JP2020149872A - Luminaire - Google Patents

Abstract

To provide a luminaire that can increase an amount of light emitted from the luminaire while restraining an increase in a maximum luminance.SOLUTION: A luminaire according to one embodiment comprises a light source, an appliance body housing the light source, a cylindrical frame body fixed to the appliance body, and a translucent panel fixed to the frame body, and covering an opening of the frame body. The translucent panel includes a panel body for transmitting light of the light source, and a wall part erected on a peripheral edge of the panel body, extending into the cylinder of the frame body, and fixed to the frame body. The wall part has a higher reflectance for the light from the light source than the panel body.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to luminaires, and more particularly to ceiling-embedded luminaires with translucent panels.

Conventionally, a tubular fixture body for accommodating a light source and a tubular fixture body fixed to the fixture body and whose inner surface functions as a reflecting surface are provided, and most of the fixtures are inserted into an embedded hole formed in the ceiling. Lighting fixtures that can be mounted on the ceiling in a state are widely known. Such luminaires are commonly referred to as downlights. Further, there is known a ceiling-embedded lighting fixture that is arranged so as to cover an opening portion of a device that emits light and has a translucent panel recessed inside the fixture (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2015-213052

By the way, in a lighting fixture provided with a translucent panel, it is required to keep the maximum brightness low in order to make it difficult to feel glare when looking up at the fixture from directly below. On the other hand, it is also required to increase the amount of light emitted from the fixture to improve the light extraction efficiency. An object of the present disclosure is to provide a luminaire capable of increasing the amount of light emitted from the luminaire while suppressing an increase in maximum brightness.

The lighting fixture according to one aspect of the present disclosure is formed in a tubular shape having at least one end open in the axial direction with a light source, and is formed in a tubular shape with both ends open in the axial direction and a main body of the fixture accommodating the light source. It includes a frame body fixed to the main body and a translucent panel fixed to the frame body and covering the opening of the frame body. The translucent panel includes a panel body that transmits light from the light source, and a wall portion that stands on the periphery of the panel body, extends into the cylinder of the frame body, and is fixed to the frame body. The wall portion has a higher reflectance to the light of the light source than the panel main body.

According to the lighting fixture which is one aspect of the present disclosure, it is possible to increase the amount of light emitted from the fixture while suppressing the increase in the maximum brightness.

It is a perspective view of the lighting equipment which is an example of an embodiment. It is an exploded perspective view of the lighting fixture which is an example of an embodiment. FIG. 5 is a sectional view taken along line AA in FIG. It is a perspective view of the translucent panel which is an example of an embodiment. It is an enlarged view of part B in FIG. It is sectional drawing of the translucent panel which is another example of Embodiment.

Hereinafter, an example of the embodiment of the lighting fixture according to the present disclosure will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a luminaire 10 which is an example of an embodiment, and FIG. 2 is an exploded perspective view of the luminaire 10. FIG. 3 is a sectional view taken along line AA in FIG.

As illustrated in FIGS. 1 to 3, the luminaire 10 includes a light emitting module 11 including a light source, an instrument main body 20 formed in a tubular shape having one end open in the axial direction and accommodating the light emitting module 11, and both ends in the axial direction. The frame 30 is formed in an open tubular shape and is fixed to the instrument body 20. Further, the luminaire 10 includes a translucent panel 40 that is fixed to the frame 30 and covers the opening of the frame 30. In the present embodiment, the first reflective member 26 is arranged in the cylinder of the instrument main body 20, and the frame body 30 is fixed to the instrument main body 20 via the second reflective member 50.

The luminaire 10 is a ceiling-embedded luminaire that is inserted into a ceiling embedding hole with the opening P of the frame 30 covered with the translucent panel 40 facing vertically downward. The luminaire 10 is generally called a downlight. In the present specification, for convenience of explanation, the vertically upper side of the luminaire 10 is referred to as “upper” and the vertically lower side is referred to as “lower” with the luminaire 10 mounted on the ceiling.

The luminaire 10 is mounted on a horizontal ceiling, for example, but can also be mounted on a ceiling that is inclined with respect to the horizontal direction and the vertical direction. The ceiling to which the lighting fixture 10 is attached may be a portion that divides the upper part of the building space, and may be, for example, a ceiling such as an entrance porch or a terrace. The lighting fixture according to the present disclosure may be attached to a duct rail or the like, or may be attached to a ceiling or the like in a form other than embedding in the ceiling.

A plurality of mounting springs (not shown) for fixing the fixture to the ceiling are generally fixed to the luminaire 10. The luminaire 10 is fixed to the ceiling by the mounting spring abutting around the embedded hole in the ceiling in the space behind the ceiling. In the present embodiment, the fixing portions 33 of the mounting springs are formed at three positions of the base portion 31 of the frame body 30.

The lighting fixture 10 has a structure in which the fixture main body 20, the second reflective member 50, the translucent panel 40, and the frame 30 are arranged in this order from the top. The light from the light source passes through the inside of the instrument main body 20 and the second reflective member 50, passes through the translucent panel 40, and is emitted to the outside of the apparatus through one opening P of the frame body 30. In order to reduce the maximum brightness of the luminaire 10, it is preferable that the translucent panel 40 diffuses and transmits the light of the light source.

The instrument body 20 has a tubular portion with one end (lower end) open in the axial direction. The tubular portion of the instrument body 20 includes a side wall portion 21 formed in a substantially cylindrical shape and a top surface portion 22 formed at the other end (upper end) of the side wall portion 21 in the axial direction, and exhibits a bottomed substantially cylindrical shape. .. Further, the appliance main body 20 has a heat radiation fin 23 that stands upright on the top surface portion 22. In the example shown in FIG. 1, a plurality of heat radiation fins 23 are formed radially. The instrument body 20 is generally made of aluminum or a metal containing iron as a main component. The shape of the instrument body 20 is not limited to the shape illustrated in FIG. 1 and the like. For example, the cross section of the tubular portion perpendicular to the axial direction may be rectangular and has no heat radiation fins. May be good.

A light emitting module 11 including a light source is arranged in the cylinder of the instrument main body 20. Further, in the cylinder of the instrument main body 20, a holder 25 for holding the light emitting module 11, a first reflecting member 26 for reflecting light (light from a light source) emitted from the light emitting module 11, and a lens 27 are provided. May be good. In the present embodiment, the lens 27 is fixed to the first reflective member 26, and the first reflective member 26 is fixed to the holder 25. The holder 25 is screwed to, for example, the inner surface of the top surface portion 22.

The light emitting module 11 has, for example, a light source and a substrate on which the light source is mounted. The light emitting element constituting the light source is not particularly limited, but is preferably a semiconductor light emitting element such as an LED (Light Emitting Diode). The light emitting device may be sealed with a sealing layer containing a phosphor. The light emitting module 11 may have a heat radiating plate that diffuses the heat of the light source. The light emitting module 11 is arranged in a state where the substrate or the heat radiating plate is in contact with the inner surface of the top surface portion 22 by, for example, the holder 25.

The first reflective member 26 is a tubular body having both ends open in the axial direction, and has a larger diameter at the lower end on the translucent panel 40 side than the upper end on the light emitting module 11 side. The first reflective member 26 has a divergent shape whose diameter increases toward the lower end. The light from the light source passes through the inside of the cylinder of the first reflecting member 26 and travels in the direction of the translucent panel 40. The inner peripheral surface of the first reflecting member 26 functions as a reflecting surface that reflects the light of the light source. The first reflective member 26 is, for example, a resin member, and on its inner peripheral surface, a coating film containing a filler such as a white pigment, a metal layer formed by vapor deposition, plating, sputtering, or the like, or an inorganic compound layer. A film that enhances the reflectance of light such as is may be formed.

The lens 27 is an optical member that controls the light of a light source, and has, for example, a substantially perfect circular light emitting surface. In the example shown in FIG. 3, a convex portion (Fresnel) is formed in an annular shape on the peripheral edge of the light incident surface of the lens 27 facing the light source side. Further, the lens 27 is fixed to the first reflecting member 26 in a state of being inserted into the cylinder of the first reflecting member 26. The first reflective member 26 may be formed with a claw portion, and the lens 27 may be formed with a recess or a hole into which the claw portion is fitted. The lens 27 is made of a highly transparent resin such as acrylic resin or polycarbonate, or glass.

The lens 27 preferably has a function of spreading the light of the light source. By spreading the light outward in the radial direction of the fixture body 20 by using the lens 27, the amount of light emitted directly under the lighting fixture 10 can be reduced to reduce the maximum brightness. The light from the light source is reflected directly on the lens 27 or on the inner peripheral surface of the first reflecting member 26, is incident on the lens 27, spreads outward in the radial direction of the instrument body 20, and is emitted from the lens 27. By reflecting the light by the convex portion, the light that hits the first reflecting member 26 is reduced, and by diverging the light at an angle that does not increase the light that hits the second reflecting member 50 too much, the illumination is reduced while reducing the maximum brightness. The amount of light emitted from the appliance 10 can be increased.

The lens 27 has, for example, a shape in which the central portion of the light incident surface is recessed. By making the light incident surface or the light emitting surface of the lens 27 concave, the light of the light source can be expanded and the maximum brightness can be reduced. The shape of the lens 27 is not limited to that illustrated in FIG. 3, as long as the light from the light source can be spread. A conventionally known lens such as a Fresnel lens can be applied to the lens 27.

A cable insertion hole 24 for passing a cable (not shown) for supplying electric power to the light emitting module 11 is formed in the side wall portion 21 of the instrument main body 20. The luminaire 10 generally includes a power supply unit (not shown) that supplies power to the light emitting module 11. The cable connected to the power supply unit is drawn into the instrument main body 20 from the cable insertion hole 24 and connected to the light emitting module 11.

The second reflective member 50 is a tubular body having both ends open in the axial direction, and is fixed to the lower end of the instrument main body 20. In the present embodiment, the instrument main body 20 and the second reflective member 50 are connected by using a ring-shaped joint 28 and a screw 29. A plurality of boss portions 52 are provided on the upper portion of the second reflective member 50, and through holes through which the screws 29 are passed are formed in the instrument main body 20 and the joint 28 at positions overlapping the boss portions 52. The joint 28 is fitted to the upper end of the second reflective member 50, and the instrument body 20 and the second reflective member 50 are screwed via the joint 28.

The second reflective member 50 has a larger diameter at the lower end on the frame 30 side than the upper end on the instrument main body 20 side, and has a divergent shape that expands toward the lower end. The diameter of the upper end of the second reflective member 50 is substantially the same as the diameter of the lower end of the instrument body 20, and the diameter of the lower end of the second reflective member 50 is substantially the same as the diameter of the upper end of the frame 30. That is, the diameter of the frame 30 is larger than the diameter of the instrument body 20. Further, a flange portion 51 protruding outward in the radial direction is formed at the lower end portion of the second reflective member 50. In the present embodiment, the frame body 30 and the second reflective member 50 are connected by using the flange portion 51 and the screw 53.

The second reflective member 50 is, for example, a metal member, and on its inner peripheral surface, a coating film containing a filler such as a white pigment, a metal layer formed by vapor deposition, plating, sputtering, or the like, or an inorganic compound layer. A film that enhances the reflectance of light such as the above may be formed. Alternatively, the inner peripheral surface of the second reflective member 50 may be mirror-finished. The inner peripheral surface of the second reflecting member 50 functions as a reflecting surface that reflects the light of the light source. The light emitted from the lens 27 passes through the cylinder of the second reflecting member 50 and is reflected directly to the translucent panel 40 or on the inner peripheral surface of the second reflecting member 50 and is incident on the translucent panel 40. ..

As described above, the frame body 30 is a tubular body having both ends open in the axial direction, and is fixed to the instrument main body 20 via the second reflective member 50. The frame 30 is arranged at the lower end of the luminaire 10, and the light from the light source is emitted to the outside of the device through the opening P of the frame 30. The frame body 30 has a substantially cylindrical base portion 31 and a flange portion 32 projecting outward in the radial direction from the lower end portion of the base portion 31. A plurality of boss portions (not shown) are formed in the base portion 31, and the flange portion 51 of the second reflective member 50 arranged on the upper end surface of the base portion 31 is screwed. The flange portion 32 is formed in a ring shape so as to surround the opening P, and is arranged along the ceiling surface at the periphery of the embedding hole with the upper portion of the luminaire 10 inserted into the ceiling space from the embedding hole.

The translucent panel 40 is fixed to the frame body 30 and covers the entire opening P of the frame body 30. Since the translucent panel 40 covers the entire opening P, the light from the light source always passes through the translucent panel 40 and is emitted to the outside of the device. The translucent panel 40 has, for example, a function of diffusing and transmitting light. The translucent panel 40 may be a substantially flat panel, but from the viewpoint of light diffusivity and the like, when the luminaire 10 is viewed from below, it is recessed inside the luminaire 10, that is, toward the light source side. It preferably has a shape.

In the present embodiment, the translucent panel 40 is largely recessed inside the luminaire 10, and the upper end of the translucent panel 40 is located in the cylinder of the second reflective member 50 beyond the upper end of the frame 30. There is. Further, the lower ends of the first reflective member 26 and the lens 27 are also located in the cylinder of the second reflective member 50 beyond the lower ends of the side wall portion 21. A predetermined space exists between the translucent panel 40 and the second reflective member 50, and between the translucent panel 40 and the lens 27.

Hereinafter, the attachment structure of the translucent panel 40 to the translucent panel 40 and the frame 30 will be described in detail with reference to FIGS. 4 and 5. FIG. 4 is a perspective view of the translucent panel 40 which is an example of the embodiment, and FIG. 5 is an enlarged view of part B in FIG.

As illustrated in FIGS. 3 to 5, the translucent panel 40 is erected on the periphery of the panel main body 41 that transmits the light of the light source and the peripheral edge of the panel main body 41, extends into the cylinder of the frame body 30, and extends into the frame body. It has a wall portion 42 fixed to 30. As will be described in detail later, the wall portion 42 is configured to have a higher reflectance to the light of the light source than the panel main body 41. The panel body 41 may be flat, but preferably has a shape bulging toward the light source. When the lighting fixture 10 is viewed from below, it can be said that the panel body 41 is recessed toward the light source (particularly see FIG. 2).

The translucent panel 40 is fixed to the frame 30 in a state of being inserted into the cylinder of the frame 30. The opening P of the frame body 30 and the translucent panel 40 have a perfect circular shape when viewed from the bottom surface (when viewed from below) of the luminaire 10. The translucent panel 40 fits tightly into the opening P and covers the entire opening P. The translucent panel 40 may be made of glass, but is preferably made of resin from the viewpoint of moldability, light weight and the like.

The panel body 41 is formed in a dome shape by bulging as a whole so as to be convex toward the light source. The panel body 41 extends beyond the upper end of the frame 30 into the cylinder of the second reflective member 50 within a range that does not contact the inner peripheral surface of the second reflective member 50 and the light emitting surface of the lens 27. The panel body 41 is curved so that, for example, most or all of it is convex upward. The panel body 41 is preferably arranged so that the top, which is the most bulging portion, coincides with the central axis α of the luminaire 10. Further, in the present embodiment, the light emitting module 11 is arranged on the central axis α, and each member is in a state where the central axis α and the central axes of the instrument main body 20, the second reflecting member 50, and the frame body 30 are substantially aligned with each other. Is placed.

The panel body 41 is preferably made of a resin having a high light transmittance. Examples of the resin constituting the panel body 41 include acrylic resin, polycarbonate, polyolefin, polyester, and silicone resin. The panel body 41 is, for example, a milky white panel that diffuses and transmits the light of a light source. A light diffusing filler such as resin particles may be dispersed in the resin constituting the panel body 41.

The wall portion 42 is a portion used for fixing to the frame body 30, and extends in the same direction as the panel main body 41 becomes convex. The wall portion 42 may be formed only on a part of the peripheral edge of the panel main body 41, but from the viewpoint of improving the light extraction efficiency, preventing light leakage, etc., the wall portion 42 surrounds the panel main body 41 in the circumferential direction. It is preferably formed in a cylindrical shape. In the example shown in FIG. 3, the wall portion 42 is arranged so as to be in contact with the inner peripheral surface of the base portion 31 of the frame body 30 and covers the entire inner peripheral surface.

In the present embodiment, the base portion 31 of the frame body 30 includes an inner wall 34, an outer wall 35, and a groove 36 formed between them. As illustrated in FIG. 3, at least a part of the inner wall 34 forming the inner peripheral surface of the base portion 31 is formed at a height lower than the outer wall 35 forming the outer peripheral surface. The base portion 31 has a fixing portion 33 of a mounting spring formed by dividing the outer wall 35 at three points. The inner wall 34 is formed over the entire length of the frame 30 in the circumferential direction. Further, a boss portion to which a screw 53 for connecting the frame body 30 and the second reflective member 50 is fastened may be formed between the inner wall 34 and the outer wall 35.

At the upper end of the wall portion 42, a claw portion 43 protruding outward in the radial direction of the cylindrical wall portion 42, that is, in the direction opposite to the panel main body 41 is formed. In the example shown in FIG. 4, a plurality of claw portions 43 are formed at equal intervals in the circumferential direction of the wall portion 42. In the present embodiment, the translucent panel 40 is fixed to the frame 30 by hooking the claw portion 43 on the upper end of the base portion 31, more specifically, the portion of the inner wall 34 whose height is lower than the outer wall 35. .. The wall portion 42 is formed at a constant height in the circumferential direction, for example, higher than the height of the inner wall 34.

The translucent panel 40 is fixed to the frame 30 in a state where the wall portion 42 is in contact with the inner peripheral surface of the inner wall 34 and the claw portion 43 is hooked on the upper end of the inner wall 34. The translucent panel 40 is arranged in the cylinder of the frame body 30 and the second reflective member 50 so as not to protrude downward from the lower end of the frame body 30. In the present embodiment, the locking ring 37 is attached so as to sandwich the inner wall 34 and the wall portion 42 on which the claw portion 43 is formed so as to sandwich the upper portion of the inner wall 34 and the upper portion of the wall portion 42. By using the locking ring 37, the translucent panel 40 can be firmly fixed to the frame body 30.

The locking ring 37 has an inner claw 38 and an outer claw 39, and the outer claw 39 is inserted into the groove 36 of the base portion 31 so that the inner claw 38 is caught on the surface of the wall portion 42 facing the light source side. It is installed like this. The locking ring 37 has a substantially U-shaped cross section at the portion where the inner claw 38 and the outer claw 39 are formed. Further, the locking ring 37 is arranged at substantially the same height as the outer wall 35, and the flange portion 51 of the second reflective member 50 is arranged on the outer wall 35 and the locking ring 37. By screwing the flange portion 51 to the base portion 31, the locking ring 37 and the claw portion 43 are pressed from above, and the fixed state of the translucent panel 40 is stabilized.

As described above, the reflectance of the wall portion 42 with respect to the light of the light source (hereinafter, may be simply referred to as “reflectance”) is at least higher than the reflectance of the panel body 41, and the reflection on the inner peripheral surface of the base portion 31. It may be higher than the rate. By increasing the reflectance of the wall portion 42, as shown in FIG. 5, the light that hits the wall portion 42 can be efficiently reflected in the direction of the panel body 41, and is emitted from the luminaire 10. The amount of light can be increased. In other words, the wall portion 42 is preferably configured so that the transmittance of the wall portion 42 with respect to the light of the light source is lower than that of the panel main body 41. The wall portion 42 has a higher total light reflectance than the panel body 41. Further, the wall portion 42 has a lower total light transmittance than the panel main body 41.

The total light reflectance of the wall portion 42 is preferably high, for example, 80% to 95%. The wall portion 42 does not have to transmit the light of the light source, and the total light transmittance may be 0%. The total light transmittance of the panel body 41 is preferably high, for example, 50% to 80%. Here, the total light transmittance and the total light reflectance of the translucent panel 40 are measured based on JIS K7375 (Plastic-how to obtain the total light transmittance and the total light reflectance).

The reflectance of only a part of the wall portion 42 may be higher than the reflectance of the panel body 41. The wall portion 42 may have, for example, a reflective layer that increases the reflectance of light from the light source on a surface facing the light source side (hereinafter, referred to as “first surface”). Examples of the reflective layer include a coating film containing a filler such as a white pigment, a metal layer formed by vapor deposition, plating, sputtering, or the like, and a coating film such as an inorganic compound layer, as in the case of the first reflective member 26. Can be mentioned. It is preferable that the reflectance of at least the first surface of the wall portion 42 is higher than the reflectance of the first surface of the panel body 41.

In the present embodiment, the panel body 41 and the wall portion 42 are integrally molded, and the wall portion 42 is made of a material having a higher reflectance to the light of the light source than the translucent panel 40. That is, the entire surface including the first surface of the wall portion 42 is configured to have a higher reflectance than the panel main body 41. In this case, the translucent panel 40 can be manufactured by two-color molding using two types of resins having different reflectances. For example, the translucent panel 40 can be manufactured by injection molding using two types of resins in which the reflectance of the resin constituting the panel body 41 <the reflectance of the resin constituting the wall portion 42.

Different types of resins such as acrylic resin and silicone resin may be used as the resins constituting each of the panel body 41 and the wall portion 42, and the composition is such that the same type of acrylic resin has different reflectances. May be changed. Further, the same resin may be used, and the reflectances of the panel main body 41 and the wall portion 42 may be different by changing the presence or absence of additives, the type and amount of additives, and the like. Alternatively, the translucent panel 40 may be manufactured by joining the panel main body 41 having a low reflectance and the wall portion 42 having a high reflectance, which are separately molded, by using an adhesive or the like.

As described above, according to the lighting fixture 10 having the above-described configuration, it is possible to increase the amount of light emitted from the fixture while suppressing the increase in the maximum brightness. By using the translucent panel 40 that diffuses and transmits light, the light of the light source can be diffused in the direction away from the central axis α, and the amount of light emitted directly under the luminaire 10 is reduced to reduce the maximum brightness. it can. Further, the maximum brightness can be further reduced by spreading the light by using the lens 27.

As illustrated in FIG. 5, the light of the light source emitted from the lens 27 passes through the panel body 41 of the translucent panel 40 and is emitted from the opening P, but a part of the light of the light source is emitted from the wall portion 42. It may hit. At this time, if the reflectance of the wall portion 42 is high, light can be efficiently reflected in the direction of the panel body 40. Since the wall portion 42 has a reflectance higher than that of the panel main body 40 and can efficiently reflect light, the amount of light emitted from the opening P can be increased.

When the reflectance of the wall portion 42 is low, a part of the light of the light source passes through the wall portion 42 and hits the inner peripheral surface of the frame body 30, but in that case, the surface on which the light is reflected increases, and the frame body 30 also receives light. Since the light reflected by the inner peripheral surface of the above is diffused when passing through the wall portion 42, the light cannot be efficiently extracted. In the present embodiment, since the wall portion 42 having high reflectance covers the entire inner peripheral surface of the frame body 30, light is reflected by the wall portion 42 in the direction of the translucent panel 40, and the inside of the frame body 30. The exposure of light to the peripheral surface is suppressed.

The above-described embodiment can be appropriately redesigned as long as the object of the present disclosure is not impaired. For example, in the above-described embodiment, the frame body 30 is fixed to the instrument body 20 via the second reflective member 50, but the frame body may be directly fixed to the instrument body 20. Also, the luminaire does not have to have a lens.

As illustrated in FIG. 6, unevenness 44 (prism) for light diffusion that spreads the light of the light source may be formed on the first surface of the panel body 41 facing the light source side. The unevenness 44 is preferably formed on or near the most bulging top of the panel body 41. In other words, the unevenness 44 is preferably formed in or near the center of the panel body 41 through which the central axis α of the luminaire 10 passes. By forming the unevenness 44 on the panel main body 41, the light of the light source incident on the panel main body 41 can be spread toward the peripheral edge of the panel main body 41, and the amount of light emitted directly under the luminaire 10 can be reduced to the maximum. Brightness can be reduced.

The unevenness 44 may be formed irregularly, but is preferably formed regularly. The unevenness 44 shown in FIG. 6 is formed by regularly forming convex portions having a substantially triangular cross section. A plurality of convex portions or concave portions forming the unevenness 44 may be formed concentrically. The unevenness 44 includes, for example, a triangular convex portion in a cross-sectional view including a vertex that substantially coincides with the central axis α, and a plurality of annular convex portions centered on the convex portion are formed concentrically.

10 Lighting equipment, 11 Light emitting module, 20 Equipment body, 21 Side wall, 22 Top surface, 23 Heat dissipation fin, 24 Cable insertion hole, 25 Holder, 26 First reflective member, 27 Lens, 28 Joint, 29,53 Screw, 30 Frame, 31 Base, 32 Flange, 33 Fixed, 34 Inner Wall, 35 Outer Wall, 36 Groove, 37 Locking Ring, 38 Inner Claw, 39 Outer Claw, 40 Translucent Panel, 41 Panel Body, 42 Wall , 43 Claw, 44 Concavo-convex, 50 Second reflective member, 51 Flange, 52 Boss

Claims (5)

Light source and
An instrument body that is formed in a tubular shape with at least one end open in the axial direction and houses the light source.
A frame body that is formed in a tubular shape with both ends open in the axial direction and is fixed to the instrument body.
A translucent panel fixed to the frame and covering the opening of the frame,
With
The translucent panel is
A panel body that transmits light from the light source and a wall portion that stands on the periphery of the panel body, extends into the cylinder of the frame body, and is fixed to the frame body.
The wall portion is a lighting fixture having a higher reflectance to light from the light source than the panel body. The panel body and the wall portion are integrally molded, and the panel body and the wall portion are integrally molded.
The luminaire according to claim 1, wherein the wall portion is made of a material having a higher reflectance to light from the light source than the panel main body. The lighting fixture according to claim 1 or 2, wherein the panel body has a shape bulging toward the light source. The lighting fixture according to any one of claims 1 to 3, wherein unevenness for light diffusion that spreads the light of the light source is formed on the surface of the panel body facing the light source. The lighting fixture according to any one of claims 1 to 4, wherein the fixture main body is provided with a lens that spreads the light of the light source.

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