JP6135009B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture using an LED element as a light source.

  2. Description of the Related Art Conventionally, lighting fixtures that are attached to a ceiling and that use LED elements as light sources have been provided (see, for example, Patent Document 1). This lighting fixture includes an inverted Fuji type fixture main body formed in a horizontally long and long shape, and a light source unit attached to the lower surface of the fixture main body. The light source unit includes a lighting device and a plurality of LED elements that are turned on by the lighting device and emit light toward the floor surface. The instrument body has an accommodation recess formed in a substantially central portion along the longitudinal direction, and the light source unit is accommodated in the accommodation recess. In addition, the instrument body is formed with an inclined surface that inclines upward from the opening end of the housing recess toward both side ends of the instrument body. This inclined surface has a high light reflectance and functions as a reflector.

JP 2012-3993 A

  However, in the conventional lighting fixture, since the fixture main body is formed in an inverted Fuji shape, light irradiation to the inclined surface functioning as a reflector is small. Therefore, the effect as a reflecting plate is small, and the amount of light to the floor surface is insufficient.

  In addition, when a reflector is provided so as to surround the light source, there is a problem that although the amount of light to the floor surface increases, the irradiation range becomes narrow.

  This invention is made | formed in view of the said reason, The objective is to provide the lighting fixture which can ensure the wide irradiation range and can increase the light quantity to a floor surface.

The luminaire of the present invention includes a light source unit having an LED element that emits light in a first direction, an accommodation recess that opens in the first direction and accommodates the light source unit, and an opening in the accommodation recess. An instrument main body formed continuously from the periphery and having a reflecting portion for reflecting light; and a cover having an arcuate curved surface that curves downward, and covering the receiving recess , wherein the reflecting portion is provided on the receiving recess. A first surface that is inclined in a second direction opposite to the first direction as it is away from the opening, and the first direction that is continuous with the first surface and that is away from the opening of the housing recess. It is characterized by comprising a second surface that is inclined toward the surface.

  In this lighting fixture, it is preferable that the first surface and the second surface are configured as flat surfaces.

  In this lighting apparatus, it is preferable that the first surface and the second surface are configured by curved surfaces.

  In this lighting fixture, the dimension of the first surface in a third direction orthogonal to the first direction is preferably shorter than the dimension of the second surface in the third direction.

In this luminaire, the first surface prior SL, relative to the tangent of the end portion of the curved surface in the third direction orthogonal to the first direction, preferably in the said first direction .

  As described above, in the present invention, the first surface constituting the reflecting portion is inclined in the direction opposite to the irradiation direction of the LED element as it is away from the opening of the housing recess, so that the irradiation range is widened, and the second surface. Since it inclines toward the irradiation direction of the LED element as it moves away from the opening of the housing recess, the amount of light irradiated to the second surface increases, so that the irradiation range is secured and the amount of light to the floor surface also increases. There is an effect that can be.

It is sectional drawing of the lighting fixture of embodiment of this invention. It is an external appearance perspective view same as the above. It is sectional drawing of the lighting fixture of another structure. It is sectional drawing of the lighting fixture of another structure. It is an external appearance perspective view of the lighting fixture of another structure.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment)
FIG. 1 shows a cross-sectional view of the lighting fixture 1 of the present embodiment, and FIG. 2 shows an external perspective view thereof. In the following description, the vertical and horizontal directions in FIG. 1 are defined as vertical and horizontal directions, and the direction orthogonal to the vertical and horizontal directions is defined as the longitudinal direction.

  The luminaire 1 of this embodiment is a ceiling-embedded luminaire that is embedded in the back of the ceiling through an embedding hole 101 provided in the ceiling material 100. The lighting fixture 1 includes a fixture main body 2, a light source unit 3 attached to the fixture main body 2, and a cover 4 that covers the light source unit 3.

  The instrument main body 2 includes a support member 5 disposed on the back of the ceiling using a suspension bolt (not shown), and a reflector 6 attached to the support member 5.

  The support member 5 is formed in a rectangular box shape whose bottom surface is open, and has a flange portion 51 extending from the open end toward the side. And the supporting member 5 is arrange | positioned by the ceiling back through the embedding hole 101 provided in the ceiling material 100, and is attached to the suspension bolt (not shown) provided in the ceiling back. At this time, the upper surface of the flange 51 comes into contact with the ceiling material 100 at the periphery of the embedding hole 101, and the support member 5 is positioned in the vertical direction.

The reflection plate 6 is formed with a housing recess 61, a reflection portion 62, and a flange portion 63 by bending a sheet metal that reflects light, and is attached to the support member 5 so as to cover the opening of the support member 5. The reflecting plate 6 has a rectangular accommodating recess 61 formed continuously in the front-rear direction at the center in the left-right direction. The accommodation recess 61 has an open bottom surface and accommodates a light source unit 3 to be described later. Further, screw holes (not shown) are formed on the bottom surface (upper surface) of the housing recess 61 and the bottom surface (upper surface) of the support member 5, and the reflection plate 6 is supported by attaching screws 52 to the screw holes. It is attached to the member 5. Further, both side ends of the reflection plate 6 are bent upward to form a L-shaped flange portion 63. And the upper end of the collar part 63 contact | abuts the ceiling material 100 because the reflecting plate 6 is attached to the support member 5. FIG. Moreover, the rectangular-shaped termination | terminus member 64 is attached to the both ends of the front-back direction of the reflecting plate 6 (refer FIG. 2).

  Further, the reflecting plate 6 has a reflecting portion 62 formed between the opening of the housing recess 61 and the flange portion 63. The reflection unit 62 includes a first surface 621 and a second surface 622. The first surface 621 is a flat surface that is inclined upward as it goes to the side away from the opening end of the housing recess 61. The second surface 622 is a flat surface that is continuous with the first surface 621 and is inclined downward toward the side away from the opening end of the housing recess 61. In other words, the reflection part 62 is formed in a V-shaped cross section with the top at the top, and the accommodation recess 61 and the flange 63 are made continuous.

  Next, the light source unit 3 will be described. The light source unit 3 includes a mounting substrate 31 on which a plurality of LED elements 311 are mounted, an attachment member 32 to which the mounting substrate 31 is attached, and a power supply device 33 that supplies predetermined lighting power to the LED elements 311.

  The mounting substrate 31 is a printed circuit board formed in a rectangular plate shape that is long in the front-rear direction, and a plurality of LED elements 311 are mounted on the lower surface side by side in the front-rear direction.

  The attachment member 32 is formed into a rectangular box shape that is long in the front-rear direction with an upper surface opened by a bottom plate 321 and a pair of side plates 322 extending upward from both side ends of the bottom plate 321 by bending a sheet metal. Yes. The bottom plate 321 is formed with a recess 323 having an open bottom surface, and the mounting substrate 31 is attached to the bottom of the recess 323. Therefore, the LED element 311 emits light downward. In addition, a curved portion 324 that is circularly curved toward the direction away from each other is formed at the front end of each side plate 322 in the front-rear direction.

  The power supply device 33 is configured by storing a lighting circuit 331 for supplying lighting power to the LED element 311 in a storage case 332. The storage case 332 is attached to the upper surface of the bottom plate 321. Then, the wiring 333 led out from the storage case 332 is connected to a connector (not shown) on the mounting substrate 31, whereby lighting power is supplied from the lighting circuit 331 to the LED element 311.

  The mounting member 32 to which the mounting substrate 31 and the power supply device 33 are attached is attached to the reflecting plate 6 by a fitting structure (not shown) provided on the reflecting plate 6 and the mounting member 32, respectively. Thereby, the light source unit 3 is accommodated in the accommodating recess 61 so as not to protrude from the accommodating recess 61.

Next, the cover 4 is formed in a long shape whose upper surface is opened with a diffusible material (for example, milky white acrylic resin), and the amount of protrusion downward increases from the both ends to the center. A diffusing surface 41 having a convex lens shape is provided. Thus, by making the shape of the diffusing surface 41 an arcuate curved surface that curves downward, it is possible to make the light distribution to each direction substantially the same as compared with the case where the downward projection amount is made equal. Further, at both end portions of the cover 4, extending portions 42 are formed so as to overlap with the opening peripheral edge of the housing recess 61 of the reflecting plate 6 in the vertical direction. In addition, a protruding wall portion 43 protruding upward is provided on the inner side of the extending portion 42, and a protruding portion 44 protruding inward is formed at the tip of the protruding wall portion 43. Yes. Further, in the vicinity of the base end of the protruding wall portion 43, a protruding portion 45 protruding inward is formed. When attaching the cover 4, the protruding wall portion 43 of the cover 4 is inserted from below between the side plate 322 of the attachment member 32 and the side wall of the accommodating recess 61, and the protruding portion 44 is engaged with the curved portion 324. The cover 4 is attached to the light source unit 3 (the instrument body 2 ). At this time, the protrusion 45 is brought into contact with the lower surface of the bottom plate 321 of the mounting member 32, whereby the cover 4 is positioned in the vertical direction.

  As described above, in the lighting fixture 1 of the present embodiment, the reflecting portion 62 is formed in a V-shaped cross section including the first surface 621 and the second surface 622. Accordingly, the second surface 622 facing inward is irradiated with a large amount of light emitted from the LED element 311 and diffused by the cover 4. Therefore, since the amount of light due to the reflection on the second surface 622 is increased in the lighting fixture 1 of the present embodiment, the amount of light to the floor surface is increased as compared with a conventional lighting fixture formed in an inverted Fuji shape. Can do. Furthermore, since the first surface 621 faces the outside, a wide irradiation range can be ensured by the reflected light from the first surface 621.

  Moreover, the reflection part 62 of this embodiment is formed in the V shape which makes upper direction a vertex. That is, since the reflecting part 62 does not protrude downward, the instrument body 2 can be made thin.

  Furthermore, the dimension W1 of the first surface 621 in the left-right direction is shorter than the dimension W2 of the second surface 622 in the left-right direction. That is, the connecting portion 623 between the first surface 621 and the second surface 622 is closer to the opening side of the housing recess 61 than the center 624 of the reflecting portion 62 in the left-right direction. Thereby, since more light is reflected by the 2nd surface 622, the light quantity to a floor surface can be increased more.

  Further, as shown in FIG. 3, the first surface 621 may be configured to be located below the tangent line L <b> 1 at the side end of the diffusion surface 41 of the cover 4. That is, the inclination angle of the first surface 621 is gently configured. With this configuration, the amount of light due to reflection on the first surface 621 can be increased.

  Moreover, in this embodiment, although the 1st surface 621 and the 2nd surface 622 are comprised by the plane, you may comprise by a curved surface. As shown in FIGS. 4 and 5, the first surface 621 and the second surface 622 are formed of curved surfaces by bending the reflecting plate 6 so that the reflecting portion 62 is curved upward. Even when configured in this manner, the same effects as those obtained when the first surface 621 and the second surface 622 are configured as flat surfaces can be obtained.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Appliance main body 3 Light source unit 311 LED element 4 Cover 41 Diffusion surface 5 Support member 6 Reflecting plate 61 Housing recessed part 62 Reflecting part 621 1st surface 622 2nd surface

Claims (5)

A light source unit having an LED element that emits light in a first direction;
An instrument body having an opening formed in the first direction and housing the light source unit, and a reflecting portion that is formed continuously from the opening periphery of the housing recess and reflects light ;
An arcuate curved surface that curves downward, and a cover that covers the housing recess ,
The reflecting portion is continuous with the first surface inclined in the second direction opposite to the first direction as the distance from the opening of the housing recess, and the first surface, And a second surface that inclines in the first direction as the distance from the opening increases. The lighting apparatus according to claim 1, wherein the first surface and the second surface are configured as flat surfaces. The lighting apparatus according to claim 1, wherein the first surface and the second surface are curved surfaces. The dimension of the first surface in a third direction orthogonal to the first direction is shorter than the dimension of the second surface in the third direction. The lighting fixture of any one of these. The first surface prior SL is claim 1, characterized in that to a tangent of the end portion of the curved surface in the third direction orthogonal to the first direction, in the first direction The lighting fixture of any one of thru | or 4.

Images