JP5590656B2 - 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 light emitting unit having an LED chip that is disposed on the LED substrate and is arranged with the main optical axis facing the reflecting surface. A box that houses the reflector and the LED light emitting unit, a channel formed along the back surface of the LED substrate, and a position that is attached to the tip of the reflector and is out of the reflective surface has a glare shielding surface for shielding light directed to, and is characterized in that and a glare prevention member that abuts against the lid when the lid is coupled to the box body is closed.

  The illuminating device according to the present invention has a plurality of LED light emitting units, and a gap is provided between the substrates of the LED light emitting units.

  The lighting device according to the present invention has three or more LED light emitting units, and the substrate of each LED light emitting unit is supported by a polygonal cylindrical portion.

  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 1 is a longitudinal sectional view of the lighting device of FIG. The top view of the reflecting plate and reflecting plate attachment member of the illuminating device of FIG. 1 is a longitudinal cross-sectional view of the lighting device of FIG. 1 before adjusting the reflector. Longitudinal sectional view after adjusting the reflector of the lighting device of FIG. The longitudinal cross-sectional view of the illuminating device of 2nd Embodiment which concerns on this invention. The top view of the illuminating device of 3rd Embodiment which concerns on this invention. FIG. 7 is a longitudinal sectional view of the lighting device The longitudinal cross-sectional view of the illuminating device of 4th 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. 2) 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 at the bottom of the reflecting surface 17, and has a substantially bowl-like shape for forming a glare cut surface that shields light directed to a position away from the reflecting surface 17 at the tip. An antiglare tool 19 is integrally formed. The through hole 18 serves as an air flow path and a wiring passage to the LED light emitting unit 12. The box 11 has a plurality of base plates 20, and an intermediate plate 22 having a U-shaped hollow space 21 is fixed to the base plate 20 with screws. A power supply unit 23 is attached to each base plate 20.

The reflection plate 13 is screwed to the reflection plate mounting member 24 and is screwed to the base plate 20 via the reflection plate mounting member 24. In the LED light emitting unit 12, an LED chip 26 is mounted on an LED substrate 25 having a predetermined printed circuit (not shown). The LED substrate 25 is thermally connected to the middle plate 22 and fixed with screws. In the vicinity of the edge of the reflector 13 where the glare prevention device 19 is disposed, a plate-shaped light shielding device 27 is disposed in parallel with the direction of irradiation of the reflected light to form a glare cut surface. ing. The shading tool 27 is coated with, for example, black matte that absorbs light. A shock-absorbing material 28 having elasticity for preventing the light-transmitting plate 15 from being bent by contacting the light-transmitting plate 15 when the lid 14 is closed by the box 11 is attached to the tip of the light shielding device 27. ing.
A glare prevention tool 29 having a substantially semi-cylindrical shape for forming a glare cut surface having an axis line arranged in parallel to the irradiation direction of the reflected light is screwed in front of the LED light emitting unit 12 in the base plate 20. It is fixed. The glare prevention tool 29 is coated with, for example, black matte that absorbs light. The glare prevention tool 29 has a top plate 30 for preventing the LED chip 26 from being directly viewed from the irradiation target side and for improving its own strength, and is formed in a bottomed shape (a topped shape). Yes.

  As shown in FIG. 3, a pair of reflectors 13 is attached to the reflector attachment member 24. The reflector plate mounting member 24 is provided with a pair of long holes 31 and round holes 32 on the side. The reflection plate 13 has cut portions 33 that are cut in a straight line at three locations at intervals of 90 degrees on the outer edge of the glare prevention device 19. The cut part 33 has a function of reducing the separation distance between a plurality of reflecting plates 13 arranged. The reflection plate 13 is attached to the reflection plate attachment member 24 by screwing a plurality of screws 34 into the reflection plate attachment member 24 from the glare prevention device 19 side.

  As shown in FIGS. 4 and 5, the reflector mounting member 24 is formed by loosening the screw 36 screwed through the long hole 31 with the screw 35 screwed through the round hole 32 as a fulcrum. The elevation angle of 13 can be tilted with respect to the box 11 by, for example, an angle θ. Thereby, the direction of the reflected light by the reflecting surface 17 of the reflecting plate 13 can be changed.

  In such an illuminating device 10, the commercial power supplied to the power supply unit 23 is converted into a direct current by the power supply unit 23 and applied to the printed circuit of the LED substrate 25, whereby the LED chip 26 emits light. The light from the LED chip 26 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 light traveling toward the position off the reflecting surface 17 is shielded by the glare prevention tool 19, the light shielding tool 27, and the glare prevention tool 29. In the illuminating device 10, an air flow path that circulates around the reflecting plate 13 through the gap 21 of the intermediate plate 22 to which the LED substrate 25 is fixed is formed. Therefore, the heat of the LED substrate 25 that has generated heat due to the light emission of the LED chip 26 is convected through the gap 21 to cool the LED substrate 25.

Therefore, in the lighting device 10 of the first embodiment, an air flow path is formed through the gap 21 of the intermediate plate 22.
Thereby, in the illuminating device 10 of this 1st Embodiment, the LED board 25 can be cooled with the air distribute | circulated through the space | gap 21 of the intermediate | middle board 22, and the characteristic of the LED light emission part 12 can be ensured.
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 26 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 is not enlarged, and the direct light from the LED chip 26 which cannot be controlled by the reflecting plate 13 can be surely glare cut. .
In addition, the lighting device 10 according to the first embodiment includes a plate-shaped light shielding tool 27 so that the glare prevention tool 19 does 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.

Further, in the illumination device 10 according to the first embodiment, the glare prevention tool 29 having a substantially semi-cylindrical shape has a top plate 30.
Thereby, in the illuminating device 10 of this 1st Embodiment, the LED chip 26 can be made not to look directly from a to-be-irradiated object side but it can be made favorable in an external appearance, and its own intensity | strength can be improved.
Moreover, in the illuminating device 10 of this 1st Embodiment, the buffer material 28 contact | abuts to the resin-made translucent board 15. FIG.
Thereby, in the illuminating device 10 of this 1st Embodiment, the drooping of the translucent board 15 can be prevented.
And in the illuminating device 10 of this 1st Embodiment, the plate-shaped light-shielding tool 27 and the substantially semi-cylindrical glare prevention tool 29 which form a glare cut surface are set to the color which absorbs light.
Thereby, in the illuminating device 10 of this 1st Embodiment, a glare can be cut reliably, without reflecting light.

In addition, in the illumination device 10 of the first embodiment, air is flowed through the through hole 18 of the reflector 13.
Thereby, in the illuminating device 10 of this 1st Embodiment, the LED chip 26 can be cooled with the fluid (air) circulated through the through-hole 18 of the reflecting plate 13.
Furthermore, in the lighting device 10 of the first embodiment, wiring is routed through the through holes 18 of the reflector 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. In the following embodiments, components that are the same as those in the first embodiment described above or functionally similar components are simplified or omitted by giving the same reference numerals or equivalent symbols in the drawings. To do.
As shown in FIG. 6, the illumination device 40 according to the second embodiment of the present invention includes a pair of LED light emitting units 12 and a pair of reflectors 13, and is disposed on an intermediate plate 41 that is opposed to each LED light emitting unit 12. The LED substrates 25 are arranged back to back. Therefore, a gap 42 is provided between the middle plates 41, and the upper end portion of the middle plate 41 is bridged.

  In such an illuminating device 40, an air flow path that circulates around the reflecting plate 13 through the gap 42 of the intermediate plate 41 to which the LED substrate 25 is fixed is formed. Therefore, the heat of the LED board 25 that generates heat due to the light emission of the LED chip 26 is convected through the gap 42 toward the side of the LED board 25 to cool the LED board 25.

Therefore, in the illumination device 40 of the second embodiment, an air flow path is formed between the pair of LED substrates 25.
Thereby, in the illuminating device 40 of this 2nd Embodiment, a pair of LED board 25 can be cooled and the characteristic of the LED light emission part 12 can be ensured.

(Third embodiment)
Next, the illuminating device of 3rd Embodiment of this invention is demonstrated.
As shown in FIGS. 7 and 8, the illumination device 50 according to the third embodiment of the present invention includes two pairs of LED light emitting units 12 and two pairs of reflecting plates 13, and each LED light emitting unit 12 is a rectangular tube. Each LED board 25 is attached on four sides of a middle plate (cylinder part) 51 formed in a shape. Therefore, a gap 52 is provided in the hollow portion of the intermediate plate 51.

  In such an illuminating device 50, an air flow path that circulates around the reflecting plate 13 through the gap 52 of the intermediate plate 51 to which the LED substrate 25 is fixed is formed. Therefore, the heat of the LED board 25 that has generated heat due to the light emission of the LED chip 26 is convected through the gap 52 to cool the LED board 25.

Therefore, in the illumination device 50 of the third embodiment, an air flow path is formed between the two pairs of LED substrates 25.
Thereby, in the illuminating device 50 of this 3rd Embodiment, two pairs of LED boards 25 can be cooled and the characteristic of the LED light emission part 12 can be ensured.

(Fourth embodiment)
Next, the illuminating device of 4th Embodiment of this invention is demonstrated.
As shown in FIG. 9, the illuminating device 60 of 4th Embodiment of this invention is equipped with two pairs of LED light emission parts 12 and two pairs of reflecting plates 13, and each LED light emission part 12 forms in a square cylinder shape. Each LED board 25 is attached to each of four surfaces of the intermediate plate (cylinder part) 61 that has been formed. Therefore, a gap 62 is provided in the hollow portion of the intermediate plate 61. The middle plate 61 is closed at its upper end by a top plate 64 through an opening 63.

  In such an illuminating device 60, an air flow path that circulates around the reflecting plate 13 through the gap 62 of the intermediate plate 61 to which the LED substrate 25 is fixed is formed. Therefore, the heat of the LED substrate 25 that generates heat due to the light emission of the LED chip 26 is convected through the opening 62 through the opening 63 to cool the LED substrate 25.

Therefore, in the illumination device 60 of the fourth embodiment, an air flow path is formed between the two pairs of LED substrates 25.
Thereby, in the illuminating device 60 of this 4th Embodiment, the two pairs of LED board 25 can be cooled, and the characteristic of the LED light emission part 12 can be ensured.

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, 50, 60 Illumination device 12 LED light emitting part 17 Reflecting surface 21, 52, 62 Air gap (flow path)
25 LED board (board)
51, 61 Middle plate (cylinder part)

Claims (3)

A reflector having a reflective surface having a parabolic curved surface;
An LED light-emitting unit that has an LED chip disposed on the LED substrate, with the main optical axis facing the reflective surface;
A box housing the reflector and the LED light-emitting unit;
A flow path formed along the back surface of the LED substrate;
Is attached to the tip portion of the reflector, have a glare shielding surface for blocking light toward a position deviated from the reflective surface, and, when said lid is connected to the box body is closed a glare prevention member that contacts the cover,
A lighting device comprising: The lighting device according to claim 1.
Having a plurality of the LED light emitting parts,
The illuminating device which provided the space | gap between the board | substrates of each said LED light emission part. The lighting device according to claim 1.
Having 3 or more LED light emitting parts,
A lighting device in which a substrate of each LED light emitting unit is supported by a polygonal cylindrical portion.

Images