JP2023126605A - Lighting fixture - Google Patents

Abstract

To provide a light source unit capable of reducing light-emitting unevenness generated in a light cover portion, and a lighting fixture.SOLUTION: A light source unit U2 can be attached/detached to/from a base member 11 attached to an attaching body. The light source unit U2 is equipped with a light source 22, and a light cover portion 80. The light source 22 emits light. Light emitted by the light source 22 transmits the light cover portion 80. The light source 22 opposes to the inside D of the light cover portion 80, and is disposed outside the light cover portion 80. While the light source unit U2 is installed to the base member 11, the light source 22 is preferably disposed inside the base member 11.SELECTED DRAWING: Figure 3

Description

The present invention relates to a light source unit and a lighting fixture.

The lighting device 100 described in Patent Document 1 will be described with reference to FIGS. 8(a) to 8(c). FIG. 8A is a schematic diagram of the lighting device 100. FIG. 8(b) is a diagram of the diffusion cover 110 shown in FIG. 8(a) viewed from the W1 direction. FIG. 8(c) is a diagram of the diffusion cover 110 shown in FIG. 8(a) viewed from the W2 direction. As shown in FIG. 8A, the lighting device 100 includes a diffusion cover 110, a reflector 120, and an LED 130. An LED 130 is arranged inside the diffusion cover 110. A power supply section is arranged inside the reflection plate 120. Diffusion cover 110 is removable from reflector 120 . The diffusion cover 110 transmits and emits the light L emitted by the LED 130.

Japanese Patent Application Publication No. 2015-002161

However, as shown in FIGS. 8A and 8B, for example, the light L emitted from the LED 130 travels while spreading from the LED 130 at an angle of approximately 120 degrees. Therefore, if the LED 130 is arranged inside the diffusion cover 110, there is a possibility that the light L emitted from the LED 130 will be difficult to reach the upper side of the diffusion cover 110. This is because the distance between the LED 130 and the diffusion cover 110 is short, and the light emitted from the LED 130 reaches the diffusion cover 110 before being sufficiently spread. In this case, the amount of light L transmitted through the upper part of the diffusion cover 110 is reduced. Therefore, a dark area Z1 is generated above the diffusion cover 110. The dark area Z1 is a darker area than the area of the diffusion cover 110 where the light L sufficiently reaches (the bright area Z2). Therefore, the occurrence of the dark area Z1 causes uneven light emission in the upper part of the diffusion cover 110. The uneven light emission is the occurrence of a contrast between a dark area Z1 and a bright area Z2 on the outer surface of the diffusion cover 110.

Further, as shown in FIGS. 8A and 8C, when the distance V between the LED 130 and the lower part of the diffusion cover 110 is short, a dark area Z3 occurs in the lower part of the diffusion cover 110. Specifically, when the diffusion cover 110 is viewed from the W2 direction (downward), a dark portion Z3 occurs in a portion of the diffusion cover 110 located between adjacent LEDs 130. The dark area Z3 occurs for the following reasons. Generally, when the LED 130 emits light downward, the area directly below the LED 130 is darker than the area directly below the LED 130. In other words, the area directly below the LED 130 is the brightest. Further, since the illuminance directly below the LED is inversely proportional to the distance from the LED to the irradiation surface, the difference between the brightness directly below the LED 130 and the surrounding brightness directly below the LED 130 becomes larger as the location is closer to the LED 130 in the optical axis direction. Therefore, if the distance V between the LED 130 and the lower part of the diffusion cover 110 is short, the difference between the brightness directly below the LED 130 and the surrounding brightness directly below the LED 130 becomes large, and a dark area Z3 occurs in the lower part of the diffusion cover 110. As a result, uneven light emission occurs in the lower part of the diffusion cover 110.

If uneven light emission occurs in the diffusion cover 110, the aesthetic appearance of the diffusion cover 110 in the light emission state may be impaired. Particularly, in places where the diffusion cover 110 is frequently seen by the public (for example, a product section in a store or a living room in a residence), there is a desire to install a lighting fixture with a beautiful appearance and reduced uneven light emission. Reducing uneven light emission means bringing the brightness of the dark area Z1 closer to the brightness of the bright area Z2 and/or reducing the area occupied by the dark area Z1 on the outer surface of the diffusion cover (light cover part) 110. .

The present invention has been made in view of the above problems, and an object of the present invention is to provide a light source unit and a lighting fixture that can reduce uneven light emission that occurs in a light cover portion.

The lighting fixture disclosed in this application includes a base member attached to a mounting body, and a light source unit detachable from the base member. The light source unit includes a light source that emits light, a light cover portion that transmits the light, a mounting member on which the light source is mounted, and a holding member that holds the mounting member. The light source faces inside the light cover part. The optical cover section includes a first cover section, a second cover section facing the first cover section, and a space between the first cover section and the second cover section between the first cover section and the second cover section. and a third cover part with a cover part interposed therebetween. The base member includes a first base portion, a second base portion facing the first base portion, and a portion between the first base portion and the second base portion that is connected to the first base portion and the second base portion. and a third base part interposed therebetween. Inside the optical cover part, there is a cavity surrounded by the first cover part, the second cover part, and the third cover part of the optical cover part. Each of the first cover part, the second cover part, and the third cover part of the light cover part faces the light source via the cavity. The first cover part and the second cover part have a substantially flat plate shape. The first base portion and the second base portion have a substantially flat plate shape. The holding member is formed with a holding body having a U-shape in cross section and having a shape along at least one of both ends of the mounting member in the transverse direction. The holder has a side portion that faces the side surface of the mounting member in the transverse direction, and an overlapping portion that overlaps the end portion of the mounting member in the transverse direction along the attachment/detachment direction. The attaching and detaching direction is a direction in which the light source unit is attached to and detached from the base member.

In the lighting fixture disclosed in the present application, the light source unit may have an entrance part connected to the light cover part. The entry portion may be arranged inside the base member.

In the lighting fixture disclosed in this application, the first cover part and the second cover part may be arranged substantially parallel to each other. The first base part and the second base part may be arranged substantially parallel to each other.

In the lighting fixture disclosed in the present application, an outer surface of the first cover portion and an outer surface of the first base portion may be arranged substantially flush with each other. The outer surface of the second cover part and the outer surface of the second base part may be arranged substantially flush.
In the lighting fixture disclosed in the present application, in a state where the base member is attached to the mounting body, the base member and the light cover section are arranged side by side in the vertical direction, and the length of the light cover section in the vertical direction is may be approximately equal to the vertical length of the base member.
In the lighting fixture disclosed in this application, the base member and the light cover portion may extend along the first direction. The length of the optical cover portion in the second direction may be approximately equal to the length of the base member in the second direction. The second direction may be a direction perpendicular to the attachment/detachment direction and the first direction.
In the lighting fixture disclosed in this application, the holding member may hold the entrance portion.
In the lighting fixture disclosed in this application, the entrance portion may include a first entrance body and a second entrance body that are spaced apart from each other. The first entry body may be connected to the first cover portion and may have a first tip portion. The second entry body may be connected to the second cover part and have a second tip. The holding member may include a first holding body into which the first tip portion is fitted, and a second holding body into which the second tip portion is fitted. The first entering body, the second entering body, the first holding body, and the second holding body may extend along the first direction. The first holding body may be arranged to sandwich the first tip of the first entering body in a second direction. The second holding body may be arranged to sandwich the second tip of the second entering body in the second direction. The second direction may be a direction perpendicular to the attachment/detachment direction and the first direction.

According to the present invention, it is possible to reduce uneven light emission that occurs in the light cover portion.

FIG. 1 is a perspective view showing a lighting fixture according to an embodiment of the present invention. FIG. 2 is an exploded perspective view showing a lighting fixture. A cross-sectional view of a lighting fixture. FIG. 3 is a cross-sectional view of the cover member. FIG. 3 is an exploded perspective view showing the mounting member. A sectional view showing a holding member. FIG. 1 is a cross-sectional view showing a part of the lighting fixture 1. FIG. (a) Schematic diagram showing a general lighting equipment, (b) A diagram of the diffusion cover shown in Fig. 8(a) seen from the W1 direction, (c) A diagram of the diffusion cover shown in Fig. 8(a) seen from the W2 direction. Figure.

Embodiments of the present invention will be described below with reference to the drawings. In addition, in the drawings, the same reference numerals are given to the same or corresponding parts, and the description will not be repeated.

The lighting fixture 1 will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view showing a lighting fixture 1. FIG. FIG. 2 is an exploded perspective view showing the lighting fixture 1.

As shown in FIGS. 1 and 2, the lighting fixture 1 is, for example, a direct lighting device. The lighting fixture 1 emits light. The lighting fixture 1 extends along the first direction P. The first direction P indicates the longitudinal direction of the lighting fixture 1. Specifically, the lighting fixture 1 includes a base unit U1 and a light source unit U2.

The base unit U1 includes a base member 11, a first closing member 12, and a power supply section 13.

The base member 11 is made of metal, for example, in consideration of the heat dissipation of the power supply section 13 and the light source unit U2. The base member 11 extends along the first direction P. The base member 11 has a first base portion 11a, a second base portion 11b, and a third base portion 11c. The first base portion 11a, the second base portion 11b, and the third base portion 11c each have, for example, a substantially flat plate shape. The first base portion 11a and the second base portion 11b are opposed to each other along the second direction Q with an interval between them. The second direction Q is a direction perpendicular to the first direction P. A third base portion 11c is interposed between the first base portion 11a and the second base portion 11b.

The base member 11 is a member for installing the light source unit U2 on a mounting body. The mounting body is a member capable of supporting the lighting fixture 1, such as a ceiling surface of a room in a building. The base member 11 is attached to a mounting body. In this embodiment, the third base portion 11c of the base member 11 is attached to the attachment body.

The first closing member 12 is arranged at the end of the base member 11 in the first direction P. The first closing member 12 closes the end of the base member 11 in the first direction P. In this embodiment, the first closing member 12 is attachable to and detachable from the base member 11. A pair of first closing members 12 are provided. The pair of first closing members 12 each have, for example, a substantially flat plate shape and a substantially rectangular shape in plan view. One of the pair of first closing members 12 is disposed at an end of the base member 11 on one side P1 in the first direction P, and closes the one end of the base member 11. The other one of the pair of first closing members 12 is disposed at the end of the base member 11 on the other side P2 in the first direction P, and closes the other end of the base member 11. The pair of first closing member 12 and base member 11 may be separate members or may be integrally molded.

The interior C of the base member 11 is hollow. The interior C of the base member 11 is a space surrounded by the inner surface of the base member 11. Specifically, the interior C of the base member 11 is a space sandwiched between the first base part 11a and the second base part 11b.

A direction that is perpendicular to the first direction P and perpendicular to the second direction Q is referred to as a third direction R.

One side P1 of the interior C of the base member 11 in the first direction P is closed by one of the pair of first closing members 12. The other side P2 of the interior C of the base member 11 in the first direction P is closed by the other one of the pair of first closing members 12. One side Q1 of the interior C of the base member 11 in the second direction Q is closed by the first base portion 11a. The other side Q2 of the interior C of the base member 11 in the second direction Q is closed by the second base portion 11b. One side R1 of the interior C of the base member 11 in the third direction R is closed by the third base portion 11c. The other side R2 of the interior C of the base member 11 in the third direction R is open. As a result, the other side R2 of the inside C of the base member 11 in the third direction R communicates with the outside of the base member 11. The outside of the base member 11 indicates a space located outside the interior C of the base member 11.

The power supply section 13 supplies power to the light source unit U2. The power supply section 13 is arranged inside the base member 11. Note that the power supply section 13 may not be arranged inside the base member 11, but may be arranged outside the base member 11.

The light source unit U2 extends along the first direction P. Specifically, the light source unit U2 includes a light emitting module 20, a cover member 30, a second closing member 40, a holding member 50, a mounting member 60, and a mounting member 70.

The light source unit U2 is detachable from the base member 11. That is, the light source unit U2 is separate from the base member 11 and has a configuration that allows it to be attached to and detached from the base member 11. In this embodiment, the light source unit U2 is configured to be detachable from the base member 11 using the attachment member 60.

The light emitting module 20 emits light. The light emitting module 20 is, for example, an LED (Light Emitting Diode) module. The light emitting module 20 extends along the first direction P. Specifically, the light emitting module 20 includes a mounting member 21 and one or more light sources 22. The mounting member 21 is, for example, a substrate. The mounting member 21 has, for example, a substantially flat plate shape. The mounting member 21 extends along the first direction P. One or more light sources 22 are mounted on the mounting member 21 . In this embodiment, a plurality of light sources 22 are mounted on the mounting member 21. In this embodiment, the plurality of light sources 22 are arranged in a line along the first direction P. Each of the plurality of light sources 22 emits light. Each of the plurality of light sources 22 is, for example, a light emitting element such as an LED. Specifically, each of the plurality of light sources 22 is, for example, an SMD (surface mount device) element. The light source 22 made of SMD is formed, for example, into a substantially rectangular parallelepiped, and light is emitted from one surface (the surface behind the surface facing the mounting member 21) among six surrounding surfaces. In this embodiment, the surface facing the mounting member 21 is the light source mounting surface 22b (FIG. 3). Further, in this embodiment, the surface on the back side of the surface facing the mounting member 21 is the light emitting surface 22a (FIG. 3). Note that each of the plurality of light sources 22 may be a COB (chip on board) element.

The holding member 50 holds the mounting member 21. The holding member 50 has a substantially elongated shape. The holding member 50 extends along the first direction P. That is, the first direction P indicates the longitudinal direction of the holding member 50. The holding member 50 is, for example, made of metal (for example, aluminum).

The cover member 30 has an optical cover part 80 and an entrance part 90.

The light cover section 80 transmits the light emitted by the plurality of light sources 22. The light cover section 80, for example, diffuses the light emitted from the plurality of light sources 22.

The light cover part 80 is made of synthetic resin, for example. The light cover portion 80 may be, for example, white and semi-transparent. The light cover portion 80 may be formed, for example, by molding a resin containing a light-diffusing material, or may be formed by molding a transparent material and then subjecting the surface to a light-diffusion treatment.

The optical cover section 80 extends along the first direction P. The optical cover section 80 includes a first cover section 80a, a second cover section 80b, and a third cover section 80c. The first cover part 80a, the second cover part 80b, and the third cover part 80c each have, for example, a substantially flat plate shape. The first cover part 80a and the second cover part 80b are opposed to each other along the second direction Q with a gap between them. A third cover part 80c is interposed between the first cover part 80a and the second cover part 80b.

The interior D of the optical cover part 80 is hollow. The interior D of the optical cover part 80 is a space surrounded by the inner surface of the optical cover part 80. Specifically, the interior D of the optical cover section 80 is a space sandwiched between the first cover section 80a and the second cover section 80b.

The light cover section 80 transmits the light emitted by the plurality of light sources 22 and emits the light to the outside of the light cover section 80 . The outside of the optical cover part 80 indicates the space located outside the interior D of the optical cover part 80.

The entrance section 90 is connected to the optical cover section 80 . The entrance portion 90 extends along the first direction P. The entry portion 90 can enter the interior C of the base member 11.

The second closing member 40 is arranged at the end of the optical cover section 80 in the first direction P. The second closing member 40 closes the end of the optical cover section 80 in the first direction P. In this embodiment, the second closing member 40 is attachable to and detachable from the optical cover part 80. A pair of second closing members 40 are provided. The pair of second closing members 40 each have, for example, a substantially flat plate shape and a substantially rectangular shape in plan view. For example, the pair of second closing members 40 are each joined to the optical cover part 80 by welding. Note that the pair of second closing members 40 may each be joined to the optical cover portion 80 with an adhesive. One of the pair of second closing members 40 is disposed at the end of the optical cover section 80 on one side P1 in the first direction P, and closes the end section of the optical cover section 80 on the one side P1. The other one of the pair of first closing members 12 is disposed at the end of the base member 11 on the other side P2 in the first direction P, and closes the other end of the base member 11. The pair of second closing member 40 and base member 11 may be separate members or may be integrally molded.

One side P1 in the first direction P of the interior D of the optical cover part 80 is closed by one of the pair of second closing members 40. The other side P2 of the interior D of the optical cover part 80 in the first direction P is closed by the other one of the pair of second closing members 40. One side Q1 of the interior D of the optical cover part 80 in the second direction Q is closed by the first cover part 80a. The other side Q2 of the interior D of the optical cover part 80 in the second direction Q is closed by the second cover part 80b. The other side R2 of the interior D of the optical cover part 80 in the third direction R is closed by the third cover part 80c. One side R1 of the interior D of the optical cover part 80 in the third direction R is open.

Next, the lighting fixture 1 will be further described with reference to FIGS. 3 and 4. FIG. 3 is a sectional view of the lighting fixture 1 taken along the line III-III shown in FIG. FIG. 4 is a partially enlarged view of FIG. 3 and a cross-sectional view of the cover member 30.

As shown in FIGS. 3 and 4, the base member 11 has, for example, a substantially U-shape in cross section. A first opening 14 is formed in the base member 11 . The first opening 14 is located at the end of the base member 11 on the other side R2 in the third direction R. The first opening 14 is a region between the first end 11d and the second end 11e. The first end portion 11d is an end portion of the first base portion 11a on the other side R2 in the third direction R. The second end portion 11e is an end portion of the second base portion 11b on the other side R2 in the third direction R. The first opening 14 communicates the inside C of the base member 11 with the outside of the base member 11 .

The optical cover portion 80 has, for example, a substantially U-shape in cross section. The light cover section 80 covers the plurality of light sources 22. The light cover part 80 is located on the other side R2 in the third direction R with respect to the plurality of light sources 22. Therefore, the light cover section 80 covers the plurality of light sources 22 from the other side R2 in the third direction R.

A second opening 81 is formed in the optical cover portion 80 . The second opening 81 communicates the inside D of the optical cover part 80 with the outside. The second opening 81 is located at an end of the optical cover portion 80 on one side R1 in the third direction R. The second opening 81 is a region between the third end 80d and the fourth end 80e. The third end portion 80d is an end portion of the first cover portion 80a on one side R1 in the third direction R. The fourth end portion 80e is an end portion of the second cover portion 80b on one side R1 in the third direction R. The second opening 81 communicates the inside D of the optical cover part 80 with the outside of the optical cover part 80 .

The dimension α1 of the optical cover portion 80 in the second direction Q is approximately equal to the dimension α2 of the base member 11 in the second direction Q (α1≈α2). Specifically, the dimension α1 indicates the dimension from the outer side of the third end 80d to the outer side of the fourth end 80e. Specifically, the dimension α2 indicates the dimension from the outer side of the first end 11d to the outer side of the second end 11e. Therefore, when attaching the light source unit U2 to the base member 11, the third end 80d contacts the first end 11d, and the fourth end 80e contacts the second end 11e. As a result, the optical cover section 80 is restricted from entering the interior C of the base member 11. In other words, the optical cover part 80 is formed so as not to be able to enter the interior C of the base member 11.

The entrance section 90 is connected to the optical cover section 80 . The entrance portion 90 projects from the optical cover portion 80 to the outside of the optical cover portion 80 . Specifically, the entrance portion 90 is connected to the edge of the second opening 81. The entrance portion 90 projects from the edge of the second opening 81 to the outside of the optical cover portion 80 .

In this embodiment, the entrance portion 90 is integrally molded with the optical cover portion 80. Therefore, the entrance portion 90 and the optical cover portion 80 are made of the same material.
Note that the entrance portion 90 may be configured separately from the optical cover portion 80 and the entrance portion 90 may be fixed to the optical cover portion 80. In this case, the entrance portion 90 and the optical cover portion 80 may be made of different materials. For example, the optical cover part 80 is made of a material that allows light to pass therethrough, while the entrance part 90 is made of a material that does not allow light to pass therethrough. That is, out of the optical cover part 80 and the entrance part 90, at least the optical cover part 80 needs to transmit light.

The entry portion 90 can enter the interior C of the base member 11. Therefore, the entry portion 90 enters the interior C of the base member 11. Specifically, the entry portion 90 enters the interior C of the base member 11 via the first opening 14 .

The entrance section 90 has a first entrance body 91 and a second entrance body 92. The first intruding body 91 and the second intruding body 92 are arranged with a gap between them. The first intruding body 91 and the second intruding body 92 face each other along the second direction Q with a gap between them.

The first intruding body 91 and the second intruding body 92 have shapes that are symmetrical to each other about the central axis β. The central axis β extends along the third direction R while passing through the central portion of the optical cover portion 80 in the second direction Q.

The first entry body 91 has a first base end 93a and a first tip end 94a. The second entry body 92 has a second base end portion 93b and a second tip end portion 94b.
The first penetrating body 91 and the second penetrating body 92 are each provided continuously to the optical cover section 80 . Specifically, the first base end portion 93a of the first entry body 91 is provided continuously to the third end portion 80d of the first cover portion 80a. Further, the second base end portion 93b of the second entry body 92 is provided continuously to the fourth end portion 80e of the second cover portion 80b.

The first intruder 91 and the second intruder 92 protrude from the optical cover section 80 to the outside of the optical cover section 80 .
The first intrusion body 91 and the second intrusion body 92 move closer to each other as they move away from the first cover part 80a. The first intrusion body 91 and the second intrusion body 92 each have a shape that is bent at approximately right angles at a plurality of locations. Therefore, the first intrusion body 91 and the second intrusion body 92 approach each other in stages as they move away from the first cover part 80a.
The first tip 94a of the first intruder 91 and the second tip 94b of the second intruder 92 each protrude along the second direction Q toward the central axis β.

The maximum dimension α3 of the entrance portion 90 in the second direction Q is smaller than the dimension α4 of the first opening 14 in the second direction Q (α3<α4). The maximum dimension α3 specifically indicates the dimension from the outer side of the first base end portion 93a to the outer side of the second base end portion 93b. Therefore, the entrance part 90 (the first entrance body 91 and the second entrance body 92) is formed so as to be able to enter into the interior C of the base member 11.

A space E is formed between the first intruding body 91 and the second intruding body 92. The void E is arranged outside the optical cover part 80. The void E communicates with the interior D of the optical cover part 80. Specifically, the void E communicates with the interior D of the optical cover part 80 via the second opening 81. A plurality of light sources 22 are arranged in the empty space E. Moreover, the mounting member 21 is arranged in the empty space E.

The holding member 50 is arranged outside the optical cover part 80.
The holding member 50 is attached to the entrance portion 90. When the holding member 50 is attached to the entry section 90, for example, (a) the holding member 50 is detachably attached to the entry section 90, (b) the holding member 50 is fixed to the entry section 90, or , (c) means that the holding member 50 and the entry portion 90 are integrally molded. In this embodiment, the holding member 50 is detachably attached to the entrance portion 90.

The holding member 50 engages with the entry portion 90 . The holding member 50 is slidably supported by the entrance portion 90. Specifically, the holding member 50 is supported by the entrance portion 90 so as to be slidable in the first direction P. Therefore, the holding member 50 can be attached to and removed from the entrance portion 90 by sliding the holding member 50 while engaging with the entrance portion 90 .

The holding member 50 has a first holding part 51, a second holding part 52, and a mounting surface 53.

The first holding part 51 is provided corresponding to the entrance part 90 and engages with the entrance part 90. The first holding part 51 has a first holding body 51a and a second holding body 51b. The first holding body 51a is formed on one side Q1 of the holding member 50 in the second direction Q. The second holding body 51b is formed on the other side Q2 of the holding member 50 in the second direction Q.

The first holding body 51a has a bent shape along the first tip portion 94a of the first entering body 91. Therefore, the first tip portion 94a of the first entry body 91 can be fitted into the first holding body 51a. Further, the second holding body 51b has a bent shape along the second tip portion 94b of the second entering body 92. Therefore, the second tip portion 94b of the second entry body 92 can be fitted into the second holding body 51b.

The holding member 50 enters by fitting the first tip 94a of the first entering body 91 into the first holding body 51a and fitting the second tip 94b of the second entering body 92 into the second holding body 51b. 90. As a result, the holding member 50 is attached to the entrance portion 90.
That is, the entrance section 90 has a first entrance body 91 and a second entrance body 92 that are arranged with a gap between them, and the holding member 50 is attached to the first entrance body 91 and the second entrance body 92. .

The entrance portion 90 supports the holding member 50 so as to be slidable along the first direction P. Therefore, the holding member 50 can be slid along the first direction P with respect to the entrance portion 90.
When the holding member 50 slides along the first direction P and separates from the entrance portion 90, the engagement between the holding member 50 and the entrance portion 90 is released. As a result, the holding member 50 is removed from the entry portion 90.

The second holding portion 52 is provided corresponding to the mounting member 21 and engages with the mounting member 21. With the first holding part 51 engaged with the entrance part 90, the second holding part 52 is formed on the surface of the holding member 50 that faces the interior D of the optical cover part 80. The second holding part 52 has a third holding body 52a and a fourth holding body 52b. The third holding body 52a is formed on one side Q1 of the holding member 50 in the second direction Q. The fourth holding body 52b is formed on the other side Q2 of the holding member 50 in the second direction Q.

The third holder 52a has a bent shape along the fifth end 21a of the mounting member 21 on one side Q1 in the second direction Q. Therefore, the fifth end 21a of the mounting member 21 can be fitted into the third holder 52a. Further, the fourth holder 52b has a bent shape along the sixth end 21b of the mounting member 21 on the other side Q2 in the second direction Q. Therefore, the sixth end portion 21b of the mounting member 21 can be fitted into the fourth holding body 52b.

The mounting member 21 is engaged with the holding member 50 by fitting the fifth end 21a of the mounting member 21 into the third holding body 52a and fitting the sixth end 21b of the mounting member 21 into the fourth holding body 52b. match. As a result, the mounting member 21 is attached to and held by the holding member 50.

The holding member 50 supports the mounting member 21 in a slidable manner along the first direction P. Therefore, the mounting member 21 can be slid along the first direction P with respect to the holding member 50.
When the mounting member 21 slides along the first direction P and separates from the holding member 50, the engagement between the mounting member 21 and the holding member 50 is released. As a result, the mounting member 21 is removed from the holding member 50.

Hereinafter, one of the plurality of light sources 22 will be explained. This is because, in this embodiment, the plurality of light sources 22 have mutually similar configurations.
The light source 22 has a light emitting surface 22a, a light source mounting surface 22b, and a side surface 22c. The light source mounting surface 22b is a surface of the light source 22 that faces the mounting member 21. Therefore, the light source attachment surface 22b of the light source 22 is attached to the mounting member 21.
The light emitting surface 22a is arranged on the back side of the light source mounting surface 22b. The side surface 22c is arranged between the light emitting surface 22a and the light source mounting surface 22b.
The light emitting surface 22a is a surface of the light source 22 that emits light. Therefore, the light source 22 of this embodiment emits light from the light emitting surface 22a among the light emitting surface 22a, the light source mounting surface 22b, and the side surface 22c.
The light source 22 faces the interior D of the light cover section 80 and is disposed outside the light cover section 80 . Specifically, the light emitting surface 22a of the light source 22 is arranged opposite to the interior D of the light cover section 80 and at the outside of the light cover section 80. Therefore, the light source 22 emits light into the interior D of the optical cover part 80 from the light emitting surface 22a. As a result, the light emitted into the interior D of the light cover section 80 passes through the light cover section 80 and is emitted to the outside of the light cover section 80.
In this embodiment, specifically, the light emitting surface 22a of the light source 22 faces the interior D of the optical cover part 80 via the second opening 81. Then, the light source 22 emits light from the light emitting surface 22a to the interior D of the optical cover part 80 via the second opening 81.

The attachment surface 53 is a surface of the holding member 50 on the back side of the surface on which the second holding portion 52 is formed.

The attachment member 60 is attached to the holding member 50. Specifically, the attachment member 60 is attached to the attachment surface 53 of the holding member 50. The mounting member 60 has elasticity and is made of metal (for example, stainless steel).

The attachment member 60 is fixed to the base member 11 in a state in which the entry portion 90 enters the interior C of the base member 11. Specifically, with the entry portion 90 entering the interior C of the base member 11, the elasticity of the mounting member 60 causes the mounting member 60 to be pressed against the inner surface of the base member 11. As a result, the light source unit U2 is attached to the base member 11.

When the light source unit U2 is attached to the base member 11, the light source unit U2 is held by the base member 11. As a result, the light source unit U2 is attached to the mounting body via the base member 11 and installed in the mounting body.

From the state where the light source unit U2 is attached to the base member 11, the light source unit U2 can be pulled and removed from the base member 11. That is, by releasing the base member 11 from the elastic force of the attachment member 60, the light source unit U2 can be removed from the base member 11.

As described above with reference to FIGS. 3 and 4, the plurality of light sources 22 are arranged facing the interior D of the optical cover part 80 and at the outside of the optical cover part 80. Specifically, the light emitting surface 22a of each of the plurality of light sources 22 faces the interior D of the light cover section 80 and is arranged outside the light cover section 80. Therefore, the plurality of light sources 22 can be arranged apart from the light cover part 80, and the light emitted by the plurality of light sources 22 can reach a wide area of the light cover part 80. That is, the light traveling while spreading at a predetermined angle (for example, 120 degrees) from the light emitting surface 22a of each of the plurality of light sources 22 is allowed to enter the interior D of the light cover part 80, and the first cover part of the light cover part 80 is 80a and the vicinity of the upper ends of the second cover part 80b. As a result, almost the entire light cover section 80 can emit light, and uneven light emission occurring in the light cover section 80 can be reduced.

Further, the holding member 50 holds the mounting member 21 on which the plurality of light sources 22 are mounted. The holding member 50 is arranged outside the optical cover part 80. Therefore, a plurality of light sources 22 are arranged outside the optical cover part 80. As a result, it becomes possible to reduce uneven light emission occurring in the light cover section 80.

Further, the holding member 50 is arranged outside the optical cover section 80. Therefore, the work of attaching and detaching the mounting member 21 to and from the holding member 50 can be smoothly performed while the interior C of the optical cover portion 80 is closed. That is, with the pair of second closing members 40 attached to the optical cover portion 80, the work of attaching and detaching the mounting member 21 to and from the holding member 50 can be smoothly performed. As a result, the ease of assembling the light source unit U2 can be improved.

Next, with reference to FIG. 3, the light source unit U2 when attached to the base member 11 will be described.

As shown in FIG. 3, the light cover section 80 is arranged outside the base member 11 with the light source unit U2 attached to the base member 11.

With the light source unit U2 attached to the base member 11, the entrance section 90 (the first entrance body 91 and the second entrance body 92) is arranged inside the base member 11.

The holding member 50 is arranged inside the base member 11 with the light source unit U2 attached to the base member 11.

With the light source unit U2 attached to the base member 11, the mounting member 21 is placed inside the base member 11.

With the light source unit U2 attached to the base member 11, the space E is arranged inside the base member 11. With the light source unit U2 attached to the base member 11, the interior D of the optical cover portion 80 is arranged outside the base member 11.

With the light source unit U2 attached to the base member 11, the plurality of light sources 22 are arranged facing the interior D of the light cover section 80 and at the outside of the light cover section 80. With the light source unit U2 attached to the base member 11, the plurality of light sources 22 are arranged inside the base member 11. With the light source unit U2 attached to the base member 11, the plurality of light sources 22 are arranged to intersect with the central axis β, respectively.

As described above with reference to FIG. 3, the plurality of light sources 22 are arranged inside the base member 11. Therefore, it is possible to arrange the plurality of light sources 22 apart from the light cover part 80 and reduce the uneven light emission that occurs in the light cover part 80.

Moreover, by arranging the plurality of light sources 22 inside the base member 11, the distance between the plurality of light sources 22 and the lower part of the optical cover part 80 (third cover part 80c) can be increased. Therefore, in the lower part of the light cover part 80, the difference between the brightness directly below the light source 22 and the surrounding brightness directly below the light source 22 can be reduced. As a result, when the light cover part 80 is viewed from below, it is possible to suppress the occurrence of dark areas in the parts of the light cover part 80 located between the adjacent light sources 22, and the occurrence of dark parts in the lower part of the light cover part 80. It is possible to reduce uneven light emission.

Next, the mounting member 70 will be explained with reference to FIGS. 5 to 7. FIG. 5 is an exploded perspective view showing the mounting member 70.

As shown in FIG. 5, the mounting member 70 is mounted on the end 50a of the holding member 50 in the first direction P. The mounting member 70 is made of, for example, synthetic resin. The mounting member 70 is, for example, elastically deformable. The mounting member 70 has a main body portion 71 , a first engaging portion 72 , a second engaging portion 73 , and a contact portion 74 . A first engaging portion 72 , a second engaging portion 73 , and a contact portion 74 are connected to the main body portion 71 . In this embodiment, the main body portion 71, the first engaging portion 72, the second engaging portion 73, and the contact portion 74 are integrally molded. The main body portion 71 has a substantially flat plate shape. The first engaging portion 72 and the second engaging portion 73 are arranged opposite to each other along the second direction Q with an interval between them. The first engaging portion 72 and the second engaging portion 73 each protrude from the main body portion 71 along the first direction P.

FIG. 6 is a partially enlarged view of FIG. 3 and a cross-sectional view showing the holding member 50. FIG.
As shown in FIGS. 5 and 6, the first engaging portion 72 has a shape corresponding to the space F1 surrounded by the first holder 51a and the third holder 52a. The first engaging portion 72 fits into the space F1. Further, the second engaging portion 73 has a shape corresponding to the space F2 surrounded by the second holding body 51b and the fourth holding body 52b. The second engaging portion 73 fits into the space F2. The attachment member 70 is attached to the holding member 50 by fitting the first engagement portion 72 into the space F1 and fitting the second engagement portion 73 into the space F2.

FIG. 7 is a sectional view showing a part of the lighting fixture 1. Specifically, FIG. 7 is a cross-sectional view of the central part of the lighting fixture 1 shown in FIG. 1 taken parallel to the first direction P and parallel to the third direction R.
FIG. 7 shows a state in which the mounting member 70 is mounted on the holding member 50. As shown in FIG. 7, the contact portion 74 contacts the second closing member 40. As shown in FIG. Therefore, the mounting member 70 is sandwiched between the holding member 50 and the second closing member 40 from both sides in the first direction P. As a result, the state in which the mounting member 70 is mounted on the holding member 50 can be maintained.

Further, the mounting member 70 faces the mounting member 21 in the first direction P. That is, the mounting member 70 faces the end of the mounting member 21 in the first direction P. As a result, when mounting the mounting member 21 while sliding it on the holding member 50, the mounting member 21 can be brought into contact with the mounting member 70, and the mounting member 21 can be stopped at a targeted position. That is, it is possible to prevent the mounting member 21 from sliding too much and falling off from the mounting member 21. As a result, the mounting member 21 can be smoothly attached to the holding member 50, and the ease of assembling the light source unit U2 can be improved.

In this embodiment, a pair of mounting members 70 are provided. One of the pair of attachment members 70 is attached to an end of the holding member 50 on one side P1 in the first direction P. The other one of the pair of attachment members 70 is attached to the end 50a of the holding member 50 on the other side P2 in the first direction P. As a result, the pair of mounting members 70 can sandwich the holding member 50 and the mounting member 21 from both sides in the first direction P, and can hold the holding member 50 and the mounting member 21.

The embodiments of the present invention have been described above with reference to the drawings (FIGS. 1 to 7). However, the present invention is not limited to the above-described embodiments, and can be implemented in various embodiments without departing from the spirit thereof (for example, (1) to (2) shown below). Moreover, various inventions can be formed by appropriately combining the plurality of components disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiments. For ease of understanding, the drawings mainly schematically show each component, and the number of each component shown in the drawings may differ from the actual number due to drawing preparation. Moreover, each component shown in the above embodiment is an example, and is not particularly limited, and various changes can be made without substantially departing from the effects of the present invention.

(1) In this embodiment, the holding member 50 that holds the mounting member 21 is provided in the entry portion 90. The mounting member 21 and the optical cover section 80 are configured to be detachable from the base member 11 via the attachment member 60. However, the present invention is not limited thereto. A holding portion that holds the mounting member 21 may be provided on the base member 11. In this case, the mounting member 21 is configured to be detachable from the base member 11 via the holding portion. The optical cover section 80 is configured to be detachable from the base member 11 via the attachment member 60. As a result, it becomes possible to attach and detach the mounting member 21 (light source 22) to and from the base member 11 independently of the optical cover part 80.

(2) In this embodiment, the plurality of light sources 22 are lined up in a row along the first direction P. However, the present invention is not limited thereto. A plurality of light sources 22 may be arranged in a plurality of rows along the first direction P. However, arranging the plurality of light sources 22 in a line as in this embodiment is advantageous in that the number of light sources 22 can be reduced, and the manufacturing cost and running cost of the light source unit U2 can be reduced.

Furthermore, when a plurality of light sources 22 are arranged in a plurality of rows, there is a possibility that the plurality of light sources 22 come close to the side portions of the optical cover section 80 (the first cover section 80a and/or the second cover section 80b). On the other hand, as in the present embodiment, by arranging the plurality of light sources 22 in a line along the first direction P and arranging the plurality of light sources 22 on the central axis β, the plurality of light sources 22 can be prevented from coming close to the side part of the optical cover part 80. As a result, it is possible to effectively suppress the occurrence of dark areas of the plurality of light sources 22 on the sides of the light cover section 80.

INDUSTRIAL APPLICATION This invention provides a light source unit and a lighting fixture, and has industrial applicability.

11 Base member 21 Mounting member 22 Light source 50 Holding member 70 Mounting member 80 Light cover part 90 Entry part U2 Light source unit

Claims (8)

a base member attached to the mounting body;
and a light source unit that is detachable from the base member,
The light source unit is
a light source that emits light;
a light cover portion through which the light passes;
a mounting member on which the light source is mounted;
a holding member that holds the mounting member;
The light source faces inside the light cover part,
The optical cover section includes a first cover section, a second cover section facing the first cover section, and a space between the first cover section and the second cover section between the first cover section and the second cover section. and a third cover part with the cover part interposed therebetween;
The base member includes a first base portion, a second base portion facing the first base portion, and a portion between the first base portion and the second base portion that is connected to the first base portion and the second base portion. a third base part interposed therebetween;
Inside the optical cover part, there is a cavity surrounded by the first cover part, the second cover part, and the third cover part of the optical cover part,
Each of the first cover part, the second cover part, and the third cover part of the light cover part faces the light source via the cavity,
The first cover part and the second cover part have a substantially flat plate shape,
The first base portion and the second base portion have a substantially flat plate shape,
The holding member is formed with a holding body having a U-shape in cross section and having a shape along at least one of both ends of the mounting member in the transverse direction,
The holding body has a side portion opposite to the side surface of the mounting member in the transverse direction, and an overlapping portion that overlaps the end portion of the mounting member in the transverse direction along the attachment/detachment direction,
In the lighting fixture, the attachment/detachment direction is a direction in which the light source unit is attached/detached to/from the base member. The light source unit has an entrance part connected to the light cover part,
The lighting fixture according to claim 1, wherein the entry portion is located inside the base member. The first cover part and the second cover part are arranged substantially parallel to each other,
The lighting fixture according to claim 1 or 2, wherein the first base part and the second base part are arranged substantially parallel to each other. The outer surface of the first cover part and the outer surface of the first base part are arranged substantially flush with each other,
The lighting fixture according to claim 3, wherein an outer surface of the second cover part and an outer surface of the second base part are arranged substantially flush with each other. With the base member attached to the mounting body,
The base member and the optical cover part are arranged side by side in the vertical direction,
The lighting fixture according to claim 3 or 4, wherein the length of the light cover portion in the vertical direction is approximately equal to the length of the base member in the vertical direction. The base member and the optical cover portion extend along a first direction,
The length of the light cover part in the second direction is approximately equal to the length of the base member in the second direction,
The lighting fixture according to any one of claims 3 to 5, wherein the second direction is a direction perpendicular to the attachment/detachment direction and the first direction. The lighting fixture according to claim 2, wherein the holding member holds the entrance portion. The entrance part has a first entrance body and a second entrance body that are spaced apart from each other,
The first entry body is connected to the first cover part and has a first tip part,
The second entry body is connected to the second cover part and has a second tip part,
The holding member has a first holding body into which the first tip portion is fitted, and a second holding body into which the second tip portion is fitted,
The first entering body, the second entering body, the first holding body, and the second holding body extend along a first direction,
The first holding body is arranged to sandwich the first tip of the first intrusion body in a second direction,
The second holding body is arranged to sandwich the second tip of the second intrusion body in the second direction,
The lighting fixture according to claim 7, wherein the second direction is a direction perpendicular to the attachment/detachment direction and the first direction.

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