JP6190912B1 - lighting equipment - Google Patents

Abstract

Provided is a lighting fixture in which only a reflecting member can be easily replaced while improving the irradiation efficiency of light from a light source. A lighting fixture includes a light source, a light source cover, a reflecting member, and a frame body. The light source 21 emits light. The light source cover 25 transmits light. The reflection member 23 reflects light. The frame body 27 holds the light source 21, the light source cover 25, and the reflecting member 23. The light source cover 25 is at least partially disposed in the region R defined by the reflecting member 23. The light source 21 and the light source cover 25 are fixed to the frame body 27. The reflection member 23 is detachable from the frame body 27. [Selection] Figure 3

Description

  The present invention relates to a lighting fixture.

  A lighting fixture may include a reflecting member that reflects light from a light source in order to improve light distribution or irradiation efficiency (for example, Patent Document 1). The lighting fixture described in patent document 1 can replace | exchange a reflecting plate by removing a reflecting plate from an attachment spring.

JP, 2015-191762, A

  However, in the luminaire described in Patent Document 1, since the lens is positioned outside the reflector, a part of the light from the light source leaks outside the reflector, and the irradiation efficiency of the light from the light source may be reduced. There was sex.

  This invention is made | formed in view of the said subject, The objective is to provide the lighting fixture which can replace | exchange easily only a reflection member, improving the irradiation efficiency of the light from a light source.

  The lighting fixture disclosed in the present application includes a light source, a light source cover, a reflecting member, and a frame. The light source emits light. The light source cover transmits light. The reflection member reflects light. The frame body holds the light source, the light source cover, and the reflecting member. The light source cover is at least partially disposed in a region defined by the reflecting member. The light source and the light source cover are fixed to the frame. The reflection member is detachable from the frame.

  In the lighting fixture disclosed in the present application, it is preferable that the light source cover has a main surface and a side surface. The light source cover preferably has a protrusion on the side surface. The reflecting member preferably has a notch through which the protrusion can pass. It is preferable that the protrusion and the notch do not overlap when viewed from the normal direction of the main surface.

  In the lighting fixture disclosed in the present application, it is preferable that the reflecting member has an opening. The outer diameter of the main surface is preferably smaller than the inner diameter of the opening.

  In the lighting fixture disclosed in the present application, it is preferable that the light source cover has a shape having a lens function.

  According to the present invention, it is possible to easily replace only the reflecting member while improving the irradiation efficiency of light from the light source.

It is a side view which shows the lighting fixture which concerns on embodiment of this invention. It is a front view which shows the lighting fixture which concerns on embodiment of this invention. It is sectional drawing which shows the light source cover vicinity of the lamp main body of a lighting fixture. It is a disassembled perspective view which shows the lamp main body which concerns on embodiment of this invention. It is a perspective view which shows a light source cover. It is a perspective view which shows a reflection member. (A) is a perspective view which shows the lamp main body which concerns on embodiment of this invention. (B) is a disassembled perspective view which shows the lamp main body which concerns on embodiment of this invention. It is a disassembled sectional view which shows the lamp main body which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof is not repeated.

  With reference to FIGS. 1-3, the lighting fixture 1 which concerns on embodiment of this invention is demonstrated. FIG. 1 is a side view showing a lighting fixture 1 according to an embodiment of the present invention. FIG. 2 is a front view showing the lighting fixture 1 according to the embodiment of the present invention. FIG. 3 is a cross-sectional view showing the vicinity of the light source cover 25 of the lamp body 3 of the lighting fixture 1. In FIG. 3, the outer diameter d <b> 1 indicates the outer diameter of the main surface 251. The inner diameter d2 indicates the inner diameter of the opening 31. The outer diameter d3 indicates the outer diameter of the bottom surface portion 255. The inner diameter d4 indicates the inner diameter of the support member 60. The outer diameter d5 indicates the outer diameter of the reflecting member 23. The outer diameter d6 indicates the outer diameter of the support member 60.

  As shown in FIGS. 1 to 3, the luminaire 1 is a plug-type spotlight. The luminaire 1 includes a lamp body 3, an arm 5, a plug unit 7, and a cord 9. The arm 5 holds the lamp body 3. The arm 5 is connected to the plug unit 7. The arm 5 can rotate around the axis A1. Therefore, the lamp body 3 can rotate around the axis A1.

  The plug unit 7 includes a power supply unit 8 that supplies an internal power supply voltage to the lamp body 3. The cord 9 connected to the power supply unit 8 is pulled out from the plug unit 7 and connected to the lamp body 3. The code 9 supplies the internal power supply voltage generated by the power supply unit 8 to the lamp body 3. The plug unit 7 is attached to the wiring duct 11. The power supply unit 8 is supplied with an external power supply voltage from the wiring duct 11. The power supply unit 8 generates an internal power supply voltage based on the external power supply voltage. The wiring duct 11 has a long shape and is fixed to a ceiling wall 13 such as a ceiling.

  The lamp body 3 is rotatable around the axis A2. When the lamp body 3 is rotated and the posture of the lamp body 3 is determined, the arm 5 holds the lamp body 3 so that the posture of the lamp body 3 is maintained constant. The lamp body 3 includes a light source 21, a reflecting member 23, a light source cover 25, a heat sink 27 as a frame body, and an exterior member 29.

  The light source 21 emits light. The light source 21 includes an LED (Light Emitting Diode) group 21a and a substrate 21b. The LED group 21a includes a plurality of LEDs. The LED group 21a forms a substantially circular or substantially polygonal region. The LED group 21a is mounted on a mounting surface of a substrate 21b having a substantially circular shape or a substantially polygonal shape. The LED group 21a is a COB (Chip on Board) type. The COB type is a type in which the LED group 21a is formed by sealing a plurality of LEDs with a phosphor. The LED group 21a may be an SMD (Surface Mount Device) type. In the SMD type, an LED group is formed by forming an LED chip by unitizing an LED and a phosphor, placing a plurality of LED chips on the mounting surface of the substrate 21b, and electrically connecting to the conductive pattern of the substrate 21b. This is the type that forms 21a. Further, instead of the LED group 21a, one LED may be mounted on the substrate 21b.

  The reflection member 23 has a main body portion 23a and a flange portion 23b. The main body portion 23 a extends from the base end 232 toward the tip end 234. The flange portion 23b is connected to the main body portion 23a and extends radially outward. The collar portion 23b is provided on the tip 234 side. The flange portion 23b has, for example, a substantially L-shape when viewed in cross section. A base end 232 of the reflecting member 23 is disposed in the vicinity of the light source 21. The reflecting member 23 reflects the light emitted from the light source 21. The reflecting member 23 has a hollow substantially truncated cone shape, and has a small-diameter opening 31 and a large-diameter opening 33. Each of the opening 31 and the opening 33 is substantially circular. A light source 21 is disposed in the vicinity of the opening 31 so as to be exposed from the opening 31. At least the inner surface of the reflection member 23 is preferably subjected to reflection processing such as white coating, silver coating, or glossy metal plating in order to efficiently reflect the light emitted from the light source 21. The material of the reflecting member 23 may have a color with high light reflectance such as white or silver. For example, the reflecting member 23 is a reflecting mirror.

  The light source cover 25 has a substantially bottomed cylindrical shape. The light source cover 25 is at least partially disposed in the region R defined by the reflecting member 23. The region R is, for example, a region surrounded by the reflective member 23 from the base end 232 to the distal end 234 of the reflective member 23. In the present embodiment, the light source cover 25 protrudes from the proximal end 232 of the reflecting member 23 toward the distal end 234. Therefore, the light source cover 25 is covered with the reflecting member 23. As a result, the light emitted in the lateral direction of the light source cover 25 can be reflected forward, and the irradiation efficiency can be improved. Here, the horizontal direction indicates a direction orthogonal to the optical axis center line LA of the light source 21. The front indicates a direction from the proximal end 232 toward the distal end 234 along the optical axis center line LA. The light source cover 25 faces the light source 21. The light source cover 25 transmits the light emitted from the light source 21 and the light reflected by the reflection member 23 and emits the light toward the light irradiation region. The optical axis center line LA of the light source 21 intersects the light source cover 25. The optical axis center line LA is orthogonal to the light emitting surface of the LED group 21a and passes through the center of the LED group 21a. The light source cover 25 may have a shape having a lens function. The lens function is a function that refracts light to diverge or converge light.

  The heat sink 27 holds the light source 21, the light source cover 25, and the reflecting member 23. The heat sink 27 dissipates heat generated by the light source 21. Specifically, the back surface of the mounting surface of the substrate 21 b of the light source 21 is in contact with the heat absorbing surface of the heat sink 27. Therefore, the heat generated by the light source 21 is transmitted to the heat sink 27 and dissipated by the heat sink 27. As a result, the abnormal temperature rise of the light source 21 can be suppressed. The heat sink 27 is made of a material having high heat conductivity, and is preferably made of, for example, metal. Among metals, it is preferable that the metal is formed of, for example, aluminum or an aluminum alloy in consideration of ease of forming process and weight reduction of the lighting fixture 1.

  The exterior member 29 is substantially cylindrical and has a large-diameter opening 35, a notch 37, and a small-diameter opening 39. Each of the opening 35 and the opening 39 is substantially circular. The exterior member 29 covers the reflective member 23 and a part of the heat sink 27. The light source cover 25 is exposed through the opening 35. The heat sink 27 is exposed from the notch 37 and the opening 39. Therefore, the heat dissipation effect of the heat sink 27 can be improved. The arm 5 holds a portion of the heat sink 27 exposed from the notch 37.

  The lamp body 3 will be further described with reference to FIGS. FIG. 4 is an exploded perspective view showing the lamp body 3 according to the embodiment of the present invention. FIG. 5 is a perspective view showing the light source cover 25. FIG. 6 is a perspective view showing the reflecting member 23. Fig.7 (a) is a perspective view which shows the lamp main body 3 which concerns on embodiment of this invention. FIG. 7B is an exploded perspective view showing the lamp body 3 according to the embodiment of the present invention. FIG. 8 is an exploded sectional view showing the lamp body 3 according to the embodiment of the present invention. FIG. 7B shows the lamp body 3 with the reflecting member 23 removed from the lamp body 3.

  As shown in FIGS. 3 and 4, the lamp body 3 includes a light source 21, a reflecting member 23, a light source cover 25, a heat sink 27, and an exterior member 29, and further a heat radiating sheet 40 and a light source holding member. 50 and a support member 60.

  As shown in FIG. 4, the heat sink 27 includes a plurality of heat radiation fins 271 and a main body portion 276. The plurality of heat radiating fins 271 are substantially plate-shaped and stand up from the main body 276. The radiation fins 271 dissipate heat. Specifically, the heat radiation fin 271 dissipates heat generated by the light source 21. The main body portion 276 has a heat absorbing surface 272. A plurality of screw holes 274 are formed in the heat absorbing surface 272. In the present embodiment, three screw holes 274 are formed in the heat absorbing surface 272. An engagement groove 278 is formed in the main body portion 276. Further, the main body portion 276 has a step portion 279.

  The heat dissipation sheet 40 has heat dissipation properties. The heat dissipation sheet 40 has, for example, a substantially circular shape. The heat radiating sheet 40 has a main body 42. Three through holes 44 are formed in the main body 42.

  The light source holding member 50 holds the light source 21. The light source holding member 50 is a socket, for example. The light source holding member 50 is mainly formed of an insulator. The light source holding member 50 has a main body 52. Three through holes 54 are formed in the main body 52. A screw is passed through the through hole 54 of the light source holding member 50 and the through hole 44 of the heat dissipation sheet 40. Then, the screw is screwed into the screw hole 274 of the heat sink 27. As a result, the light source holding member 50 and the heat dissipation sheet 40 are fixed to the heat sink 27. The light source 21 is fixed to the heat sink 27 via the light source holding member 50. Two engagement holes 56 are further formed in the main body 52.

  As shown in FIG. 5, the light source cover 25 includes a main surface 251, a side surface 252, a bottom surface portion 255, and a claw portion 256. As shown in FIG. 3, the outer diameter d1 of the main surface 251 is smaller than the inner diameter d2 of the opening 31. The light source cover 25 has a protrusion 254 on the side surface 252. The tip of the protrusion 254 is located on the radially outer side than the opening 31. For example, the protruding portion 254 is disposed at a position closer to the bottom surface portion 255 than the main surface 251. The protrusion 254 is smaller than the notch 236 (see FIG. 6) of the reflecting member 23. Specifically, the width d7 of the protrusion 254 is smaller than the width d8 of the notch 236. Therefore, the protrusion 254 can pass through the notch 236. 6 and 7 are different in scale, the width d7 appears to be larger than the width d8 in the drawing.

  The protrusion 254 has, for example, a substantially trapezoidal shape when viewed in cross section. The protruding portion 254 includes a connection surface 254a, a facing surface 254b, a flat surface 254c, an inclined surface 254d, and two side surfaces 254e. The connection surface 254 a is connected to the side surface 252 of the light source cover 25. The facing surface 254b faces the connection surface 254a. The flat surface 254 c is parallel to the bottom surface portion 255 of the light source cover 25. The inclined surface 254d is inclined from the connection surface 254a toward the opposing surface 254b. Each of the two side surfaces 254e is connected to the connection surface 254a, the opposing surface 254b, the flat surface 254c, and the inclined surface 254d. The flat surface 254c is not limited to being parallel to the bottom surface portion 255 of the light source cover 25 and may be an acute angle because at least the base end 232 of the reflecting member 23 is hooked.

  The bottom surface portion 255 is, for example, a substantially annular shape. The bottom surface portion 255 extends from the side surface 252 toward the radially outer side. The outer diameter d3 of the bottom surface portion 255 is larger than the inner diameter d2 of the opening 31 (see FIG. 3). Therefore, the bottom surface portion 255 is in contact with a part of the base end 232 of the reflecting member 23 or with a minute gap therebetween with the reflecting member 23 attached. The light source cover 25 has two claw portions 256 that stand from the bottom surface portion 255. The two claw portions 256 are provided at opposing positions. The claw portion 256 has, for example, a substantially L-shape when viewed in cross section. The claw portion 256 of the light source cover 25 is engaged with the engagement hole 56 of the light source holding member 50. As a result, the light source cover 25 is fixed to the light source holding member 50. Therefore, the light source cover 25 is fixed to the heat sink 27 via the light source holding member 50. In this specification, that the light source 21 and the light source cover 25 are fixed to the heat sink 27 includes a structure in which the light source cover 25 is fixed to the light source holding member 50 as in the present embodiment.

  A plurality of concave portions 258 are formed in the bottom surface portion 255. For example, a part of screws for fixing the light source holding member 50 and the heat radiation sheet 40 to the heat sink 27 can pass through the plurality of recesses 258. Therefore, when the screws are loosened to remove the light source holding member 50 and the heat dissipation sheet 40 from the heat sink 27, the bottom surface portion 255 does not hinder. As a result, the light source holding member 50 and the heat dissipation sheet 40 can be detached from the heat sink 27 with the light source cover 25 attached.

  As shown in FIG. 3, the outer diameter d <b> 5 of the reflecting member 23 is smaller than the inner diameter of the heat sink 27. As shown in FIGS. 4 and 5, the reflecting member 23 has a notch 236. The notch 236 has, for example, a rectangular shape. The notch 236 is large enough to allow the protrusion 254 to pass through. The notch 236 has, for example, a rectangular shape.

  As shown in FIG. 3, the outer diameter d6 of the support member 60 is smaller than the maximum inner diameter of the engagement groove 278 and larger than the minimum inner diameter. Accordingly, the support member 60 engages with the engagement groove 278 of the heat sink 27. Further, the outer diameter d5 of the reflecting member 23 is larger than the inner diameter d4 of the support member 60 and smaller than the outer diameter d6 of the support member 60. Therefore, at least a part of the support member 60 abuts on the reflection member 23, and the support member 60 supports the reflection member 23. As a result, the flange 23b is sandwiched between the support member 60 and the step 279, and the displacement of the reflecting member 23 in the direction of the optical axis center line LA is restricted. The support member 60 is preferably an elastic body. The support member 60 is, for example, a spring. As shown in FIG. 4, the support member 60 has, for example, an arc shape. The support member 60 has an arc portion 62 and a straight portion 64. The arc portion 62 has, for example, an arc shape. The straight part 64 is, for example, linear. The arc portion 62 and the straight portion 64 are connected. The straight portion 64 extends radially inward from the arc portion 62. When the support member 60 is engaged with the engagement groove 278 of the heat sink 27, the arc portion 62 is engaged with the engagement groove 278, and at least a part of the linear portion 64 protrudes from the engagement groove 278.

  A method for attaching the reflecting member 23 to the heat sink 27 will be described. First, from the state shown in FIGS. 7B and 8, the notch 236 of the reflecting member 23 is passed through the protrusion 254 of the light source cover 25. Then, the reflecting member 23 is rotated clockwise or counterclockwise about the optical axis center line LA until the projection 254 and the notch 236 overlap each other when viewed from the normal direction D1 of the main surface 251 of the light source cover 25. . Subsequently, the support member 60 is engaged with the engagement groove 278 of the heat sink 27. As a result, as shown in FIGS. 7A and 3, the support member 60 supports the reflection member 23, and the reflection member 23 is attached to the heat sink 27.

  Next, a method for removing the reflecting member 23 from the heat sink 27 will be described. First, the support member 60 is removed from the engagement groove 278 (see FIG. 3) from the state shown in FIG. 7A and FIG. Since the support member 60 has a straight portion 64 (see FIG. 4) extending radially inward, the arc portion 62 is elastically deformed and reduced in diameter by pulling the straight portion 64 radially inward. The support member 60 can be easily removed from the engagement groove 278. Here, the protrusion 254 and the notch 236 do not overlap as seen from the normal direction D1 of the main surface 251 of the light source cover 25. Further, the tip of the protrusion 254 is located on the radially outer side than the opening 31. Therefore, when the support member 60 is removed from the engagement groove 278, the reflection member 23 is caught by the protrusion 254. Therefore, it is possible to prevent the reflecting member 23 from falling by its own weight when the support member 60 is removed. As a result, it becomes unnecessary for the operator to hold down the reflection member 23 while removing the support member 60, and the replacement work of the reflection member 23 can be facilitated.

  Subsequently, the reflecting member 23 is rotated clockwise or counterclockwise about the optical axis center line LA until the protrusion 254 and the notch 236 overlap each other when viewed from the normal direction D1 of the main surface 251 of the light source cover 25. . Then, the notch 236 of the reflecting member 23 is passed through the protrusion 254 of the light source cover 25. As a result, the reflecting member 23 is removed from the heat sink 27 as shown in FIG.

  Thus, in the lighting fixture 1, the reflecting member 23 can be detached from the heat sink 27. Therefore, in the lighting fixture 1, the reflecting member 23 can be easily replaced without using a tool. As a result, for example, the light distribution angle of the luminaire 1 can be easily changed by replacing the reflection member 23 that is already mounted with another reflection member 23 having a different light distribution angle. Alternatively, the glare can be reduced by replacing the reflective member 23 with a low reflectance such as the black reflective member 23. Detachable means that it can be easily detached without using a tool, for example. Specifically, as in the present embodiment, a structure is included in which the support member 60 regulates the displacement of the reflecting member 23 in the direction of the optical axis center line LA.

  In the luminaire 1, the outer diameter d1 of the main surface 251 of the light source cover 25 is smaller than the inner diameter d2 of the opening 31 of the reflecting member 23. Therefore, in the luminaire 1, only the reflection member 23 can be replaced without removing the light source cover 25. As a result, the reflecting member 23 can be replaced with the light source cover 25 covering the light source 21. Therefore, since the light source 21 is not exposed, it is possible to prevent foreign matter from adhering to the light source 21.

  As described above with reference to FIGS. 1 to 8, in the lighting fixture 1, the light source cover 25 is directed from the proximal end 232 of the reflective member 23 toward the distal end 234 within the region R defined by the reflective member 23. Protrusively arranged. Therefore, the light emitted in the lateral direction of the light source cover 25 can be reflected forward by the reflecting member 23. The reflection member 23 is detachable from the frame (heat sink 27). Therefore, it is possible to easily replace only the reflecting member 23 while improving the irradiation efficiency.

  Further, the lighting fixture 1 includes a support member 60 that supports the reflection member 23. Therefore, the reflecting member 23 can be easily replaced without using a tool.

  Further, in the luminaire 1, the protrusion 254 and the notch 236 do not overlap with each other when viewed from the normal direction D 1 of the main surface 251 of the light source cover 25. Therefore, when the support member 60 is removed from the engagement groove 278, the reflection member 23 is caught by the protrusion 254 even if the reflection member 23 is lowered by its own weight. Therefore, it is possible to prevent the reflecting member 23 from falling by its own weight when the support member 60 is removed. As a result, it becomes unnecessary for the operator to hold down the reflection member 23 while removing the support member 60, and the replacement work of the reflection member 23 can be facilitated.

  The embodiment of the present invention has been described above with reference to the drawings (FIGS. 1 to 8). However, the present invention is not limited to the above-described embodiment, and can be implemented in various modes without departing from the gist thereof (for example, (1) to (9) shown below). In order to facilitate understanding, the drawings schematically show each component as a main component, and the thickness, length, number, and the like of each component shown in the drawings are different from the actual for convenience of drawing. . In addition, the material, shape, dimensions, and the like of each component shown in the above embodiment are merely examples, and are not particularly limited, and various changes can be made without departing from the effects of the present invention. is there.

  (1) As described with reference to FIGS. 1 to 8, in the lighting fixture 1, the support member 60 has an arc shape, but the present invention is not limited to this. For example, the support member 60 may be annular.

  (2) As described with reference to FIGS. 1 to 8, in the lighting fixture 1, one protrusion 254 and one notch 236 are provided, but the present invention is not limited to this. For example, a plurality of protrusions 254 and notches 236 may be provided.

  (3) Although the lighting fixture 1 was a spotlight, this invention may be arbitrary lighting fixtures. For example, the lighting fixture 1 is a downlight.

  (4) As described with reference to FIGS. 1 to 8, in the lighting fixture 1, the main surface 251 of the light source cover 25 is disposed in the region R defined by the reflecting member 23. As long as at least a part of 25 is arranged in the region R, the main surface 251 may be arranged outside the region R. For example, the light source cover 25 may be arranged so that the main surface 251 passes through the opening 33 and protrudes outward.

  (5) As described with reference to FIGS. 1 to 8, in the lighting fixture 1, a part of the light source cover 25 is disposed outside the region R, but the present invention is not limited to this. For example, the entire light source cover 25 may be disposed in the region R.

  (6) As described with reference to FIGS. 1 to 8, in the lighting fixture 1, the light source 21 and the light source holding member 50 are disposed outside the region R, but the present invention is not limited to this. . For example, in addition to the light source cover 25, the light source 21 and the light source holding member 50 may be arranged in the region R. In this case, the outer diameters of the light source 21 and the light source holding member 50 are smaller than the inner diameter of the opening 31 of the reflecting member 23.

  (7) As described with reference to FIGS. 1 to 8, in the lighting fixture 1, the protrusion 254 has a substantially trapezoidal shape in cross-sectional view, but the present invention is not limited to this. For example, the protrusion 254 may be rectangular or triangular in cross-sectional view.

  (8) As described with reference to FIGS. 1 to 8, the lighting apparatus 1 includes the light source holding member 50, but the present invention is not limited to this. For example, the luminaire 1 may directly fix the light source 21 to the heat sink 27 without using the light source holding member 50 with screws. In this case, for example, the light source cover 25 is fixed to the heat sink 27 by fixing means such as claw engagement.

  (9) As described with reference to FIGS. 1 to 8, the lighting fixture 1 includes the support member 60, but the present invention is not limited to this. For example, the luminaire 1 does not include the support member 60 but is provided with a plurality of protrusions 254 of the light source cover 25, and the plurality of protrusions 254 supports the reflection member 23, and the proximal ends of the protrusions 254 and the reflection member 23 The reflection member 23 may be held by the light source cover 25 only by engaging with the outer peripheral edge of the opening 31. In this case, it is preferable that the distance from the base end side of the light source cover 25 to the protruding portion 254 and the thickness of the base end portion of the reflecting member 23 be close to each other. Alternatively, the distance from the base end side of the light source cover 25 to the protruding portion 254 may be different for each protruding portion 254. For example, the light source cover 25 may have a first protrusion and a second protrusion. The distance between the second protrusion and the base end of the light source cover 25 is shorter than that of the first protrusion. Further, the first protrusion and the second protrusion are provided, for example, at positions facing each other in the radial direction of the light source cover 25. In this case, when attaching the reflecting member 23 to the light source cover 25, first, the notch 236 of the reflecting member 23 is passed through the first protrusion. Then, the reflecting member 23 is rotated clockwise or counterclockwise about the optical axis center line LA so that the notch 236 comes to the position of the second protrusion. Subsequently, the notch 236 is passed through the second protrusion. Thereafter, the reflecting member 23 is centered on the optical axis center line LA until the notch 236 overlaps the first protrusion and the second protrusion (for example, an intermediate position between the first protrusion and the second protrusion). Rotate clockwise or counterclockwise. In this way, the reflecting member 23 is attached to the light source cover 25. On the other hand, when removing the reflecting member 23 from the light source cover 25, first, the notch 236 is passed through the second projecting portion and then the notch 236 is passed through the first projecting portion, whereby the reflecting member 23 is removed from the light source cover. 25 is removed.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 21 Light source 23 Reflective member 25 Light source cover 27 Heat sink (frame body)
50 Light source holding member 60 Support member 232 Base end 234 Tip 236 Notch 251 Main surface 252 Side surface 254 Projection portion 278 Engaging groove R region

Claims (3)

A light source that emits light;
A light source cover that transmits light;
A reflective member that reflects light;
A frame that holds the light source, the light source cover, and the reflecting member;
The light source cover is at least partially disposed in an area defined by the reflecting member,
The light source and the light source cover are fixed to the frame,
The reflecting member state, and are detachable from the frame,
The light source cover has a main surface and side surfaces,
The light source cover has a protrusion on the side surface,
The reflective member has a notch through which the protrusion can pass,
The lighting fixture in which the protrusion and the cutout do not overlap when viewed from the normal direction of the main surface . The reflective member has an opening;
The lighting fixture according to claim 1 , wherein an outer diameter of the main surface is smaller than an inner diameter of the opening. The lighting device according to claim 1 , wherein the light source cover has a shape having a lens function.

Images