JP6429147B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture including a scattering member.

  Lighting devices with various light distribution variations, such as LED (Light Emitting Diode) spotlights and LED universal downlights, have been proposed. When these lighting devices are used, for example, in a store, a food supermarket, a living space, etc., it is possible to produce a light effect (space effect) suitable for the application.

  Conventionally, in an LED spotlight, a technique for controlling the light distribution of scattered light in a direction orthogonal to the optical axis as well as illuminating an irradiation target in a spot manner (for example, Patent Document 1) has been proposed. For example, using LED spotlights to which this technology is applied, in food supermarkets and the like, fresh foods are brightly produced by spot-irradiating fresh foods and scattered in a direction perpendicular to the optical axis. Light can be emitted to create a lively feeling in the store.

JP2013-164987A

  In the spotlight described in Patent Document 1, the configuration of optical components such as a scattering member is complicated. As a result, the means for attaching the optical component to the spotlight main body also becomes complicated.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a lighting fixture to which an optical component including a scattering member can be easily attached.

  In order to achieve the above object, an aspect of a lighting fixture according to the present invention includes a light source that emits light along a predetermined optical axis, the light source that is disposed on the optical axis, and the light from the light source is incident thereon. An optical system having a light incident part, a light emitting part for emitting the light incident from the light incident part, a main body to which the light source and the optical system are attached, and a periphery of the light emitting part. And a translucent scattering member that scatters a part of the light emitted from the light emitting part, a shade disposed at least at a part of the periphery of the scattering member, and the scattering member and the shade. A fixing member for fixing to the main body, and the main body has a holding portion for holding the fixing member, and the fixing member is detachable from the holding portion by elastic deformation. It has a configuration.

  ADVANTAGE OF THE INVENTION According to this invention, the lighting fixture which can attach the optical component containing a scattering member easily can be provided.

FIG. 1 is an external perspective view of a lighting apparatus according to an embodiment. FIG. 2 is an exploded perspective view of the lighting fixture according to the embodiment. FIG. 3 is an exploded perspective view of the fixing member, the shade, and the scattering member according to the embodiment. FIG. 4 is a perspective view of an assembly of a fixing member, a shade, and a scattering member according to the embodiment. FIG. 5 is a side view of the assembly of the fixing member, the shade, and the scattering member according to the embodiment. FIG. 6 is a cross-sectional view of the assembly of the fixing member, the shade, and the scattering member according to the embodiment. FIG. 7 is a cross-sectional view taken along a plane passing through the optical axis of the lighting fixture according to the present embodiment. FIG. 8 is an enlarged view of a cross section by a plane passing through the optical axis of the lighting apparatus according to the present embodiment. FIG. 9 is an external perspective view showing the wiring arrangement of the luminaire according to the embodiment. FIG. 10 is an external perspective view of a lighting fixture including a scattering member. FIG. 11 is an exploded perspective view of a lighting fixture including a scattering member.

(Knowledge that became the basis of the present invention)
Prior to the description of the embodiment of the present invention, knowledge that is the basis of the present invention will be described. Here, the attachment means of the optical component in a lighting fixture provided with a scattering member as described in Patent Document 1 will be described with reference to FIGS.

  FIG. 10 is an external perspective view of a lighting fixture 500 including a scattering member.

  FIG. 11 is an exploded perspective view of a lighting fixture 500 including a scattering member.

  As shown in FIG. 11, the lighting fixture 500 mainly includes a main body 510, a shade 520, and an optical member 530.

  The main body 510 is a mounting base that includes a light source therein and to which the shade 520 and the optical member 530 are attached.

  The seed 520 is a mounting base on which the optical member 530 is attached. Further, the shade 520 is fixed to the main body 510 by two screws 521.

  The optical member 530 is an optical component in which a cylindrical scattering member is provided on the periphery of the Fresnel lens. The optical member 530 is fixed to the shade 520 by two screws 531.

  As described above, in the lighting apparatus 500 shown in FIGS. 10 and 11, the shade 520 and the optical member 530 are fixed by the screw 521 and the screw 531. Therefore, when assembling the lighting apparatus 500, a tool such as a screwdriver is required. Further, as shown in FIG. 11, when the screw 531 is used, a part of the light emitted from the light source is blocked by the screw 531, so that light loss occurs. Further, since the screw 531 is exposed at the light emitting portion of the lighting fixture 500, it is not preferable in terms of design of the appearance.

  This invention is made | formed based on the said knowledge, and it aims at providing the lighting fixture which can attach the optical component containing a scattering member easily.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that each of the embodiments described below shows a preferred specific example of the present invention. Therefore, numerical values, shapes, materials, components, arrangement positions and connection forms of components, steps (procedures), order of steps, and the like shown in the following embodiments are merely examples and are intended to limit the present invention. is not. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.

  Each figure is a schematic diagram and is not necessarily illustrated strictly. Moreover, in each figure, the same code | symbol is attached | subjected to the substantially same structure, The overlapping description is abbreviate | omitted or simplified.

(Embodiment)
[1. overall structure]
First, the whole structure of the lighting fixture 1 which concerns on embodiment is demonstrated using drawing.

  FIG. 1 is an external perspective view of a lighting fixture 1 according to the present embodiment.

  FIG. 2 is an exploded perspective view of the lighting fixture 1 according to the present embodiment.

  The lighting fixture 1 shown by FIG.1 and FIG.2 is used as a spotlight, for example.

  As illustrated in FIG. 2, the lighting fixture 1 includes a main body 10, a light source 20, an optical system 30, a fixing member 40, a shade 50, and a scattering member 60. In the present embodiment, the optical system 30 has a light incident part on which light from the light source 20 is incident and a light emitting part that emits light incident from the light incident part. 320. As shown in FIG. 1, the luminaire 1 is configured by laminating a main body 10, a light source 20, a reflector 310, a lens 320, a fixing member 40, a shade 50 and a scattering member 60 in this order.

  Hereinafter, each component in the lighting fixture 1 is demonstrated in detail.

[1-1. Body]
First, the main body 10 will be described.

  In the present embodiment, the main body 10 is a mounting base to which the light source 20 is attached. The main body 10 also functions as a heat sink that radiates heat generated by the light source 20. The main body 10 is formed in a substantially cylindrical shape using a metal material, and is formed, for example, through an aluminum die casting process.

  Specifically, the main body 10 has an attachment portion for attaching the light source 20. That is, the main body 10 fixes the light source 20 by attaching the light source 20 to the attachment portion. The configuration for fixing the light source 20 to the main body 10 is not limited to the configuration for directly fixing the light source 20 to the main body 10. For example, it is good also as a structure which fixes the light source 20 to the attaching part of the main body 10 via a heat radiating member (heat sink).

  As shown in FIG. 2, the main body 10 is provided with a plurality of radiating fins protruding toward the opposite side to the light emitting direction (Z-axis minus direction in FIG. 2). Thereby, the heat generated by the light source 20 can be efficiently radiated.

  In the present embodiment, an example is shown in which DC power is supplied from a power supply box (not shown) outside the main body 10 via wiring. The routing of the wiring in the main body 10 will be described later. Note that a power circuit may be housed inside the main body 10 and AC power may be supplied from the outside.

[1-2. light source]
Next, the light source 20 will be described.

  The light source 20 is a light emitting module having a light emitting element, for example, and is an LED light source that emits predetermined light radially. The light source 20 is configured to emit white light, for example. The light source 20 includes a base, a plurality of LEDs that are bare chips (LED chips) mounted on the base, and a sealing member that seals the LEDs and includes a phosphor. In the present embodiment, the sealing member collectively seals all LEDs, but the configuration of the sealing member is not limited to this. It is good also as a structure which forms a sealing member in the shape of a plurality of lines along the arrangement direction of LED arranged in the shape of a line.

  Moreover, in the lighting fixture 1 shown by FIG.1 and FIG.2, the optical axis of the light source 20 is a Z-axis direction.

  The base provided in the light source 20 is a mounting substrate for mounting a plurality of LEDs, and is, for example, a ceramic substrate, a resin substrate, an insulating-coated metal base substrate, or the like. The base is, for example, a plate having a plane that is rectangular in plan view, and the bottom surface (the surface on the negative side of the Z axis in FIG. 2) is attached to the main body 10 and fixed. Although not shown, the base is formed with a pair of electrode terminals (a positive electrode terminal and a negative electrode terminal) for receiving DC power for causing the LED to emit light from the outside.

[1-3. reflector]
Next, the reflecting plate 310 will be described. The reflecting plate 310 has a reflecting function, and has a light incident port that is an opening through which light from the light source 20 is incident, and a light emitting port that is an opening through which light incident from the light incident port is emitted from the reflecting plate 310. . In the present embodiment, the light incident port is a light incident part of the optical system 30. A lens 320 is disposed at the light exit of the reflector 310. In order to fix the lens 320, two claw portions 312 are provided at the light exit of the reflector 310. The claw portion 312 is configured so that the lens 320 can be attached and detached by elastic deformation. The number of claw portions 312 may be two or more.

  The reflection plate 310 has an annular frame shape (funnel shape) configured so that the inner diameter gradually increases from the light incident port toward the light output port. For example, a hard white resin material such as polybutylene terephthalate (PBT) is used. Can be formed.

  The inner peripheral surface 311 of the reflecting plate 310 is a reflecting surface that reflects light from the light source 20, and is configured to reflect the light incident from the light incident port and emit the light from the light emitting port.

  Note that the reflective plate 310 may be formed of a metal material such as aluminum. The reflective plate 310 may be formed of resin, and a metal vapor deposition film (metal reflective film) made of a metal material such as silver or aluminum may be formed on the inner peripheral surface 311 of the reflective plate 310.

[1-4. lens]
Next, the lens 320 will be described. The lens 320 is a Fresnel lens that is disposed at a position facing the light source 20 fixed to the main body 10 and emits light incident from the light source 20.

  The lens 320 is disposed at the light exit of the reflecting plate 310. In addition, two concave portions 322 that are engaged with the claw portions 312 of the reflective plate 310 are formed on the periphery of the light emitting surface of the lens 320, and the claw portions 312 and the concave portions 322 are engaged with each other, On the other hand, the lens 320 is fixed. The number of recesses 322 may be two or more and the same number as the claw portions 312. In addition, two first rotation suppression portions 321 for suppressing the rotation of the shade 50 with respect to the lens 320 are formed at the periphery of the light emitting surface of the lens 320. In this Embodiment, the 1st rotation suppression part 321 is a recessed part which has a shape corresponding to the 1st engaging part 51 of the shade 50 mentioned later. Note that the number of the first rotation suppressing portions 321 may be one or more, but for the reason described below, the more the first rotation suppressing portions 321 are arranged at equal intervals, the more the first engaging portions. 51 can be easily inserted into the first rotation suppressing portion 321. That is, when the first engagement portion 51 is inserted into the first rotation suppressing portion 321, the user presses the shade 50 against the lens 320 and rotates the optical axis about the first engagement portion 51 as the first rotation portion. The position to be inserted into the single rotation suppression unit 321 is searched. Therefore, the user rotates the shade 50 in a state where the first rotation suppression unit 321 is not visible, and the rotation of the shade 50 is restricted by the first engagement unit 51 being inserted into the first rotation suppression unit 321. It must sense that it has entered a state. Here, when the user searches for the position of the first rotation suppression unit 321, the greater the number of the first rotation suppression units 321, the smaller the angle at which the shade 50 is rotated before the position can be found. it can. Therefore, the greater the number of first rotation suppressing portions 321, the easier it is to insert the first engaging portion 51 of the shade 50 into the first rotation suppressing portion 321.

  The lens 320 according to the present embodiment is fixed to the reflector 310 as described above, and opposes the light of the light source 20 incident from the light incident surface (the surface on the negative side of the Z axis in FIG. 2) of the lens 320 to the light incident surface. The light is emitted from the light emission surface (the surface on the Z axis plus side in FIG. 2). In the present embodiment, the light exit surface of the lens 320 is a light exit portion of the optical system 30.

  The lens 320 is formed using a translucent material, and can be formed using a transparent resin material such as PMMA (acrylic) or polycarbonate, or a transparent material such as a glass material.

[1-5. Fixed member]
Next, the fixing member 40 will be described. The fixing member 40 is a member for fixing the scattering member 60 and the shade 50 to the main body 10. As shown in FIG. 2, the fixing member 40 has a substantially C-shaped shape and is disposed along the outer peripheral surface of the scattering member 60. The fixing member 40 is formed using an elastic member, and can be formed using a metal material such as iron, for example. Note that the fixing member 40 may be formed using an elastic resin material or the like. The fixing member 40 is configured to be detachable from the main body 10 by elastic deformation.

  The fixing member 40 includes two projecting portions 41 and two handle portions 42. The protrusion 41 is a part for restricting a change in relative position with the scattering member 60. The handle portion 42 is a portion for the user to pick when the fixing member 40 is elastically deformed. The handle portion 42 also has a function of the fixing member 40 gripping the scattering member 60.

[1-6. SEED]
Next, the shade 50 will be described. The seed 50 is a member for protecting the scattering member 60 that is disposed at least partially around the scattering member 60 and is relatively easily damaged. The shade 50 may be used as a mounting base for mounting other optical components such as an optical filter. The seed 50 may be made of, for example, a metal material such as aluminum, or a resin material.

  The seed 50 has a substantially annular lower base 53 and upper base 55, and the lower base 53 is disposed on the light exit surface of the lens 320. Here, it is defined that the shape of “substantially annular” includes not only a complete annular shape but also a shape in which a part of the annular shape is missing. The lower bottom 53 is provided with two first engaging portions 51 that engage with the first rotation suppressing portion 321 of the lens 320. In the present embodiment, the first engaging portion 51 is a convex portion having a shape corresponding to the first rotation suppressing portion 321. Thereby, it is suppressed that the shade 50 rotates with respect to the lens 320. The shade 50 includes four second rotation suppression units 52 for suppressing the scattering member 60 from rotating with respect to the shade 50. In the present embodiment, the second rotation suppressing portion 52 is a columnar member that connects the lower bottom portion 53 and the upper bottom portion 55. In addition, the second rotation suppressing portion 52 is formed with a restricting portion 54 for restricting position fluctuation of the fixing member 40 in the optical axis direction (Z-axis direction in FIG. 2). In the present embodiment, the restricting portion 54 is a portion protruding in the direction away from the optical axis in the second rotation suppressing portion 52, and the fixing member 40 attached around the shade 50 moves in the positive direction of the Z axis. To regulate.

[1-7. Scattering member]
Next, the scattering member 60 will be described. The scattering member 60 is disposed at the periphery of the light emitting part of the optical system 30 (that is, the light emitting surface of the lens 320), and is a translucent member that scatters part of the light emitted from the light emitting part. It is. In the present embodiment, the scattering member 60 has a substantially annular (or substantially cylindrical) shape. The scattering member 60 guides incident light and scatters it on the outer peripheral surface. In the present embodiment, a plurality of annular protrusions are formed over the entire outer periphery of the scattering member 60. The protrusion is formed so that the cross-sectional shape in a plane passing through the optical axis of the light emitted from the optical system 30 is substantially triangular, and light is scattered particularly sharply at the apex of the triangular shape. Thereby, the lively feeling by scattered light can be improved around the luminaire 1.

  The scattering member 60 has four second engaging portions 65 that engage with the second rotation suppressing portion 52 of the shade 50. In the present embodiment, the second engagement portion 65 is a notch corresponding to the shape of the second rotation suppression portion 52. Note that the number of the second engaging portions 65 is not limited to four. The same number of second engagement portions 65 as the second rotation suppression portions 52 may be provided. The scattering member 60 has two third engaging portions 66 that engage with the protruding portions 41 of the fixing member 40. In the present embodiment, the third engaging portion 66 is a notch corresponding to the shape of the protruding portion 41. The scattering member 60 has two fourth engaging portions 67 that engage with the handle portion 42 of the fixing member 40. In the present embodiment, the fourth engagement portion 67 is two end surfaces of the notch portion.

  The scattering member 60 is formed using a translucent material, and can be formed using a transparent resin material such as PMMA (acrylic) or polycarbonate, or a transparent material such as a glass material.

  Details of the structure and function of the scattering member 60 will be described later.

[2. Assembly procedure of lighting equipment]
Next, the assembly procedure of the lighting fixture 1 according to the present embodiment will be described with reference to the drawings.

  FIG. 3 is an exploded perspective view of the fixing member 40, the shade 50, and the scattering member 60 according to the present embodiment.

  FIG. 4 is a perspective view of the assembly 4 of the fixing member 40, the shade 50, and the scattering member 60 according to the present embodiment.

  FIG. 5 is a side view of the assembly 4 of the fixing member 40, the shade 50, and the scattering member 60 according to the present embodiment.

  FIG. 6 is a cross-sectional view of the assembly 4 of the fixing member 40, the shade 50, and the scattering member 60 according to the present embodiment. 6 is a cross-sectional view taken along line 6-6 shown in FIG.

  FIG. 7 is a cross-sectional view taken along a plane passing through the optical axis of the luminaire 1 according to the present embodiment.

  FIG. 8 is an enlarged view of a cross section taken along a plane passing through the optical axis of the luminaire 1 according to the present embodiment. FIG. 8 is an enlarged view of a portion surrounded by a dotted line in FIG. Further, in FIG. 8, an example of a path of light emitted from the light source 20 is shown by a dashed arrow. In FIGS. 7 and 8, the optical axis of the light emitted from the light source 20 is indicated by a one-dot chain line.

  First, a procedure for attaching the light source 20 and the optical system 30 to the main body 10 will be described.

  The light source 20 is attached to the inside of the main body 10 as shown in FIG. Although the fixing means with respect to the main body 10 of the light source 20 is not specifically limited, You may fix the base of the light source 20 with a screw | thread etc. FIG.

  The reflection plate 310 constituting the optical system 30 is disposed with respect to the main body 10 such that the light incident port (that is, the light incident portion 31 of the optical system 30) faces the light source 20. Although the fixing means with respect to the main body 10 of the reflecting plate 310 is not specifically limited, You may fix with the screw from the main body 10 side. Thereby, it can prevent that the light which injects into the reflecting plate 310 is interrupted | blocked by fixing means, such as a screw.

  In the present embodiment, the lens 320 constituting the optical system 30 is indirectly attached to the main body 10 via the reflecting plate 310. As described above, the concave portion 322 is formed in the lens 320. Then, the claw portion 312 of the reflection plate 310 is engaged with the recess 322, so that the lens 320 is fixed to the reflection plate 310.

  Next, a procedure for attaching the fixing member 40, the shade 50, and the scattering member 60 to the main body 10 will be described. In the present embodiment, first, the assembly 4 composed of the fixing member 40, the shade 50, and the scattering member 60 is assembled, and then the assembly 4 is attached to the main body 10.

  When assembling the fixing member 40, the shade 50, and the scattering member 60 shown in FIG. 3, first, the shade 50 and the scattering member 60 are assembled. Specifically, the scattering member 60 is moved in the negative direction of the Z axis with respect to the shade 50 and inserted inside the shade 50. At that time, as shown in FIG. 6, the second rotation suppressing portion 52 is fitted into the second engaging portion 65 of the scattering member 60. Thereby, rotation with respect to the shade 50 of the scattering member 60 is suppressed.

  Next, the fixing member 40 is attached to the outer peripheral surfaces of the shade 50 and the scattering member 60. When attaching the fixing member 40, the user picks the two handle portions 42 of the fixing member 40 and attaches them from the lower bottom 53 side of the shade 50 while elastically deforming so as to widen the interval between the two handle portions 42. Then, as shown in FIG. 6, the handle portion 42 is engaged with the fourth engagement portion 67 of the scattering member 60, and the protruding portion 41 is engaged with the third engagement portion 66 of the scattering member 60. The fixing member 40 is attached to the outer peripheral surfaces of the shade 50 and the scattering member 60 so as to match. Here, in a state in which the fixing member 40 does not receive a force from the outside, the fixing member 40 is formed such that the distance between the two handle portions 42 is larger than the distance between the two fourth engaging portions 67. . That is, in a state where the handle portion 42 is engaged with the fourth engagement portion 67, the handle portion 42 presses the fourth engagement portion 67 with an elastic force. Thereby, the fixing member 40 stably holds the scattering member 60. Further, when the fixing member 40 is attached, the restriction member 54 of the shade 50 restricts the fixing member 40 from shifting from a predetermined position in the Z-axis direction (optical axis direction) shown in FIG.

  By the procedure as described above, the assembly 4 composed of the fixing member 40, the shade 50, and the scattering member 60 as shown in FIGS. 4 and 5 can be assembled.

  In the assembly 4, as described above, the fixing member 40 includes the projecting portion 41 and the handle portion 42 engaged with the third engaging portion 66 and the fourth engaging portion 67 of the scattering member 60, respectively. Fixed to. In addition, the shade 50 restricts the position variation of the fixing member 40 (and the scattering member 60) in the positive direction of the Z axis by the restricting portion 54. In the shade 50, the lower bottom 53 (see FIG. 3 and the like) regulates the positional variation of the scattering member 60 in the negative direction of the Z axis. Therefore, the assembly 4 is integrated and the variation of the relative position is regulated. Thereby, since the fixing member 40, the shade 50, and the scattering member 60 can be collectively attached to the main body 10, attachment to the main body 10, such as the fixing member 40, can be facilitated.

  When disassembling the assembly 4, the handle portion 42 is moved from the fourth engaging portion 67 to the scattering member 60 while the fixing member 40 is elastically deformed so as to narrow the distance between the two handle portions 42 of the fixing member 40. Remove to the outside. And the fixing member 40 is removed from the lower bottom 53 side of the shade 50, elastically deforming the fixing member 40 so that the space | interval of the two handle parts 42 may be expanded.

  Next, a procedure for attaching the assembly 4 to the main body 10 will be described with reference to the drawings.

  As shown in FIG. 8, the main body 10 is formed with a holding portion 11 for holding the fixing member 40. In the present embodiment, the holding portion 11 is a circumferential protruding portion that is provided on the light emitting side of the main body 10 and protrudes toward the optical axis. The holding part 11 is formed so that its inner diameter is smaller than that of the fixing member 40. Therefore, in order to attach the assembly 4 to the main body 10, the elastic member is elastically deformed so that the outer diameter of the fixing member 40 becomes smaller than the inner diameter of the holding portion 11 by a method such as picking the handle portion 42 of the fixing member 40. Then, the assembly 4 is inserted into the main body 10. Here, the assembly 4 is moved in the direction of the light source 20 until the lower bottom 53 of the shade 50 constituting the assembly 4 comes into contact with the periphery of the light emitting portion 32 of the optical system 30 (that is, the light emitting surface of the lens 320). Insert in the negative direction of the Z-axis). Further, when the lower bottom portion 53 of the shade 50 is brought into contact with the light emitting portion 32 of the optical system 30, the first engagement portion 51 provided on the lower bottom portion 53 of the shade 50 is the first rotation suppressing portion 321 of the lens 320. The rotation angle of the assembly 4 with respect to the main body 10 (that is, the lens 320) is adjusted so as to be inserted into the main body 10.

  After the assembly 4 is inserted into the main body 10 until the lower bottom 53 of the shade 50 contacts the light emitting part 32 of the optical system 30, the handle 42 of the elastically deformed fixing member 40 is engaged in the fourth engagement. The position of the fixing member 40 is moved so as to engage with a predetermined position of the portion 67. And the outer diameter of the fixing member 40 narrowed by elastic deformation is returned to the base. Thereby, the fixing member 40 is held by the main body 10. That is, the fixing member 40 restricts position fluctuation in the optical axis direction (Z-axis direction in FIG. 8) of the assembly 4 with respect to the main body 10. In the present embodiment, the position of the fixing member 40 in the positive direction of the Z axis in FIG. Thereby, the position fluctuation | variation to the plus direction of the Z-axis of FIG. 8 of the assembly 4 is controlled. Further, the positional variation of the assembly 4 in the negative direction of the Z axis is regulated by hitting the optical system 30.

  Further, when removing the assembly 4 from the main body 10, the outer diameter of the fixing member 40 is made smaller than the inner diameter of the holding portion 11 by a method such as picking the handle portion 42 of the fixing member 40, as in the case of attachment. The assembly 4 is removed from the main body 10 while being elastically deformed.

  In addition, as FIG. 8 shows, the shade 50 has the attaching part 58 for attaching other elements, such as an optical filter. In the present embodiment, the attachment portion 58 is a groove portion formed on the inner surface of the upper bottom portion 55 of the shade 50.

[3. Structure and function of scattering member]
Next, the detailed structure and function of the scattering member 60 described above will be described with reference to FIG.

  As shown in FIG. 8 and the like, the scattering member 60 has a substantially cylindrical shape, and has an outer peripheral surface 61 for scattering light and an inner peripheral surface 62 for suppressing light scattering. Further, the scattering member 60 has an end portion 63 disposed adjacent to the light emission side (the Z-axis plus direction in FIG. 8) of the light from the light source 20 in the lower bottom portion 53 of the shade 50. That is, the end portion 63 of the scattering member 60 is disposed so as to be in contact with the end surface 57 on the light emission side of the lower bottom portion 53 of the shade 50. Further, the end portion 63 has a protruding portion 64 that protrudes from at least one of both end surfaces in the direction orthogonal to the optical axis of the lower bottom portion 53. That is, the end portion 63 has a protruding portion 64 that protrudes outside the lower bottom portion 53 when viewed from the light source 20 side. In the present embodiment, the scattering member 60 has a protruding portion 64 that protrudes from the end surface 56 on the optical axis side of the lower bottom portion 53 toward the optical axis. In the present embodiment, the projecting portion 64 has a shape projecting toward the light source 20 from the end surface 57 of the lower bottom portion 53. Further, the protruding portion 64 may be in contact with the light emitting portion 32 of the optical system 30 (the light emitting surface of the lens 320).

  As indicated by the dashed arrows in FIG. 8, part of the light emitted from the light source 20 reaches the peripheral edge of the optical system 30 and enters the scattering member 60. The light incident on the scattering member 60 is guided by the scattering member 60 and emitted while being scattered on the outer peripheral surface 61. Note that the inner peripheral surface 62 of the scattering member 60 has a smooth, substantially cylindrical surface shape so that light scattering is suppressed from the outer peripheral surface 61. Thereby, it becomes easy to take in light from the inner peripheral surface 62 into the scattering member 60. Therefore, the amount of light scattered by the outer peripheral surface 61 can be increased.

  Moreover, in this Embodiment, the scattering member 60 has the protrusion part 64 in the edge part 63, Therefore Of the light output from the periphery of the optical system 30, the quantity of the light taken in into the scattering member 60 is included. The ratio can be improved. Furthermore, in the present embodiment, the protrusion 64 has a shape that protrudes toward the light source 20 from the end surface 57 of the lower bottom 53 of the shade 50, thereby further increasing the amount of light taken into the scattering member 60. it can. In particular, when the shade 50 is made of a non-translucent material as in the present embodiment, the effect of the protrusion 64 becomes significant. Further, if the protrusion 64 is formed so that the protrusion 64 is in contact with the light emission surface of the lens 320 (the light emission part 32 of the optical system 30), light is directly incident on the scattering member 60 from the lens 320. The amount of scattered light can be increased.

[4. Wiring management]
Next, wiring of the lighting fixture 1 according to the present embodiment will be described with reference to the drawings.

  FIG. 9 is an external perspective view showing the wiring 15 of the lighting fixture 1 according to the present embodiment.

  As shown in FIG. 9, the lighting fixture 1 according to the present embodiment includes an arm 12 for supporting the main body 10 and a wiring 15 for supplying DC power to the main body 10. A groove 13 is formed in the arm 12. The wiring 15 is disposed in the groove 13. In addition, the arm 12 is formed with a suppressing portion 14 for suppressing the wiring 15 from being detached from the groove portion 13. In the present embodiment, the restraining portion 14 is a protruding portion formed so as to cover a part of the groove portion 13. When the user arranges the wiring 15 in the groove portion 13, the user can put the wiring 15 into the groove portion 13 from the gap 16 that is not covered by the suppressing portion 14. The width of the gap 16 may be approximately the same as the outer diameter of the wiring 15. Further, when the cross-sectional shape of the wiring 15 can be changed, the width of the gap 16 may be made smaller than the outer diameter of the wiring 15. In this case, the wiring 15 can be inserted into the groove 13 by deforming the cross-sectional shape of the wiring 15 into an ellipse and making it thinner than the gap 16.

  By forming the arm 12 as described above, the wiring 15 can be disposed in the groove 13 of the arm 12. Further, the arm 12 does not include a member that completely covers the groove 13, but the restraining portion 14 prevents the wiring 15 from coming off the groove 13. Further, since the groove 13 is not completely covered, the user can easily put the wiring 15 in and out of the groove 13. Further, since the wiring 15 is disposed in the groove portion 13, damage to the wiring 15 can be suppressed. Furthermore, the lighting fixture 1 is preferable in terms of design because the wiring 15 is not conspicuous.

[5. Effect etc.]
As described above, the lighting fixture 1 according to the present embodiment includes the light source 20 that emits light along a predetermined optical axis, and the light incident that is arranged on the optical axis and that receives light from the light source 20. And the optical system 30 having the light emitting part 32 that emits the light incident from the light incident part 31, the main body 10 to which the light source 20 and the optical system 30 are attached, and the light emitting part 32. And the translucent scattering member 60 which scatters a part of light emitted from the light emitting part 32, the shade 50 disposed at least in the periphery of the scattering member 60, the scattering member 60 and the shade 50 And a fixing member 40 for fixing the fixing member 40 to the main body 10, and the main body 10 has a holding portion 11 for holding the fixing member 40, and the fixing member 40 is elastically deformed with respect to the holding portion 11. It has a detachable configuration.

  Thereby, in the lighting fixture 1, the scattering member 60 and the shade 50 can be easily attached by elastically deforming the fixing member 40 without using a tool or the like.

  Moreover, in the lighting fixture 1, the optical system 30 includes a first rotation suppression unit 321 for suppressing the shade 50 from rotating with respect to the main body 10, and the shade 50 corresponds to the first rotation suppression unit 321. You may have the 1st engaging part 51 engaged with the 1st rotation suppression part 321 in the position to do.

  Thereby, even if it is a case where the scattering member 60 and the shade 50 are attached to the main body 10 by the fixing member 40, it can suppress that the shade 50 rotates with respect to the main body 10. FIG. Therefore, the movement of the shade 50 relative to the main body 10 in all directions is restricted and stably fixed. Moreover, in the lighting fixture 1, the shade 50 has the 2nd rotation suppression part 52 for suppressing that the scattering member 60 rotates with respect to the main body 10, and the scattering member 60 is a 2nd rotation suppression part. A second engaging portion 65 that engages with 52 may be provided. Thereby, both the scattering member 60 and the shade 50 can be prevented from rotating with respect to the main body 10. Accordingly, the movement of both the scattering member 60 and the shade 50 in all directions with respect to the main body 10 is restricted, and both the scattering member 60 and the shade 50 are stably fixed to the main body 10.

  Moreover, in the lighting fixture 1, the fixing member 40 may hold | grip the scattering member 60 with an elastic force.

  Thereby, since the fixing member 40 can be fixed to the scattering member 60, the fixing member 40 and the like can be easily attached to the main body 10.

  Further, in the lighting fixture 1, the fixing member 40 has a substantially C shape, the scattering member 60 has a substantially annular outer peripheral surface 61, and the fixing member 40 has a substantially annular outer peripheral surface 61. May be arranged along.

  Thereby, since the fixing member 40 is disposed at a position where the amount of light from the light source 20 is small, the amount of light blocked by the fixing member 40 is suppressed. Therefore, the utilization efficiency of the light emitted from the light source 20 can be improved. Moreover, since the fixing member 40 does not appear in the light emission part, the lighting fixture 1 is preferable also in design.

  Further, in the lighting fixture 1, the fixing member 40 may have handle portions 42 at both ends.

  Thereby, the user can elastically deform the fixing member 40 easily.

(Variations, etc.)
As mentioned above, although the illuminating device concerning this invention was demonstrated based on embodiment, this invention is not limited to the said embodiment.

  For example, in the above-described embodiment, an example in which an LED light source is used as the light source 20 has been described. However, any other light source such as an organic EL (Electro Luminescence) light source can be used as the light source 20.

  For example, in the above embodiment, a COB (Chip On Board) type light emitting module in which a plurality of LEDs that are bare chips are directly mounted on the base is adopted as the light source 20, but other solid state light emitting elements may be used. . For example, as a light source, an SMD type light emitting module in which a surface mount (SMD) type LED is mounted on a base may be used. Moreover, you may use other solid light emitting elements, such as an organic EL element.

  In the above-described embodiment, the configuration in which the reflector 310 and the lens 320 are used as the optical system 30 has been described. However, the optical system 30 is not limited thereto. For example, a configuration using only the reflection plate 310 or a configuration using a hybrid lens or the like may be used.

  Moreover, in the said embodiment, although the substantially cyclic | annular shape was employ | adopted as a shape of the scattering member 60 and the shade 50, the shape of the scattering member 60 and the shade 50 is not restricted to this. For example, the cross section may have a substantially C shape.

  Further, in the present embodiment, a shape that protrudes toward the optical axis is employed as the shape of the protruding portion 64 of the scattering member 60, but any shape that can capture light from the light source 20 may be used. For example, you may protrude in the direction away from an optical axis.

  Moreover, the shape of each engaging part shown in the said embodiment is an example, Comprising: Another shape may be sufficient. For example, in the above-described embodiment, the configuration in which the fixing member 40 is attached to the scattering member 60 is used. However, the fixing member 40 is attached to the shade 50, and the engagement between the shade 50 and the scattering member 60 is changed accordingly. May be. Moreover, in the said embodiment, although the 1st engaging part 51 was provided in the shade 50, you may provide in the scattering member 60. FIG.

  In the above embodiment, the first rotation suppression unit 321 is provided in the optical system 30, but may be provided in the main body 10.

  Moreover, in the said embodiment, although the 1st engaging part 51 was provided in the shade 50, you may provide in the scattering member 60. FIG.

  Further, in the above embodiment, the fixing member 40 is configured to grip the scattering member 60, but may be configured to grip the shade 50.

  In the above embodiment, the fixing member 40 is configured to elastically grip the scattering member 60. However, the fixing member 40 may be configured to grip at least one of the scattering member 60 and the shade 50 using means other than elastic force. Good. For example, it is good also as a structure which forms a recessed part in the scattering member 60 and the shade 50, and provides the fixing part 40 with the convex part fitted to the said recessed part.

  Moreover, in the said embodiment, although the substantially C-shaped shape was employ | adopted as the shape of the fixing member 40, the shape of the fixing member 40 is not restricted to this. For example, the shape of the fixing member 40 can be annular.

  Moreover, in the said embodiment, although the shade 50 was comprised from the non-translucent material, you may comprise from the translucent material. However, as described above, when the shade 50 is made of a non-translucent material, the light capturing effect of the protruding portion 64 of the scattering member 60 is more remarkable.

  Moreover, in the said embodiment, although it was set as the structure which suppresses rotation with respect to the main body 10 of the scattering member 60 and the shade 50, it is good also as a structure which permits rotation.

  In addition, a form obtained by making various modifications conceivable by those skilled in the art with respect to the embodiment, or realized by arbitrarily combining the components and functions in the embodiment or the modification without departing from the gist of the present invention. Also included in the present invention

DESCRIPTION OF SYMBOLS 1,500 Lighting fixture 10,510 Main body 11 Holding part 20 Light source 30 Optical system 31 Light incident part 32 Light emitting part 40 Fixing member 41, 64 Protrusion part 42 Handle part 50, 520 Sade 51 First engagement part 52 2nd rotation Suppression part 60 Scattering member 61 Outer peripheral surface 65 Second engagement part 321 First rotation suppression part

Claims (7)

A light source that emits light along a predetermined optical axis;
An optical system that is disposed on the optical axis and has a light incident part on which the light from the light source is incident, and a light emitting part that emits the light incident from the light incident part;
A main body to which the light source and the optical system are attached;
A translucent scattering member that is disposed on the periphery of the light emitting portion and scatters a part of the light emitted from the light emitting portion;
A shade disposed on at least a part of the periphery of the scattering member;
A fixing member for fixing the scattering member and the shade to the main body,
The main body has a holding portion for holding the fixing member;
The fixing member may have a detachable with respect to the holding portion by elastic deformation,
The fixing member is attached to the outer peripheral surface of the scattering member and the shade, and is a lighting fixture that grips the scattering member and the shade by an elastic force . At least one of the optical system and the main body has a first rotation suppression unit for suppressing at least one of the scattering member and the shade from rotating with respect to the main body.
The lighting fixture according to claim 1, wherein at least one of the scattering member and the shade has a first engagement portion that engages with the first rotation suppression portion at a position corresponding to the first rotation suppression portion. One of the scattering member and the shade has a second rotation suppression unit for suppressing the other of the scattering member and the shade from rotating with respect to the main body,
The lighting fixture according to claim 2, wherein the other of the scattering member and the shade has a second engaging portion that engages with the second rotation suppressing portion. The fixing member has a substantially C-shaped shape,
Wherein one of said outer peripheral surface of the scattering member and the shade has a generally annular shape, and, according to any one of claims 1 to 3, wherein the fixing member is attached to the outer peripheral surface of the substantially annular lighting equipment. The lighting fixture according to claim 4 , wherein the fixing member has handle portions at both ends. The fixing member has a protrusion that regulates a change in relative position with the scattering member,
  The scattering member has a third engagement portion that engages with the protrusion.
  The lighting fixture of any one of Claims 1-5. The shade includes a restricting portion that restricts a change in relative position of the fixing member in the direction of the optical axis.
  The lighting fixture of any one of Claims 1-6.

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