JP2017010657A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of suppressing light extraction efficiency while suppressing glare and illuminance unevenness of illumination light.SOLUTION: A lighting fixture comprises: a light source unit 10; a fixture body 2 having a reflection part 20 reflecting light from the light source unit 10 and a frame part 30 passing through the light reflected by the reflection part 20; and a light transmission member 40 transmitting the light reflected by the reflection part 20. The light transmission unit 40 includes a main body part 41 on which the light reflected by the reflection part 20 is incident; and an extension part 42 provided to extend from a second opening portion 32 (light-emission-side opening portion) of the frame part 30 toward the light source unit 10 along an inner surface of the frame part 30, a flange part 43 supported by the fixture body 2 being formed on the extension part 42.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a lighting fixture.

  Conventionally, as a lighting fixture, for example, a ceiling-embedded lighting fixture that is embedded in a mounting portion such as a ceiling and emits light downward, such as a downlight, or is embedded in a ground and arranged upward. Underground lighting fixtures that emit light are known.

  This type of lighting fixture includes a light source unit configured by LEDs (Light Emitting Diodes), a cylindrical reflection unit that reflects light emitted from the light source unit in order to increase the light use efficiency, and light from the reflection unit. A frame body portion that is disposed in the opening on the emission side and is attached to the ceiling.

  Since the light of the LED has strong directivity, the illumination light using the LED as a light source feels that the illumination light is dazzling or uneven illuminance occurs. For this reason, in order to suppress glare and illuminance unevenness, a technique has been proposed in which a flat plate-shaped light-transmitting member having diffusibility is provided on the light emission side of the light source unit (for example, Patent Document 1).

JP 2009-187773 A

  In order to suppress the glare of illumination light and the illuminance unevenness as much as possible in the luminaire, the translucent member arranged on the light emitting side of the light source unit may be regarded as one pseudo light source. In this case, the translucent member is arranged as much as possible in the light emitting side opening of the reflecting portion or the opening of the frame body portion so that the reflecting surface of the reflecting portion is not exposed to the outside (so as not to be visible to the user). The reflective part is covered with a translucent member.

  In this case, in order to support the translucent member at such a position, a flange portion projecting inwardly (in the center direction of the opening portion) to the opening portion of the light emitting side of the reflecting portion or the opening portion of the frame body portion. It is necessary to provide a protruding structure such as a collar.

  However, when such a protruding structure is provided, the light emitted from the frame portion is blocked by the protruding structure, and the light emitting area of the translucent member is reduced. As a result, there arises a problem that the light extraction efficiency is lowered.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a lighting fixture that can suppress a decrease in light extraction efficiency while suppressing glare and illumination unevenness of illumination light. To do.

  In order to achieve the above object, one aspect of a lighting fixture according to the present invention includes a light source unit, a reflection unit that reflects light from the light source unit, and a frame unit that passes light reflected by the reflection unit. An instrument main body, and a translucent member that transmits light reflected by the reflecting portion, the translucent member including a main body portion on which light reflected by the reflecting portion is incident, and a light emitting side of the frame body portion. An extending portion extending from the opening along the inner surface of the frame body portion toward the light source portion, and a flange portion supported by the instrument body is formed in the extending portion. ing.

  The lighting fixture which can suppress the fall of the extraction efficiency of light can be implement | achieved, suppressing the glare of illumination light and illumination intensity nonuniformity.

It is a perspective view when the lighting fixture which concerns on Embodiment 1 is seen from diagonally upward. It is a perspective view when the lighting fixture which concerns on Embodiment 1 is seen from diagonally downward. 2 is an exploded perspective view of the lighting fixture according to Embodiment 1. FIG. 2 is a cross-sectional view of the lighting fixture according to Embodiment 1. FIG. In the lighting fixture which concerns on Embodiment 1, it is an expanded sectional perspective view which shows the location where the reflection part and the frame part were fixed with the screw. It is a disassembled perspective view of the reflective part in the lighting fixture which concerns on Embodiment 1, a frame part, and a translucent member. It is a perspective view which shows a state when the reflection part in the lighting fixture which concerns on Embodiment 1 and a frame part, and the translucent member are combined. FIG. 6 is a cross-sectional view of a lighting fixture according to a modification of the first embodiment. It is sectional drawing of the lighting fixture which concerns on Embodiment 2. FIG. 6 is a cross-sectional view of a lighting fixture according to Embodiment 3. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Each of the embodiments described below shows a preferred specific example of the present invention. Accordingly, numerical values, shapes, materials, components, arrangement positions and connection forms of components shown in the following embodiments are merely examples, and are not intended to limit the present invention. 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)
First, the structure of the lighting fixture 1 which concerns on Embodiment 1 is demonstrated using FIG. 1A, FIG. 1B, FIG.2 and FIG.3. FIG. 1A is a perspective view when the lighting fixture 1 according to Embodiment 1 is viewed obliquely from above, and FIG. 1B is a perspective view when the lighting fixture 1 is viewed from diagonally below. FIG. 2 is an exploded perspective view of the luminaire 1, and FIG. 3 is a cross-sectional view of the luminaire 1. In FIG. 2, the screws are omitted.

  The luminaire 1 according to the present embodiment is embedded in a downlight or the like that illuminates light downward (floor, ground, walls, etc.) by being embedded in a mounted portion such as a ceiling in a building such as a house. Type lighting fixture.

  As shown in FIGS. 1A to 3, the lighting fixture 1 includes a light source unit 10, a fixture body 2 having a reflection unit 20 and a frame body unit 30, and a translucent member 40. The luminaire 1 further includes a packing 50, a base 60, a reflecting portion 70, a mounting member 81, a holder 82, a mounting spring 90, and a screw 100. In this Embodiment, the reflection part 20, the frame part 30, and the base 60 are the outline members of the lighting fixture 1, and comprise the housing | casing. Hereinafter, each component of the lighting fixture 1 will be described in detail.

[Light source]
The light source unit 10 is an LED light source (LED module) having LEDs. The light source unit 10 is, for example, a white LED light source that emits white light. The light source unit 10 has, for example, a COB (Chip On Board) structure, and includes a substrate, a plurality of LEDs mounted on the substrate, and a sealing member that seals the LEDs.

  The substrate is a mounting substrate for mounting the LED, and is, for example, a ceramic substrate, a resin substrate, a metal base substrate, or the like. The substrate is formed with a pair of electrode terminals for receiving DC power for causing the LED to emit light from the outside and a metal wiring having a predetermined pattern for electrically connecting the LED.

  An LED is an example of a light emitting element, and in this embodiment, an LED is a bare chip that emits monochromatic visible light. The LED is, for example, a blue LED chip that emits blue light when energized. For example, a plurality of LEDs are arranged in a matrix on a substrate, are formed on the substrate, and are electrically connected to each other by metal wiring. Note that at least one LED may be arranged.

  For example, a translucent resin is used as the sealing member. The sealing member in this Embodiment contains the fluorescent substance as a wavelength conversion material which wavelength-converts the light from LED. The sealing member is, for example, a phosphor-containing resin in which a phosphor is dispersed in a silicone resin. As the phosphor particles, when the LED is a blue LED that emits blue light, for example, a YAG yellow phosphor can be used to obtain white light. In the present embodiment, the sealing member is formed in a circular shape so as to collectively seal all LEDs, but a plurality of LEDs may be sealed in a line shape for each column, and each LED may be sealed. May be individually sealed.

  The light source unit 10 configured as described above is fixed to the base 60 by a mounting member 81 and a holder 82 as shown in FIGS. The attachment member 81 and the holder 82 are members for attaching the light source unit 10 to the base 60. The attachment member 81 is a frame made of an insulating resin material formed so as to surround the light source unit 10 in order to restrict the movement of the light source unit 10 in the horizontal direction of the main surface of the substrate. The mounting member 81 is fixed to the base 60 by inserting two screws (not shown) into the through holes provided in the mounting member 81 and screwing them into the screw holes of the base 60. The holder 82 functions not only as a function of holding the light source unit 10 but also as a current-carrying connector, and has a holder body made of insulating resin and conductive connection terminals. The holder 82 is fixed to the base 60 by inserting a screw (not shown) into a through hole provided in each of the holder 82 and the attachment member 81 and screwing it into a screw hole of the base 60.

  In addition, the electrode terminal of the board | substrate of the light source part 10 and a power supply device (not shown) are electrically connected through a holder. The power supply device converts, for example, AC power from an external power source such as a commercial power source into DC power of a predetermined level by rectification, smoothing, step-down, etc., and converts the DC power via a power line such as a lead wire and the holder 82. The light source unit 10 is supplied.

[Reflector (auxiliary reflector)]
The reflection unit 20 reflects the light emitted from the light source unit 10. That is, the light from the light source unit 10 is reflected by the reflection unit 20. As shown in FIGS. 2 and 3, the reflecting portion 20 is a cylindrical reflector (reflecting plate), an incident opening 21 into which light from the light source unit 10 is incident, and light incident from the incident opening 21. And an emission opening 22 from which the light is emitted.

  The incident opening 21 is an opening (opening) on the light incident side provided at the end of the reflecting unit 20 on the light source unit 10 side. In the present embodiment, the incident opening 21 is formed so as to surround the emission opening 72 of the reflecting section 70.

  On the other hand, the exit opening 22 is an opening (opening) on the light exit side provided at the end of the reflecting unit 20 on the frame body 30 side. The frame body 30 and the translucent member 40 are disposed in the emission opening 22.

  Further, the reflecting portion 20 is provided with a flange portion 23. In the present embodiment, the flange portion 23 is formed so as to protrude outward at the emission opening 22.

  The inner surface of the reflection unit 20 is a reflection surface that reflects light from the light source unit 10. Specifically, the inner surface of the reflection unit 20 reflects the light reflected by the reflection unit 70. In the present embodiment, the reflection unit 20 reflects light emitted from the light source unit 10 in order to increase the light use efficiency. That is, the reflection unit 20 functions as an auxiliary reflection plate (auxiliary reflection member) of the luminaire 1 and does not actively perform direct light orientation control from the light source unit 10. The light reflected by the reflection unit 20 enters the light transmissive member 40.

  The reflecting portion 20 is made of a metal material such as aluminum or iron, and can be produced by, for example, pressing a metal plate. In the present embodiment, the overall shape of the reflecting portion 20 is a bottomed cylindrical shape (cup shape) in which the bottom portion is formed in a donut shape. In addition, the reflection part 20 is not restricted to a metal material, You may form with resin materials, such as a polybutylene terephthalate (PBT). In this case, the reflection part 20 is good to form with a hard white resin material.

  The reflection part 20 configured in this way is fixed to the frame body part 30 by a screw 100 as shown in FIGS. 1A and 1B. Although not shown, the reflecting portion 20 is also fixed to the base 60 with screws. That is, the reflection part 20, the frame part 30, and the base 60 are mutually connected and fixed by the screw.

[Frame body]
The frame body part 30 is a cylindrical frame body through which the light reflected by the reflection part 20 passes. As shown in FIGS. 2 and 3, the frame 30 includes a first opening 31 provided at an end on the light source 10 side, and a second opening 32 provided on an end on the light transmitting member 40 side. Have

  The first opening 31 is an opening (opening) on the light incident side provided at the end of the frame body 30 on the light source unit 10 side. On the other hand, the second opening 32 is a light emitting side opening (opening) provided at an end of the frame 30 on the light emitting side.

  The frame body portion 30 is configured to surround the translucent member 40. In the present embodiment, the frame body portion 30 is configured by double wall portions, and a cylindrical inner wall portion 33 surrounding the extending portion 42 of the translucent member 40 and a cylindrical shape surrounding the inner wall portion 33. And an outer wall portion 34.

  Further, the frame body portion 30 has a flange portion 35 that protrudes outward in the radial direction. When the lighting fixture 1 is disposed in the opening of the ceiling, the flange portion 35 is locked to the ceiling surface to fix the lighting fixture 1 to the ceiling.

  As shown in FIGS. 4 to 6, a screw hole portion 36 is provided between the inner wall portion 33 and the outer wall portion 34. FIG. 4 is an enlarged cross-sectional perspective view showing a portion where the reflecting portion 20 and the frame body portion 30 are fixed by the screw 100. FIG. 5 is an exploded perspective view of the reflecting portion 20, the frame body portion 30, and the translucent member 40, and FIG. 6 shows a state when the reflecting portion 20, the frame body portion 30, and the translucent member 40 are combined. It is a perspective view shown.

  In the present embodiment, three screw hole portions 36 are provided at equal intervals along the circumferential direction of the frame body portion 30. As shown in FIG. 4, the frame body portion 30 and the reflection portion 20 insert a screw 100 into a through hole provided in the reflection portion 20 and screw the screw 100 into the screw hole portion 36 of the frame body portion 30. It is fixed with.

  The frame body portion 30 configured in this manner can be formed of a metal material such as aluminum, for example. The material of the frame 30 is not limited to a metal material, and may be a resin material.

  Further, as shown in FIG. 5, an attachment spring 90 is attached to the frame body portion 30. The attachment spring 90 is an elastic member for attaching the lighting fixture 1 to an attachment portion such as a ceiling, and has, for example, a leaf spring structure. In the present embodiment, three attachment springs 90 are attached to the outer peripheral surface of the outer wall portion 34 of the frame body portion 30. The attachment spring 90 is formed of a metal plate such as iron, for example.

[Translucent member]
The translucent member 40 is an optical component made of a translucent member. The translucent member 40 is comprised by translucent materials, such as transparent resin materials, such as an acryl and a polycarbonate, or glass material, for example.

  In the present embodiment, the translucent member 40 further has light diffusibility. As the translucent member 40 having light diffusibility, for example, a milky white diffusion panel in which a light diffusing material is dispersed can be used. Such a translucent member 40 can be produced by resin-molding a transparent resin material (base material) mixed with a light diffusing material into a predetermined shape. As the light diffusing material, light reflective particles such as silica particles can be used.

  As shown in FIG. 3, the translucent member 40 is disposed at a position facing the light source unit 10 and transmits light from the light source unit 10. The translucent member 40 transmits the light reflected by the reflecting unit 20. In the present embodiment, the translucent member 40 transmits not only the reflected light from the reflecting unit 20 but also the direct light from the light source unit 10 and the reflected light from the reflecting unit 70.

  The translucent member 40 includes a main body portion 41, an extending portion 42, and a flange portion 43. The light reflected by the reflecting portion 20 is incident on the main body portion 41. Further, not only the reflected light reflected by the reflecting unit 20 but also the direct light from the light source unit 10 and the light reflected by the reflecting unit 70 are incident on the main body 41.

  An outer peripheral end portion of the main body portion 41 is located in the second opening portion 32 of the frame body portion 30. Specifically, the outer surface of the outer peripheral end portion of the main body portion 41 and the surface of the flange portion 35 of the frame body portion 30 are flush with each other. Thereby, since the height difference of the connection part of the translucent member 40 and the frame part 30 can be eliminated, the designability can be improved.

  Moreover, at least a part of the outer surface of the main body 41 is curved toward the light source unit 10 side. In the present embodiment, the thickness of the main body 41 is substantially constant, and the outer surface and the inner surface of the main body 41 are curved toward the light source unit 10. That is, the entire main body 41 is recessed so as to protrude toward the light source unit 10. More specifically, the main body portion 41 has a substantially bowl shape formed by a smooth curved surface in which each of the outer surface and the inner surface is continuous, and is curved so that the center portion is closest to the light source unit 10.

  The main body 41 is curved so as to approach the inner surface of the reflecting portion 20. Specifically, the main body portion 41 is curved so as to exist at a position surrounded by the reflection portion 20 beyond the frame body portion 30 toward the light source portion 10 side. That is, the central part of the main body 41 is located inside the reflecting part 20. The main body 41 prevents the reflecting surface (inner surface) of the reflecting portion 20 from being exposed to the outside. That is, the reflection surface of the reflection unit 20 cannot be seen from the user.

  The extending portion 42 is a folded portion that is folded back from the end of the main body portion 41 toward the light source unit 10, and extends from the second opening portion 32 that is the light emitting side opening portion of the frame body portion 30 to the frame body portion 30. Is extended toward the light source section 10 side. In this way, by forming the extended portion 42 in a folded manner, the difference in height of the connecting portion between the translucent member 40 and the frame body portion 30 can be easily eliminated, and the end portion of the translucent member 40 and the frame body can be eliminated. The height position with the end of the portion 30 can be easily matched.

  In the present embodiment, the extending portion 42 is formed in a frame shape at the end of the translucent member 40 so as to contact the inner surface of the inner wall portion 33 of the frame body portion 30. The height of the extending portion 42 and the height of the inner wall portion 33 of the frame body portion 30 are substantially the same. Thereby, as shown in FIGS. 3 to 6, the frame body portion 30 is fitted into the extending portion 42 along the outer surface of the extending portion 42.

  As shown in FIGS. 2 and 3, the extending portion 42 is formed with a flange portion 43. Specifically, the flange portion 43 is formed so as to protrude outward from the end portion of the extending portion 42 on the light source portion 10 side. Further, the frame part 30 is placed on the collar part 43. Specifically, the end of the inner wall 33 of the frame body 30 on the light source unit 10 side is in contact with the flange 43.

  The collar portion 43 is supported by the instrument body 2. Thus, the translucent member 40 is fixed to the instrument main body 2 by the collar part 43 being supported by the instrument main body 2. In this Embodiment, the collar part 43 is supported by the reflection part 20 and the frame body part 30 by being clamped by the reflection part 20 and the frame body part 30 which comprise the instrument main body 2. FIG. As an example, the flange portion 43 is sandwiched between the flange portion 23 provided on the reflection portion 20 and the inner wall portion 33 of the frame body portion 30.

  In the present embodiment, the packing 50 is inserted between the flange portion 43 of the translucent member 40 and the flange portion 23 of the reflection portion 20, and not only the flange portion 43 but also the packing 50 includes the flange portion of the reflection portion 20. 23 and the inner wall portion 33 of the frame body portion 30. The surface of the flange part 43 and the flange part 23 on the packing 50 side is a flat surface.

  In addition, as described above, the reflecting portion 20 and the frame body portion 30 are fixed by the screw 100. However, as shown in FIGS. 4 to 6, the flange portion 43 is a screw in the reflecting portion 20 and the frame body portion 30. The part fixed by 100 is avoided. Specifically, the flange portion 43 is intermittently formed in a plurality of pieces along the outer periphery of the translucent member 40 so as to avoid the screw hole portion 36 of the frame body portion 30. In the present embodiment, six collar portions 43 are formed. Further, the height of the extended portion 42 only needs to be long enough to screw the screw 100 into the screw hole 36.

  Since the translucent member 40 (main body portion 41) configured in this way has translucency and light diffusibility, the light incident on the translucent member 40 is diffused within the translucent member 40 and within the translucent member 40. Is transmitted through the light transmitting member 40 and emitted. That is, since the translucent member 40 diffuses and guides light from the highly directional LED, the entire translucent member 40 (main body portion 41) functions as a light emitting unit that emits pseudo light.

  In the present embodiment, the entire translucent member 40 has translucency and diffusibility. However, if at least the main body 41 has translucency and diffusivity, the extended portion 42 is provided. And the collar part 43 does not need to have translucency and a diffusivity.

  In addition, the light transmissive member 40 having light diffusibility is not limited to the one in which the light diffusing material is dispersed inside, and a milky white light diffusing film including the light diffusing material or the like is formed on the surface (inner surface or outer surface) of the transparent member. Can also be realized. Also, instead of using a light diffusing material, light diffusibility can also be achieved by forming fine irregularities on the surface of the transparent member by applying a surface treatment such as embossing or printing a dot pattern on the surface of the transparent member. The translucent member 40 having can be realized. In these cases, a light diffusing material may be further added to the transparent member having an uneven surface or a dot pattern formed on the surface.

[Packing]
The packings 50 and 55 are annular members made of an elastic resin material such as an elastomer. In the present embodiment, the packings 50 and 55 are formed in a thin flat plate shape with silicone rubber.

  As shown in FIG. 3, the packing 50 is interposed between the translucent member 40 and the reflecting portion 20. Specifically, the packing 50 is interposed between the flange portion 43 of the translucent member 40 and the flange portion 23 of the reflecting portion 20, and is sandwiched between the flange portion 43 and the flange portion 23. Since the surface of the flange portion 43 and the flange portion 23 on the packing 50 side is a flat surface, the packing 50 and the flange portion 43 and the flange portion 23 are in surface contact.

  The packing 55 is interposed between the base 60 and the reflecting portion 20 and is sandwiched between the base 60 and the reflecting portion 20. Specifically, the packing 50 is interposed between the reflection part 20 side end of the base 60 and the back surface of the reflection part 20.

  By providing the packings 50 and 55, it is possible to suppress moisture or dust from entering through the gaps between the members, so that waterproofness and dustproofness can be improved. Moreover, it can suppress that the light from the light source part 10 leaks outside by providing packing 50 and 55. FIG.

[Base]
As shown in FIG. 3, the base 60 is an attachment base to which the light source unit 10 is attached. The base 60 also functions as a heat sink that radiates heat generated by the light source unit 10. Therefore, the base 60 may be formed of a metal material, for example, made of aluminum die casting. In the present embodiment, in order to improve heat dissipation, the base 60 is provided with a plurality of heat radiation fins. In the present embodiment, the base 60 is a part of the instrument body 2.

[Reflecting part (main reflector)]
The reflecting part 70 is a cylindrical reflector (reflecting plate). As shown in FIGS. 2 and 3, the incident opening 71 into which light from the light source part 10 enters and the light incident from the incident opening 71 are reflected. And an exit opening 72 for exiting. The incident opening 71 is formed so as to surround the light source unit 10. The size of the exit aperture 72 is larger than the size of the entrance aperture 71. The inner surface of the reflection unit 70 is a reflection surface that reflects light from the light source unit 10.

  In the present embodiment, the reflection unit 70 has a light distribution control function, and controls the light emitted from the light source unit 10 to be directed in a desired direction. That is, the reflection unit 70 functions as a main reflection plate (main reflection member) of the lighting fixture 1. The reflection unit 70 performs light distribution control so that, for example, light emitted from the light source unit 10 enters the translucent member 40.

  The reflecting unit 70 is formed of a resin material such as PBT, for example. Specifically, the reflection part 70 is formed of a hard white resin material. In addition, the reflection part 70 may be formed with metal materials, such as aluminum.

  The reflection part 70 configured in this way is fixed to the attachment member 81. Specifically, the reflecting portion 70 is fixed to the mounting member 81 by locking a notch portion formed in the reflecting portion 70 and a claw portion provided on the mounting member 81.

[Effects]
In the lighting fixture 1 in this Embodiment, since the translucent member 40 is arrange | positioned at the light emission side of the light source part 10 as a pseudo light source, the glare of illumination light and the illumination intensity irregularity in the lighting fixture 1 can be suppressed. .

  Furthermore, in the luminaire 1, the translucent member 40 has a frame body portion from the main body portion 41 on which the light reflected by the reflecting portion 20 is incident and the light emitting side opening portion (second opening portion 32) of the frame body portion 30. 30 and an extending portion 42 extending toward the light source portion 10 side along the inner surface. Further, the extended portion 42 is formed with a flange portion 43 supported by the instrument body 2.

  With this configuration, the translucent member 40 can be supported on the instrument body 2 by the extending portion 42 and the flange portion 43, so that light emitted from the second opening 32 of the frame body portion 30 can be transmitted through the translucent member 40. It is possible to avoid being blocked by the support structure. That is, it can avoid that the light emission area in the translucent member 40 reduces. Thereby, the opening diameter of the 2nd opening part 32 of the frame part 30 can be maximized, and the light emission area of the translucent member 40 can be maximized. As a result, it is possible to suppress a decrease in light extraction efficiency.

  Thus, according to the lighting fixture 1 in this Embodiment, the lighting fixture which can suppress the fall of the extraction efficiency of light can be implement | achieved, suppressing the glare of illumination light and illumination intensity nonuniformity.

  Moreover, in the lighting fixture 1 according to the present embodiment, the position of the translucent member 40 with respect to the opening surface of the second opening portion 32 of the frame body portion 30 is easily adjusted by appropriately adjusting the length of the extending portion 42. can do. Thereby, the design freedom of the lighting fixture 1 can be raised according to a user's needs.

  Moreover, in the lighting fixture 1 in this Embodiment, the collar part 43 of the translucent member 40 is clamped by the reflection part 20 and the frame body part 30. FIG.

  With this configuration, the translucent member 40 can be fixed by the reflecting portion 20 and the frame body portion 30, so that the translucent member 40 can be easily supported by the instrument body 2 with a simple structure.

  In addition, when the collar part 43 is clamped between the reflection part 20 and the frame body part 30, another member other than the collar part 43 may exist between the reflection part 20 and the frame body part 30. That is, the collar portion 43 is not limited to being directly sandwiched between the reflecting portion 20 and the frame body portion 30 and may be sandwiched indirectly. In this Embodiment, the collar part 43 is clamped indirectly. Specifically, the flange 43 is sandwiched between the reflector 20 and the frame body 30 in a state where the flange 43 and the packing 50 are inserted between the reflector 20 and the frame body 30.

  Moreover, in the lighting fixture 1 in this Embodiment, the reflection part 20 and the frame part 30 are being fixed with the screw 100, and the collar part 43 is being fixed with the screw 100 in the reflection part 20 and the frame part 30. It is formed to avoid the parts.

  With this configuration, when the reflecting portion 20 and the frame body portion 30 are fixed, it is not necessary to perform special processing such as providing a screw hole in the flange portion 43, so that the cost can be reduced.

  Moreover, in the lighting fixture 1 in this Embodiment, the surface by the side of the packing 50 of the collar part 43 of the translucent member 40 is a plane.

  With this configuration, the adhesion between the packing 50 and the flange 43 can be enhanced. Thereby, the waterproofness and dustproofness with respect to the light source part 10 can be improved. Further, light leakage of light emitted from the light source unit 10 can be suppressed.

  Moreover, in the lighting fixture 1 in this Embodiment, at least one part of the outer surface of the main-body part 41 of the translucent member 40 is curving toward the light source part 10 side.

  With this configuration, it is possible to make the user feel a three-dimensional feeling even though the illumination light irradiation area of the luminaire 1 is covered with the translucent member 40, and it is possible to realize a luminaire excellent in design.

(Modification of Embodiment 1)
FIG. 7 is a cross-sectional view of a lighting fixture 1A according to a modification of the first embodiment.

  As illustrated in FIG. 7, the lighting fixture 1A according to the present modification is different from the lighting fixture 1 according to the first embodiment in that the reflection portion 20A includes an extension portion 24.

  The extending part 24 is a part in which the emission opening 22 of the reflecting part 20 </ b> A extends toward the second opening 32 of the frame body part 30, and the frame extends along the inner surface of the extending part 42 of the translucent member 40. The body part 30 is formed so as to extend toward the second opening part 32 (opening part on the light emission side). That is, the extending part 24 is a wall part formed at a position corresponding to the extending part 42 of the translucent member 40.

  The extending portion 42 of the translucent member 40 is covered with the extending portion 24. Specifically, the inner surface of the extending portion 42 is covered only with the extending portion 24 of the reflecting portion 20A.

  As described above, in the lighting fixture 1 </ b> A according to this modification, the reflecting portion 20 </ b> A extends along the inner surface of the extending portion 42 of the translucent member 40 toward the second opening portion 32 of the frame body portion 30. The extending portion 42 is covered with the extending portion 24.

  With this configuration, it is possible to reduce unevenness in light generated in the translucent member 40 by the reflecting portion 20A and the frame body portion 30 (inner wall portion 33).

  That is, when there is a difference in reflectance between the inner surface of the reflecting portion 20A and the inner surface of the frame body portion 30 (inner wall portion 33), light unevenness occurs in the translucent member 40 due to this reflectance difference. In particular, when the main body portion 41 of the translucent member 40 is curved toward the light source portion 10, the main body portion 41 approaches the reflection portion 20 and the frame body portion 30 (inner wall portion 33). For this reason, the light nonuniformity which generate | occur | produces in the translucent member 40 by the reflectance difference of the reflection part 20 and the frame part 30 (inner wall part 33) becomes conspicuous.

  On the other hand, the reflective part 20A and the frame body part 30 can be covered with the extended part 24 by providing the extended part 24 in the reflective part 20A as in this modification. Thereby, it can reduce that the light nonuniformity generate | occur | produces in the translucent member 40 by the reflectance difference of 20 A of reflection parts and the frame part 30 (inner wall part 33).

(Embodiment 2)
Next, the lighting fixture 1B which concerns on Embodiment 2 is demonstrated using FIG. FIG. 8 is a cross-sectional view of the lighting fixture 1B according to the second embodiment.

  As shown in FIG. 8, the point in which the lighting fixture 1B in this Embodiment differs from the lighting fixture 1 in Embodiment 1 is the structure of the reflection part 20B and the packing 50B.

  In the present embodiment, the reflecting portion 20B further has an extending portion 24 with respect to the reflecting portion 20 of the first embodiment. The extension part 24 is a part in which the emission opening 22 of the reflection part 20 </ b> B extends toward the second opening 32 of the frame body part 30, similarly to the extension part 24 in the modification of the first embodiment. The light transmitting member 40 is formed so as to extend along the inner surface of the extending portion 42 toward the second opening portion 32 (opening portion on the light emitting side) of the frame body portion 30. The overall shape of the reflecting portion 20B is a funnel shape.

  Further, in the present embodiment, the packing 50 </ b> B is provided on the inner surface of the first packing part 51 interposed between the flange part 43 of the translucent member 40 and the reflecting part 20, and on the inner surface of the extending part 42 from the first packing part 51. And a second packing portion 52 extending along. That is, the extending part 42 of the translucent member 40 is covered with the second packing part 52 and the extending part 24 of the reflecting part 20.

  The surface of the second packing part 52 and the surface of the extending part 24 of the reflecting part 20 are flush with each other. In the present embodiment, the curvature of the surface of the second packing portion 52 and the curvature of the surface of the extending portion 24 are the same, and the surface of the second packing portion 52 and the surface of the extending portion 24 are continued. It is comprised so that one curved surface may be made.

  A part of the second packing part 52 is hidden between the extension part 24 of the reflection part 20 and the inner wall part 33 of the frame body part 30 and the other part is hidden by the extension part 24. Not exposed. The second packing part 52 and the extending part 24 of the reflecting part 20 may be the same color. That is, the surface of the exposed portion of the second packing portion 52 and the surface of the extending portion 24 are preferably the same color. Although the color of the extension part 24 of the 2nd packing part 52 and the reflection part 20 is white, for example, it is not restricted to this.

  As mentioned above, according to the lighting fixture 1B which concerns on this Embodiment, packing 50B is from the 1st packing part 51 interposed between the collar part 43 of the translucent member 40, and the reflection part 20, and the 1st packing part 51. And a second packing portion 52 extending along the inner surface of the extending portion 42 of the translucent member 40. Further, in the present embodiment, the extending portion 42 of the translucent member 40 is covered with the second packing portion 52 and the extending portion 24 of the reflecting portion 20.

  With this configuration, the extending portion 42 of the translucent member 40 is covered by the second packing portion 52, so that light is transmitted to the translucent member 40 by the difference in reflectance between the inner surfaces of the reflective portion 20 and the frame body portion 30 (inner wall portion 33). The occurrence of unevenness can be reduced.

  Furthermore, in the present embodiment, the surface of the second packing portion 52 and the surface of the extending portion 24 are flush with each other.

  With this configuration, it is possible to reduce light unevenness that occurs in the translucent member 40 by covering the inner wall portion 33 of the frame body portion 30 with the second packing portion 52 and the extending portion 24.

  Furthermore, in this Embodiment, the 2nd packing part 52 and the extension part 24 are the same color.

  With this configuration, the reflectance of the inner surface of the second packing portion 52 and the inner surface of the extension portion 24 can be made substantially the same, and the translucent member 40 can be obtained by the difference in reflectance between the second packing portion 52 and the extension portion 24. It is possible to reduce the occurrence of uneven light.

(Embodiment 3)
Next, a lighting fixture 1C according to Embodiment 3 will be described with reference to FIG. FIG. 9 is a cross-sectional view of a lighting fixture 1C according to the second embodiment.

  As shown in FIG. 9, the lighting device 1 </ b> C in the present embodiment is different from the lighting device 1 in the first embodiment in the configuration of the packing 50 </ b> C. In addition, the whole shape of the reflection part 20 is also different, and is substantially funnel shape in this Embodiment.

  In the present embodiment, the packing 50 </ b> C includes a first packing portion 51 interposed between the flange portion 43 of the translucent member 40 and the reflecting portion 20, and an extending portion 42 of the translucent member 40 from the first packing portion 51. And a second packing portion 52 extending along the inner surface of the reflecting portion 20. That is, the second packing part 52 is formed so as to cover a wide area of the extending part 42 and the reflecting part 20 from the inner surface of the extending part 42 of the translucent member 40 to the inner surface of the reflecting part 20. In the present embodiment, packing 50C is white.

  As described above, according to the lighting fixture 1 </ b> C according to the present embodiment, the second packing portion 52 is formed so as to cover the extending portion 42 and the reflecting portion 20 from the inner surface of the extending portion 42 to the inner surface of the reflecting portion 20. ing.

  With this configuration, it is possible to reduce the occurrence of light unevenness in the translucent member 40 due to the difference in reflectance between the inner surfaces of the reflecting portion 20 and the frame body portion 30 (inner wall portion 33).

(Other variations)
As mentioned above, although the lighting fixture which concerns on this invention was demonstrated based on Embodiment 1-3, this invention is not limited to these embodiment.

  For example, in each of the embodiments described above, the main body 41 of the translucent member 40 is curved. However, the present invention is not limited to this, and the main body 41 may be a flat flat panel that is not curved. Good.

  Further, in each of the above-described embodiments, the reflecting portion 20 that is the auxiliary reflecting plate and the reflecting portion 70 that is the main reflecting plate are separate components, but the present invention is not limited to this. Specifically, the auxiliary reflecting plate and the main reflecting plate may be one reflecting portion configured integrally.

  In each of the above embodiments, a light distribution control member for controlling the light distribution of the light source unit 10 may be disposed at a position on the light emission side of the light source unit 10. For example, a lens such as a convex lens may be disposed between the light source unit 10 and the translucent member 40 as such a light distribution control member. Further, the light distribution control member may be provided with a light distribution control function instead of separately providing the light distribution control member.

  Moreover, in each said embodiment, although the light source part 10 was comprised so that white light might be emitted by blue LED and yellow fluorescent substance, it is not restricted to this. For example, a phosphor-containing resin containing a red phosphor and a green phosphor may be used so that white light is emitted by combining this with a blue LED.

  Moreover, in each said embodiment, although blue LED was used as LED, it is not restricted to this. For example, as the LED, an LED that emits a color other than blue may be used. In this case, the phosphor may be appropriately selected according to the LED.

  In each of the above embodiments, the light source unit 10 (LED light source) has a COB structure in which an LED chip is directly mounted on a substrate. However, the present invention is not limited to this. For example, an LED module having an SMD (Surface Mount Device) structure may be used in place of the LED module having a COB structure. An LED module having an SMD structure is a package type LED element in which an LED chip (light emitting element) is mounted in a recess of a resin package (container) and a sealing member (phosphor-containing resin) is enclosed in the recess. One or a plurality of (SMD type LED elements) is mounted on a substrate.

  In each of the above embodiments, the LED is exemplified as the light emitting element. However, as the light emitting element, a semiconductor light emitting element such as a semiconductor laser or other solid light emitting element such as an organic EL (Electro Luminescence) or an inorganic EL. May be used.

  Moreover, the lighting fixture in each said embodiment may be installed in to-be-attached parts other than a ceiling. Moreover, this invention is applicable also to lighting fixtures other than a downlight.

  In addition, the embodiment can be realized by arbitrarily combining the components and functions in each embodiment without departing from the scope of the present invention, or a form obtained by subjecting each embodiment to various modifications conceived by those skilled in the art. Forms are also included in the present invention.

DESCRIPTION OF SYMBOLS 1, 1A, 1B, 1C Lighting fixture 2 Instrument main body 10 Light source part 20, 20A Reflection part 24 Extension part 30 Frame part 40 Translucent member 41 Main part 42 Extension part 43 Gutter part 50, 50C Packing 51 First packing Part 52 Second packing part 100 Screw

Claims (11)

A light source unit;
An instrument body having a reflection part for reflecting light from the light source part and a frame part for allowing light reflected by the reflection part to pass through;
A translucent member that transmits the light reflected by the reflecting portion;
The translucent member extends from the opening on the light emitting side of the frame body portion toward the light source portion side along the inner surface of the frame body portion from which the light reflected by the reflecting portion enters. An extended portion, and
The extending portion is formed with a collar portion supported by the fixture body. The lighting fixture according to claim 1, wherein the flange portion is sandwiched between the reflection portion and the frame body portion. The reflection portion and the frame body portion are fixed by screws,
The lighting fixture according to claim 2, wherein the flange portion is formed so as to avoid a portion fixed by the screw in the reflection portion and the frame body portion. Furthermore, a packing interposed between the flange part and the reflection part is provided,
The lighting fixture according to claim 2, wherein a surface of the flange portion on the packing portion side is a flat surface. The reflecting portion has an extending portion that extends toward the opening on the light emitting side of the frame body portion along the inner surface of the extending portion,
The lighting fixture according to claim 1, wherein the extending portion is covered with the extending portion. In addition, with packing,
The packing includes a first packing portion interposed between the flange portion and the reflecting portion, and a second packing portion extending from the first packing portion along the inner surface of the extending portion. Item 4. A lighting apparatus according to item 2 or 3. The reflecting portion has an extending portion that extends toward the opening on the light emitting side of the frame body portion along the inner surface of the extending portion,
The lighting fixture according to claim 6, wherein the extending portion is covered with the second packing portion and the extending portion. The lighting fixture according to claim 7, wherein a surface of the second packing part and a surface of the extension part are flush with each other. The lighting fixture according to claim 7 or 8, wherein the second packing part and the extension part have the same color. The lighting apparatus according to claim 6, wherein the second packing part is formed so as to cover the extension part and the reflection part from an inner surface of the extension part to an inner surface of the reflection part. The lighting fixture of any one of Claims 1-10 in which at least one part of the outer surface of the said main-body part is curving toward the said light source part side.

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