JP2012033452A - High ceiling lighting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting lamp capable of efficiently releasing heat generated at LED light sources.SOLUTION: The LED lighting lamp 4 is structured by putting a reflecting shade 5 on an LED lighting unit 1 through a support part. The LED lighting unit 1 is structured of a plurality of plate-shape modules 3 by attaching a ceramic substrate 9 mounting one or a plurality of LED light sources 2 on an inside of a support member 8 having ruggednesses and covering it with cover glass 10, and the plate-shape modules are arranged in a cylindrical shape with a gap between each other. The reflecting shade 5 is of nearly a truncated conical shape with an opening at an upper part.

Description

  The present invention relates to an LED illumination lamp.

  Since the light emitting diode has a high efficiency of converting electric energy into light, consumption of electric energy can be saved. Furthermore, light emitting diodes have features such as long life and no environmental impact due to mercury contamination. Due to their future potential, technology development related to light emitting diodes has been actively conducted as a next-generation lighting technology.

  As one of the problems in the technical development of light emitting diodes, there is a problem that conventional LED lighting cannot sufficiently release the heat generated when trying to obtain a large amount of light.

  As an example of the prior art having a heat dissipation effect, there is an invention disclosed in Japanese Unexamined Patent Application Publication No. 2004-296245. In this case, air is introduced from the tip of the substantially cylindrical support member, and the air is caused to flow out from a plurality of heat radiation holes provided at the other tip of the support member.

JP 2004-296245 A

Due to the heat dissipation effect of the conventional technology, it is possible to suppress the heat generation of the LED light source and arrange a large number of LED light sources.

  However, in lighting installed on a high ceiling such as a gymnasium, an illuminating lamp capable of obtaining a large amount of light by arranging a higher-density LED light source is required.

  Therefore, the present invention provides an LED illuminating lamp having a sufficient heat dissipation effect to obtain a large amount of light.

Means for Solving the Invention

  The LED lighting unit according to the present invention includes a plurality of plate-like modules on which a plurality of LED light sources are mounted. In addition to having a structure for generating air flow by arranging the plate modules in a cylindrical shape, the heat dissipation effect is further enhanced by arranging the plate modules with a gap therebetween. To do.

  The LED illuminating lamp according to the present invention is characterized in that the LED lighting unit is covered with a reflective cone having a truncated cone shape having a reflecting surface on the inner surface via a support portion.

  The substantially truncated cone shape refers to a shape in which a cone and a cone are expanded outwardly, and a top portion is cut to provide an opening.

  The upper part of the opening has nothing to block the flow of air, such as a fitting such as a base, and exhibits an excellent heat dissipation effect.

The invention's effect

The heat generated from the LED light source is transmitted to the support member through the ceramic substrate. Concavities and convexities are provided on the side surface of the support member, so that heat exchange with the air inside the LED illumination unit is performed smoothly. The air inside the LED lighting unit is warmed and raised by the support member, and diffuses into the atmosphere through the opening in the upper part of the reflective shade. At the same time, since the air outside the LED lighting unit flows into the LED lighting unit through the gap between the plate-like modules, the air inside the LED lighting unit can be circulated efficiently, and a larger number of LED light sources can be attached than before. It is possible to obtain a large amount of light.

  Since an opening is provided in the upper part of the reflective shade, even if the reflective shade is installed, the air circulation is not hindered and a high heat radiation effect can be maintained.

Lower perspective view of LED lighting Front view of LED lighting LED cross section and air flow Horizontal sectional view of LED lighting unit and air flow Front view of LED lighting unit Bottom view of LED lighting unit Top view of LED lighting Perspective cross-sectional view of a plate module Cross section of decorative board

Hereinafter, in order to clarify the present invention, embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 and 3, the LED illumination lamp 4 of the present invention includes an LED illumination unit 1 and a reflective shade 5 that covers the LED illumination unit via a support portion 6.

  As shown in FIGS. 4 and 5, the LED lighting unit 1 is formed by arranging a plurality of plate modules 3 in a cylindrical shape, and the plate modules are arranged with a gap therebetween.

  As shown in FIG. 8, the plate-like module 3 is formed by mounting a ceramic substrate 9 on which one or a plurality of LED light sources 2 are mounted inside a support member 8 and covering a cover glass 10 made of, for example, polycarbonate. It is a plate-like module. The support member is provided with irregularities 12 for increasing the surface area for the purpose of enhancing the heat dissipation effect.

  The ceramic substrate 9 and the support member 8 are joined together by an adhesive 11 such as a silicone resin. The adhesive preferably uses a material having a thermal conductivity of 1 W / mK or more and a thickness of 0.5 mm or less in order to quickly dissipate the heat generated from the LED light source 2 toward the support member 8. .

  The support member 8 is made of a light metal having high thermal conductivity, such as aluminum, and has a shape that increases the surface area by providing a plurality of irregularities 12 on the surface in order to improve heat dissipation. . In addition, alumite treatment is applied to chemically stabilize the surface of the support member.

  As shown in FIG. 1, a decorative plate 13 is installed at the bottom of the LED lighting unit 1 to cover the inside of the LED lighting unit and keep its beauty. The decorative board has a plurality of through holes, and an LED module is attached to the upper part of the through holes via a condenser lens 14 as shown in FIG.

  Further, an opening 7 is provided on the upper part of the reflective shade 5 connected to the LED lighting unit 1 through a support portion, as shown in FIG. 7, and air circulation occurs through the opening. Even if the reflective shade is installed, the heat dissipation effect is not impaired.

  As shown in FIG. 5, a support portion 6 for connecting to the reflective shade 5 is provided at the top of the LED lighting unit 1, and the length of the support portion is adjusted in the height direction so that the LED illumination lamp It is possible to adjust the light distribution of the light emitted from. It becomes possible to irradiate at a wide angle by elongating the support portion 6 and disposing the LED illumination unit 1 downward. Moreover, it becomes possible to illuminate a narrow range with high illuminance by shortening the support portion 6 and disposing the LED illumination unit 1 upward.

  Next, the heat radiation action according to the present invention will be described. Heat generated by causing the LED light source 2 to emit light is first transmitted to the ceramic substrate 9, and then transferred to the aluminum support member 8 having a high thermal conductivity through the adhesive 11. Since the side surface of the support member has irregularities 12 and the area in contact with the air inside the LED lighting unit is increased, heat exchange is performed efficiently. Further, as shown in FIGS. 3 and 4, the warmed air rises toward the opening 7 and is released to the outside of the LED illumination lamp 4. At the same time, the air outside the LED lighting unit flows into the LED lighting unit from the gap between the plate-like modules and the lower part of the LED lighting unit 1, and air circulation occurs. Thereby, the temperature rise of the LED light source is suppressed, it becomes possible to mount a large number of LED light sources, and a large amount of light can be obtained.

  Next, the glare reduction effect accompanying the product of the present invention will be described. Most of the light generated from the LED light source 2 is reflected by the reflective shade 5 and irradiated onto the floor surface. Therefore, since it appears to the person on the floor that the entire reflective shade is emitting light, the proportion of direct light from the LED light source is reduced, and according to the LED illumination lamp of the present invention, glare can be reduced. Is possible.

  Since the LED light source attached to the decorative board 13 shown in FIG. 1 is focused for the purpose of illuminating the LED illumination light directly below, unless it is looked up from directly below the LED illumination light, it is not possible to feel dazzling. Absent.

DESCRIPTION OF SYMBOLS 1 LED illumination unit 2 LED light source 3 Plate-shaped module 4 LED illumination lamp 5 Reflecting shade 6 Supporting part 7 Opening part 8 Supporting member 9 Ceramic substrate 10 Cover glass 11 Adhesive 12 Concavity and convexity 13 Decorative plate 14 Condensing lens

Claims (3)

An LED lighting unit in which a plurality of plate-like modules mounted with a plurality of LED light sources are arranged in a cylindrical shape with a gap between each other. A plurality of plate modules mounted with a plurality of LED light sources are arranged in a cylindrical shape with a gap between each other, a substantially truncated cone-shaped reflective shade with a reflective surface on the inner surface, and a support portion LED lighting lamps covered. The LED illumination lamp according to claim 2, wherein the reflection shade has an opening at an upper portion thereof.

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