CN201412712Y

CN201412712Y - Densely-packaged LED light source

Info

Publication number: CN201412712Y
Application number: CN2009201088137U
Authority: CN
Inventors: 刘斌; 张保生; 常林
Original assignee: CHINA UNIVERSITY OF POLITICAL SCIENCE AND LAW
Current assignee: CHINA UNIVERSITY OF POLITICAL SCIENCE AND LAW
Priority date: 2009-06-10
Filing date: 2009-06-10
Publication date: 2010-02-24
Anticipated expiration: 2019-06-10

Abstract

The utility model relates to a densely-packaged LED light source. The densely-packaged LED light source comprises a plurality of annular light emitting surfaces stacked on each other at a preset distance; a plurality of circuit boards arranged on the plurality of annular light emitting surfaces; and a plurality of LEDs arranged on the light emitting surfaces and connected with the circuit boards,wherein the inner diameters of the plurality of annular light emitting surfaces increase gradually along the light emission direction. Accordingly, the heat generated by the LEDs during work can be transferred to peripheral radiating fins so as to keep the good operating state and prolong the service life of the LEDs.

Description

Densely packaged LED light source

Technical Field

The utility model relates to a lighting device, especially a densely packed LED light source.

Background

The light emitting diode has the advantages of energy conservation, long service life, good light emitting monochromaticity and the like, and has important application value in the aspects of white light illumination, large screen display, traffic signal lamps and the like. The electric power of a single high-power light emitting diode can reach 1W-5W at present, and the electric power is even larger, so that the high-power light emitting diode has an important role in illumination.

In a conventional led-based lighting unit, a plurality of leds are densely arranged in a plane. However, the packaged high-power light-emitting diode has a large volume, and more light-emitting diodes are difficult to place due to the limited space in the lamp. And the heat emitted by a plurality of light emitting diodes which are closely arranged is very large, so that the heat is difficult to dissipate in the limited space of the lamp, and the light emitting diodes are easy to damage. Therefore, more light emitting diodes are difficult to arrange in the lamp, and the output power of the lamp is difficult to be larger.

Therefore, it is an objective of the present invention to provide a solution to the above-mentioned problems.

Disclosure of Invention

The utility model aims at providing a LED light source of intensive encapsulation to solve among the prior art emitting diode arrange intensive, spotlight effect is not good and radiating effect is not good scheduling problem.

In order to achieve the above object, the present invention provides an densely packed LED light source, which includes:

the light emitting diode comprises a plurality of annular light emitting surfaces, a plurality of light emitting diodes and a plurality of light emitting diodes, wherein the plurality of annular light emitting surfaces are overlapped and spaced at a preset distance;

a plurality of circuit boards disposed on the plurality of annular light emitting surfaces;

a plurality of light emitting diodes disposed on the light emitting surface and connected to the circuit board; wherein,

the inner diameters of the annular luminous surfaces are sequentially increased along the light emitting direction.

Preferably, the shape of the annular light-emitting surface is a shape of a side surface of an inverted frustum.

Preferably, the LED further comprises a shaping lens set, wherein the shaping lens set is arranged on one side of the light emitting surface of the LED.

Preferably, the distances of the sequential difference between the inner diameters of the plurality of annular light emitting surfaces are based on the principle that the front annular light emitting surface does not block the light beam of the rear light emitting diode.

Preferably, the inner diameters of the annular light emitting surfaces are different by 1cm in sequence.

Preferably, the lighting device further comprises a plurality of radiating fins which are arranged around the annular light-emitting surface and connected with the annular light-emitting surface.

Preferably, the plurality of radiating fins extend out of the outer cover of the lamp.

Preferably, the light emitting diode is a visible light emitting diode, an ultraviolet light emitting diode or an infrared light emitting diode.

Preferably, the LED lamp further comprises a rechargeable battery or a storage battery, wherein the rechargeable battery or the storage battery is electrically connected with the circuit board and used for supplying power to the LED.

Preferably, the power supply device further comprises a power supply adjusting device, and the power supply adjusting device is connected between the circuit board and the mains supply.

Preferably, the annular luminous surface is a circular annular luminous surface, a regular polygonal annular luminous surface, a rectangular annular luminous surface or a triangular annular luminous surface.

The beneficial effects of the utility model reside in that: by the design of the structure, a plurality of light emitting diodes can be densely packaged, and the brightness of a light source is increased; the heat generated by the LED during operation can be quickly conducted to the peripheral radiating fins to keep a good working state and prolong the service life of the LED.

Drawings

Fig. 1 is a schematic front view of the compact LED light source of the present invention;

FIG. 2 is a schematic cross-sectional view taken along the line A-A of FIG. 1 according to the present invention;

FIG. 3 is another schematic cross-sectional view taken along line A-A of FIG. 1 according to the present invention;

FIG. 4 is a schematic cross-sectional view of the present invention with a shaping lens assembly;

FIG. 5 is a schematic cross-sectional view of another lens assembly with shaping lens according to the present invention;

FIG. 6 is a schematic cross-sectional view of an embodiment of the present invention with heat sink fins;

FIG. 7 is a schematic cross-sectional view of another embodiment of the present invention having heat sink fins;

fig. 8 is a schematic view of an embodiment of the present invention in which the annular light-emitting surface is a regular hexagon.

Description of reference numerals: 11-an annular light emitting face; 12-a light emitting diode; 13-a shaping lens group; 14-Heat sink.

Detailed Description

The above and further features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, a schematic front view of the densely packaged LED light source of the present invention and a schematic cross-sectional view along a direction a-a in fig. 1 are shown; the utility model discloses densely packed LED light source includes:

the light emitting structure comprises a plurality of annular light emitting surfaces 11, wherein the plurality of annular light emitting surfaces 11 are overlapped and spaced by a preset distance h (the distance h can be determined according to actual needs); a plurality of circuit boards (not shown) disposed on the plurality of annular light emitting surfaces 11; and a plurality of light emitting diodes 12 disposed on the plurality of annular light emitting surfaces 11 and connected to the circuit board. The inner diameters of the annular light-emitting surfaces 11 are sequentially increased along the light-emitting direction, and the arrangement mode can lead the light-emitting diodes to be densely packaged in the lamp and simultaneously has good lighting effect on the principle that the light beams of the light-emitting diodes are not influenced. Preferably, the inner diameters of the annular light-emitting surface 11 may have a difference of 1cm in sequence, so as not to block the light beam of the light-emitting diode.

Fig. 3 is another schematic cross-sectional view taken along a-a direction of fig. 1 according to the present invention; it can be clearly seen from the figure that the shape of the annular light-emitting surface 11 is an inverted circular truncated cone side surface shape, and because the light-emitting surface of the annular light-emitting surface is not on the same plane but is inclined by a certain angle (the size of the angle can be set according to actual needs), light emitted by the light-emitting diode can be gathered towards one direction, so that the brightness of the lamp is increased, and the lighting effect is better.

As shown in fig. 4 and 5, a shaping lens assembly 13 may be added, the shaping lens assembly 13 is disposed on the light emitting surface side of the light emitting diodes 12, the shaping lens assembly 13 may be a focusing lens, and light emitted by the light emitting diodes 11 passes through the shaping lens assembly 14 and then is emitted as parallel light.

As shown in fig. 6 and 7, the light emitting device further includes a plurality of heat dissipation fins 14 disposed around the annular light emitting surface 12 and connected to the annular light emitting surface 13, so as to effectively dissipate heat generated by the light emitting diode 12 and increase the service life of the light emitting diode 12. When the intensive LED light source forms a lamp, and the lamp is covered with an outer cover, the radiating fins are connected with the outer cover at the same time or extend out of the outer cover, so that a better radiating effect is achieved. The heat sink may be made of a metal or alloy material with a high thermal conductivity, such as aluminum, copper, or alloys thereof.

The utility model discloses still can include a rechargeable battery or battery, rechargeable battery or battery with circuit board electricity is connected, is used for giving emitting diode 12 supplies power. The light emitting diode 12 is a visible light emitting diode, an ultraviolet light emitting diode or an infrared light emitting diode.

The utility model discloses the LED light source of intensive encapsulation can send the light of single colour, also can export the light of multiple colour. If multiple colors of light are emitted, the output of each light is controlled by a switch.

The utility model discloses still include power adjusting device, power adjusting device connects between circuit board and the commercial power for adjust the power, make the power have more stable output.

In the present invention, the circular annular light emitting surface is adopted in the illustrated embodiment, as shown in fig. 1, but according to the requirement, the light emitting surface can also be a regular polygon annular light emitting surface (as shown in fig. 8), a rectangular annular light emitting surface or a triangular annular light emitting surface, and the arrangement mode thereof is the same as the circular annular light emitting surface, which is not described in detail herein, and those skilled in the art can also select light emitting surfaces with other shapes according to the actual requirement of the lamp, but all fall within the protection scope of the present invention.

The foregoing description is intended to be illustrative rather than limiting, and it will be understood by those skilled in the art that many modifications, variations, or equivalents may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A densely packed LED light source, comprising:

2. The densely packed LED light source as recited in claim 1, wherein the annular light emitting surface has a rounded truncated side shape.

3. The densely-packed LED light source as claimed in claim 1 or 2, further comprising a shaping lens set disposed on a side of the light-emitting surface of the LED.

4. The densely packed LED light source as claimed in claim 1, wherein the inner diameters of the annular light-emitting surfaces differ in sequence by a distance on the basis that the front annular light-emitting surface does not obstruct the light beams of the rear light-emitting diodes.

5. The densely packed LED light source of claim 1, further comprising a plurality of heat sinks disposed around and connected to the annular light emitting surface.

6. The densely packed LED light source as recited in claim 5, wherein the plurality of fins extend beyond the housing of the luminaire.

7. The densely packed LED light source of claim 1, wherein the light emitting diode is a visible light emitting diode, an ultraviolet light emitting diode, or an infrared light emitting diode.

8. The densely packed LED light source according to claim 1, further comprising a rechargeable battery or accumulator electrically connected to the circuit board for powering the light emitting diodes.

9. The densely-packed LED light source of claim 1, further comprising a power conditioning device connected between the circuit board and mains electricity.

10. The densely packed LED light source of claim 1, wherein the annular light emitting surface is a circular annular light emitting surface, a regular polygonal annular light emitting surface, a rectangular annular light emitting surface, or a triangular annular light emitting surface.