CN216521235U - Lighting apparatus and absorbing member - Google Patents

Abstract

The utility model provides a lighting fixture and an absorbing material, the lighting fixture can effectively inhibit light from being emitted to the outside under the condition of a required light distribution angle. The lighting fixture includes a light source, a reflective member, and a first absorption unit. The light source emits light. The reflecting member has an internal space and reflects light incident from the light source to the internal space. The first absorption unit absorbs a part of the light. The inner space has a first space and a second space. The second space is communicated with the first space. The first space is closer to the light source than the second space. The first absorption part is disposed in the first space.

Description

Lighting apparatus and absorbing member

Technical Field

The present invention relates to a lighting fixture and an absorbent member.

Background

The lighting device described in patent document 1 includes a planar light source, a reflector, and a sharpening member. The planar light source emits light. The reflecting member reflects light from the planar light source. The sharpening component is an optical control device and is inserted into the inner side of the reflecting piece. That is, the sharpening member adjusts the light distribution of the reflector.

[ patent document ]

Patent document 1: japanese patent No. 6416547

However, in the lighting apparatus described in patent document 1, the sharpening member is disposed in a space on a side away from the light source, out of the inner side of the reflector. That is, no sharpening member or spot reducing grating (a member for reducing the spot component of the light emitted from the planar light source) is disposed in the space on the side close to the light source in the inner side of the reflector. Therefore, light reflected by the inner surface of the reflector constituting the space on the side close to the light source may be diffused and emitted from the lighting fixture.

SUMMERY OF THE UTILITY MODEL

The present invention has been made in view of the above-described problems, and an object thereof is to provide a lighting device and an absorbing material that can effectively suppress light from being emitted to the outside under a condition of a desired light distribution angle.

The lighting apparatus disclosed in the present application includes a light source, a reflecting member, and an absorbing portion. The light source emits light. The reflecting member has an internal space, and reflects the light incident from the light source to the internal space. The absorption section absorbs a part of the light. The internal space has a first space and a second space communicating with the first space. The first space is closer to the light source than the second space. The absorbing portion is disposed in the first space.

In the lighting apparatus disclosed in the present application, it is preferable that the absorbing portion has a substantially ring shape along a circumferential direction corresponding to an optical axis of the light source.

In the light source module disclosed in the present application, it is preferable that the reflecting member extends along an optical axis of the light source. Preferably, the absorbing portion is disposed along an inner surface of an end portion of the reflecting member on a side close to the light source.

The absorbing material disclosed in the present application can be disposed in a lighting fixture, the lighting fixture including a reflecting member having an internal space and a light source. The absorber is disposed in a first space of the internal space, and absorbs a part of the light source. The reflecting member reflects the light incident into the internal space from the light source. The first space is communicated to a second space of the inner space, and the first space is closer to the light source than the second space.

According to the present invention, light can be effectively prevented from being emitted to the outside under a condition of a desired light distribution angle.

Drawings

Fig. 1 is a side view of a lighting fixture according to an embodiment of the present invention.

Fig. 2 is a bottom view of the lighting fixture according to the present embodiment.

Fig. 3 is a schematic view of an example of light emitted from the lighting fixture according to the present embodiment.

Fig. 4 is a schematic view of an example of light emitted from a lighting fixture according to a comparative example of the present invention.

Fig. 5 is a perspective view of the first absorption unit and the second absorption unit according to the present embodiment.

Fig. 6 is a cross-sectional view of the lighting fixture taken along line a-a of fig. 2.

Fig. 7 is a schematic view of another example of light emitted from the lighting fixture according to the present embodiment.

Description of the reference numerals

1: a lighting fixture;

100: a first absorbent part (absorbent part, absorbent member);

300: a light source;

400: a reflective member;

AN: an interior space;

a1: a first space;

a2: a second space;

LA: an optical axis.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals, and description thereof will not be repeated. In the present specification, for the convenience of understanding the present invention, the description is sometimes made with reference to the X direction, the Y direction, and the Z direction which are orthogonal to each other. For example, the X and Y directions are parallel to the horizontal direction, and the Z direction is parallel to the vertical direction. However, the X direction and the Y direction may be parallel to a direction other than the horizontal direction, and the Z direction may be parallel to a direction other than the vertical direction.

A lighting fixture 1 according to an embodiment of the present invention will be described with reference to fig. 1 and 2. Fig. 1 is a side view of a lighting fixture 1 according to the present embodiment. Fig. 2 is a bottom view of the lighting fixture 1 according to the present embodiment. The lighting fixture 1 is, for example, a down lamp, and can be mounted on a mounting surface C1 such as a ceiling. More specifically, the lighting fixture 1 can be fitted into and fixed to the fitting hole Ch formed in the mounting surface C1.

As shown in fig. 1 and 2, the lighting fixture 1 includes a lamp 10, a fixing frame 20, a mounting spring 30, a first absorbing part 100, a second absorbing part 200, a light source 300, and a reflecting member 400. The first absorbent part 100 is an example of an "absorbent part". Incidentally, the first absorbent portion 100 is an example of an "absorbent member". Hereinafter, for convenience of explanation, the vertical direction is defined by defining the side on which the bezel 20 is disposed with respect to the lamp 10 as "lower side" and the side on which the lamp 10 is disposed with respect to the bezel 20 as "upper side". That is, the up-down direction is parallel to the Z direction. Here, "upper" and "lower" correspond to "upper" and "lower" in a state where the lighting fixture 1 is attached to the attachment surface C1.

The lamp 10 includes a lamp body 11, a light leakage preventive portion 12, a heat radiating portion 13, and a shaft member 14. The luminaire 10 is mounted on the fixed frame 20, for example, in a rotatable manner. Specifically, the light leakage preventing part 12 of the lamp 10 is rotatably mounted on the fixing frame 20. The light leakage preventing portion 12 is rotatable in the rotation direction R1 with respect to the fixed frame 20, for example.

The lamp body 11 is a housing forming the body of the lighting fixture 1. Inside the lamp main body 11, a first absorption part 100, a second absorption part 200, a light source 300, and a reflection member 400 are disposed.

The lamp body 11 is rotatably attached to the light leakage preventing portion 12 through a shaft member 14, for example. That is, the lamp body 11 may be inclined with respect to the light leakage preventive portion 12. The lamp body 11 is inclined with respect to the light leakage preventing portion 12, for example, about the axial center of the shaft member 14. The shaft member 14 is, for example, a screw.

The light leakage preventing portion 12 prevents light from leaking out from between the lamp main body 11 and the fixing frame 20 when the lamp main body 11 is inclined with respect to the light leakage preventing portion 12. Specifically, when the light leakage preventing part 12 tilts the lamp main body 11 with respect to the light leakage preventing part 12, no gap is generated between the lamp main body 11 and the bezel 20. Alternatively, the light leakage preventing portion 12 minimizes a gap generated between the lamp main body 11 and the bezel 20 when the lamp main body 11 is inclined with respect to the light leakage preventing portion 12.

The heat dissipation portion 13 is for dissipating heat generated by the lamp body 11. The heat dissipation portion 13 includes, for example, a plurality of heat dissipation fins. The heat sink is used for dissipating heat. The heat dissipation portion 13 contains a material having high thermal conductivity. The heat dissipation portion 13 is made of metal, for example. Specifically, the heat dissipation portion 13 may be made of aluminum or an aluminum alloy, for example, in consideration of easiness of processing and molding and weight reduction of the lighting fixture 1.

The fixing frame 20 has an opening 20a at a bottom surface. The mounting spring 30 is fixed to the fixing frame 20. The mounting spring 30 mounts the fixing frame 20 to the mounting surface C1.

The light source 300 emits light. The light emitted from the light source 300 passes through the lamp body 11 and the bezel 20, and is emitted from the opening 20a of the bezel 20 to the outside of the lighting fixture 1. In the present embodiment, the light source 300 is, for example, a planar light source. In this embodiment, the light source 300 includes, for example, a substrate 301 and a light-emitting element 302.

The substrate 301 has, for example, an approximately rectangular shape. In this embodiment, the substrate 301 has a substantially flat plate shape, for example. On the substrate 301, wiring for supplying power to the light-emitting element 302 is formed.

The light emitting element 302 emits light. The Light Emitting element 302 is, for example, a Light Emitting Diode (LED). The number of the light-emitting elements 302 may be 1 or several. The light-emitting element 302 may include an organic EL (Electro-Luminescence) element or a laser diode. The light emitting element 302 is disposed on the substrate 301. Specifically, the light emitting element 302 is mounted on the mounting surface of the substrate 301. That is, the light emitting element 302 is mounted on the substrate 301.

The light source 300 may have a cob (chip on board) structure in which a plurality of light emitting elements 302 are placed on a mounting surface of a substrate 301 and sealed with a phosphor. Alternatively, the light source 300 may have an smd (surface Mount device) structure in which a unit in which the light emitting element 302 and the phosphor are integrated is placed on the mounting surface of the substrate 301 and electrically connected to the conductor of the substrate 301. Alternatively, the light source 300 may be constituted by a so-called shell-type light emitting element 302. When the light source 300 is formed of the shell-type light emitting element 302, the light source 300 may include the substrate 301 or may not include the substrate 301.

The reflecting member 400 is disposed below the light source 300. The reflecting member 400 has a substantially cylindrical shape. Specifically, the reflecting member 400 has a shape similar to a circular truncated cone in a side view. That is, the reflecting member 400 has a diameter that gradually increases as it is farther from the light source 300. In the present embodiment, the reflecting member 400 extends along the optical axis LA of the light source 300. In the present embodiment, the optical axis LA of the light source 300 is parallel to the Z direction and passes through the center of the light source 300.

The reflecting member 400 has AN inner space AN. The internal space AN has a first space a1 and a second space a2 communicating with the first space a 1. The first space a1 is closer to the light source 300 than the second space a 2. That is, the light emitted from the light source 300 passes through the first space a1 and then passes through the second space a 2.

The reflecting member 400 has an opening 401h and an opening 402 h. The opening 401h and the opening 402 are respectively located at both ends of the reflection member 400. In this embodiment, the opening 401h is closer to the light source 300 than the opening 402 h. In the present embodiment, the opening 401h is smaller than the opening 402 h.

The reflecting member 400 reflects light incident to the internal space AN from the light source 300. Specifically, the light emitted from the light source 300 enters the internal space AN of the reflecting member 400 through the opening 401h of the reflecting member 400. Then, the reflecting member 400 reflects light incident on the inner surface 400n of the reflecting member 400 among the light incident on the internal space AN. That is, light reflected by the inner surface 400n of the reflecting member 400 and direct light that is not reflected by the inner surface 400n exit from the opening 402 h. Then, the light emitted from the opening 402h passes through the opening 20a of the fixed frame 20 and is emitted to the outside of the lighting fixture 1.

In order to efficiently reflect the light emitted from the light source 300 on the inner surface 400n of the reflecting member 400, the inner surface 400n of the reflecting member 400 is preferably subjected to a reflective process such as white painting, silver painting, or a glossy metal plating. The material of the inner surface 400n of the reflective member 400 may have a color having high light reflectance such as white or silver.

The first absorber 100 is disposed in the first space a 1. The first absorption part 100 controls the characteristics of the light emitted from the light source 300. Specifically, the first absorption part 100 absorbs a part of the light emitted from the light source 300. More specifically, the first absorption part 100 absorbs a part of the light passing through the first space a 1. Therefore, the light can be effectively prevented from being emitted to the outside under the condition of the light distribution angle set in the lighting fixture 1. The light emitted to the outside under the condition of the light distribution angle set in the lighting fixture 1 is a so-called flare. First absorption portion 100 of the present embodiment will be described below by comparing it with a comparative example, with reference to fig. 3 and 4.

Fig. 3 is a schematic view showing an example of light emitted from the lighting fixture 1. Fig. 4 is a schematic view showing an example of light emitted from a lighting fixture 1z according to a comparative example of the present invention. The lighting fixture 1 according to the present embodiment includes the first absorption portion 100, and the lighting fixture 1z according to the comparative example does not include the first absorption portion. Both the lighting fixture 1 and the lighting fixture 1z emit light toward the irradiation surface C2. The irradiation surface C2 is, for example, a floor surface. In addition, in fig. 3 and 4, the lamp 10, the fixing frame 20, and the mounting spring 30 are omitted for the convenience of understanding the present invention. Note that, for convenience of drawing, the distance from the lighting fixture 1 to the irradiation surface C2 appears to be relatively short, but in practice, the distance from the lighting fixture 1 to the irradiation surface C2 may be longer or shorter. Similarly to the lighting fixture 1, the distance from the lighting fixture 1z to the irradiation surface C2 appears to be relatively short in the lighting fixture 1z, but in practice, the distance from the lighting fixture 1z to the irradiation surface C2 may be longer or shorter.

As shown in fig. 3, the first absorption part 100 absorbs a part of the light emitted from the light source 300. After the light source 300 emits light, the reflecting member 400 reflects the light that has entered the inner surface 400n of the reflecting member 400 without entering the first absorption part 100. An example of other light that does not enter the first absorption portion 100 and enters the inner surface 400n of the reflecting member 400 will be described later with reference to fig. 7.

On the other hand, as shown in fig. 4, in the lighting fixture 1z, the reflecting member 400 reflects the light emitted from the light source 300 and incident on the inner surface 400n of the reflecting member 400. In the lighting fixture 1z, the light reflected in the first space a1 is reflected again by the inner surface 400n, for example, and then exits from the lighting fixture 1 z.

By comparing the present embodiment with the comparative example, in the present embodiment, the spread of light emitted from the lighting fixture 1 is suppressed as compared with light emitted from the lighting fixture 1z of the comparative example. That is, according to the first absorption part 100, for example, a flare emitted from the lighting fixture 1 is suppressed. That is, the first absorption part 100 functions as, for example, a speckle reduction grating.

Further, by comparing the first embodiment with the comparative example, the light reflected by the first space a1 of the lighting fixture 1 of the present embodiment is emitted from the lighting fixture 1 so as to be suppressed from being diffused, compared with the light reflected by the first space a1 of the lighting fixture 1z of the comparative example. As a result, the light emitted from the lighting fixture 1 can be prevented from being diffused too much. That is, the light distribution range of the lighting fixture 1 of the present embodiment is narrower than the light distribution range of the lighting fixture 1z of the comparative example.

Next, referring back to fig. 1, the second absorption portion 200 will be described. In the present embodiment, the second absorption portion 200 is disposed in the second space a 2. The second absorption part 200 controls the characteristics of the light emitted from the light source 300. Specifically, the second absorption part 200 absorbs a part of the light emitted from the light source 300. More specifically, the second absorption part 200 absorbs a part of the light passing through the second space a 2. The second absorbing portion 200 is an optional component of the lighting fixture 1, for example, and is detachable from the lamp body 11. The second absorption portion 200 functions as a flare reduction grating, for example. That is, the second absorption portion 200 suppresses, for example, flare.

Next, the first absorption part 100 and the second absorption part 200 will be described with reference to fig. 1 and 5. Fig. 5 is a perspective view of the first absorbent part 100 and the second absorbent part 200. Specifically, fig. 5 shows the first absorption part 100 and the second absorption part 200 as viewed from obliquely above. In addition, in order to facilitate understanding of the present invention, fig. 5 shows an optical axis LA of the light source 300 in a case where the first absorption part 100 and the second absorption part 200 are arranged in the lighting fixture 1. As shown in fig. 5, in the present embodiment, the first absorption part 100 and the second absorption part 200 are separate members.

The first absorption portion 100 is, for example, a hollow member having a substantially truncated cone shape. The first absorber 100 has a substantially ring shape along the circumferential direction R3 corresponding to the optical axis LA of the light source 300. Specifically, the first absorption part 100 has a substantially circular ring shape. Therefore, in at least a part of the first space a1 of the reflection member 400, the light emitted from the light source 300 is absorbed throughout one full circumference. As a result, the diffusion of light emitted from the lighting fixture 1 can be effectively suppressed, as compared with the case where the first absorption part 100 does not have a substantially ring shape.

First absorbing part 100 is preferably colored to easily absorb light. Specifically, for example, the first absorption part 100 is formed of a black material. Further, first absorption portion 100 may be coated with, for example, a black paint (specifically, a matte black paint). The first absorption part 100 is made of, for example, resin.

The second absorption part 200 includes a cylinder part 210, a protrusion part 220, a ring part 230, and a connection part 240. In the present embodiment, the second absorption portion 200 includes a plurality of connection portions 240. Specifically, the second absorbent portion 200 includes 3 connecting portions 240. In the present embodiment, the cylindrical portion 210, the protruding portion 220, the annular portion 230, and the connecting portion 240 are integrally molded. However, the cylinder portion 210, the protruding portion 220, the annular portion 230, and the connecting portion 240 may be separate members.

In a state where the second absorbing portion 200 is disposed in the lighting fixture 1, the tube portion 210 extends along the optical axis LA. In the state where the second absorbing portion 200 is disposed in the lighting fixture 1, the protruding portion 220 protrudes from the end portion 210a of the tube portion 210 on the side closer to the light source 300. In a state where the second absorbing portion 200 is disposed in the lighting fixture 1, the protruding portion 220 has a substantially annular shape along the circumferential direction R3. Specifically, the protrusion 220 has an approximately circular ring shape.

The annular portion 230 is annular. In the present embodiment, the annular portion 230 has a substantially annular shape. The connecting portion 240 connects the cylindrical portion 210 and the annular portion 230.

The second absorption part 200 preferably has a color that easily absorbs light. Specifically, for example, the second absorption part 200 is formed of a black material. The second absorption portion 200 may be painted black (specifically, matte black paint, etc.), for example.

Next, the lighting fixture 1 of the present embodiment will be further described with reference to fig. 5 and 6. Fig. 6 is a sectional view of the lighting fixture 1 along the line a-a of fig. 2.

As shown in fig. 6, side surface 100a of first absorber 100 is along inner surface 400n of reflecting member 400. That is, the side surface 100a faces the inner surface 400n in a direction intersecting the optical axis LA. Specifically, the side surface 100a faces the inner surface 400n in a radial direction RD of the optical axis LA.

First absorber 100 is disposed along inner surface 400an of end 400a of reflecting member 400 on the side closer to light emitting element 302. Specifically, side surface 100a of first absorber 100 is arranged along inner surface 400an of reflecting member 400. Therefore, light with a small incident angle can be prevented from being reflected by the reflecting member 400. As a result, light can be effectively prevented from being emitted to the outside under the condition of a desired light distribution angle. That is, it is possible to effectively suppress the light emitted from the lighting fixture 1 from being excessively diffused. In addition, the inner surface 400an constitutes an inner surface 400n of the reflecting member 400. The incident angle of light is an angle formed by the direction of light incidence and the normal line of the surface on which light is incident.

In the present embodiment, the first absorber 100 is bonded to the inner surface 400n of the reflective member 400 with an adhesive, for example. However, the first absorption part 100 may be fixed to the reflection member 400 by a fastening member such as a screw. The first absorption part 100 may be disposed in the first space a1 by the elastic force of the first absorption part 100. In this case, the first absorption part 100 has elasticity, for example. The diameter of the first absorption part 100 is larger than the diameter of the area of the inner surface 400n of the reflection member 400 constituting the first space a 1. As a result, the first absorbing part 100 is pressed against the inner surface 400n of the reflecting member 400 by the elastic force of the expansion of the first absorbing part 100 itself, and the first absorbing part 100 is disposed in the first space a 1.

In the present embodiment, the lighting fixture 1 is optically designed so that the light emitted from the reflecting member 400 is blocked by the fixing frame 20 as little as possible. For example, the inner surface 400n of the reflective member 400 and/or the position of the light source 300 are designed. Specifically, for example, the degree of curvature of the inner surface 400n is designed.

The lighting fixture 1 further comprises a support portion 250. The supporting portion 250 supports the reflecting member 400. The support portion 250 is, for example, an elastic body. Specifically, the support portion 250 is, for example, a spring having a circular arc shape (specifically, a major arc shape). The outer diameter of the support portion 250 is larger than the inner diameter of the lamp body 11. Therefore, the support portion 250 is pressed against the inner surface of the lamp main body 11 by the elastic force of the expansion of the support portion 250 itself, whereby the support portion 250 is engaged with the lamp main body 11.

In the present embodiment, the second absorption portion 200 is attached to the support portion 250. Specifically, the annular portion 230 of the second absorption portion 200 is attached to the support portion 250. For example, the second absorption part 200 is bonded to the support part 250 by an adhesive. More specifically, the ring-shaped portion 230 of the second absorption part 200 is bonded to the support part 250 by an adhesive.

The fixing frame 20 includes a reflecting member 21 and a frame base 22. The reflecting member 21 is disposed inside the frame base 22. The reflecting member 21 is attachable to and detachable from the frame base 22, for example. Part of the light that has passed through the lamp main body 11 and entered the fixed frame 20 is reflected by the reflecting member 21, and is emitted from the opening 20a of the fixed frame 20 to the outside of the lighting fixture 1. Hereinafter, light entering the fixing frame 20 through the lamp main body 11 will be described with reference to fig. 7.

Fig. 7 is a schematic view of another example of light emitted from the lighting fixture 1. In fig. 7, the lamp 10, the frame base 22 of the fixed frame 20, and the attachment spring 30 are omitted for the convenience of understanding the present invention. Note that, for convenience of drawing, the distance from the lighting fixture 1 to the irradiation surface C2 appears to be relatively short, but in practice, the distance from the lighting fixture 1 to the irradiation surface C2 may be longer or shorter.

As shown in fig. 7, of the light beams reflected by the inner surface 400n of the reflecting member 400, for example, light beams that are reflected at positions facing each other in the radial direction RD of the optical axis LA with the optical axis LA therebetween intersect. Specifically, for example, among the light beams reflected by the inner surface 400n of the reflecting member 400, the light beams reflected at positions facing each other in the radial direction RD of the optical axis LA with the optical axis LA therebetween intersect each other inside the reflecting member 21. Of the light beams reflected by the inner surface 400n of the reflecting member 400, the light beams reflected at positions facing each other in the radial direction RD of the optical axis LA with the optical axis LA therebetween may intersect below the reflecting member 21. The light beams that intersect may intersect on the optical axis LA, or may intersect at a position different from the optical axis LA.

In the present embodiment, the fixing frame 20 has an opening 20b (see fig. 6) in the top surface. Since the diameter of the opening 20b is smaller than the diameter of the opening 20a, light emitted from the reflecting member 400 may be blocked in the vicinity of the opening 20 b. However, according to the present embodiment, since the light reflected by the inner surface 400n of the reflecting member 400 intersects, for example, the inside of the reflecting member 21 or the lower side of the reflecting member 21, it is possible to reduce the possibility that the light reflected by the inner surface 400n is blocked in the vicinity of the opening 20 b. That is, a decrease in the light emission efficiency of the lighting fixture 1 can be suppressed.

As described above with reference to fig. 6, the lighting fixture 1 is designed optically so that the light emitted from the reflecting member 400 is blocked by the fixing frame 20 as little as possible. Specifically, for example, as shown in fig. 7, light reflected by the inner surface 400n of the reflecting member 400 is emitted from the lighting fixture 1 without being blocked by the fixing frame 20. In addition, in the case where the lighting apparatus does not include the first absorption portion, the light reflected in the vicinity of the upper end portion of the reflection member is diffused and emitted from the reflection member, and therefore, there is a high possibility that the light is blocked by the fixing frame. That is, in the case where the lighting fixture does not include the first absorption portion, the amount of light emitted from the fixed frame may decrease, and the light emission efficiency of the lighting fixture may decrease.

As described above, the embodiments of the present invention are explained with reference to the drawings. However, the present invention is not limited to the above-described embodiment and modification, and may be implemented in various ways within a range not departing from the gist thereof. For the convenience of understanding the present invention, the drawings mainly schematically show the respective constituent elements, and for the convenience of drawing, D, length, number, and the like of the respective constituent elements may be different from those of the actual drawings. The shapes, dimensions, and the like of the components shown in the above embodiments are merely examples, and are not particularly limited, and various modifications may be made without substantially departing from the effects of the present invention.

(1) As described with reference to fig. 5, in the present embodiment, the first absorption portion 100 is a hollow member having a substantially circular truncated cone shape. However, the embodiment of the first absorption part 100 is not particularly limited as long as the first absorption part 100 can be disposed in the first space a1 of the reflective member 400. For example, the first absorption part 100 may be a painted area or a belt formed on the inner surface 400n of the reflective member 400. The painted areas or ribbons have, for example, a color that readily absorbs light. Specifically, the painted area or the belt may be painted black (specifically, matte black paint or the like).

(2) As described with reference to fig. 6, the second absorption portion 200 is bonded to the support portion 250 with an adhesive. However, the second absorption part 200 may include a magnet, and the second absorption part 200 and the support part 250 may be connected by a magnetic force of the magnet. The second absorbing portion 200 may be fixed to the reflecting member 400 by a fastener such as a screw. In this case, the lighting fixture 1 may not include the support portion 250.

(3) As described with reference to fig. 1, the first absorption part 100 is disposed in the first space a 1. However, the length of the first absorber 100 in the direction along the optical axis LA is not particularly limited as long as the first absorber 100 can be disposed in the first space a 1. For example, a part of first absorber 100 may be disposed in first space a1, and another part of first absorber 100 may be disposed in second space a 2. A part of the first absorber 100 may be disposed in the first space a1, and another part of the first absorber 100 may be disposed in a space closer to the light source 300 than the first space a 1. By adjusting the length of the first absorption portion 100 in the direction along the optical axis LA, the degree of diffusion of the light emitted from the lighting fixture 1 can be adjusted. That is, the light distribution range of the lighting fixture 1 can be adjusted.

(4) As described with reference to fig. 5, the first absorber 100 has a substantially ring shape along the circumferential direction R3 corresponding to the optical axis LA of the light source 300. However, as long as the first absorption part 100 can be disposed in the first space a1, the first absorption part 100 may be a substantially ring shape having no continuous end points or may be an annular shape having a partial notch.

(5) As described with reference to fig. 6, the first absorber 100 is disposed along the inner surface 400an of the reflective member 400. However, as long as the first absorption portion 100 can be arranged in the first space a1, the first absorption portion 100 may be arranged at a position not in close proximity to the end portion 400 a.

(6) As described with reference to fig. 5, in the present embodiment, the annular portion 230 has a substantially annular shape. However, the shape of the annular portion 230 is not particularly limited. For example, the annular portion 230 may have a shape similar to a polygonal ring. For example, the annular portion 230 may have a shape of a substantially rectangular ring.

(7) As described with reference to fig. 5, the ring-shaped portion 230 of the second absorption portion 200 is attached to the support portion 250. However, the tip of the connecting portion 240 may be attached to the support portion 250. Specifically, for example, the tip of the connection portion 240 may be bonded to the support portion 250. In this case, the second absorption portion 200 may or may not include the annular portion 230.

(8) As described with reference to fig. 5, in the present embodiment, the connection portion 240 includes 3 connection portions 240. However, the number of the connecting portions 240 may be 1 as long as the connecting portions 240 connect the cylindrical portion 210 and the annular portion 230. The number of the connection portions 240 may be 2 or 4 or more.

[ industrial availability ]

The present invention can be used in the technical fields of lighting fixtures and absorbent members, and has industrial applicability.

Claims (4)

1. A lighting device is characterized by comprising:

a light source that emits light;

a reflecting member having an internal space that reflects the light incident from the light source to the internal space; and

an absorption portion that absorbs a part of the light,

the inner space has a first space and a second space communicating with the first space,

the first space is closer to the light source than the second space,

the absorbing portion is disposed in the first space.

2. The lighting apparatus according to claim 1,

the absorption portion has an approximate ring shape along a circumferential direction corresponding to an optical axis of the light source.

3. The lighting apparatus according to claim 1 or 2,

the reflective member extends along an optical axis of the light source,

the absorbing portion is disposed along an inner surface of an end portion of the reflecting member on a side close to the light source.

4. An absorbing material that can be disposed in a lighting fixture, the lighting fixture comprising a reflecting member and a light source, the reflecting member having an internal space,

the absorber is disposed in a first space of the internal space, the absorber absorbing a part of light of the light source,

the reflecting member reflects the light incident into the internal space from the light source,

the first space is communicated to a second space of the inner space, and the first space is closer to the light source than the second space.

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