JP5590657B2 - 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 illumination device according to the present invention includes a reflecting plate having a reflecting surface having a parabolic curved surface, an LED light emitting unit disposed so that a main optical axis is directed to the reflecting surface and reflected by the reflecting plate with parallel light , A plate-shaped light-shielding device that is disposed on the side surface of the LED light source and perpendicularly to the direction of reflected light of the reflecting plate on the opening direction side of the reflecting plate, and is positioned away from the reflecting surface. A light-shielding tool that shields light from which the light travels, an attachment member to which the reflector is attached, and an adjustment unit that adjusts the inclination of the attachment member, the adjustment for adjusting the elevation angle of the reflector with respect to the LED light-emitting part A section.

Lighting device according to the present invention, the light shielding member is processed to absorb light that has been subjected.

  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 one 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 before adjustment by the adjustment unit of the illumination device of FIG. 1 is a longitudinal sectional view after adjustment by the adjustment unit of the illumination device of FIG.

Hereinafter, an illumination device according to an embodiment of the present invention will be described with reference to the drawings.
An illuminating device 10 according to an embodiment of the present invention is a lighting device for lighting up including 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. is there.

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 a long hole 31 and a round hole 32 that constitute a part of the adjusting portion 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 screwed through the long hole 31 with a screw 35 constituting another part of the adjustment unit screwed through the round hole 32 as a fulcrum. By loosening the screws 36 that constitute the remaining part of the adjusting section, the light shield 27 can be integrated with the reflector 13 so that the elevation angle of the reflector 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 reflective surface 17 of the reflecting plate 13 and the direction of the light shielding tool 27 according to the reflected light 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.

Therefore, in the illumination device 10 according to this embodiment, the long hole 31, the round hole 32, the screw 35, and the screw 36 constituting the adjusting unit are used in accordance with the direction of reflected light and the reflected light from the reflecting surface 17 of the reflecting plate 13. The direction of the shading tool 27 is changed.
Thereby, in the illuminating device 10 of this one Embodiment, the fine adjustment of the light to a preferable direction with respect to a to-be-irradiated object can be easily performed in an installation place.
Moreover, in the illuminating device 10 of this one Embodiment, the reflecting plate 13 has the reflective surface 17 which has a parabolic curved surface.
Thereby, in the illuminating device 10 of this one 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 one 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 one Embodiment, the shape of the reflecting plate 13 does not increase in size, and the direct light from the LED chip 26 that cannot be controlled by the reflecting plate 13 can be surely glare cut.
In addition, the lighting device 10 according to this 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 one Embodiment, the glare prevention tool 19 does not become large, but the extraction efficiency of light can be improved.

Furthermore, in the illumination device 10 of this 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 one embodiment, the LED chip 26 can be made not to be directly viewed from the irradiation target side, the appearance can be improved, and the strength of the LED chip 26 can be improved.
In addition, in the illuminating device 10 of this embodiment, the buffer material 28 contacts the translucent plate 15 made of resin.
Thereby, in the illuminating device 10 of this one Embodiment, the drooping of the translucent board 15 can be prevented.
Further, in the lighting device 10 of this embodiment, the plate-shaped light shielding tool 27 and the substantially semi-cylindrical glare prevention tool 29 that form the glare cut surface are set to a color that absorbs light.
Thereby, in the illuminating device 10 of this one Embodiment, glare can be cut reliably, without reflecting light.

And in the illuminating device 10 of this one Embodiment, the air flow path is formed through the space | gap 21 of the intermediate plate 22. FIG.
Thereby, in the illuminating device 10 of this one embodiment, the LED substrate 25 can be cooled by the air flowing through the gap 21 of the intermediate plate 22 to ensure the characteristics of the LED light emitting unit 12.
Further, in the lighting device 10 of this embodiment, air is flowed through the through hole 18 of the reflecting plate 13.
Thereby, in the illuminating device 10 of this one Embodiment, the LED chip 26 can be cooled with the air circulated through the through-hole 18 of the reflecting plate 13.
Furthermore, in the illuminating device 10 of this embodiment, wiring is routed through the through-hole 18 of the reflecting plate 13.
Thereby, in the illuminating device 10 of this embodiment, the wiring arranged in the through hole 18 of the reflecting plate 13 is cooled by the air circulating through the through hole 18, and the heat generation of the wiring can be suppressed.

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.

DESCRIPTION OF SYMBOLS 10 Illuminating device 12 LED light emission part 17 Reflecting surface 27 Light-shielding tool 31 Long hole (adjustment part)
32 Round hole (adjustment part)
35 Screw (Adjustment part)
36 Screw (Adjustment part)

Claims (2)

A reflector having a reflecting surface having a parabolic curved surface;
An LED light emitting unit arranged so that the main optical axis is directed to the reflecting surface and reflected by the reflecting plate with parallel light ;
A plate-shaped light-shielding device that is disposed on the side surface of the LED light source and perpendicularly to the direction of reflected light of the reflecting plate on the opening direction side of the reflecting plate, and is positioned away from the reflecting surface. A shading tool that shields the light from the
An attachment member to which the reflector is attached;
An adjustment unit for adjusting the inclination of the attachment member, the adjustment unit for adjusting the elevation angle of the reflector with respect to the LED light emitting unit;
A lighting device comprising: The lighting device according to claim 1.
Wherein the light shielding member, the illumination device processing that absorbs light that has been subjected.

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