JP5590658B2 - Lighting device - Google Patents

Description

  The present invention relates to an illuminating device applied for light-up, for example, for illuminating a high-rise building from below using an LED light emitting unit.

  2. Description of the Related Art Conventionally, there has been known an illuminating device in which a main optical axis of an LED light emitting unit is directed to a reflecting surface (for example, see Patent Document 1).

JP 2008-226788 A (FIG. 2, claim 1)

Lighting equipment for lighting up to illuminate high-rise buildings from below at night, for lighting down to illuminate high-rise buildings from top to bottom, and for spot lighting to spotlight buildings It is required to be able to irradiate parallel light.
However, Patent Document 1 is premised on a vehicle headlamp, and its light distribution is a structure having a certain spread with respect to the optical axis, and is not suitable for the above-described use.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an illumination device suitable for lighting up, for example, for illuminating a high-rise building from below using an LED light emitting unit. is there.

An illuminating device according to the present invention includes a reflecting plate having a reflecting surface having a parabolic curved surface, an LED substrate on which an LED chip is mounted, and a box body that houses the reflecting plate and the LED substrate, and the LED substrate is parallel in a state where the main optical axis is inclined so that faces of the LED chip side radius of curvature is large in the parabolic curved surface, a said box body, light emitted from the LED chip by the reflector Arranged at a position where it is reflected as light, and the reflector is further arranged in parallel with the irradiation direction of the light reflected by the reflecting surface of the reflector at the outer periphery of the reflector. Ru comprising a shielding portion for shielding a direct light from the LED chips.

  In the lighting device according to the present invention, the LED light emitting unit is provided at a position where the light reflected by the reflecting surface is not shielded.

  According to the illuminating device of this invention, it has the effect that the illuminating device suitable for the light-up which illuminates, for example, a high-rise building from the downward direction using an LED light emission part can be provided.

The external appearance perspective view seen from diagonally upward of the state which opened the cover of the illuminating device of 1st Embodiment which concerns on this invention The top view of the reflecting plate and reflecting plate attachment member of the illuminating device of FIG. 1 is a longitudinal sectional view of the lighting device of FIG. The longitudinal cross-sectional view of the illuminating device of 2nd Embodiment which concerns on this invention.

Hereinafter, lighting devices according to a plurality of embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
The lighting device 10 according to the first embodiment of the present invention includes a box 11, a plurality of LED light emitting units 12, a plurality of reflecting plates 13, and a lid 14 having a light transmitting plate 15. It is.

  As shown in FIG. 1, the box 11 is formed by press-forming a thin aluminum die-cast plate member so as to open upward, and the LED light emitting unit (see FIG. 3) 12 and the reflection plate 13 are formed. Contained. The end of the lid 14 is connected to the end of the box 11 by a hinge member 16. The translucent plate 15 is, for example, a plate member made of acrylic resin.

  As shown in FIG. 2, the reflecting plate 13 has a concave hemispherical parabolic curved surface, and has a mirror-like reflecting surface 17 formed by aluminum deposition. The reflecting plate 13 has a semicircular through hole 18 on the side opposite to the illumination direction on the reflecting surface 17, and forms a glare cut surface that shields light directed to a position away from the reflecting surface 17 at the tip. The glare prevention tool 19 having a substantially bowl shape is integrally formed. The reflection plate 13 is disposed in the vicinity of the edge where the glare prevention device 19 is arranged, in parallel with the irradiation direction of the reflected light, and a plate-shaped light shielding device 20 for forming a glare cut surface is attached. ing. The shading tool 20 is coated with, for example, black matte that absorbs light.

  The through hole 18 serves as an air flow path and a power line path to the LED light emitting unit 12. Further, the through-hole 18 is cut out to a position where it does not reflect the light having the color unevenness emitted from the LED light emitting unit 12. The reflection plate 13 is fixed to the reflection plate mounting member 21 by screws 22 and is fixed to the box 11 via the reflection plate mounting member 21.

  The reflector plate mounting member 21 is provided with a pair of a long hole 23 and a round hole 24 that constitute an adjustment portion on the side. The reflector mounting member 21 is screwed into the box 11 through the long hole 23 with a screw 25 constituting another part of the adjusting portion screwed into the box 11 through the round hole 24 as a fulcrum. By loosening the screws 26 constituting the other part of the part, the light-shielding tool 20 can be integrated and the reflection plate 13 can be tilted with respect to the box 11 by a predetermined angle. Thereby, the direction of the reflected light by the reflective surface 17 of the reflecting plate 13 and the direction of the light shielding tool 20 according to the reflected light can be changed. The reflection plate 13 has cut portions 27 that are cut in a straight line at three locations at intervals of 90 degrees on the outer edge of the glare prevention tool 19. The cut part 27 has a function of reducing the separation distance between the plurality of reflecting plates 13 arranged.

  As shown in FIG. 3, the LED light emitting unit 12 projects from the box body 11 with the LED substrate 28 tilted so that the main optical axis is directed to the side with the larger curvature radius on the parabolic curved surface of the reflecting surface 17 of the reflector 13. It is attached. An LED chip 29 is mounted on the LED substrate 28.

  Such an illuminating device 10 has a built-in power supply unit (not shown) electrically connected to an external commercial power supply, and a direct current is applied from the power supply unit to the printed circuit on the LED substrate 28 to thereby produce an LED chip. 29 emits light. The light from the LED chip 29 is reflected by the reflecting surface 17 of the reflecting plate 13 and becomes parallel light through the light transmitting plate 15 and is irradiated to the irradiation target. At this time, the LED substrate 28 is tilted so that the main optical axis faces the side of the reflecting plate 17 where the radius of curvature on the parabolic curved surface of the reflecting surface 17 is large, so that glare occurs in the light from the LED chip 29. The side light having a large height does not face the reflecting surface 17.

Therefore, in the illumination device 10 of the first embodiment, the LED substrate 28 is tilted so that the main optical axis is directed to the side with the larger curvature radius on the parabolic curved surface of the reflecting surface 17 of the reflecting plate 13.
Thereby, in the illuminating device 10 of this 1st Embodiment, since the side part light with the big factor which produces a glare among the lights from the LED chip 29 does not face the reflective surface 17, it is surely made a glare cut. Can do.
Moreover, in the illuminating device 10 of this 1st Embodiment, the reflecting plate 13 has the reflective surface 17 which has a parabolic curved surface.
Thereby, in the illuminating device 10 of this 1st Embodiment, the part which cannot be controlled by the light directivity of the LED chip 29 can be used effectively, and a light efficiency can be improved.
And in the illuminating device 10 of this 1st Embodiment, the glare cut surface is formed of the substantially bowl-shaped glare prevention tool 19. FIG.
Thereby, in the illuminating device 10 of this 1st Embodiment, the shape of the reflecting plate 13 does not enlarge, and the direct light from the LED chip 29 which cannot be controlled with the reflecting plate 13 can be reliably glare cut. .
And in the illuminating device 10 of this 1st Embodiment, the plate-shaped light-shielding tool 20 is provided so that the glare prevention tool 19 may not become large.
Thereby, in the illuminating device 10 of this 1st Embodiment, the extraction efficiency of light can be improved, without the glare prevention tool 19 becoming large.

Furthermore, in the illumination device 10 of the first embodiment, air is flowed through the through hole 18 of the reflecting plate 13.
Thereby, in the illuminating device 10 of this 1st Embodiment, the LED chip 29 can be cooled with the air circulated through the through-hole 18 of the reflecting plate 13.
Moreover, in the illuminating device 10 of this 1st Embodiment, wiring is routed through the through-hole 18 of the reflecting plate 13.
Thereby, in the illuminating device 10 of this 1st Embodiment, the wiring arranged by the through-hole 18 of the reflecting plate 13 is cooled by the air which circulates through the through-hole 18, and can suppress the heat_generation | fever of wiring. .

(Second Embodiment)
Next, the illuminating device of 2nd Embodiment of this invention is demonstrated. Note that, in the following second embodiment, the same or equivalent components in the drawing are simplified or described for the same components or functionally similar components as those in the first embodiment described above. Omitted.
As shown in FIG. 4, in the illumination device 40 according to the second embodiment of the present invention, the LED substrate 28 of the LED light emitting unit 12 is lowered from the upper surface of the box 11 so as not to shield the light reflected by the reflecting surface 17. At the position, the reflecting plate 13 is attached to the reflecting surface 17 so as to be inclined so that the main optical axis faces the side of the parabolic curved surface of the reflecting surface 17 where the curvature radius is large.

Therefore, in the illumination device 40 of the second embodiment, the light reflected by the reflecting surface 17 does not hit the LED substrate 28.
Thereby, in the illuminating device 40 of this 2nd Embodiment, since the light reflected on the reflective surface 17 is not shielded, light can be taken out efficiently.

In addition, the box body, LED light emission part, lid | cover, etc. which were used by each embodiment are not limited to what was illustrated, and can be changed suitably.
In addition, the present invention is not only applicable to light up for illuminating a building from below, but for light down to illuminate a building from above to below, or to perform spot illumination on a building It can also be applied to spot lighting and can be applied to other than buildings.

10, 40 Illumination device 12 LED light emitting unit 17 Reflecting surface

Claims (2)

A reflector having a reflective surface having a parabolic curved surface;
An LED substrate on which an LED chip is mounted;
A box housing the reflector and the LED substrate;
With
The LED substrate, in a state where the main optical axis is inclined so that faces of the LED chip side radius of curvature is large in the parabolic curved surface, a said box body, said reflector irradiated light from the LED chip is disposed at a position which is reflected as parallel light by,
The reflecting plate further includes a light shielding portion that shields the direct light of the LED chip, which is arranged in parallel with the irradiation direction of the light reflected by the reflecting surface of the reflecting plate at the outer peripheral portion of the reflecting plate. Lighting device. The lighting device according to claim 1.
The illuminating device provided with the LED light emission part in the position which does not shield the light reflected on the said reflective surface.

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