JP2017174627A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture which has suppressed intrusion of insects.SOLUTION: A lighting fixture 1 includes: a light source part 10; a bottomed cylindrical fixture body 20 having an opening 201, and having the light source part 10 at a base bottom part 200a; a reflection member 30 which is a cylindrical member having a first opening end part 301 and a second opening end part 302, and in which the first opening end part 301 is arranged inside the fixture body 20; a translucent member 40 for blocking the second opening end part 302; and a seal member 50 having a first annular part 51 for covering a boundary between the second opening end part 302 and the translucent member 40 across the whole circumference, a second annular part 52 extending from the first annular part 51 and for covering an outer edge part on the second opening end part 302 side in the translucent member 40 across the whole circumference and a third annular part 53 having a free end 531, standing from the first annular part 51 and coming into contact with an inner wall of the fixture body 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lighting fixture.

  Conventionally, as a lighting fixture, for example, a lighting fixture that emits light downward like a downlight is known (for example, Patent Document 1).

  This type of lighting fixture is a light source unit fixed to the fixture main body, a power source unit that is installed outside the fixture main body and that lights the light source unit, and for electrically connecting the light source unit and the power source unit. Power line.

  The lighting fixture disclosed in Patent Document 1 includes a light source composed of an LED (Light Emitting Diode), a reflection member that reflects light emitted from the light source in a predetermined direction on a reflection surface of the inner surface, and the light source and the reflection. An instrument main body for supporting the member. Furthermore, the reflecting member has a locking claw, and is fixed by locking the lens member formed of a translucent material so as to block the emission port with the locking claw. With such a configuration, it becomes easy to arrange the light source so as to be surrounded by the instrument body, the reflecting member, and the lens member.

Japanese Patent Laying-Open No. 2015-088349

  However, there are cases in which insects enter the vicinity of the light source part through gaps generated between the reflecting member and the instrument main body, or at a portion of a locking claw for fixing the reflecting member and the lens member.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a lighting apparatus capable of suppressing insects from entering the vicinity of a light source.

  In order to achieve the above object, one aspect of a lighting fixture according to the present invention includes a light source portion, an opening portion, a bottomed cylindrical fixture body having the light source portion at a base portion, and a first opening end. A cylindrical member having a portion and a second opening end, wherein the first opening end is a reflecting member disposed inside the instrument body, a translucent member that closes the second opening end, and A first annular portion that covers the entire periphery of the boundary between the second opening end and the translucent member; and an outer edge portion of the translucent member that extends from the first annular portion on the second opening end side. A second annular portion that covers the entire circumference, and a seal member that has a free end and a third annular portion that stands from the first annular portion and contacts the inner wall of the instrument body. To do.

  ADVANTAGE OF THE INVENTION According to this invention, the lighting fixture which can suppress that an insect invades around a light source can be provided.

FIG. 1 is an external perspective view of a lighting fixture according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the lighting fixture according to the embodiment of the present invention. FIG. 3 is a cross-sectional view of the lighting fixture according to the embodiment of the present invention. FIG. 4 is an enlarged view of a main part of a cross-sectional view of the lighting apparatus according to the embodiment of the present invention. FIG. 5 is a cross-sectional view of a lighting fixture according to a comparative example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that each of the embodiments described below shows a preferred specific example of the present invention. Therefore, numerical values, shapes, materials, components, arrangement positions and connection forms of components, steps (steps) and order of steps, and the like shown in the following embodiments are examples and limit the present invention. It is not the purpose to do. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.

  Each figure is a schematic diagram and is not necessarily illustrated strictly. Moreover, in each figure, the same code | symbol is attached | subjected to the substantially same structure, The overlapping description is abbreviate | omitted or simplified.

(Embodiment)
First, the structure of the lighting fixture 1 which concerns on embodiment of this invention is demonstrated using FIGS. In each figure, a direction parallel to the optical axis J is a Z-axis direction, and two directions perpendicular to the optical axis J and perpendicular to each other are an X-axis direction and a Y-axis direction. In the present embodiment, the Z-axis direction is the vertical direction.

  The lighting fixture 1 includes a light source unit 10, a fixture body 20, a reflecting member 30, a translucent member 40, and a seal member 50. Hereinafter, each component of the lighting fixture 1 is demonstrated.

[Light source]
The light source unit 10 is a light source of the lighting fixture 1. In the present embodiment, the light source unit 10 is a light emitting module having an LED. The light source unit 10 emits white light, for example.

  As shown in FIG. 2, the light source unit 10 has a COB (Chip On Board) structure, and includes a substrate 100 and a light emitting unit 101.

  The substrate 100 is a mounting substrate for mounting a plurality of LEDs, and is, for example, a ceramic substrate, a resin substrate, an insulating-coated metal base substrate, or the like. The substrate 100 is formed with a pair of electrode terminals (a positive electrode terminal and a negative electrode terminal) for receiving a direct current for causing the LED to emit light from the outside.

  The light emitting unit 101 includes a plurality of LEDs mounted on the substrate 100 and a sealing member that seals the plurality of LEDs. In this embodiment, the LED is a bare chip that emits blue light. Note that at least one LED may be disposed on the substrate 100.

  As the sealing member, for example, a translucent resin is used. The sealing member in this Embodiment contains the fluorescent substance as a wavelength conversion material which wavelength-converts the light from LED.

  In the present embodiment, light emitted from the LED of the light emitting unit 101 (blue light) and fluorescence (yellow light) emitted from a phosphor excited by the light are synthesized from the light source unit 10. Light (white light) is emitted.

In the present embodiment, the sealing member seals all the LEDs at the same time, but is not limited thereto. For example, a plurality of LEDs may be sealed in a line for each column, or each LED may be individually sealed.

[Equipment body]
The fixture body 20 is the main body of the bottomed cylindrical lighting fixture 1. In the present embodiment, the instrument main body 20 includes a base portion 200 a having a heat radiating fin 202 and a cylindrical portion 200 b having an opening 201.

  The base part 200a is a part to which the light source part 10 is attached. The cylindrical part 200 b is a cylindrical part that stands up from the periphery of the base part 200 a and surrounds the light source part 10.

  The opening 201 is surrounded with an open end of the cylindrical portion 200b opposite to the base portion 200a as an outer edge.

  The plurality of heat radiating fins 202 are portions that radiate heat generated by the light source unit 10. The radiating fin 202 is, for example, a plate shape, and is erected on the back surface opposite to the surface where the cylindrical portion 200b of the base portion 200a is erected.

  The instrument main body 20 is good to be comprised with material with high heat conductivity, such as a metal material. The instrument body 20 is made of, for example, aluminum die casting.

[Mounting member]
The attachment member 21 is a member for attaching the light source unit 10 to the instrument body 20. The attachment member 21 includes a restriction portion 210 and an attachment locking portion 211.

  The restricting unit 210 restricts the position of the light source unit 10 in the direction perpendicular to the optical axis J (X-axis direction and Y-axis direction). The restricting portion 210 has a rectangular frame shape having an opening 212 at the center. The opening 212 formed at the center of the restricting portion 210 has a shape corresponding to the light source unit 10, and the light source unit 10 is disposed in the opening 212. The attachment member 21 is disposed on the base portion 200 a of the instrument main body 20 and is fixed to the instrument main body 20 by the connection member 22 and the screw 23.

  The attachment locking portion 211 is a portion that supports the reflection member 30 and locks the attachment locked portion 304 of the reflection member 30. In the present embodiment, the attachment member 21 includes two attachment locking portions 211. The attachment locking portion 211 has a substantially L-shaped shape, and a protrusion provided in an end portion of the attachment locking portion 211 and protruding in a direction away from the optical axis J is attached to the attachment locked portion 304. By being inserted, the attachment locking portion 211 locks the attachment locked portion 304.

  The attachment member 21 can be formed using, for example, a resin material such as polybutylene terephthalate (PBT) or polycarbonate (PC).

[Reflection member]
As shown in FIG. 3, the reflecting member 30 has a first opening end 301, a second opening end 302, an inner wall 303, and an upright portion 305, and the inner diameter and the outer diameter are the first opening end 301 from the first opening end 301. A cylindrical shape that increases toward the two opening end portions 302.

  The first opening end portion 301 is an end portion on the side where the light emitted from the light source unit 10 enters the reflecting member 30. The outer diameter of the first opening end 301 is smaller than the inner diameter of the opening 201 of the instrument body 20. The first opening end 301 is disposed on the base 200 a side inside the instrument body 20.

The second opening end portion 302 is an end portion on the side where the light incident from the first opening end portion 301 is emitted toward the translucent member 40. The inner diameter and outer diameter of the second opening end 302 are larger than the inner diameter and outer diameter of the first opening end 301, respectively. The second opening end portion 302 is disposed on the opening 201 side inside the instrument body 20.

  The inner wall 303 has a first opening end 301 and a second opening end 302 at both ends, and is configured such that the inner diameter gradually increases from the first opening end 301 toward the second opening end 302. Yes.

  The standing part 305 is disposed on the light source part 10 side of the inner wall 303 and is erected substantially in the optical axis J direction (Z-axis direction). The standing portion 305 is provided with an attachment locked portion 304 that is locked to the attachment locking portion 211. In the present embodiment, the attachment locked portion 304 is a through hole provided in the standing portion 305.

  The side portion of the reflecting member 30 on the second opening end portion 302 side has a locking portion 306 that locks the translucent member 40 to the second opening end portion 302. In the present embodiment, the reflecting member 30 includes three locking portions 306. The locking portion 306 includes, for example, a cutout portion 307 that is cut out in a rectangular shape from the second opening end portion 302, and a substantially L-shape that extends from the reflecting member 30 at a substantially central position of the cutout portion 307. And a hook portion 308 having a shape of A protrusion provided in an end portion of the hooking portion 308 and protruding in a direction approaching the optical axis J is hooked on the hooked portion 422 of the hooked portion 42, whereby the locking portion 306 causes the hooked portion 42 to move. Lock. For example, the locking portion 306 has a gap at the notch 307, and it is assumed that an insect enters through the gap.

  Note that at least a part of the light emitted from the light source unit 10 may be reflected on the inner surface of the inner wall 303. With such a configuration, the reflecting member 30 reflects the light emitted from the light source unit 10 toward the translucent member 40.

  The reflecting member 30 can be formed using a white resin material such as PBT or polycarbonate.

[Translucent member]
The translucent member 40 includes a panel 41 and a locked portion 42, and is a translucent member on which light emitted from the light source unit 10 enters. The translucent member 40 is disposed so as to cover the light source unit 10. Specifically, the translucent member 40 is provided so as to close the second opening end portion 302 of the reflecting member 30.

  The panel 41 is made of a material having translucency, for example. Specifically, the panel 41 can be formed of an acrylic resin such as polymethacrylsanmethyl (PMMA), a transparent resin material such as PC, or a glass material. The panel 41 is, for example, a Fresnel lens, but is not limited thereto.

  The locked portion 42 is disposed on the light source portion 10 side of the panel 41 and includes a translucent member standing portion 421 and a hooked portion 422. The translucent member standing part 421 is erected substantially in the optical axis J direction (Z-axis direction). The light transmitting member standing portion 421 is provided with a hooked portion 422 that is hooked by the hooking portion 308. In the present embodiment, the hooked portion 422 is a convex portion erected in the direction away from the optical axis J at the light source portion 10 side end of the translucent member erected portion 421. With such a configuration, the locking portion 306 locks the locked portion 42. In the vicinity of the locked portion 42 locked by the locking portion 306, a gap is generated between the reflecting member 30 and the translucent member 40 where insects can enter.

The panel 41 may be a flat plate panel or a dome shape that is curved so as to protrude forward. Moreover, the panel 41 may have a light distribution control function by having a lens. The panel 41 may have light diffusibility by forming dimples or the like on at least a part of the panel 41. By setting it as such a structure, the illumination intensity nonuniformity and color nonuniformity of the light radiate | emitted from the lighting fixture 1 can be suppressed.

[Seal member]
As shown in FIGS. 2 and 3, in the present embodiment, the seal member 50 includes a first annular portion 51, a second annular portion 52, and a third annular portion 53.

  The 1st annular part 51 has covered the boundary part of the 2nd opening end part 302 and the translucent member 40 over the perimeter. The boundary between the second opening end portion 302 and the translucent member 40 is blocked by the first annular portion 51 having such a configuration, so that insects can be prevented from entering the reflecting member 30 from the boundary. be able to.

  The second annular portion 52 extends from the first annular portion 51 and covers the outer edge portion of the translucent member 40 on the second opening end portion 302 side over the entire circumference. In the present embodiment, the seal member 50 and the reflection member 30 are in close contact with each other in part of the first annular portion 51 by frictional force, adhesive force, or the like. Further, the seal member 50 and the translucent member 40 are in close contact with each other at the second annular portion 52 by frictional force, adhesive force, or the like. With such a configuration, the reflecting member 30 and the translucent member 40 are fixed by the seal member 50. Therefore, for example, even if the locking part 306 and the locked part 42 are damaged in a state where the lighting fixture 1 is disposed so that the light transmitting member 40 is vertically downward, the light transmitting member 40 is dropped. Without being retained by the seal member 50.

  In the present embodiment, the end 54 of the first annular part 51 opposite to the end where the second annular part 52 extends is opposed to the second annular part 52. With such a configuration, the sealing member 50 has a structure in which the reflecting member 30 and the translucent member 40 are sandwiched. Such a structure makes it difficult to separate the reflecting member 30 and the translucent member 40.

  The third annular portion 53 is erected in a direction away from the optical axis J from the first annular portion 51, has a free end 531, and is in contact with the instrument body 20. In addition, it is preferable that the tool body 20 is in contact with the entire circumference of the third annular portion 53. With such a configuration, the gap between the reflecting member 30 and the instrument main body 20 can be blocked by the third annular portion 53, and insects can be prevented from entering.

  In the present embodiment, the free end 531 of the third annular portion 53 is in contact with the inner wall of the tubular portion 200b of the instrument body 20. By setting it as such a structure, the 3rd annular part 53 can block | close the clearance gap between the reflection member 30 and the instrument main body 20 efficiently.

  In the present embodiment, the third annular portion 53 protrudes from the portion in contact with the first annular portion 51 in an inclined direction toward the cylindrical portion 200b and the opening 201 of the instrument body 20, and the third annular portion 53 It is preferable that the free end 531 of the annular portion 53 faces the opening 201. With such a configuration, after assembling the reflecting member 30, the translucent member 40, and the sealing member 50, the reflecting member 30, the translucent member 40, and the sealing member 50 are attached to the instrument main body 20 from the opening 201 side. Even when assembled by insertion, the third annular portion 53 can efficiently close the gap between the reflecting member 30 and the instrument body 20. That is, in such an assembly process, a frictional force is applied to the third annular portion 53 so that the free end 531 moves toward the opening 201. Since the free end 531 is positioned in the direction in which the frictional force is applied, no crease or turning is generated in the third annular portion 53, and the gap between the reflecting member 30 and the instrument main body 20 can be efficiently blocked. .

In the present embodiment, the thickness of the third annular portion 53 is preferably smaller than the thickness of the first annular portion 51. By adopting such a configuration, the third annular portion 53 becomes highly elastic. After assembling the reflective member 30, the translucent member 40, and the seal member 50, when assembled by inserting the reflective member 30, the translucent member 40, and the seal member 50 into the instrument body 20 from the opening 201 side, The gap between the reflecting member 30 and the instrument body 20 can be filled with the third annular portion 53 more smoothly.

  Moreover, in this Embodiment, it is preferable that the sealing member 50 is an elastic member which has elasticity. Specifically, the seal member can be formed of silicon rubber or the like. By adopting such a configuration, the adhesion between the seal member 50, the instrument body 20, the translucent member 40, and the reflecting member 30 is improved, and the gap is reduced, so that insects can be more effectively prevented from entering. Moreover, the adhesion between the seal member 50 and the instrument main body 20 and the translucent member 40 increases, so that the instrument main body 20 and the translucent member 40 are more difficult to separate.

  The seal member 50 may be provided with a plurality of third annular portions 53 along the optical axis J direction. By setting it as such a structure, the clearance gap between the reflection member 30 and the instrument main body 20 can be filled reliably, and the invasion of an insect can be suppressed more effectively.

(Comparative example)
Next, a comparative example will be described with reference to FIG.

  1 A of lighting fixtures in this comparative example are the same structures except not having the sealing member 50 among the lighting fixtures 1 as described in the said embodiment.

  As shown in FIG. 4, in the lighting fixture 1 </ b> A, there is a space where insects can enter the locking portion 306. Insects are attracted by the light of the light source unit 10 and pass through a gap between the outer diameter of the panel 41 of the translucent member 40 and the inner diameter of the cylindrical portion 200b of the instrument body 20 as indicated by a broken line arrow. . The insect that has passed invades the space surrounded by the reflecting member 30 and the translucent member 40 from the gap between the locking portions 306.

  As shown in FIG. 4, in the lighting fixture 1 </ b> A, there is a gap between the fixture main body 20 and the attachment member 21 and the reflection member 30. Insects are attracted by the light from the light source unit 10 and pass through the gap between the outer diameter of the panel 41 of the light transmitting member 40 and the inner diameter of the cylindrical portion 200b of the instrument body 20 as indicated by a dashed line arrow. The insect that has passed invades the space surrounded by the reflecting member 30 and the translucent member 40 from the gap formed between the instrument main body 20 and the mounting member 21 and the reflecting member 30.

  Insects that have entered the space surrounded by the reflecting member 30 and the translucent member 40 through the path as described above gather around the light source unit 10 and then become dead bodies and adhere to the panel 41 of the translucent member 40. The appearance of the luminaire 1A is particularly impaired when the light source unit 10 is turned on due to the attachment of insect dead bodies.

(Evaluation)
In said comparative example, the external appearance of 1 A of lighting fixtures is impaired by an insect invading from the some clearance gap in 1 A of lighting fixtures.

  On the other hand, in the above-described embodiment, invasion of insects is suppressed by closing the gap of the locking portion 306 shown in FIG. 4 with the first annular portion 51 of the seal member 50 in the above comparative example. Can do. Moreover, the penetration | invasion of an insect is suppressed by closing the clearance gap between the outer diameter of the panel 41 of the translucent member 40 shown in FIG. 4, and the cylindrical part 200b inner diameter of the instrument main body 20 with the 3rd annular part 53 of the sealing member 50. be able to.

  In this Embodiment, the lighting fixture 1 has the light source part 10, the opening part 201, the bottomed cylindrical instrument main body 20 which has the light source part 10 in the base part 200a, the 1st opening edge part 301, and the 1st. A cylindrical member having two open end portions 302, the first open end portion 301 is a reflecting member 30 disposed inside the instrument body 20, the translucent member 40 closing the second open end portion 302, A first annular portion 51 that covers the entire boundary of the boundary between the two opening end portions 302 and the translucent member 40, and an outer edge of the translucent member 40 on the second opening end portion 302 side that extends from the first annular portion 51. A second annular portion 52 that covers the entire circumference, and a sealing member 50 having a third annular portion 53 that has a free end 531 and that stands up from the first annular portion 51 and contacts the inner wall of the instrument body 20; Is provided.

  With such a configuration, the first annular portion 51 closes the boundary between the second opening end portion 302 and the translucent member 40, so that insects enter the reflecting member 30 from the boundary. Can be prevented. Further, for example, even when the locking portion 306 and the locked portion 42 are damaged in a state where the lighting fixture 1 is arranged so that the light transmitting member 40 is vertically downward, the light transmitting member 40 is dropped. Without being retained by the seal member 50. Therefore, for example, even if the locking part 306 and the locked part 42 are damaged in a state where the lighting fixture 1 is disposed so that the light transmitting member 40 is vertically downward, the light transmitting member 40 is dropped. Without being retained by the seal member 50.

(Other)
As described above, the light emitting device according to the present invention has been described based on the embodiments and the modifications. However, the present invention is not limited to the above embodiments.

  For example, in the above embodiment, the light source unit 10 uses a COB type LED, but other light emitting elements may be used. For example, an SMD (Surface Mount Device) type LED may be used. Moreover, you may use other solid light emitting elements, such as an organic EL (Electro Luminescence) element and a semiconductor laser, or light sources other than a solid light emitting element.

  Moreover, in the said embodiment, although the light source part 10 used the white light source which used the bare chip of blue LED, the light emission from the light source part 10 may be monochromatic visible lights, such as blue, green, and red. .

  In the above embodiment, the seal member 50 may not be an elastic member. For example, after the sealing member 50 is made of an elastic thermosetting resin or a photocurable resin and installed between the instrument main body 20 and the reflecting member 30, it is cured through heat or light. Any member may be used. As the curable resin, for example, an acrylic resin that undergoes radical polymerization can be used. Moreover, you may form with the material with small elasticity.

  The thickness of the seal member 50 may be substantially constant, for example, about 1 mm.

  Further, a locking portion that locks the reflecting member 30 and the translucent member 40 is formed in the translucent member 40, and a locked portion that locks the reflecting member 30 and the translucent member 40 is formed on the reflecting member 30. It may be formed. Also in this case, the first annular portion 51 may be configured to cover the entire boundary of the boundary between the second opening end portion 302 and the translucent member 40.

  In addition, the form obtained by making various modifications conceived by those skilled in the art to the embodiment, and the form realized by arbitrarily combining the components and functions in the embodiment without departing from the gist of the present invention. It is included in the present invention.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 10 Light source part 20 Instrument main body 200a Base part 201 Opening part 30 Reflective member 301 1st opening edge part 302 2nd opening edge part 40 Translucent member 50 Seal member 51 1st annular part 52 2nd annular part 53 3rd Annular part 531 Free end

Claims (5)

A light source unit;
A bottomed cylindrical instrument body having an opening and having the light source at the base;
A cylindrical member having a first opening end and a second opening end, the first opening end is a reflecting member disposed inside the instrument body,
A translucent member for closing the second opening end;
A first annular portion that covers the entire periphery of the boundary between the second opening end and the translucent member; and an outer edge of the translucent member on the second opening end side that extends from the first annular portion. A lighting fixture comprising: a second annular portion that covers the entire circumference; and a seal member that has a free end and a third annular portion that stands up from the first annular portion and contacts the inner wall of the instrument body.   The lighting fixture according to claim 1, wherein the free end of the third annular portion faces the opening.   The lighting fixture according to claim 1 or 2, wherein a thickness of the third annular portion is thinner than a thickness of the first annular portion.   The lighting device according to claim 1, wherein the sealing member is provided with a plurality of the third annular portions. The lighting device according to claim 1, wherein the seal member is an elastic member.

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