JP2010114033A - Led bulb for illuminating to which heat dissipation effect is characterized by high structure which can be irradiated in wide range - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED bulb which is high in dissipation effect enough to be capable of becoming a general illumination using an LED as the light source and a substitute light source of a mercury lamp. <P>SOLUTION: In the LED bulb, an aluminum plate 1 at which a radiation fin 2 is installed having a through-hole structure is formed in a mound type or in a wide angle conical form, the LED 3 is installed inside of its structure, a reflecting plate in which the reflecting plate (including reflecting mirror) 8 in the vicinity of the LED element is cut out is installed, and a normal temperature curing resin or a normal temperature curing glass material 12 containing an ultraviolet ray cut material is coated. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an LED light bulb for illumination characterized by a structure that has a high heat radiation effect and can irradiate a wide range.

In recent years when LED bulbs for illumination have been actively developed, there is only a structure for radiating heat generated from LED elements to be radiated by a heat radiating plate, and there are few heat radiating plates effective for natural air cooling.

Moreover, since the LED bulb currently sold generally does not have a good countermeasure against heat generation, there are only LED bulbs with low illuminance. Although LED bulbs are very expensive, they do not dissipate heat and have a short lifetime, so they are not used as main lighting at this stage.

JP 2006-156187 PR

The problem to be solved by the present invention is that the LED has a light emission mechanism different from that of the other light emitters, so that the LED is not omnidirectionally irradiated. Even in a chip LED having a relatively wide irradiation angle, the directivity angle is about 120 degrees. For this reason, LED bulbs that are generally sold have an irradiation angle of 15 to 70 degrees. In addition, each manufacturer manufactures the LED with a structure that dissipates the heat generated by the heat sink, but the heat dissipation is not performed well, so even if it is set at the rated current, the current due to the increase in ambient temperature due to the temperature increase of the LED Since the amount of electricity close to the maximum rating is energized by increasing the flow rate, it is not possible to dissipate heat, so the life is much shorter than the manufacturer's notation. Then, it is providing the LED light bulb characterized by the structure which has a high thermal radiation effect and can irradiate a wide range.

When the heat radiation of the heat sink installed in the LED bulb is manufactured by natural air cooling, it must be installed so that the fins of the heat sink are in the vertical direction so as to facilitate heat dissipation. However, most of the LED bulbs currently on the market have to set the optical axis of the bulb in the hanging direction, and the radiating fin has a structure that makes it difficult to obtain a cooling effect due to thermal convection. Therefore, the LED light bulb for illumination, which has a structure with high heat radiation effect and capable of irradiating over a wide range according to the present invention, has a structure in which a heat radiation fin is installed on a mountain-shaped or conical metal base and a through-hole structure is formed on the top of the head. As a result, the cooling effect by the thermal convection of the gas in the vicinity of the heat radiating fins and the temperature rise of the LED installation part due to the through-hole structure at the top of the head, the cooling effect of the light emitting part is obtained by the diffusion of the through-hole, and the LED manufacturer rated A long-life LED bulb can be manufactured at a set ambient temperature.

In addition, by arranging the LED installation surface in the conical or mountain-shaped inner direction and installing a reflector on the LED installation surface, the LED has sufficient irradiation power in the optical axis direction and good visibility from a wide range Can provide a light bulb.

The LED light bulb for illumination, which has a heat radiation effect and a structure that can irradiate a wide range according to the present invention, has a concave shape inward while a general LED light bulb has an LED installed on a flat base. About 70 degrees centered on the lamp axis is very bright due to the effects of both direct radiation of the radiated light from each LED, overlapping irradiation, and reflected light from the reflector.

Further, in terms of visibility from the side, the LED light bulb installation point is almost horizontal and has a radiation angle of about 170 degrees around the lamp axis. Since the brightness is high, visibility from a distance is good, and the illumination ability is high. About 70 degrees centering on the lamp axis in the direct direction is very bright, and glare is difficult to occur, so large bulbs are mercury lamps in factories, facilities, and roads. The small light bulb that can be used as an alternative light source can be used as a general household light bulb.

The LED light bulb for illumination, which has a structure with high heat radiation effect and capable of irradiating over a wide area according to the present invention, increases the heat radiation efficiency and uses the double radiation effect, so that the illumination intensity is 2000 lx or more at a distance of 1 m with a power consumption of only 48 W. Have This is a brightness of 1760 lx or more of a 400 W mercury lamp (actual power consumption 600 W), making it possible to provide a long-life and energy-saving light bulb.

The best mode for carrying out the invention is limited to increasing the heat radiation effect of the natural heat radiation fin. The heat generated from the LED is set in a shape that widens the fin spacing of the heat dissipating fins and combines them in a chevron shape to increase the air permeability and effectively dissipate the fins. In addition, by disposing the LED in the concave shape of the chevron-shaped radiating fin and providing a through hole for heat dissipation, the high temperature gas at the top of the concave shape is released from the through hole at the concave top part and the radiating fin is molded into a chevron The fins are cooled by diffusion with the accumulated high-temperature gas.

In addition, the heat sink with the LED installed is formed into a mountain shape or a wide-angle conical shape, the LED is installed inside the structure, and the reflector near the LED element is cut out on the LED element installation surface (reflector mirror) If the reflector (including the reflector) is placed in a shape that connects both sides of the mountain in order to prevent diffused radiation from side to side, the cone or quadrangle shape with the LED bulb at the top is illuminated brightly To do.

The LED bulb's lateral illumination ability has an illumination angle of 165 ° to 176 ° that is almost horizontal to the LED bulb's light emission part, but the illumination power to the side is weak even though the luminance is high, so it is visible from a distance. Excellent structure and no glare.

Moreover, the LED element is weak to ultraviolet rays, and its lifetime is extremely shortened due to element destruction caused by ultraviolet rays such as sunlight. Therefore, by applying a room-temperature-curing resin or room-temperature-curing glass material that contains UV-cutting materials (titanium oxide, etc.) to the LED element installation surface of the LED bulb, the LED element can be prevented from UV degradation, We improved the moisture and antiseptic action and made it possible to manufacture LED bulbs that can be used for a long time.

Hereinafter, based on the Example of this invention, it demonstrates using drawing.
FIG. 1 is a view in which a heat sink in a side cross-sectional explanatory view of claim 1 of the present invention is manufactured in a mountain-shaped structure, and an LED is arranged on the concave side of the heat sink.

For example, a base 4 in which a plurality of LEDs 3 (including symbols in parentheses) having a directivity angle of 120 degrees are disposed on the concave side of an aluminum plate 1 having heat radiation fins 2 shaped in a mountain shape with a concave angle of 120 degrees, A reflecting plate (including a reflecting mirror) 8 formed by hollowing out the LED 3 arrangement portion described in 3 is installed. In addition, a reflection plate (including a reflecting mirror) 11 for preventing diffusion of radiated light in the front-rear direction is disposed to irradiate the reflected light repeatedly. The LED 3 (a) irradiates 120 degrees between the radiated light 6 (a) and the radiated light 6 (b) with the optical axis 5a as the center, but the upper radiated light from the portion of the radiated light 6 (e ') is reflected by the reflector (reflected). The reflected light 7 (a) is in the same direction as the optical axis 5 (a) of the LED 3 (a) due to the 8). The LED 3 (a ′) irradiates 120 degrees between the radiated light 6 (a ′) and the radiated light 6 (b ′) centered on the optical axis 5 (a ′). The emitted light 6 (b) and the emitted light 6 (b ') pass through the same position almost horizontally.

The emitted light 6 (e) and emitted light 6 (e ′) emitted from the LEDs 3 (a) and 3 (a ′) are the extreme positions of the emitted light from the bulb bottom, and the illumination angle of the bulb is 170 degrees. That's it.

LED 3 (b) and LED 3 (b ′) also irradiate the emitted light 6 (c) to the emitted light 6 (d) and the emitted light 6 (c ′) to the emitted light 6 (d ′) at 120 degrees. The radiated light between the radiated light 6 (d) and the radiated light 6 (f) and between the radiated light 6 (d ′) and the radiated light 6 (f) is caused by the reflector 8 (including the reflecting mirror). Is reflected in the direction of the optical axis.

Ascending and diffusing together with the gas at the upper part of the radiating fin 2 that is difficult to diffuse by radiating and radiating the radiant heat from the LED 3 accumulated in the concave upper part of the bulb through the through-hole 9 provided at the top of the LED bulb. Increase heat dissipation effect.

FIG. 2 is a front perspective view of the illumination LED bulb according to claims 1 and 5.
A room temperature curing resin containing an ultraviolet cut material (such as titanium oxide) by attaching a base plate 4 on which an LED 3 is installed and a reflector plate (including a reflector) 8 in which the LED 3 is disposed to an aluminum plate 1 on which heat radiating fins 2 are installed. Or the room temperature hardening glass material 12 is apply | coated and the element destruction of LED3 by an ultraviolet-ray is prevented.

  FIG. 3 is a front view of the lighting LED bulb according to claim 2. The high-temperature gas is emitted through the through-hole 9 at the top of the wide-angle cone according to claim 3 due to the emission heat emitted from the LED 3 installed inside the cone, and heat is emitted from the radiating fins 2 outside the wide-angle cone. It rises and diffuses with the conducted gas.

  The LED light bulb for illumination according to the present invention is disclosed in JP 2005-158472, JP 2005-327479, JP 2006-005264, JP 2006-190559, JP 2006-302803, and design registration. 2004-16407, which is the final form of the invention applied for in partial design, etc., and is a light bulb that can be used not only for indoor / outdoor lighting but also for general light bulbs.

It is side sectional explanatory drawing of the LED bulb for illumination of Claim 1. It is a front direction perspective view of the LED light bulb for illumination of Claim 1. It is a front view of the LED light bulb for illumination of Claim 2.

Explanation of symbols

1 Aluminum plate 2 Heat radiation fin 3 LED
3 (a) LED
3 (a ') LED
3 (b) LED
3 (b ') LED
4 Base 5 Optical axis 5 (a) Optical axis 5 (a ') Optical axis 5 (b) Optical axis 5 (b') Optical axis 6 Radiated light 6 (a) Radiated light 6 (a ') Radiated light 6 (b ) Synchrotron radiation 6 (b ') synchrotron radiation 6 (c) synchrotron radiation 6 (c') synchrotron radiation 6 (d) synchrotron radiation 6 (d 'synchrotron radiation 6 (e) synchrotron radiation 6 (e') synchrotron radiation 6 ( f) Synchrotron radiation 6 (f ′) Synchrotron radiation 7 (a) Reflection light 7 (a ′) Reflection light 7 (b) Reflection light 7 (b ′ Reflection light 8 Reflection plate 9 Through hole 10 Lamp shaft 11 Reflection plate 12 Ultraviolet light Cold-curing resin or cold-curing glass material containing cut materials (such as titanium oxide)

Claims (5)

An LED light bulb for illumination, characterized in that a heat dissipation plate having LEDs is formed in a mountain shape, and an LED is installed inside the structure, which has a high heat dissipation effect and a structure that can irradiate a wide range. An LED light bulb for illumination characterized by a structure in which a heat radiation plate is formed in a wide-angle conical shape and an LED is installed on the inner side of the structure, so that a heat radiation effect is high and a wide range of illumination is possible. A reflector (including a reflector) obtained by punching a reflector in the vicinity of the LED element on the LED element installation surface of the LED bulb having the structure according to claim 1 or 2, and an object of preventing diffusion of radiation light to the side LED lighting bulb characterized by a structure that connects both sides of the mountain with a reflecting plate (including a reflecting mirror) and has a high heat radiation effect and a structure that can irradiate a wide range. An illumination characterized by having a through-hole structure that radiates and radiates heat from the LED to the outside in the concave portion or conical top portion of the LED bulb having the structure according to claim 1 or claim 2, and a structure that has a high heat radiation effect and can irradiate a wide range. LED bulb. A structure having a high heat dissipation effect and capable of irradiating over a wide area by applying a room-temperature-curing resin or a room-temperature-curing glass material containing a UV-cutting material (titanium oxide, etc.) to the LED element installation surface of the LED bulb having the structure of claim 1 LED bulb for lighting characterized by.