JP2012104349A - Led lighting apparatus and balustrade lighting facility - Google Patents

Abstract

Provided is an LED illumination device that can effectively dissipate heat and at the same time can expand the light irradiation angle of a highly directional LED.
A translucent straight tubular cover 21, a heat radiation substrate 22 provided in the cover 21 along the longitudinal direction and disposed at an offset position near the center of the cross section of the cover 21, and heat radiation A fluorescent lamp type LED lighting lamp 20 having a plurality of LEDs 23 fixed along the longitudinal direction of the cover 21 is fixed to the opposite side of the substrate 22 to the offset position side, and the LED lighting lamp 20 is detachably held. At the same time, the holding unit 30 for electrically connecting the LED lighting lamp 20, the concave reflector 40 provided so as to cover the offset position side of the LED lighting lamp 20, and the offset position side of the LED lighting lamp 20 is opposite. LED illuminating device 100 provided with the louver 50 provided in a side.
[Selection] Figure 2

Description

  The present invention relates to an LED lighting device and railing lighting equipment that uses a fluorescent-type LED lighting as a light source and is used for railing on a highway.

  In recent years, an illumination lamp using an LED (light emitting diode) as a light source has been put into practical use, and a fluorescent lamp type LED illumination lamp has also been put into practical use. A fluorescent lamp type LED illumination lamp is configured by arranging a plurality of LEDs in series and housing the LEDs in series in a straight tubular cover (see Patent Document 1).

Utility Model Registration No. 3151501

  By the way, a fluorescent lamp type LED illumination lamp has a problem regarding heat generation and a light irradiation angle. Regarding heat generation, it is necessary to use LEDs with high wattage in order to obtain sufficient light emission brightness with a fluorescent lamp type LED illumination lamp. However, if a large number of LEDs with high wattage are arranged in a straight tubular cover, heat generation will occur. The problem is that the amount increases.

  In addition, regarding the light irradiation angle, the LED has a characteristic that the directivity of light irradiation is strong and the irradiation light does not spread over a wide angle, so that it is difficult to use it for applications that require a wide angle of irradiation at present. There is. For example, if a fluorescent lamp type LED illumination lamp is used as tunnel illumination or backlight illumination of a display panel, the light irradiation angle becomes too narrow, and light irradiation characteristics suitable for the application cannot be obtained.

  These problems of heat generation and light irradiation angle are also referred to in Patent Document 1. In Patent Document 1, a plurality of LEDs are directly arranged on an aluminum substrate in a series arrangement, and the aluminum substrate is part of a straight tubular cover. The heat is taken out by the structure which is exposed to the outside and radiates heat through the aluminum substrate. However, although there is a disclosure of arranging a pair of light reflecting plates on both sides of the light irradiation direction of the LED and concentrating the light irregularly reflected by the pair of light reflecting plates to increase the luminance, the configuration for expanding the light irradiation angle No disclosure has been made, and it has not yet been possible to solve both the problems of heat generation and light irradiation angle.

  The present invention is proposed in view of the above problems, and uses an LED illumination device that can effectively dissipate heat and, at the same time, can widen the light irradiation angle of a highly directional LED, and the LED illumination device. The purpose is to provide railing lighting equipment.

The LED lighting device of the present invention is provided with a translucent straight tubular cover, and is provided in the cover along the longitudinal direction, and at least a part is disposed at an offset position near the center of the cross-sectional view of the cover. Fluorescent lamp type LED illumination lamp having a heat dissipation substrate and LEDs fixed to the opposite side of the offset position of the heat dissipation substrate and arranged in a plurality along the longitudinal direction of the cover, and the LED illumination lamp Detachably holding, a holding part for electrically connecting the LED lighting lamp, a concave reflector provided to cover the offset position side of the LED lighting lamp, and the LED lighting lamp And a louver provided on the opposite side to the offset position side.
According to this configuration, by disposing the LED on the heat dissipation board close to the offset position of the cover, effective heat dissipation can be achieved through the heat dissipation board and the cover. At the same time, the light irradiation angle of the LED having strong directivity can be remarkably expanded by reflecting the light emission of the LED of the arrangement by the reflector on the offset position side.

In the LED lighting device of the present invention, the LED of the LED lighting lamp is provided at an offset position close to the heat dissipation substrate side from a substantially sectional view center of the cover, and the cover is translucent and opaque. It is characterized by.
According to this structure, the light irradiation angle of LED with strong directivity can be expanded more reliably.

In the LED lighting device according to the present invention, the heat dissipation substrate of the LED lighting lamp includes a substrate body that is attached by being engaged with the cover, and an LED substrate that is mounted with the LED and is fixed to the substrate body. It is characterized by that.
According to this configuration, the LED can be easily mounted on the heat dissipation substrate by fixing the LED substrate to the separated substrate body.

The LED lighting device of the present invention is characterized in that both the substrate body and the LED substrate are made of aluminum.
According to this structure, more reliable and effective heat dissipation can be performed by both the substrate body and the LED substrate.

In the LED lighting device of the present invention, a pair of cover rails that protrude inward and extend in the longitudinal direction are integrally formed on the cover of the LED lighting lamp, and the heat dissipation board of the LED lighting lamp is connected to the pair of the heat sinks. It is characterized by engaging and holding the cover rail.
According to this configuration, the heat dissipation substrate can be easily attached to the cover. Furthermore, the heat dissipation board and the LED can be easily arranged at the offset position.

The railing illuminating equipment of the present invention is provided with the LED lighting device of the present invention on a side wall, arranged so that the longitudinal direction of the LED illuminating lamp and the longitudinal direction of the louver are lateral to the wall surface, and a plurality of the louvers Are arranged in the longitudinal direction of the wall surface, and each of the louvers is directed obliquely downward with respect to the illumination direction of the illumination light.
According to this configuration, it is possible to obtain a high rail illumination having a necessary and sufficient illumination performance required for a high rail illumination and excellent in safety at a low cost.

  According to the LED lighting device of the present invention or the railing lighting equipment having the LED lighting device, effective heat radiation can be achieved, and at the same time, the light irradiation angle of the highly directional LED can be expanded.

The front view which shows the LED lighting apparatus of embodiment by this invention. The longitudinal cross-sectional view which shows the LED lighting apparatus of embodiment by this invention. AA arrow sectional drawing of FIG. BB arrow sectional drawing of FIG. Cross-sectional explanatory drawing which shows the LED illuminating lamp and reflector in the LED illuminating device of embodiment. The front view of the one end part of LED lighting.

[LED lighting device and railing lighting equipment of embodiment]
The LED lighting apparatus and railing lighting installation of embodiment by this invention are demonstrated. The LED lighting device 100 of the present embodiment is a railing lighting device used, for example, in a railing lighting facility on a highway. As shown in FIGS. 1 to 5, a rectangular parallelepiped box-shaped housing 10 having an opening 11 on the front surface. A plurality of (three in the illustrated example) LED illuminating lamps 20 housed in the casing 10 with the horizontal direction of the casing 10 as the longitudinal direction, and LED lighting lamps The holding part 30 which hold | maintains 20 in a predetermined position in the housing | casing 10, the concave reflector 40 provided so that the back side of the LED lighting lamp 20 may be covered, and the louver 50 provided in the front side of the LED lighting lamp 20 And a translucent protective plate 60 provided on the front side of the louver 50 and a fixture 70 provided on the back side of the housing 10.

  The LED illumination lamp 20 is of a fluorescent lamp type, and has a translucent straight tubular cover 21, and is provided in the cover 21 along the longitudinal direction, and is disposed at an offset position near the center of the cover 21. Power supply to the heat dissipation substrate 22, the LEDs 23 arranged in a plurality along the longitudinal direction of the cover 21, the sealing member 24 that seals both ends of the cover 21, and the LED 23 that protrudes from the sealing member 24. It has the electrode 25 for supplying. The electrodes 25 are provided in pairs on each one end side (see FIG. 6).

  The cover 21 has a straight tube shape with both ends open, and a heat dissipation board 22 and an LED 23 are built in the cover 21. The cover 21 is formed of an opaque material that has translucency and diffuses light, and is formed of, for example, polycarbonate. By making the cover 21 opaque, it is possible to relieve the property as a point light source that the LED 23 has as a light irradiation characteristic, and to improve the uniformity of light irradiation.

  The cover 21 is formed with a pair of cover rails 211 and 211 extending in the longitudinal direction and projecting to the inner peripheral side. The cover rail 211 has a substantially L-shaped cross section and has a bent piece bent inward, and the bent pieces of the pair of cover rails 211 and 211 extend and face each other. The cover rail 211 is formed integrally with the cover 21 when the cover 21 is manufactured or retrofitted. For example, when the cover 21 having the cover rail 211 is formed integrally when manufacturing by resin molding, the cover rail 211 is easily formed. It can be formed in a suitable manner. The cover rail 211 is preferably formed of the same material as the cover 21.

  The heat dissipation board 22 is, for example, a long plate-like member made of aluminum, and is made of a material having excellent heat dissipation. The heat dissipation board 22 of this example includes an aluminum board main body 221 that is attached by being engaged with the cover 21, and an LED board 222 that is mounted with the LEDs 23 and is fixed to the board main body 221. Both substrates 222 are made of aluminum. The LED board 222 is fixed by being inserted into and engaged with board rails 223 and 223 formed on the board body 221, and a flat surface on the back side of the mounting surface of the LED 23 is joined to the board body 221. .

  The board body 221 is inserted into and engaged with a space formed between the inner periphery of the cover 21 and the cover rails 211 and 211, and is sandwiched between the inner periphery of the cover 21 and the cover rails 211 and 211. That is, the heat dissipation board 22 is engaged with and held by the pair of cover rails 211 and 211, and is disposed at an offset position that is close to the inner peripheral surface from the center of the substantially sectional view of the cover 21.

  A plurality of LEDs 23 are mounted in a row on a long flat LED substrate 222. The LED 23 is fixed to the side opposite to the offset position of the heat dissipation board 22 by fixing the LED board 222 to the side opposite to the offset position of the substrate body 221 of the heat dissipation board 22. The LED 23 of this example is provided at an offset position that is closer to the heat radiating substrate 22 side from the center of the cover 21 in a substantially sectional view.

  The holding unit 30 is a part that detachably holds the LED illumination lamp 20 and electrically connects the LED illumination lamp 20. The holding part 30 is provided with a lamp holder 32 so that the open side of the holding frame 31 having a C-shaped cross section is fixed to the back side of the housing 10 and protrudes from the holding frame 31 toward the LED illumination lamp 20. The LED lamp 20 is detachably held by a pair of lamp holders 32 and 32. The electrodes 25 and 25 at both ends of the LED lamp 20 are respectively inserted into curved electrode insertion holes of lamp holders 32 and 32 (not shown), and the LED lamp 20 is electrically connected to a lighting circuit (not shown) and the lamp The LED lighting 20 is held in a latched state by the holders 32 and 32. In this example, three pairs of lamp holders 32, which are a plurality of pairs, hold a plurality of three LED illumination lamps 20 in parallel, and the LED illumination lamps 20 are opened in the housing 10 by a holding portion 30. 11 is held in a predetermined direction on the 11 side.

  The reflector 40 has a concave shape in cross section and extends in the longitudinal direction, is provided so as to cover the offset position side of the LED lighting lamp 20, and the LED lighting lamp 20 is disposed on the concave side of the concave reflector 40. The In this example, the reflectors 40 corresponding to each of the plurality of LED illumination lamps 20 are formed in series, and the irradiation light of each LED illumination lamp 20 is reflected by the reflectors 40 that are concave in cross section. ing. By reflecting the light directly emitted by the LED 23 and the light indirectly emitted through the reflection of the cover 21 in the offset position direction or the like from the surface passing through the central axis of the LED lighting lamp 20 by the reflector 40. (Refer to the optical path L in FIG. 5), the light irradiation angle of the LED illumination device 100 can be very wide, for example, 300 °.

  The louvers 50 are provided on the side opposite to the offset position side of the LED illuminating lamp 20. The louvers 50 are arranged so that the longitudinal direction thereof is the lateral direction of the housing 10, and a plurality of louvers 50 are provided so as to be aligned in the longitudinal direction of the housing 10. It has been. Each louver 50 is attached so that both end portions thereof are held and the inclination angle can be adjusted. For example, each louver 50 is provided obliquely downward with respect to the irradiation direction of the illumination light of the LED illumination lamp 20.

  The protective plate 60 is formed of a light-transmitting material such as a glass plate or an acrylic plate, and is attached to the housing 10 at a position on the front side of the louver 50 so as to cover the opening 11 of the housing 10. The attachment 70 is for attaching the housing 10 to a predetermined attachment surface such as a wall surface or a ceiling surface. For example, an anchor bolt driven into the wall surface or the like, and a nut for fastening the housing 10 to the anchor bolt. Etc.

  When the LED lighting device 100 that is the railing lighting device of the present embodiment is a railing lighting facility such as an expressway, the longitudinal direction of the LED lighting lamp 20 and the longitudinal direction of the louver 50 are, for example, the lateral direction of the wall surface. The LED lighting device 100 is attached to the side wall 80 by the fixture 70, and the plurality of louvers 50 are arranged in the vertical direction of the wall surface. The light irradiation direction of each LED illumination lamp 20 is set so as to face the road surface in the horizontal direction. Each louver 50 is set so as to face obliquely downward with respect to the illumination direction of the illumination light of the LED lighting device 100, and it is possible to prevent glare from occurring on the driver of the vehicle traveling on the road.

  The LED lighting device 100 and the railing lighting installation of the above embodiment are arranged via the heat dissipation board 22 and the cover 21 by disposing the heat dissipation board 22 and the LED 23 at an offset position close to a part of the inner peripheral surface of the cover 21. The heat generated by the LED 23 can be effectively dissipated. At the same time, the offset direction of the heat dissipation substrate 22 and the LED 23 is set to the direction of the reflector 40, and the offset position is a position close to the reflector 40, whereby the LED 23 having high directivity is reflected by the reflection of the reflector 40 on the offset position side. The light irradiation angle can be greatly expanded.

  Further, by fixing the LED substrate 222 to the separated substrate body 221, the LED 23 can be easily mounted on the heat dissipation substrate 22. In addition, the structure in which the heat dissipation substrate 22 is engaged and held with the cover rail 211 formed integrally with the cover 21 allows the heat dissipation substrate 22 to be easily attached to the cover 21 and the offset positions of the heat dissipation substrate 22 and the LED 23. Can be easily arranged.

  In addition, the necessary and sufficient lighting performance required for railing can be obtained, and glare can be prevented from occurring in drivers of vehicles traveling on the road. Can be obtained at a cost.

[Modifications of Embodiment, etc.]
The invention disclosed in this specification is specified by changing these partial configurations to other configurations disclosed in this specification, in addition to the configurations of each invention, embodiment, and example, to the extent applicable. Or those specified by adding other configurations disclosed in this specification to those configurations, or those obtained by deleting these partial configurations to the extent that partial effects can be obtained, Is included. And the following modification etc. are included.

  For example, the number of the LED lighting lamps 20, the holding units 30, and the reflectors 40 in the LED lighting device 100 is appropriately set, and the reflectors 40 are not provided in series but are provided independently corresponding to each LED lighting lamp 20. It is good also as a structure. Further, the number of installed louvers 50 is also appropriate as necessary.

  Moreover, the LED illumination device of the present invention can be applied to an appropriate illumination device other than the railing illumination device. The invention disclosed in this specification also includes an LED lighting device that does not include a louver on the side opposite to the offset position of the LED lighting lamp, and may have a configuration in which a louver is not provided as necessary. For example, a tunnel illumination device installed on the ceiling surface of the tunnel, or a backlight illumination device for a display board installed in an interchange on a highway or the like can be used.

  The present invention can be used, for example, for railing on highways.

DESCRIPTION OF SYMBOLS 100 ... LED illuminating device 10 ... Housing 11 ... Opening 20 ... LED illuminating lamp 21 ... Cover 211 ... Cover rail 22 ... Heat radiation board 221 ... Board body 222 ... LED board 223 ... Board rail 23 ... LED 24 ... Sealing member 25 ... Electrode 30 ... Holding part 31 ... Holding frame 32 ... Lamp holder 40 ... Reflector 50 ... Louver 60 ... Protection plate 70 ... Mounting tool 80 ... Side wall

Claims (6)

A straight tubular cover having translucency, a heat dissipating board that is provided in the cover along the longitudinal direction, and at least a part of which is disposed at an offset position near the center of the cross-sectional view of the cover; and A fluorescent lamp type LED illumination lamp having LEDs fixed to the opposite side of the offset position and arranged in a plurality along the longitudinal direction of the cover;
While holding the LED illumination light detachably, a holding portion for electrically connecting the LED illumination light,
A concave reflector provided to cover the offset position side of the LED lighting;
A louver provided on the side opposite to the offset position of the LED lighting;
An LED lighting device comprising: The LED of the LED illuminating lamp is provided at an offset position close to the heat radiating substrate side from a substantially sectional view center of the cover,
The LED illumination device according to claim 1, wherein the cover is translucent and opaque.   2. The heat dissipation board of the LED lighting lamp comprises a board body that is attached by engaging with the cover, and an LED board that is mounted with the LED and is fixed to the board body. Or the LED lighting apparatus of 2.   The LED lighting device according to claim 3, wherein both the substrate body and the LED substrate are made of aluminum. A pair of cover rails that project inward and extend in the longitudinal direction are integrally formed on the cover of the LED lighting lamp,
5. The LED lighting device according to claim 1, wherein the heat dissipation substrate of the LED lighting lamp is engaged with and held by the pair of cover rails. The LED lighting device according to any one of claims 1 to 5 is provided on a side wall,
Arranged so that the longitudinal direction of the LED lighting lamp and the longitudinal direction of the louver are in the lateral direction of the wall surface,
A plurality of the louvers are arranged in the vertical direction of the wall surface,
Each of the louvers is directed obliquely downward with respect to the illumination direction of illumination light.