WO2011140779A1

WO2011140779A1 - Led bulb

Info

Publication number: WO2011140779A1
Application number: PCT/CN2010/077512
Authority: WO
Inventors: 史杰
Original assignee: Shi Jie
Priority date: 2010-05-14
Filing date: 2010-09-30
Publication date: 2011-11-17
Also published as: CN101825241B; CN101825241A

Abstract

An LED bulb comprises a lamp holder (1), a drive device (2), heat radiating blocks, LED light sources, a polyhedron light distribution optical device (5), a conductive supporting body (6) and a light transmitting cover (7), wherein the heat radiating blocks include a lower heat radiating block (3) and an upper heat radiating block (9), and the LED light sources include a lower LED light source (4) and an upper LED light source (8). The lower LED light source (4) is fixed to the lower heat radiating block (3) fixed to the lamp holder (1); the upper LED light source (8) is fixed to the upper heat radiating block (9) fixed to the inner top of the light transmitting cover (7). Two ends of the polyhedron light distribution optical device (5) are fixed respectively to the conductive supporting body (6), and two ends of the conductive supporting body (6) are supported respectively between the lower LED light source (4) and the upper LED light source (8). The LED bulb has a good heat radiating effect and a reasonable light distribution.

Description

LED bulb technology

The invention relates to a design structure of a light bulb with LED as a light source, and belongs to the technical field of LED semiconductor illumination. The LED light bulb refers to a light bulb with a light-emitting diode (LED) as a light source. Background technique

In the context of the current global energy shortages, the energy conservation is an important issue for us in the future. Light-emitting diode (LED) is a high-efficiency light source. It is widely used in automobiles, traffic lights, and screen displays due to its advantages of energy saving, environmental protection, long life, small size, and low energy consumption. , and even lighting and other fields. LED illuminators are LEDs that are light sources. When used as a lighting tool, LED bulbs (light bulbs with LEDs) can save more than 70% compared to incandescent and fluorescent lamps. With the development of application requirements, more and more high-power bulbs are needed. The existing LED bulbs use a single-ended LED light source, and the light is distributed by a one-way reflector, and all the heat is only dissipated through the single-ended heat sink block. Not only can the power not be able to meet the demand, the total output luminous flux of the LED bulb is low, and the unidirectional reflection light distribution loss is large, and the overall system efficiency is low.

There is also an LED bulb that integrates the LED light source on a stem and places it in a closed bulb for extremely low heat dissipation. The LED power cannot be made large, and the overall light output of the LED is low, which is difficult to meet customer requirements. Summary of the invention

The object of the present invention is to improve the deficiencies of the above-mentioned existing products, and provide a LED bulb with high luminous efficiency, light distribution, aesthetics, allegation, good heat dissipation effect, strong creativity and unique structure.

The object of the present invention is achieved as follows: An LED bulb includes a lamp cap, a driving, a heat dissipating block, and an LED light source; a translucent cover, wherein the heat dissipating block is divided into a lower end heat dissipating block and an upper end heat dissipating block, and the lower end heat dissipating block is fixed to the lamp cap. The upper end heat dissipating block is fixed on the inner top of the translucent cover, wherein the LED light source is provided with a lower end LED light source and an upper end LED light source, the lower end LED light source is fixed to the lower end heat dissipating block, and the upper end LED light source is fixed to the upper end heat dissipating block, The LED bulb is further provided with a polyhedron light distribution optics and a conductive support body. The two ends of the polyhedral light distribution optics are respectively fixed on the conductive support body, and the two ends of the conductive support body are respectively supported at the lower end LED light source and the upper end LED. Between the light sources.

Preferably, the polyhedral optical coupling device is a polyhedral optical junction of a prismatic surface or a spherical surface or a curved surface or a curved surface. Shape.

Preferably, the translucent cover of the LED bulb is a candle or a circle or a mushroom or an olive.

Preferably, the translucent cover of the LED bulb is composed of an optical grade polycarbonate or an optical lens made of plexiglass.

Preferably, the lower end source and the upper end source are geometrically symmetric about the polyhedral light distribution optics.

Preferably, the lower end light source or the upper end light source is composed of one or more LED light sources.

Preferably, the lower end heat sink block and the upper end heat sink block are made of metal or plastic.

The beneficial effects achieved by the present invention are:

The invention has the advantages of scientific and reasonable structure, convenient manufacture, processing and assembly, low cost, excellent interchangeability, good overall art, reasonable light distribution, beautiful appearance and long service life. The lower LED light source is fixed at the lower heat sink block, and the upper LED light source is fixed at the appropriate position on the upper heat sink block, which increases the heat dissipation area, and can quickly dissipate the heat generated by the upper and lower LED light sources, thereby improving the service life of the product. The surface of the polyhedral-shaped optical structure in the polyhedral optical distribution device may be a prismatic surface or a spherical surface or a curved surface or a curved surface. The polyhedral optical optical device has a reasonable effect on the light of the lower LED light source and the upper LED light source. The ground is emitted into the desired environment, allowing the light to be fully utilized in the LED bulb. At the same time, the polyhedron optical optics constitutes an optical light distribution system, which distributes the light generated by the lower LED light source and the upper LED light source reasonably, increases the illumination angle, and improves the light efficiency of the entire bulb.

DRAWINGS

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. 1 is a schematic cross-sectional view showing the structure of an LED light source to which the present invention is applied;

1 is a schematic exploded view showing the application of an LED light source of the present invention;

Figure 3 is an illumination effect diagram of an LED lamp without polyhedral light distribution optics;

Fig. 4 is a view showing the irradiation effect of the LED lamp of the present invention. In the figure: 1 lamp holder, 1 drive, 3 lower heat sink block, 4 lower end LED light source, 5 polyhedron light distribution optics > 6 conductive support, 7 transmissive cover, 8 upper LED light source, 9 upper heat sink. detailed description

As shown in FIG. 1 and FIG. 2, in this embodiment, two LED light sources are used, and four, six, and eight LED light sources can also be used. LED bulb, including a lamp cap 1, a driver 2, a heat sink block, an LED light source, a translucent cover 7, the heat dissipating block The lower end heat dissipating block 3 and the upper end heat dissipating block 9 are fixed to the lamp cap 1 , and the upper end heat dissipating block is fixed to the inner top of the translucent cover 7 , and the LED light source is provided with a lower end LED light source 4 and an upper end LED light source 8 . The lower end LED light source 4 is fixed to the lower end heat dissipating block 3, and the upper end LED light source 8 is fixed to the upper end heat dissipating block 9, which can quickly dissipate the heat generated by the upper and lower end LED light sources; the LED bulb is also provided with polyhedron light distribution optics inside. The device 5, the conductive support body 6, and the two ends of the polyhedron light distribution optics 5 are respectively fixed on the conductive support body 6. The two ends of the conductive support body 6 are respectively supported between the lower end LED light source 4 and the upper end LED light source 8.

Wherein, the polyhedral light distribution optical device 5 is a polyhedral optical structure shape of a prismatic surface or a spherical surface or a curved surface or a curved surface, and the transparent cover 7 is an optical lens made of polycarbonate or plexiglass, which is in the shape of a candle or a circle. Or mushroom or olive. The lower end light source 4 and the upper end light source 8 are geometrically symmetrically fixed to the upper end heat dissipating block 9 and the lower end heat dissipating block 3, respectively, to increase the heat dissipating area, and can quickly dissipate heat generated by the upper and lower end LED light sources. Going out, at the same time, the conductive support and the intermediate polyhedron optical optics 5 are fixed, which improves the service life of the product. The lower heat sink block 3 and the upper heat sink block 9 are made of metal or plastic.

The conductive support body 6 electrically connects the lower LED light source 4 and the upper LED light source 8 to energize the lower LED light source 4 and the upper LED light source 8, and directly supports the polyhedral light distribution optics 5 to make the structure of the bulb compact and firm. As shown in FIG. 4, the polyhedral light distribution optical device 5 distributes the light of the lower LED light source 4 and the upper LED light source 8 to the desired environment reasonably and effectively, so that the light can be fully utilized in the LED bulb, compared with If the polyhedron light distribution optics are not provided, as shown in FIG. 3, a large amount of light cannot be emitted from the transmissive cover, resulting in waste of energy. The polyhedron optical optic 5 is a polyhedral optical structure having a prismatic surface or a spherical surface or a curved surface or a curved surface. The translucent cover 7 of the LED bulb has a candle shape or a circular shape or a mushroom shape or an olive shape.

In summary, the LED lamp provided by the invention has the advantages of scientific and reasonable structure, convenient manufacture, processing and assembly, low cost, excellent interchangeability, good overall art, reasonable light distribution, beautiful appearance and long service life, and can satisfy the comparison. The demand for high power, the high utilization of electric energy and light energy, is conducive to energy conservation. In the end, it should be apparent that those skilled in the art can make various modifications and changes to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

Rights request

1. An LED bulb comprising a lamp cap (1), a driving (2), a heat dissipating block, an LED light source, and a transmissive cover (7), wherein the heat dissipating block is divided into a lower end heat dissipating block (3) and an upper end heat dissipating block (9) The lower end heat dissipating block is fixed to the lamp cap (1), and the upper end heat dissipating block is fixed to the inner top of the transmissive cover (7), wherein the LED light source is provided with a lower end LED light source (4) and an upper end LED light source (8) The lower LED light source (4) is fixed to the lower heat sink block (3), and the upper LED light source (8) is fixed to the upper heat sink block (9), and the LED bulb is further provided with a polyhedron light distribution optics (5), which is electrically conductive. The supporting body (6), the two ends of the polyhedron optical matching optical device (5) are respectively fixed on the conductive support body (6), and the two ends of the conductive support body (6) are respectively supported at the lower end LED light source (4) and the upper end Between the LED light sources (8).

The LED light bulb according to claim 1, wherein the polyhedral light distribution optical device (5) is a polyhedral optical structure shape of a prismatic surface or a spherical surface or a curved surface or a curved surface.

The LED light bulb according to claim 1, wherein the light transmissive cover (7) of the LED bulb is a candle or a circle or a mushroom or an olive.

The LED light bulb according to claim 1, wherein the translucent cover (7) of the LED bulb is composed of an optical lens made of polycarbonate or plexiglass.

5. LED light bulb according to claim 1, characterized in that the lower end light source (4) and the upper end light source (8) are geometrically symmetrical about the polyhedral light distribution optics (5).

The LED light bulb according to claim 1, characterized in that the lower end light source (4) or the upper end light source (8) is composed of one or more LED light sources.

The LED light bulb according to claim 1, characterized in that the lower end heat sink block (3) and the upper end heat sink block (9) are made of metal or plastic.