JP2010033862A - Led lighting panel for outdoor use - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED lighting panel which is suitable for installing outdoors such as a guide light, an outdoor light, an emergency light, a sign, an advertisement or the like. <P>SOLUTION: The LED lighting panel includes a light guide plate (11) having a semi-cylindrical shape with a curvature capable of fitting into an outer peripheral surface of a utility pole (20), an LED unit (14) arranged on an end face in a light-propagating direction of the light guide plate and emitting light into the light guide plate, a reflecting plate (12) arranged at a back side of the light guide plate and being a semi-cylindrical shape capable of fitting into the outer surface of the utility pole and reflecting the propagating light forward, and metal fittings (15) for mounting the light guide plate and the reflecting plate on the utility pole. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an outdoor LED lighting panel, and more particularly to an LED lighting panel that is optimal for installation outdoors such as a guide light, an outdoor light, an emergency light, a sign, and an advertisement.

  For example, guide lights and signs exhibit an important function of guiding residents to evacuate and pass in the event of a disaster such as an earthquake or during outdoor traffic at night. In conventional guide lights and signs, letters and designs are drawn on metal plates and plastic plates, and the plates are fixed to the pillars that stand on the shoulders of the road, or the plates are suspended from high pillars and utility poles. Not only did it interfere with traffic, but it was difficult to see at night.

  On the other hand, LED lighting panels in which light of a plurality of LEDs is incident on a light guide plate and propagated, reflected by a dot pattern of the light guide plate, and light emitted from a front display plate have been put into practical use (Patent Literature). 1, Patent Document 2).

JP 2004-265813 A JP 2008-130336 A

  However, since the conventional outdoor LED lighting panel is hung from a high column, there is still a possibility that the column needs to be erected on the road shoulder or the like, which may hinder traffic.

  This invention makes it a subject to provide the outdoor LED lighting panel which enabled it to install easily, without raising a support | pillar on a road shoulder etc. in view of this problem.

  Therefore, an outdoor LED lighting panel according to the present invention is provided on a light guide plate having a semi-cylindrical shape with a curvature that can be fitted to the outer peripheral surface of a utility pole, and provided on an end surface in the light propagation direction of the light guide plate. An LED unit that enters light, a reflective plate that is provided on the back side of the upper light guide plate and has a curvature that can be fitted to the outer surface of the utility pole, and reflects the propagating light forward, and the light guide plate And a mounting bracket for mounting the reflecting plate to the utility pole.

  One of the features of the present invention resides in that the light guide plate is formed in a semi-cylindrical shape and is fitted and attached to the outer peripheral surface of the utility pole. As a result, the LED lighting panel can be installed without standing upright, so that traffic is not disturbed and the installation work is simple.

  Moreover, since it is made to attach to the outer peripheral surface of a utility pole instead of hanging from a high support | pillar, an LED lighting panel can be installed in the height of a human eye, and it is easy to visually recognize regardless of day and night. As a result, it is not only useful for guide lights and signs at the time of disasters and night traffic, but can also be applied to outdoor lighting, emergency lights, advertising panels, etc., and its usefulness is great.

  When the light guide plate is curved in a cylindrical shape, if the curvature is large, there is a possibility that light incident on the light guide plate cannot be propagated. Therefore, it is necessary to form the light guide plate and the reflection plate in a semi-cylindrical shape so that the curvature radius R of the reflection plate is 150 mm or more when the light guide plate has a thickness of 2 mm to 8 mm.

  The power source of the LED unit may be a commercial power source or a battery, but in consideration of maintainability, it is preferable to provide a solar panel to drive the LED unit.

  The light guide plate is not particularly limited as long as it is a material having sufficient translucency, and a thermoplastic resin or a thermosetting resin can be adopted. However, considering the point of being installed outdoors, for example, a polycarbonate resin is preferable.

  Moreover, LED (Light Emitting Diode; light emitting diode) may use red LED, blue LED, and green LED by a single color, and can also be used in combination.

  Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. 1 to 4 show a preferred embodiment of an outdoor LED lighting panel according to the present invention. The LED lighting panel 10 of this example is manufactured in a semi-cylindrical shape having a height of 500 mm, a lateral length L of 540 mm, and a radius of curvature R of 174 mm corresponding to the size of the utility pole 20 (radius 172 mm, outer periphery 1080 mm). The mounting bracket 15 and a fastening band (not shown) are attached to the outer peripheral surface of the utility pole 20.

  The LED lighting panel 10 is configured by laminating a light guide plate 11, a reflection plate 12 and a front panel 13, and the light guide plate 11, the reflection plate 12 and the front panel 13 are manufactured using a polycarbonate resin, and both ends of the LED lighting panel 10. Is mounted with an LED unit 14 using a commercial power source as a power source so that light enters the light guide plate 11.

  In addition, light reflecting dot portions are formed on the back surface of the light guide plate 11 by, for example, laser processing, and the light reflecting dot portions are formed so that the density or area increases toward the center of the light guide plate 11.

  On the front panel 13, characters and designs corresponding to the use, for example, characters and designs for evacuation guidance and advertising are engraved or drawn by screen printing or the like. In the case of night illumination, the front panel 13 may be left blank, or advertising advertisements may be printed.

  The LED lighting unit 10 of this example covers the outer periphery of the utility pole 20 at a height of 1500 mm to 2000 mm of the utility pole 20, hooks a fastening band (not shown) to the mounting bracket 15, and tightens the fastening band for attachment.

  When the LED is driven by a drive circuit in the LED unit 14, light enters the light guide plate 11 from the side and propagates through the light guide plate 11. At this time, the light is reflected by the light reflecting dot portion and the reflection plate. 12 is reflected forward to illuminate the front panel 13.

  Since the LED lighting unit 10 is mounted at the eye level of the utility pole 20, it is easy to visually recognize, can efficiently perform evacuation guidance, traffic guidance, and night illumination, and is also useful for advertising.

  Moreover, since it hardly protrudes from the utility pole 20, it does not get in the way of traffic and does not impair the townscape and landscape.

  Although the LED unit 14 uses a commercial power source as a power source, a solar panel can also be used as a power source. In this case, the solar panel may be provided separately from the LED lighting panel 10 or may be provided at the position of the reflector 12.

It is the schematic which shows the state which attached preferable embodiment of the outdoor LED lighting panel which concerns on this invention to the utility pole. It is a perspective view which shows the said embodiment. It is a top view which shows the said embodiment. It is a block diagram which shows the principal part in the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Outdoor LED lighting panel 11 Light guide plate 12 Reflector 13 Surface panel 14 LED unit 20 Utility pole

Claims (3)

A light guide plate having a semi-cylindrical shape with a curvature that can be fitted to the outer peripheral surface of the utility pole;
An LED unit that is provided on an end surface of the light guide plate in the light propagation direction, and that enters light into the light guide plate;
A reflective plate that is provided on the back side of the light guide plate, has a curvature semi-cylindrical shape that can be fitted to the outer surface of the utility pole, and reflects the propagating light forward;
Mounting brackets for mounting the light guide plate and the reflection plate to the utility pole,
An LED lighting panel for outdoor use, comprising:   2. The outdoor use according to claim 1, wherein the light guide plate and the reflection plate are formed in a semi-cylindrical shape such that the light guide plate has a thickness of 2 mm to 8 mm and a curvature radius R of the reflection plate is 150 mm or more. LED lighting panel.   The outdoor LED lighting panel according to claim 1, further comprising a solar panel for driving the LED unit.

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