11 is supplied to the circuit elements 30. In the present embodiment, the pair of connectors 11 are electrically connected to an external commercial power source via an electric wire 70 such as a VVF cable, and commercial AC power is supplied to the pair of connectors 11.

The pair of connectors 11 are arranged in the same row as the plurality of circuit elements 30. That is, the pair of connectors 11 are mounted in the circuit region like the circuit element 30, and are arranged side by side with the light emitting element 20. In the present embodiment, the pair of connectors 11 are arranged at the end (or the beginning) of the row of the plurality of circuit elements 30.

Although not shown, when connecting two or more lighting devices 1, another pair of connectors is provided on the opposite side of the pair of connectors 11 on the substrate 10, and the lighting device adjacent to the other pair of connectors is provided. An electric wire (cable) for power feeding for supplying AC power to 1 may be connected. That is, two adjacent lighting devices 1 may be electrically connected by a power feeding electric wire.

[Light emitting element]
The plurality of light emitting elements 20 are light emitting units that serve as light sources for the lighting device 1 (lighting fixture 2). In the present embodiment, the plurality of light emitting elements 20 are arranged in a linear shape (linear shape) such as a linear shape or a curved shape. The plurality of light emitting elements 20 arranged in a line shape function as a line light source that emits a line shape light.

The plurality of light emitting elements 20 are arranged on the substrate 10 along the longitudinal direction of the substrate 10. In the present embodiment, all the light emitting elements 20 on the substrate 10 are mounted on the substrate 10 in a straight line in a row. The element row of the light emitting element 20 composed of the plurality of line-shaped light emitting elements 20 is not limited to a linear shape, may be curved, and may be not limited to one row but may be a plurality of rows. Further, the plurality of light emitting elements 20 are arranged at equal intervals, but the present invention is not limited to this.

The fact that the plurality of light emitting elements 20 are arranged along the longitudinal direction of the substrate 10 is not limited to the case where the rows of the plurality of light emitting elements 20 are parallel to the long side of the substrate 10, and the length of the substrate 10 is not limited. It means that they are arranged from one end in the direction toward the other end.

Each light emitting element 20 is an SMD type LED element in which an LED chip is packaged, and is a white resin or ceramic container having a recess and one or more LED chips primarily mounted on the bottom surface of the recess of the container. And a sealing member sealed in the recess of the container. The sealing member is made of a translucent resin material such as a silicone resin. The sealing member may be a phosphor-containing resin containing a wavelength conversion material such as a phosphor.

The LED chip is an example of a semiconductor light emitting element that emits light by a predetermined DC power, and is a bare chip that emits monochromatic visible light. The LED chip is, for example, a blue LED chip that emits blue light when energized. In this case, in order to obtain white light, the sealing member contains a yellow phosphor such as YAG (yttrium aluminum garnet) that fluoresces the blue light from the blue LED chip as excitation light.

As described above, the light emitting element 20 in the present embodiment is a BY type white LED light source composed of a blue LED chip and a yellow phosphor. Specifically, the yellow phosphor absorbs a part of the blue light emitted by the blue LED chip and is excited to emit the yellow light, and this yellow light and the blue light not absorbed by the yellow phosphor are mixed. Becomes white light.

In the present embodiment, the plurality of light emitting elements 20 are driven by the AC direct method. Therefore, the plurality of circuit elements 30 include a rectifying element that rectifies the AC voltage and converts it into a DC rectified voltage, and the plurality of light emitting elements 20 emit light according to the rectified voltage.

The mode of connection of the plurality of light emitting elements 20 (series connection, parallel connection, connection of a combination of series connection and parallel connection, etc.) is not particularly limited.

[Circuit element]
The plurality of circuit elements 30 form a power supply unit that generates electric power for causing at least the plurality of light emitting elements 20 to emit light.

The plurality of circuit elements 30 are arranged along the longitudinal direction of the substrate 10. Further, the plurality of circuit elements 30 are arranged in parallel with an element sequence including the plurality of light emitting elements 20. That is, the plurality of circuit elements 30 are arranged side by side with the plurality of light emitting elements 20.

As described above, in the present embodiment, the plurality of circuit elements 30 are arranged on the substrate 10. That is, the plurality of circuit elements 30 and the plurality of light emitting elements 20 are arranged on the same substrate and are configured as one module. The plurality of circuit elements 30 and the plurality of light emitting elements 20 are mounted on the same surface of the substrate 10.

The plurality of circuit elements 30 are electronic components (circuit components) that constitute a drive circuit for driving the plurality of light emitting elements 20. In the present embodiment, the plurality of circuit elements 30 include power supply circuit elements constituting a power supply circuit that generates electric power for causing the plurality of light emitting elements 20 to emit light.

The plurality of circuit elements 30 constituting the power supply circuit convert the AC power supplied from the commercial power supply into DC power. The DC power generated by the plurality of circuit elements 30 is supplied to each of the plurality of light emitting elements 20 via the metal wiring formed on the substrate 10, so that each light emitting element 20 emits light. The plurality of circuit elements 30 constituting the power supply circuit include, for example, a capacitive element such as an electrolytic capacitor or a ceramic capacitor, a resistance element such as a resistor, a rectifying element, a fuse, a noise filter, a diode, or a semiconductor element such as an integrated circuit element. And so on.

In the present embodiment, since the light emitting element 20 is driven by the AC direct method, a coil element (inductor) such as a choke coil or a choke transformer, which is a relatively tall circuit element, is not used. Also, as for the capacitor, instead of using one capacitor having a large capacity, the required capacity is distributed to a plurality of short capacitors. Further, in the present embodiment, all the circuit elements 30 are not components with leads, but surface mount type components that are solder-connected on one main surface (mounting surface of the light emitting element 20) of the substrate 10. Therefore, as the capacitor, a surface mount type capacitor is used instead of a capacitor with a lead. As a result, all the circuit elements 30 can be composed of relatively short parts, so that the height of the housing 40 can be lowered to easily realize a thin lighting device 1 (lighting fixture 2). Can be done. Since the light emitting element 20 is also a surface mount type, all the components on the substrate 10 are surface mount type. As a result, all the components on the substrate 10 can be solder-mounted only by reflow.

Further, the plurality of circuit elements 30 include not only power supply circuit elements constituting the power supply circuit, but also control circuit elements for controlling the light emitting state of the light emitting element 20 or communication for communicating with other devices. Circuit elements and the like may be included.

[Case]
The housing 40 is an outer housing that forms the outer shell of the lighting fixture 2, and houses the substrate 10, the light emitting element 20, and the circuit element 30. The housing 40 is composed of a plurality of members. In the present embodiment, the housing 40 includes a first housing 41 including a light-shielding portion that covers a plurality of circuit elements 30 (power supply units), and a light-transmitting unit that covers a plurality of light-emitting elements 20 (light-emitting units). It is composed of two members with two housings 42. Specifically, the entire first housing 41 forms a light-shielding portion, and the entire second housing 42 forms a light-transmitting portion. In the present embodiment, the first housing 41 and the second housing 42 are integrally formed by two-color molding, but the present invention is not limited to this. For example, the first housing 41 and the second housing 42 may be manufactured separately and fixed to each other by a locking structure, an adhesive, screws, or the like.

The first housing 41 is a support member (base) that supports the substrate 10, and is a main body of the lighting device 1. The first housing 41 is entirely made of a light-shielding material. For example, the first housing 41 is made of a white insulating resin material. Therefore, the surface of the first housing 41 is white and has light reflectivity with respect to visible light. The surface of the first housing 41 is not limited to the white light-reflecting surface, and may be a light-reflecting surface made of a metal surface. Alternatively, the first housing 41 may be made of a black insulating resin material, and the surface of the first housing 41 may be a black light absorbing surface instead of a light reflecting surface. In the present embodiment, the first housing 41 is made of white polycarbonate. The first housing 41 may be made of a metal material such as aluminum or iron instead of a resin material.

The first housing 41 has a plate-shaped first front surface portion 41a, a plate-shaped first side surface portion 41b, and a plate-shaped bottom portion 41c that supports the substrate 10. The first front surface portion 41a, the first side surface portion 41b, and the bottom portion 41c are formed so as to extend in the longitudinal direction of the substrate 10. Further, the first front surface portion 41a, the first side surface portion 41b and the bottom portion 41c are integrally formed. For example, the first front surface portion 41a, the first side surface portion 41b, and the bottom portion 41c are integrally formed by resin molding.

The first front surface portion 41a faces the plurality of circuit elements 30. Further, the first front surface portion 41a is formed at a position facing the bottom portion 41c, and the plurality of circuit elements 30 are housed in a space region between the first front surface portion 41a and the bottom portion 41c. The first front surface portion 41a constitutes the outer shell of the luminaire 2, and the outer surface of the first front surface portion 41a is exposed to the outside air.

The first side surface portion 41b is formed so as to stand upright from the first front surface portion 41a. Further, the first side surface portion 41b is formed so as to stand upright on the bottom portion 41c. That is, the first side surface portion 41b is formed so as to stand between the first front surface portion 41a and the bottom portion 41c on each of the first front surface portion 41a and the bottom portion 41c. The first side surface portion 41b is located on the side of the circuit element 30. Further, a connecting portion 41b1 for connecting the lighting fixture 2 to the mounting member 3 is formed on the first side surface portion 41b. The connecting portion 41b1 is formed with a groove portion 2a on which the claw portion 3a of the mounting member 3 is hooked.

The bottom portion 41c is a substrate mounting portion on which the substrate 10 is mounted. As described above, the bottom portion 41c faces the first front surface portion 41a. Specifically, the bottom portion 41c is arranged substantially parallel to the first front surface portion 41a. In the present embodiment, the bottom portion 41c faces not only the first front surface portion 41a but also the second front surface portion 42a of the second housing 42. That is, the bottom portion 41c is formed so as to extend from a position facing the first front surface portion 41a of the first housing 41 to a position facing the second front surface portion 42a of the second housing 42. In the present embodiment, the width length of the bottom portion 41c is obtained by adding the width length of the first front surface portion 41a of the first housing 41 and the width length of the second front surface portion 42a of the second housing 42. It is the combined length.

The second housing 42 is a translucent cover that transmits light emitted from the light emitting element 20. The second housing 42 is entirely made of a translucent material. For example, the second housing 42 is made of a translucent resin material such as acrylic or polycarbonate, or a translucent material such as glass material.

The second housing 42 may further have light diffusivity (light scattering property). By providing the second housing 42 with light diffusivity, it is possible to scatter the light from the light emitting element 20 which is an LED light source having strong directivity. (Brightness unevenness) can be suppressed.

When the second housing 42 is provided with light diffusivity, the second housing 42 may be manufactured by dispersing a light diffusing material such as light-reflecting fine particles in a translucent resin material, or the second housing made of a transparent member. By forming a milky white light diffusing film containing a light diffusing material or the like on the surface (inner surface or outer surface) of the 42, the second housing 42 can be made to have light diffusivity. Alternatively, instead of using a light diffusing material, micro-concavities and convexities are formed on the surface of the second housing 42 made of a transparent member by performing embossing or the like, or dots are formed on the surface of the second housing 42 made of a transparent member. The second housing 42 may be provided with light diffusivity by printing a pattern.

In the present embodiment, the second housing 42 is a light-diffusing cover (diffusion cover) made of polycarbonate and having light diffusivity. The second housing 42 may be configured to control the light distribution of the light emitting element 20. For example, the second housing 42 may have a focusing or diverging lens function.

The second housing 42 has a plate-shaped second front surface portion 42a and a plate-shaped second side surface portion 42b. The second front surface portion 42a and the second side surface portion 42b are formed so as to extend in the longitudinal direction of the substrate 10. Further, the second front surface portion 42a and the second side surface portion 42b are integrally formed. For example, the second front surface portion 42a and the second side surface portion 42b are integrally formed by resin molding.

The second front surface portion 42a faces the plurality of light emitting elements 20. Further, the second front surface portion 42a is formed at a position facing the bottom portion 41c of the first housing 41, and the plurality of light emitting elements 20 are housed in the space area between the second front surface portion 42a and the bottom portion 41c. Has been done. The second front surface portion 42a constitutes the outer shell of the luminaire 2, and the outer surface of the second front surface portion 42a is exposed to the outside air.

In the present embodiment, the outer surface of the second front surface portion 42a is substantially flush with the outer surface of the first front surface portion 41a of the first housing 41. That is, the outer surface of the second front surface portion 42a and the outer surface of the first front surface portion 41a are flush with each other. Specifically, the outer surface of the second front surface portion 42a and the outer surface of the first front surface portion 41a are continuous surfaces without a step. Since the thickness of the second front surface portion 42a and the thickness of the first front surface portion 41a are substantially the same, the inner surface of the second front surface portion 42a and the inner surface of the first front surface portion 41a form substantially the same plane.

The second side surface portion 42b is formed so as to stand upright from the second front surface portion 42a. The second side surface portion 42b is located on the side of the light emitting element 20. The second side surface portion 42b also constitutes the outer shell of the luminaire 2, and the outer surface of the second side surface portion 42b is exposed to the outside air.

As described above, the second housing 42 is formed so that the cross-sectional shape is L-shaped by the second front surface portion 42a and the second side surface portion 42b. Therefore, the light of the light emitting element 20 passes through the second housing 42 having an L-shaped cross section and is emitted to the outside.

Further, the housing 40 has a first groove portion 40a into which one end portion in the width direction of the substrate 10 is inserted, and a second groove portion 40b into which the other end portion in the width direction of the substrate 10 is inserted. The first groove portion 40a and the second groove portion 40b are recesses formed by projecting the bottom portion 41c of the first housing 41 from both ends in the width direction in an L-shaped cross section.

The first groove portion 40a and the second groove portion 40b are guide rails (slide rails) for sliding the substrate 10 in the housing 40, and extend in the longitudinal direction of the housing 40. That is, the first groove portion 40a and the second groove portion 40b hold the substrate 10 so as to be slidable.

As shown in FIG. 4, the substrate 10 can be housed in the housing 40 by inserting the substrate 10 into the first groove portion 40a and the second groove portion 40b and sliding the substrate 10 to move. Specifically, the light emitting element 20 and the circuit element 30 are mounted on the substrate 10 and modularized, and both ends of the modularized substrate 10 are inserted from the ends of the first groove portion 40a and the second groove portion 40b, and the substrate 10 is inserted. Is slid along the longitudinal direction of the housing 40 and pushed inward. At this time, in the substrate 10 inserted into the first groove portion 40a and the second groove portion 40b, the first groove portion 40a and the second groove portion 40b are supported by the first groove portion 40a and the second groove portion 40b at both ends of the substrate 10. The back surface slides on the surface of the bottom portion 41c while being guided by the housing 40 in the longitudinal direction of the housing 40. As a result, the substrate 10 can be held by the first groove portion 40a and the second groove portion 40b. In this way, the substrate 10 is held in the first groove portion 40a and the second groove portion 40b in a state where it can be slidably moved along the longitudinal direction of the housing 40.

In the present embodiment, the substrate 10 is slidably moved and inserted into the first housing 40, but the present invention is not limited to this. Further, the first groove portion 40a and the second groove portion 40b are both provided in the first housing 41, but are not limited to this, and are provided in each of the first housing 41 and the second housing 42. May be good.

[Partition plate]
The partition plate 50 is a partition member that partitions a plurality of light emitting elements 20 (light emitting unit) and a plurality of circuit elements 30 (power supply unit), and in a top view, an element sequence composed of the plurality of light emitting elements 20 and a plurality of circuit elements. It is located between the element train of 30 and extends along the longitudinal direction of the substrate 10. That is, the light emitting element 20 exists on one side of the partition plate 50 in the width direction of the substrate 10, and the circuit element 30 exists on the other side. The shape of the partition plate 50 is, for example, a long rectangular shape.

The partition plate 50 is formed so as to project from the first front surface portion 41a of the first housing 41 of the housing 40 toward the substrate 10. That is, the partition plate 50 is formed so as to stand upright from the first front surface portion 41a.

Further, the partition plate 50 projects to the vicinity of one main surface (front surface) of the substrate 10, but the tip portion of the partition plate 50 does not contact the substrate 10. Therefore, there is a gap between the tip of the partition plate 50 and the substrate 10. The gap between the gaps is, for example, 0.1 mm to 1.0 mm.

In the present embodiment, the partition plate 50 is formed so as to have an L-shaped cross section with the first front surface portion 41a. By providing the partition plate 50 in this way, the circuit element 30 has a housing in which the four directions of up, down, left, and right are surrounded by the partition plate 50, the first front surface portion 41a, the first side surface portion 41b, and the bottom portion 41c. It is stored in 40.

The partition plate 50 may have a light-shielding property. As a result, of the light emitted from the light emitting element 20, the light traveling toward the partition plate 50 is blocked by the partition plate 50. Therefore, the light transmittance of the partition plate 50 should be low. In this case, the partition plate 50 may be translucent and completely block light, but light may slightly pass through the partition plate 50. That is, the fact that the partition plate 50 has a light-shielding property includes not only the case where all the light is absorbed or reflected by the partition plate 50 but also the case where the partition plate 50 transmits light.

In the present embodiment, the partition plate 50 is a part of the first housing 41. That is, the partition plate 50 is integrally formed with the first housing 41. Therefore, the partition plate 50 is made of the same white insulating resin material as the first housing 41 and has light reflectivity. As a result, of the light emitted from the light emitting element 20, the light traveling toward the partition plate 50 is reflected by the partition plate 50 and then emitted to the outside from the second housing 42.

In the present embodiment, the partition plate 50 is made of a resin material, but the present invention is not limited to this, and the partition plate 50 may be a metal plate. Further, although the partition plate 50 is said to be a part of the first housing 41, the present invention is not limited to this, and the partition plate 50 and the first housing 41 may be separate bodies. In this case, the partition plate 50 may be fixed to, for example, the first housing 41, but the present invention is not limited to this.

[End cover]
The end cover (end cover) 60 is an end cap that covers the longitudinal end of the housing 40. In the present embodiment, the end covers 60 are attached to both ends of the housing 40 in the longitudinal direction. At least one of the two end covers 60 is provided with an insertion hole through which the electric wire 70 is inserted. When connecting a plurality of lighting devices 1, the other end cover 60 is provided with an insertion hole through which a power supply line is inserted.

The end cover 60 is fixed to the housing 40 by, for example, an adhesive, a screw, a claw structure, or the like. The end cover 60 is a resin molded product made of a resin material such as polybutylene terephthalate, but may be made of a metal material.

[Effects, etc.]
As described above, the lighting device 1 in the present embodiment includes a long substrate 10, a plurality of light emitting elements 20 arranged on the substrate 10 along the longitudinal direction of the substrate 10, and a row of light emitting elements 20. A housing 40 having a plurality of circuit elements 30 arranged in parallel with the above, a light-shielding portion covering the plurality of circuit elements 30, and a light-transmitting portion covering the plurality of light-emitting elements 20, a row of the light-emitting elements 20, and the circuit elements 30. It is provided with a partition plate 50 which is located between the rows and extends along the longitudinal direction of the substrate 10.

As described above, in the lighting device 1, since the plurality of circuit elements 30 are arranged in parallel in the row of the light emitting elements 20, the height of the housing 40 for accommodating the light emitting elements 20 and the circuit elements 30 can be lowered. Thereby, a long and thin lighting device 1 can be realized.

Moreover, a partition plate 50 is arranged between the row of the light emitting elements 20 and the row of the circuit elements 30. As a result, even if the row of the circuit elements 30 and the row of the light emitting elements 20 are arranged in parallel, the light emitted from the light emitting element 20 that travels toward the partition plate 50 is directed along the longitudinal direction of the substrate 10. The extending partition plate 50 uniformly blocks light. As a result, the line-shaped illumination light emitted from the plurality of light emitting elements 20 can be partially blocked by the circuit element 30 to prevent a part of the line-shaped illumination light from being lost, so that the light distribution of the illumination device 1 can be prevented. Deterioration of characteristics can be suppressed.

As described above, according to the present embodiment, it is possible to easily provide a thin and long lighting device 1 capable of obtaining a desired light distribution characteristic by avoiding shadows generated by the circuit element 30 in the illumination light. It can be realized. For example, it is possible to obtain an illuminating device 1 that irradiates a uniform line-shaped illumination light.

Further, according to the lighting device 1 in the present embodiment, it is possible to produce a noise-free lighting space, which is excellent as indirect lighting. This point will be described in detail below as compared with the conventional lighting device. FIG. 5A is a diagram showing an installation example of the conventional lighting device 100, and FIG. 5B is a diagram showing an installation example of the lighting device 1 according to the embodiment. In FIGS. 5A and 5B, the numerical values are examples.

In FIGS. 5A and 5B, the lighting devices 100 and 1 as indirect lighting are used as cove lighting that reflects light onto the ceiling.

In this case, as shown in FIG. 5A, since the height of the housing is relatively high in the conventional lighting device 100, in order to make the lighting device 100 invisible to the user, the building structure in which the lighting device 100 is installed is used. It is necessary to provide the curtain plate 200. Therefore, the presence of the curtain plate 200 gives the user a heavy impression.

On the other hand, as shown in FIG. 5B, since the lighting device 1 in the present embodiment is thin, it is not necessary to provide a curtain plate in the architectural structure in which the lighting device 1 is installed. As a result, it is possible to reduce the user's heavy impression due to the presence of the curtain plate, and it is possible to realize an architectural structure with a clean impression.

Further, FIG. 6A is a diagram showing another installation example of the conventional lighting device 100, and FIG. 6B is a diagram showing another installation example of the lighting device 1 according to the embodiment. In FIGS. 6A and 6B, the numerical values are examples.

In FIGS. 6A and 6B, the lighting devices 100 and 1 as indirect lighting are used as cornice lighting for reflecting light on a wall surface.

Also in this case, as shown in FIG. 6A, since the height of the housing is relatively high in the conventional lighting device 100, it is necessary to provide the curtain plate 200 in the architectural structure in order to make the lighting device 100 invisible to the user. There is. Therefore, the opening size of the concave portion of the installation location of the lighting device 100 becomes large.

On the other hand, as shown in FIG. 6B, since the lighting device 1 in the present embodiment is thin, it is not necessary to provide a curtain plate in the architectural structure in which the lighting device 1 is installed. As a result, the opening size of the concave portion of the installation location of the lighting device 1 can be reduced to make it slimmer, so that it is possible to realize an architectural structure with a neat impression.

Further, FIG. 7 is a diagram showing another installation example of the lighting device 100A of the comparative example and the lighting device 1 according to the embodiment. In FIG. 7, the numerical value is an example.

A relatively thin luminaire with a height of about 35 mm, such as the luminaire 100A of the comparative example shown in FIG. 7, has been studied, but the luminaire 100A of the comparative example is 1.6 m from the wall. The lighting device 100A can be seen at a place (position at an elevation angle of 21 °).

On the other hand, in the lighting device 1 of the present embodiment, since the height can be reduced to about 15 mm, the lighting device 1 cannot be seen unless it is separated from the wall by 4 m or more (the elevation angle must be 8 ° or less). .. That is, the lighting device 1 cannot be seen within 4 m from the wall.

As described above, according to the lighting device 1 in the present embodiment, the fitting size for the building structure is very excellent. The above numerical values are calculated assuming that the ceiling height is 2.4 m and the user's height is 1.8 m.

Further, since the lighting device 1 in the present embodiment is thin, it is difficult to see even if it is installed on a bare beam or a partition furniture, and even if it is seen, it is not noticeable. At least, it is difficult for the user to see the light emitting element 20 (light emitting unit) of the lighting device 1. As described above, according to the lighting device 1 in the present embodiment, no building structure is required, and the lighting device 1 can be easily constructed only by placing it on a beam or the like.

Further, since the lighting device 1 in the present embodiment is thin, it can be incorporated into a thin shelf board. That is, in general, a shelf board having a thickness of 15 mm is the mainstream, but the lighting device 1 in the present embodiment can be thinned to a height of about 15 mm, so that the thickness is as thin as 15 mm. Even if the plate thickness is large, the lighting device 1 can be incorporated into the shelf plate. As a result, it is possible to realize a shelf board with a built-in lighting device in which the surface of the shelf board and the upper surface of the housing 40 are flush with each other.

As described above, according to the lighting device 1 in the present embodiment, it is possible to eliminate the presence and install it in an architectural structure, and it is possible to produce a noise-free lighting space.

Further, in the lighting device 1 of the present embodiment, the housing 40 is composed of a first housing 41 including a light-shielding portion and a second housing 42 including a light-transmitting portion.

In this way, by configuring the housing 40 with two members, the first housing 41 and the second housing 42, a light-transmitting portion that transmits light from the light emitting element 20 and a light-shielding portion that hides the circuit element 30. Can be easily formed in the housing 40.

Further, in the lighting device 1 of the present embodiment, the partition plate 50 is a part of the first housing 41.

As a result, the partition plate 50 can be formed at the same time when the light-shielding first housing 41 is formed. Moreover, by providing the partition plate 50 in the housing 40, the partition plate 50 functions as a reinforcing plate of the housing 40, and the strength of the long housing 40 can be improved. As a result, it is possible to reduce the bending of the housing 40.

Further, in the lighting device 1 of the present embodiment, the first housing 41 has a first front surface portion 41a facing a plurality of circuit elements 30, and the partition plate 50 is formed from the first front surface portion 41a to the substrate 10. It is formed so as to protrude toward it.

As a result, the light directed from the light emitting element 20 to the circuit element 30 can be effectively blocked by the partition plate 50.

Further, in the present embodiment, the tip end portion of the partition plate 50 is not in contact with the surface of the substrate 10, and a gap exists between the tip end portion of the partition plate 50 and the substrate 10.

As a result, although the structure is such that the tip of the partition plate 50 faces the substrate 10, the substrate 10 can be easily slid into the housing 40 by keeping the tip of the partition plate 50 from contacting the surface of the substrate 10. Can be inserted.

Further, in the lighting device 1 of the present embodiment, the second housing 42 has a second front surface portion 42a having an outer surface that is substantially flush with the outer surface of the first front surface portion 41a of the first housing 41.

As a result, the outer surfaces of the front surfaces of the first housing 41 and the second housing 42 can be flush with each other to make the heights uniform, so that a thin and long lighting device 1 having excellent design can be realized. it can.

Further, in the lighting device 1 of the present embodiment, the first housing 41 has a bottom portion 41c as a substrate mounting portion on which the substrate 10 is mounted.

As a result, the circuit element 30 can be housed by the first housing 41, and the substrate 10 on which the light emitting element 20 is arranged can be supported.

Further, in the lighting device 1 of the present embodiment, in the housing 40, the first groove portion 40a into which one end in the width direction of the substrate 10 is inserted and the other end in the width direction of the substrate 10 are inserted. It has a second groove portion 40b.

As a result, the substrate 10 can be held in the housing 40 by the first groove portion 40a and the second groove portion 40b.

Further, in the lighting device 1 of the present embodiment, the first groove portion 40a and the second groove portion 40b hold the substrate 10 so as to be slidable.

As a result, both ends of the substrate 10 can be inserted into the first groove portion 40a and the second groove portion 40b, and the substrate 10 can be slid and moved along the first groove portion 40a and the second groove portion 40b. Therefore, the substrate 10 on which the light emitting element 20 and the circuit element 30 are mounted can be easily housed in the housing 40.

Further, in the lighting device 1 of the present embodiment, the partition plate 50 has light reflectivity.

As a result, the light from the light emitting element 20 toward the circuit element 30 can be reflected by the partition plate 50 and emitted from the second housing 42 to the outside. Therefore, since the light extraction efficiency can be improved, it is possible to easily realize the illuminating device 1 that irradiates the illuminating light having a high luminous flux while suppressing the deterioration of the light distribution characteristics due to the circuit element.

Further, in the lighting device 1 of the present embodiment, an AC direct method is adopted, and the plurality of circuit elements 30 include a rectifying element that rectifies an AC voltage and converts it into a DC rectified voltage, and a plurality of light emitting elements. 20 emits light according to this rectified voltage.

As a result, the power supply circuit can be configured without using a relatively tall coil element, so that the lighting device 1 can be easily made thinner.

Further, in the lighting device 1 of the present embodiment, the plurality of circuit elements 30 are arranged on the substrate 10.

As a result, the plurality of light emitting elements 20 and the plurality of circuit elements 30 can be arranged on the same substrate 10, so that a small light source module with a power supply circuit can be realized at low cost.

Further, in the lighting device 1 of the present embodiment, a connector 11 for receiving electric power for causing the plurality of light emitting elements 20 to emit light is arranged on the substrate 10, and the connector 11 is in the same row as the plurality of circuit elements 30. It is arranged in. That is, the connector 11 is arranged in the circuit area.

As a result, not only the influence of the shadow of the circuit element 30 but also the influence of the shadow of the connector 11 can be suppressed.

Further, the lighting device 1 in the present embodiment further includes a mounting member 3 for mounting the lighting device 1 on the construction material, and the mounting member 3 is provided on two side surfaces along the longitudinal direction of the housing 40. It is arranged on the side surface of the plurality of circuit elements 30 side.

By arranging the mounting member 3 on the side of the housing 40 in this way, the entire lighting device 1 can be made thinner even if the mounting member 3 is included.

Further, in the lighting device 1 according to the present embodiment, the substrate 10 is linear.

As a result, it is possible to realize the lighting device 1 that emits linear and uniform light.

(Modification example 1)
Next, the lighting device 1A according to the first modification will be described with reference to FIG. FIG. 8 is a cross-sectional view showing the configuration of the lighting device 1A according to the first modification.

In the lighting device 1 in the above embodiment, the partition plate 50 is provided so as to be substantially perpendicular to the substrate 10, but as shown in FIG. 8, in the lighting device 1A in the present modification, the partition plate 50 is provided. The 50A is provided so as to be inclined with respect to the substrate 10. Other than that, the configuration is the same as that of the lighting device 1 in the above embodiment.

As described above, in the lighting device 1A in the present modification, the partition plate 50A is inclined with respect to the substrate 10.

As a result, the partition plate 50A can reflect the light from the light emitting element 20 toward the circuit element 30 diagonally upward. Thereby, the light extraction efficiency can be improved.

Further, by inclining the partition plate 50A, the circuit area (mounting area of the circuit element 30) of the substrate 10 can be expanded without increasing the size (board area) of the substrate 10. As a result, the degree of freedom in the layout of the circuit element 30 and the metal wiring on the substrate 10 can be increased.

Further, by inclining the partition plate 50A, it is possible to prevent the substrate 10 from being erroneously inserted when the substrate 10 (module) on which the light emitting element 20 and the circuit element 30 are mounted is inserted into the housing 40. That is, even if the substrate 10 is inserted into the housing 40 in the opposite directions, the circuit element 30 cannot hit the inclined partition plate 50 and the substrate 10 cannot be inserted into the housing 40. As a result, it is possible to notice that the substrate 10 is erroneously inserted in the opposite direction. Therefore, it is possible to prevent the substrate 10 from being erroneously inserted into the housing 40.

(Modification 2)
Next, the lighting device 1B according to the second modification will be described with reference to FIG. FIG. 9 is a cross-sectional view showing the configuration of the lighting device 1B according to the second modification.

In the lighting device 1B in this modification, a heat sink 80 is further arranged between the bottom portion 41c (board mounting portion) of the first housing 41 and the board 10 with respect to the lighting device 1 in the above embodiment. ing. That is, in the lighting device 1 in the above embodiment, the substrate 10 is directly mounted on the bottom portion 41c so as to be in contact with the bottom portion 41c, whereas in this modification, the substrate 10 is placed via the heat sink 80. It is placed on the bottom 41c.

The heat radiating plate 80 is a metal plate or a metal sheet made of a metal material such as aluminum. Further, as the heat radiating plate 80, for example, one having the same size as the substrate 10 can be used. That is, as the heat radiating plate 80, a rectangular one having the same width and length as the width and length of the substrate 10 can be used.

In this modification, the heat radiating plate 80 is fixed to the back surface of the substrate 10 by screws 90. As a result, when the substrate 10 is inserted into the housing 40, the heat sink 80 can also be inserted into the housing 40.

Further, in this modification, a concave groove 41c1 is formed in the bottom portion 41c so that the screw legs of the screws 90 for screwing the heat radiating plate 80 and the substrate 10 may protrude from the heat radiating plate 80. That is, the concave groove 41c1 is a recess formed so that the screw foot of the screw 90 protruding from the heat radiating plate 80 does not come into contact with the bottom portion 41c1, and is formed so as to allow the screw foot of the screw 90 protruding from the heat radiating plate 80 to escape. ing. The concave groove 41c1 can be formed in a rail shape from one end portion in the longitudinal direction of the housing 40 to the other end portion, for example. As a result, when the substrate 10 to which the heat radiating plate 80 is fixed by the screw 90 is inserted into the housing 40 and slidably moved, the substrate 10 is moved while allowing the screw feet of the screw 90 protruding from the heat radiating plate 80 to escape to the concave groove 41c1. You can slide it.

As described above, the lighting device 1B in the present modification further includes a heat radiating plate 80 arranged between the bottom portion 41c, which is a substrate mounting portion, and the substrate 10 with respect to the lighting device 1 in the above embodiment. ..

As a result, the heat generated by the light emitting element 20 arranged on the substrate 10 can be efficiently heated and dissipated by the heat radiating plate 80. Further, the heat generated by the heat-generating components contained in the plurality of circuit elements 30 arranged on the substrate 10 can also be efficiently heat-dissipated by the heat-dissipating plate 80 to dissipate heat. The heat generating component of the circuit element 30 is, for example, a semiconductor component such as an IC. In this way, by arranging the heat radiating plate 80 between the bottom portion 41c and the substrate 10, it is possible to realize the lighting device 1B having excellent heat radiating properties.

In this modification, the heat radiating plate 80 is arranged as a heat radiating member so as to cover the entire back surface of the substrate 10, but the present invention is not limited to this. For example, a heat radiating member such as a heat radiating plate may be arranged only directly under and around the light emitting element 20, or only directly under and around the heat generating component in the plurality of circuit elements 30.

Further, in this modification, a metal material is used as the heat radiating member, but the present invention is not limited to this. As the heat radiating member, a heat conductive sheet or the like made of a material other than a metal material such as a resin material may be used as long as it is a material having high thermal conductivity. In particular, when a metal member is used as the heat radiating plate 80, an insulating sheet may be inserted between the heat radiating plate 80 and the substrate 10 in order to secure the insulation withstand voltage of the substrate 10. In this case, the insulating sheet has thermal conductivity. It is advisable to use a heat conductive sheet with high insulation.

Further, in this modification, the substrate 10 and the heat radiating plate 80 are screwed together with screws 90, but the present invention is not limited to this. That is, the substrate 10 and the heat radiating plate 80 may be fixed with an adhesive or the like without using the screws 90. Further, the substrate 10 and the heat sink 80 do not have to be fixed.

(Other variants)
The lighting device according to the present invention has been described above based on the embodiment, but the present invention is not limited to the above embodiment.

For example, in the above embodiment, the LED module is an SMD type in which an SMD type LED element is used as the light emitting element 20, but the LED module is not limited to this, and may be a COB type. In this case, an LED chip (bare chip) may be used as the light emitting element 20, a plurality of LED chips may be arranged on the substrate 10, and the plurality of LED chips may be collectively sealed with a line-shaped sealing member.

Further, in the above embodiment, the light emitting element 20 is an LED, but the present invention is not limited to this. For example. As the light emitting element 20, other solid light emitting elements such as a semiconductor laser or an organic EL (Electro Luminescence) may be used.

Further, in the above embodiment, the light emitting element 20 is driven by the power supply circuit by the AC direct method, but the present invention is not limited to this. For example, the light emitting element 20 may be driven by a power supply circuit including a switching power supply including a coil element such as a choke coil or a choke transformer.

Further, in the above embodiment, it is preferable to use as the substrate 10 a multilayer substrate in which a plurality of conductive layers (wiring layers) are laminated via an insulating layer. As a result, the metal wiring of the substrate 10 can be formed by dividing it into a plurality of different wiring layers, so that the lighting device 1 can be easily miniaturized and thinned. Further, since the heat generated by the light emitting element 20 and the circuit element 30 can be efficiently dissipated by using the wiring layer of the multilayer substrate, desired heat dissipation without using the heat sink 80 as in the third embodiment. The characteristics can be obtained. Therefore, a thin lighting device 1 can be easily realized while having excellent heat dissipation.

In addition, a form obtained by applying various modifications to the embodiments and modifications that can be conceived by those skilled in the art, and components and functions in the embodiments and modifications are arbitrarily combined without departing from the spirit of the present invention. The form realized by the above is also included in the present invention.

1, 1A, 1B Lighting device 3 Mounting member 10 Board 11 Connector 20 Light emitting element 30 Circuit element 40 Housing 40a 1st groove 40b 2nd groove 41 1st housing 41a 1st front 41c Bottom (board mounting part)
42 Second housing 42a Second front surface 50, 50A Partition plate 80 Heat sink

Claims (13)

With a long board
A plurality of light emitting elements arranged on the substrate along the longitudinal direction of the substrate,
A plurality of circuit elements arranged on the substrate in parallel with the row of light emitting elements,
A housing having a light-shielding portion that covers the plurality of circuit elements and a light-transmitting portion that covers the plurality of light-emitting elements.
A partition plate located between the row of light emitting elements and the row of circuit elements and extending along the longitudinal direction of the substrate is provided.
The substrate straddles the partition plate in the width direction of the substrate.
The housing has a first groove into which one end in the width direction of the substrate is inserted, and a second groove into which the other end in the width direction of the substrate is inserted.
The housing is composed of a first housing including the light-shielding portion and a second housing including the translucent portion.
The first housing has a first front surface portion facing the plurality of circuit elements, and a substrate mounting portion that is integrally formed with the first front surface portion and on which the substrate is mounted.
The partition plate is integrally formed with the first front surface portion.
The partition plate is a lighting device formed so as to project from the first front surface portion toward the substrate mounting portion. There is a gap between the tip of the partition plate and the substrate.
The lighting device according to claim 1. The second housing has a second front surface portion having an outer surface that is substantially flush with the outer surface of the first front surface portion.
The lighting device according to claim 1 or 2. Further, a heat radiating plate arranged between the substrate mounting portion and the substrate is provided.
The lighting device according to any one of claims 1 to 3. The plurality of circuit elements include at least heat-generating components.
Further, a heat radiating member arranged only directly below and around the heat generating component is provided.
The lighting device according to any one of claims 1 to 3. The first groove portion and the second groove portion hold the substrate so as to be slidable.
The lighting device according to any one of claims 1 to 5. The partition plate has light reflectivity.
The lighting device according to any one of claims 1 to 6. The partition plate is inclined with respect to the substrate.
The lighting device according to any one of claims 1 to 7. The plurality of circuit elements include a rectifying element that rectifies an AC voltage and converts it into a DC rectified voltage.
The plurality of light emitting elements emit light according to the rectified voltage.
The lighting device according to any one of claims 1 to 8. A connector for receiving electric power for causing the plurality of light emitting elements to emit light is arranged on the substrate.
The connector and the plurality of circuit elements are arranged in a linear array.
The lighting device according to any one of claims 1 to 9. The housing has an elongated shape along the longitudinal direction of the substrate.
Further, a mounting member for mounting the lighting device on the construction material is provided.
The mounting member is arranged on the side surface on the side of the plurality of circuit elements out of the two side surfaces along the longitudinal direction of the housing.
The lighting device according to any one of claims 1 to 10. The substrate is linear,
The lighting device according to any one of claims 1 to 11. The substrate is a multilayer substrate.
The lighting device according to any one of claims 1 to 12.

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