Lighting fixtures

Abstract

To provide a lighting device which achieves high light effect by devising a combination structure of an inner cover and an outer cover.SOLUTION: A lighting device includes: an attachment component 2 having an opening 4 at the front surface side and installed on a device attachment surface 9; a light source 3 disposed at the opening 4; an inner cover 90 covering the front surface side of a body 31; and an outer cover 37 which is disposed so as to cover the inner cover 90. The inner cover 90 is disposed contacting with an inner surface of the outer cover 37 tightly. The outer cover 37 has a given space between itself and the inner cover 90. The outer cover 37 has: a front surface part 37A in which a prism part 37G is formed at the light radiation surface side; inclined parts 37F respectively erected from corner parts 37E positioned at both ends of the front surface part 37A; and wall parts 37B.SELECTED DRAWING: Figure 5A

Description

Technical Field

[0001] The present invention relates to a lighting fixture.

Background Art

[0002] Generally, lighting fixtures are widely used indoors in general buildings such as detached houses and offices, as well as in special buildings such as schools, gymnasiums, hospitals, theaters, exhibition halls, department stores, factories, and warehouses. The lighting fixtures used in these buildings are usually installed at high places such as ceilings and wall surfaces and are lit by receiving power supply from a commercial power source or the like. Then, the lighting on and off of the lighting fixtures is operated by a wall switch provided in the middle of the indoor wiring or by button operation of a remote controller attached to the lighting fixture.

[0003] Conventionally, as a lighting fixture attached to a ceiling or the like and used, a lighting fixture using columnar LEDs has been proposed (Patent Document 1).

Prior Art Documents

Patent Documents

[0004] ]]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Patent Document 1 is a lighting fixture called so-called integrated base lighting, which has a light source having a main body on which an LED substrate is mounted and a mounting component capable of accommodating the main body, and is used by mounting the mounting component on a ceiling or the like. However, there are problems such as the light emitted from the light source being scattered over a wide range and not being efficiently irradiated to the front (floor surface) side.

[0006] Therefore, in order to solve the problems of the prior art documents, the present invention provides a lighting fixture in which the light emitted from a light source is efficiently irradiated to the floor surface side, has anti-glare properties, and has a high lighting effect. [Means for solving the problem]

[0007] To achieve the above objective, the lighting fixture of the present invention is A mounting component having an opening on the front side and installed on the fixture mounting surface, A light source having a body that is roughly rectangular in shape and is placed in the aforementioned opening, An inner cover that covers the front side of the main body, It comprises an outer cover located outside the inner cover and positioned to cover the inner cover, Both the inner cover and the outer cover are elongated members having a roughly U-shaped cross-section and an opening at the top. The inner cover is positioned in close contact with the inner surface of the outer cover, and the outer cover has a certain space between it and the inner cover. The outer cover has a front portion on the light-emitting surface side with a prism portion formed thereon, corner portions located at both ends of the front portion, and inclined portions rising from the corner portions. It is characterized by the following: [Effects of the Invention]

[0008] According to the present invention, by using a combination structure of two types of covers, an inner cover and an outer cover, as a cover to cover the front of the lighting fixture, it is possible to provide a lighting fixture that improves glare resistance, light diffusion, etc., and has a high lighting effect. [Brief explanation of the drawing]

[0009] [Figure 1] (A) A longitudinal side view of the lighting fixture according to the embodiment, (B) a plan view thereof, and (C) a side view thereof viewed from the end side. [Figure 2] (A) A rear view of the light source according to the embodiment and a side view seen from the end side, (B) A longitudinal side view of the light source, and (C) A front view thereof. [Figure 3] This is a perspective view of the mounting component according to the embodiment, viewed from above. [Figure 4] This is a partial cross-sectional perspective view of the locking member of the mounting component according to the embodiment, viewed from below. [Figure 5A] Figure 1 is a cross-sectional view of the lighting fixture along line AA. [Figure 5B] This is an enlarged cross-sectional view of the area marked B in Figure 5A. [Modes for carrying out the invention]

[0010] To facilitate understanding of the present invention, an example of a lighting fixture according to an embodiment of the present invention will be described with reference to Figures 1 to 5B. The lighting fixture according to an embodiment of the present invention is a long lighting fixture having a light source in which light-emitting elements such as LEDs, generally referred to as integrated base lighting, are mounted in a row on a substrate.

[0011] The embodiments described below are merely specific examples of the present invention; therefore, the arrangement, functions, and numerical values ​​of the components described in these embodiments are merely examples, and the scope of the present invention should not be limited by them. Furthermore, some components such as wiring and screws that make up the lighting fixture have been omitted from the drawings to avoid making them too complex.

[0012] (Embodiment) Figure 1(A) is a longitudinal side view of a lighting fixture 1 according to an embodiment of the present invention, Figure 1(B) is a plan view thereof, and Figure 1(C) is a side view thereof viewed from the end side. As shown in Figures 1(A) to (C), the lighting fixture 1 according to the embodiment comprises a mounting component 2 and a light source 3, both of which are elongated members. The mounting component 2 is installed on the location where the lighting fixture 1 is to be installed (the fixture mounting surface), such as the ceiling 9, and the light source 3 is attached to the lower side of the mounting component 2. The light source 3 is also referred to as a light source module or light source unit.

[0013] In this invention, in the lighting fixture 1, the side from which light is emitted from the light source 3 is called the front side (floor side), the side facing the ceiling 9 is called the back side (ceiling side), the direction parallel to the floor (ceiling) is called the horizontal direction, and the direction perpendicular to the floor (ceiling) is called the vertical direction (see Figure 5A).

[0014] FIG. 2(A) is a rear view of the light source 3 according to the embodiment, a side view seen from the end side, FIG. 2(B) is a side view in the longitudinal direction of the light source 3, and FIG. 2(C) is a front view thereof. As shown in FIG. 2(A), on the back surface of the main body 31 of the light source 3, a power supply circuit 36 that receives power supply from a commercial power supply through a connector 39 is arranged. On both sides of the power supply circuit 36, a pair of holding members 55 for connecting to the mounting component 2 are installed.

[0015] As shown in FIG. 2(B), on the upper part of the light source 3, a pair of holding members 55 are installed, and the pair of holding members 55 are arranged such that the distances from the longitudinal ends to the holding members 55 are different from each other. Thereby, it is possible to prevent the light source 3 from being erroneously attached to the mounting component 2 in the reverse direction by an operator.

[0016] The main body 31 is composed of a flat plate having a substantially rectangular parallelepiped shape and functions as a heat sink that radiates heat generated from the substrate 34, the power supply circuit 36, etc. Further, the main body 31 supports the outer cover 37, a substrate 34 on which a light emitting element 35 is surface-mounted is provided on the main body front surface 31B side, and a power supply circuit 36 is arranged on the main body back surface 31A side. The main body 31 is formed from a metal material such as aluminum or iron, but a synthetic resin having high thermal conductivity may also be used.

[0017] As shown in FIG. 2(C), on the main body front surface 31B, a substrate 34 having a substantially rectangular planar shape with a plurality of light emitting elements 35 surface-mounted in a row is arranged. On the side surface of the substrate 34, locking portions 34A that are narrow portions of the side surface width are provided at a plurality of locations by cutting both side surfaces. By arranging the substrate guide 34B on the locking portion 34A, the substrate 34 is fixed to the main body front surface 31B, and the sliding range of the substrate 34 can be minimized. Further, the substrate guide 34B is formed from a transparent synthetic resin material, but a member colored yellow, blue, etc. may also be used.

[0018] The light-emitting element 35 is composed of light-emitting elements such as LEDs, which consist of white or a combination of red, blue, and green light. In the light source 3, multiple light-emitting elements 35 are used, and the light-emitting elements 35 are mounted on a planar, roughly rectangular substrate 34 at approximately equal intervals in the row direction.

[0019] The substrate 34 consists of a single flat plate corresponding to the length of the light source 3, but it may also be constructed by arranging multiple rectangular substrates 34 in a row and connecting them to each other. Furthermore, the light-emitting elements 35 are not limited to being arranged in a row on the substrate 34, but may be arranged in multiple parallel rows, or a mixture of multiple rows and single rows. In addition, the light source 3 emits a daylight white light, but it may also emit a daylight white or incandescent white light.

[0020] The power supply circuit 36 ​​receives commercial power from a power terminal block (not shown) through a connector 39, converts it to DC power, and supplies DC power to the circuit board 34. The power supply circuit 36 ​​also controls the applied voltage and current to dim the light source 3, such as turning it on, off, dimming, and increasing its brightness. Furthermore, it may also control the color temperature, such as daylight white, white, or incandescent light. These dimming and color temperature operations may be performed using an operation switch on the main unit 31, a wall switch, or an external remote controller (none of which are shown).

[0021] Figure 3 is a perspective view of the mounting component 2 according to the embodiment, viewed from above. The mounting component 2 has a locking member 53, consisting of a first locking member 40 and a second locking member 50, shown by a dotted line, on the bottom surface of the light source mounting section 21. The locking member 53 is a connector for attaching the light source 3 to the mounting component 2. Two locking members 53 are arranged in the longitudinal direction of the entire mounting component 2. Similar to the holding member 55 described above, the distances of the locking members 53 from the longitudinal ends of the mounting component 2 are different from each other. This prevents the worker from making mistakes such as attaching the light source 3 in the wrong direction relative to the mounting component 2.

[0022] Figure 4 is a partial cross-sectional perspective view of the locking member 53 of the mounting part 2 according to the embodiment, viewed from below. The mounting part 2 is formed by bending a metal plate-like member and is provided with a light source mounting part 21 which is a roughly rectangular parallelepiped shape with an opening 4 on the floor side and a pair of reflectors 28 which are inclined toward the ceiling 9 side. The light source 3 is mounted in the opening 4. Between the opening 4 and the reflectors 28, there are roughly horizontal bottom portions 30 on both sides and roughly L-shaped edges 29 are provided on both sides of the reflectors 28 toward the ceiling 9. One side of the roughly L-shaped edge 29 toward the ceiling 9 is a contact surface that is in contact with the ceiling 9.

[0023] The surface of the reflector 28 is painted with white paint or the like, and by reflecting the light emitted from the light source 3 towards the floor, the light emitted from the light source 3 is efficiently reflected towards the front, thereby brightly illuminating the room.

[0024] As shown in Figure 4, at least one of the first locking member 40 and the second locking member 50 is elastically deformed by pressure from the direction in which the first locking member 40 and the second locking member 50 are facing each other. The first locking member 40 has a shape that includes a first bent portion 41 that bends toward the front side (floor side) from the orientation of the bottom surface of the light source mounting portion 21, an intermediate portion 42 that is continuous with the first bent portion 41 and extends toward the front side (floor side), and a tip portion 43 that has a shape that locks onto the first holding member 60 formed at its tip. The tip portion 43 curves toward the side where the first bent portion 41 protrudes from the intermediate portion 42 and bends toward the rear side (ceiling side).

[0025] The second locking member 50 is formed in a shape having a second bent portion 51 that bends horizontally from the orientation of the bottom surface of the light source mounting portion 21. The second bent portion 51 protrudes in the opposite direction to the first bent portion 41. In the example of Figure 4, the first bent portion 41 protrudes on the opposite side to the second locking member 50, and the second bent portion 51 protrudes on the opposite side to the first locking member 40. That is, the curved portion of the second bent portion 51 is convex on the opposite side to the first locking member 40. The second locking member 50 also extends from the bottom surface of the light source mounting portion 21 toward the front side, and at the second bent portion 51, it protrudes from the orientation of the bottom surface of the light source mounting portion 21 toward the opposite side to the first locking member 40 and bends in an arc toward the front side. A locking connecting portion 45 is provided between the first locking member 40 and the second locking member 50 and is attached to the bottom surface of the light source mounting portion 21 of the mounting part 2 by a fastener 46.

[0026] With the back surface 31A of the light source 3 facing the mounting component 2, the light source 3 is pushed upward towards the ceiling 9 and inserted into the opening 4 of the mounting component 2. The first locking member 40 and the second locking member 50 are then inserted into the first insertion hole and the second insertion hole (both not shown) formed in the first holding member 60 and the second holding member 70, respectively, and the light source 3 is attached to the mounting component 2.

[0027] Mounting component 2 is fixed to the building ceiling 9 by a fixture mounting bracket (not shown). The fixture mounting bracket is a component for attaching mounting component 2 to the installation location of the lighting fixture 1, and is composed of fasteners such as bolts and nuts. Typically, the fixture mounting bracket, consisting of bolts placed on the ceiling 9, is fixed by fastening nuts to bolts that pass through holes drilled in mounting component 2. The fastening means is not limited to bolts and nuts; other means such as screw fastening may also be used.

[0028] Mounting component 2 is formed by bending a metal plate-like member and is provided with a light source mounting section 21 that is roughly rectangular in shape with an opening 4 on the floor side and a pair of reflectors 28 that are inclined toward the ceiling 9 side. The light source 3 is mounted in the opening 4.

[0029] Figure 5A is a cross-sectional view of lighting fixture 1 shown in Figure 1 along line AA, and Figure 5B is an enlarged cross-sectional view of the area marked B in Figure 5A. Figure 5A shows lighting fixture 1 shown in Figure 1 installed on ceiling 9. In Figure 5A and other figures, the components are drawn as schematic cross-sectional views, and hatching representing the cross-section and internal structure are generally omitted.

[0030] As shown in Figure 5A, a first holding member 60, a second holding member 70, and a connecting member 65 that connects these members are provided on the back surface 31A of the main body of the light source 3. The first holding member 60 and the second holding member 70 each have a first insertion hole and a second insertion hole (neither of which are shown). The first holding member 60, the second holding member 70, and the connecting member 65 all protrude from the back surface 31A of the main body toward the rear side (ceiling side).

[0031] An inner cover 90 and an outer cover 37 are arranged in a double layer to cover the entire light-emitting surface (floor surface) of the light-emitting element 35. The inner cover 90 has a milky white cross-section and is formed in an elongated shape with an opening on its upper surface, and is a member that allows light emitted from the light-emitting element 35 to pass to the floor surface. The inner cover 90 is not limited to being milky white; its surface may be frosted glass-like.

[0032] The outer cover 37, positioned so as to be in close contact with the inner surface of the inner cover 90, has a roughly U-shaped cross-section, similar to the inner cover 90, with an opening on its upper surface and is formed to be elongated in the longitudinal direction. Light emitted from the light-emitting element 35 passes through the inner cover 90 and is scattered towards the floor surface through the outer cover 37. The inner cover 90 is made of a transparent material, but it may be made of other materials such as milky white.

[0033] The front surface 37A of the outer cover 37, facing the floor, is provided with a prism section 37G that has a roughly triangular cross-section. The prism section 37G has a top, a slanted surface, and a bottom surface, and is arranged in multiple rows roughly parallel to the front surface 37A of the outer cover 37 along the longitudinal direction of the main body 31.

[0034] The prism section 37G is positioned such that its apex, which has a roughly triangular cross-section, faces the light-emitting surface, and its bottom surface is located on the front of the outer cover. By refracting the light emitted from the light-emitting element 35 through the inner cover 90 towards the floor, it reduces glare caused by the granular appearance of the light-emitting element 35, improves light diffusion, and enhances the degree of light concentration toward the floor. In this embodiment, the prism section 37G is shown with a roughly triangular cross-section, but it is not limited to this, and may have a semicircular, trapezoidal, or polygonal cross-section.

[0035] The inner cover 90 and the outer cover 37 are in close contact at the bottom surface 90 of the inner cover 90 and the upper outer surface of the vertical part 90B, with their openings facing the front surface 31B of the main body. The outer cover 37 is fixed to the main body 31 with its opening facing the front surface 31B of the main body, and covers the entire front surface of the substrate 34 on which the light-emitting element 35 is mounted within the opening. The outer cover 37 covers the entire front surface 31B of the main body 31, including the light source 3, from the front side (floor side).

[0036] The outer cover 37 is located on the front side (floor side) of the main body 31 and is fixed to the main body 31 at its end. As shown in Figure 5B, the outer cover 37 has a horizontal (parallel to the floor) front portion 37A and acute corners 37E at both ends of the front portion 37A. Following the corners 37E, the outer cover 37 has an inclined portion 37F, a vertical wall portion 37B, and a horizontal surface portion 37C that is continuous in the horizontal state. The horizontal surface portion 37C has a roughly L-shaped edge portion 37D.

[0037] Both the outer cover 37 and the inner cover 90 are formed from a light-diffusing, translucent resin material such as polycarbonate resin or acrylic resin.

[0038] This document describes the configuration of the locking member 53 in the mounting component 2, the configuration of the holding member 55 in the light source 3, and the method of installing the lighting fixture 1 using the locking member 53 and the holding member 55.

[0039] As shown in Figure 5B, the main body 31 is made of a roughly rectangular flat plate, and protrusions 32 are formed at both ends in the longitudinal direction of the main body 31. The protrusion 32 consists of a side portion 32A that is bent vertically in a roughly L-shape towards the front, and a tip portion 32B that is curved in an arc toward the ceiling 9.

[0040] The side portion 32A of the main body 31 and the edge portion 37D of the outer cover 37 are almost identical in shape. The outer cover 37 is fitted into the space formed by the side portion 32A and the tip portion 32B of the protrusions 32 formed at both ends in the longitudinal direction of the main body 31 by inserting the roughly L-shaped edge portion 37D of the outer cover 37 from the longitudinal direction of the main body 31. Subsequently, the outer cover 37 is fixed to the main body 31 so as not to move by fitting side caps (not shown), which have a cross-sectional shape identical to that of the light source 3, onto both ends of the light source 3.

[0041] Since the main body 31 and the outer cover 37 are assembled by the engagement of the protruding portion 32 of the main body 31 and the edge portion 37D of the outer cover 37, the complicated work of joining the main body 31 and the outer cover 37 using multiple fasteners (not shown) that were conventionally used is unnecessary, and the efficiency of the assembly work can be improved. Furthermore, because fasteners (not shown) are not used, the main body 31 and the outer cover 37 can be firmly connected.

[0042] Furthermore, in this embodiment, since there is a gap between the main body 31 and the outer cover 37, the thermal expansion of components such as the main body 31 and the outer cover 37 caused by heat generated by the substrate 34 on which the light-emitting element 35 is mounted and the power supply circuit 36 ​​is absorbed by the gap, thus preventing noises such as creaking caused by thermal expansion.

[0043] Furthermore, multiple protrusions 38 may be formed on the surface of the outer cover 37. As shown in Figure 5B, in this embodiment, two protrusions 38 are provided on the horizontal surface 37C that abuts against the bottom 30 of the mounting part 2, and one protrusion 38 is provided on the wall surface of the L-shaped edge 37D that abuts against the side surface 32A of the main body 31. In addition to the gap created between the main body 31 and the outer cover 37, the protrusions 38 play a role in preventing noises such as creaking that occur when the temperature of the main body 31 rises, etc., by maintaining a certain distance between the surface of the outer cover 37 and the surface of the side surface 32A of the main body 31 when the lighting fixture 1 is in use, due to thermal expansion of each component.

[0044] The protrusions 38 on the surface of the outer cover 37 are semi-cylindrical projections formed in four locations (four lines) parallel to the edge 37D along the longitudinal direction of the outer cover 37. However, the protrusions 38 may be formed from hemispherical members and arranged as a series of dots. Furthermore, the number of protrusions 38 is not limited to four; any number may be arranged as needed.

[0045] Furthermore, as shown in Figure 5B, the tip portion 32B located at the front of the main body 31 and the wall portion 37B of the outer cover 37 are separated by a space α with an elliptical cross-section, indicated by a dotted line. Space α is a space enclosed by width a, height b, and height c. Light emitted from the light source 3 passes through the inside of the outer cover 37 and reaches space α. The light that reaches space α passes through the approximately vertical wall portion 37B of the outer cover 37 and is emitted to the outside of the outer cover 37, illuminating the wall portion 37B brightly. By having space α between the main body 31 and the outer cover 37, the light emitted from the light-emitting element 35 is diffused evenly to the periphery, and no dark areas are created in the corners of the outer cover 37. The main body 31 and the outer cover 37 are arranged such that there is a space between the protruding portion 32 of the main body 31 and the wall portion 37B of the outer cover 37 through which light emitted from the light source 3 can enter.

[0046] Length a is the distance between the tip 32B of the main body 31 and the outer cover 37; length b is the distance between the bottom 30 of the mounting part 2 and the horizontal plane where the tip 32B of the J-shaped projection 32 of the main body 31 and the convex portion 38 of the horizontal surface of the edge 37D of the outer cover 37 are in contact; and length c is the distance between the vertical wall portion 37B of the outer cover 37 and the bottom 30 of the mounting part 2. Length a is 1.0 to 10.0 mm, preferably 2.0 to 5.0 mm. Length b is 3.0 to 20.0 mm, preferably 4.0 to 12.0 mm. Length c is 5.0 to 20.0 mm, preferably 8.0 to 12.0 mm.

[0047] Furthermore, the triangular cross-sectional space β enclosed by the inner cover 90 and the outer cover 37 is formed as a space β that extends in a roughly triangular prism shape along the elongated main body while being sandwiched between the inner cover 90 and the outer cover 37.

[0048] As shown in Figure 5B, the outer cover 37 has inclined sections 37F between the corners 37E on both sides of the front section 37A and the wall section 37B. The inclined sections 37F form a space β as a step between the inner cover 90 and the outer cover 37. The space β reflects the light leaking outward from the wall section 37B and the inclined section 37F of the outer cover 37 off its inner surface and irradiates the front (floor) side, thereby reducing the light leaking from the sides and efficiently irradiating the front, thereby improving the irradiation efficiency on the front side.

[0049] In order to efficiently irradiate the front side from the light-emitting element 35, it is desirable that the inclination angle γ between the inclined portion 37F, which has the corner portion 37E of the outer cover 37 as the origin, and the front portion 37A be parallel to the direction of light irradiation to the front side of the light-emitting element 35. Specifically, the inclination angle γ is 25° to 80°, preferably 30° to 70°, and more preferably 45° to 60°.

[0050] Furthermore, as shown in Figure 5A, the outer wall surface of the light source mounting section 21 is provided with multiple outward-facing hemispherical buffer members 22, similar to the conventional example. The buffer members 22 contact the ceiling 9 and the vertical surface 30B provided on the mounting part 2, thereby preventing rattling of the light source 3 and ensuring its secure positioning.

[0051] Furthermore, this invention is not limited to the above embodiments, and various modifications and applications are possible with respect to the above embodiments.

[0052] According to the present invention, by devising the combination structure of the inner and outer covers of the lighting fixture, it is possible to provide a lighting fixture that improves glare resistance, light diffusion, etc., and has a high lighting effect. [Explanation of Symbols]

[0053] 1 Lighting fixtures 2. Mounting parts 3 light source 4 openings 9. Ceiling (fixture mounting surface) 21 Light source mounting section 22 Cushioning material 28 Reflector 29 Edge 30 bottom 30B vertical plane 31 Main unit 31A Back side of main unit 31B Main unit front 32 Protrusion 32A Side part 32B Tip 34 circuit boards 34A Locking part 34B PCB Guide 35 Light-emitting element 36 Power supply circuit 37 Outer cover 37A Front part 37B Wall section 37C Horizontal part 37D Edge 37E Corner 37F Slope section 37G Prism section 38 Convex part 39 Connectors 40 First locking member 41 1st bending part 42 Middle section 43 Tip 45 Locking connection part 46 Fasteners 50 Second locking member 51 2nd bending part 53 Locking member 55 Retaining member 60 First retaining member 65 Connecting member 70 Second retaining member 90 Inner cover 90A bottom part 90B Vertical section α,β space γ Tilt angle

Claims

1. A mounting component having an opening on the front side and installed on the fixture mounting surface, A light source having a body that is roughly rectangular in shape and is placed in the aforementioned opening, An inner cover that covers the front side of the main body, It comprises an outer cover located outside the inner cover and positioned to cover the inner cover, Both the inner cover and the outer cover are elongated members having a roughly U-shaped cross-section and an opening at the top. The inner cover is positioned in close contact with the inner surface of the outer cover, and the outer cover has a certain space between it and the inner cover. The aforementioned outer cover is characterized by having a front portion on the light-emitting surface side with a prism portion formed thereon, corner portions located at both ends of the front portion, and inclined portions rising from the corner portions.

2. The lighting fixture according to claim 1, wherein the space is a space with a substantially triangular cross-section enclosed by the vertical portion of the inner cover and the front portion and the inclined portion of the outer cover.

3. The lighting fixture according to claim 1 or 2, wherein the prism portion is elongated with a substantially triangular cross-section and has a top portion, a slanted portion, and a bottom portion, and is arranged in a plurality of rows substantially parallel to each other along the longitudinal direction of the main body between the corners of the front portion of the outer cover, and the top portion of the prism portion is located on the light-emitting surface side, and the bottom portion is located on the front portion of the outer cover.

4. The main body is a flat plate in the shape of a roughly rectangular parallelepiped, and has roughly L-shaped projections at both ends in the longitudinal direction that protrude toward the light-emitting surface. The outer cover has a substantially L-shaped edge, The lighting fixture according to claim 1 or 2, wherein the protruding portion of the main body and the edge portion of the outer cover are fixed to the main body by engaging with each other.

5. The aforementioned mounting component comprises a pair of retaining members formed by bending a single plate-shaped member and provided on the back of the main body, The lighting fixture according to claim 1 or 2, further comprising a pair of locking members provided on the surface of the mounting part facing the back of the main body, each facing the holding member.

6. The lighting fixture according to claim 1 or 2, wherein the outer cover has a plurality of protrusions on the surface of the edge portion.

7. The lighting fixture according to claim 1 or 2, wherein the main body comprises a circuit board on which a plurality of light-emitting elements are mounted on the front side and a power supply circuit located on the rear side.

8. The lighting fixture according to claim 7, wherein the substrate is a long, flat plate, and is provided with multiple locking portions on its side with a narrow side width, a substrate guide is placed on the locking portions, and the substrate is fixed to the main body.

9. The lighting fixture according to claim 4, wherein the main body and the outer cover are arranged such that there is a space between the protruding portion of the main body and the wall portion of the outer cover through which light emitted from the light source can enter.

10. The lighting fixture according to claim 1 or 2, wherein the angle of inclination between the inclined portion and the front portion of the outer cover is 25° to 80°.

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