CN106287329A - Liquid-cooled high-power LED projection lamp - Google Patents

Abstract

The invention relates to a liquid-cooled high-power LED projection lamp, which comprises: the LED light source comprises a plurality of LED units, one end face of the LED light source is a first heat dissipation surface, and the other end face of the LED light source is a second heat dissipation surface; the cooling head device comprises a first cooling head and a second cooling head, wherein the first cooling head is arranged on the first heat dissipation surface, and the second cooling head is arranged on the second heat dissipation surface; and the cooling device is respectively connected with one end parts of the first cooling head and the second cooling head by the heat dissipation pipeline, and is respectively connected with the other end parts of the first cooling head and the second cooling head by the return pipeline.

Description

Liquid Cooled High Power LED Projector Light

technical field

The invention relates to an LED projection lamp, in particular to a high-power LED projection lamp utilizing liquid cooling for heat dissipation.

Background technique

Existing light sources are mainly used for lighting, but with the evolution of the times, they are gradually endowed with different life, such as the backlight display of the screen or the colorful light effect of the stage, all of which have changed from the past that the light source can only be used as lighting Stereotype; however, the previous light source has the disadvantages of large size, power consumption and not long service life, so that users have to replace the light source every once in a while, and the power consumption of the light source also makes users love and hate it. In addition, due to the volume problem, it needs to take up a lot of space in use. These shortcomings either limit the use of light sources or increase the burden on the use of light sources; however, since the appearance of LEDLight-Emitting Diode, it has greatly changed. In spite of previous impressions of light sources, LEDs have been widely used in today's society due to their advantages of small size, power saving and long service life, which completely subvert the shortcomings of previous light sources.

Due to the evolution of technology, today's LED has developed into a grain type, making the LED smaller, thinner and more energy-saving; however, although the current LED has many advantages as a light source, there is still a fatal shortcoming , is the heat dissipation problem. If you use several LEDs, you only need to use cooling fins to achieve the purpose of heat dissipation. However, if you use LEDs in places such as display walls or large light sources such as stage lights, the number of LEDs required is often hundreds or even Tens of thousands, the heat generated by it cannot be handled by the cooling fins. However, if the heat is not properly handled, it will cause the LED to overheat and burn out.

In addition, general heat dissipation methods, such as using heat dissipation fins and attaching heat dissipation fins to several LED dies, will undoubtedly increase the volume and hinder the appearance. In addition, heat dissipation fins can only be used on the back of the LED, otherwise It will affect the light emission. These problems also reveal the problems of the heat dissipation technology used in the past.

In view of the above problems, how to effectively solve the heat dissipation problem of LEDs will be a problem that researchers in the technical field of the present invention should study hard.

Contents of the invention

The main technical problem to be solved by the present invention is to overcome the above-mentioned defects existing in the prior art, and provide a liquid-cooled high-power LED projection lamp, which can effectively solve the problem of heat dissipation of LED, so as to achieve the purpose of effective heat dissipation; While achieving the purpose of heat dissipation, it can also achieve the purpose of being beautiful and not hindering the light emission, and at the same time, it can dissipate heat for the phosphor.

The technical solution adopted by the present invention to solve its technical problems is:

A liquid-cooled high-power LED projection lamp, which includes: an LED light source, which includes several LED units, one end surface of the LED light source is a first heat dissipation surface and the other end surface is a second heat dissipation surface; a cooling head A device comprising a first cooling head and a second cooling head, the first cooling head is arranged on the first heat dissipation surface, and the second cooling head is arranged on the second heat dissipation surface; and a cooling system, which includes A cooling device, a heat dissipation pipeline and a return pipeline, the cooling device is respectively connected to one end of the first cooling head and the second cooling head through the heat dissipation pipeline, and is connected to the first cooling head through the return pipeline The head and the other end of the second cooling head are connected.

The present invention also includes following technical characteristics:

The first cooling head is a transparent structure.

The LED light source further includes a fluorescent layer between the LED unit and the first cooling surface.

Phosphor powder is placed in the first cooling head, and a filter is included between the first cooling head and the return pipeline and between the first cooling head and the heat dissipation pipeline.

The cooling system is a water-cooling cooling system. The cooling device also includes a heat dissipation unit, a water storage unit and a pump unit. The heat dissipation unit includes a heat dissipation row and a fan. One end of the water storage unit is connected to the heat dissipation unit. The other end is connected to the pump unit, the end of the heat dissipation unit different from the water storage unit is connected to the return pipeline, and the end of the pump unit different from the water storage unit is connected to the heat dissipation pipeline.

A soft light unit is arranged on the end face of the first cooling head opposite to the LED light source.

The light diffusing unit is provided with a light concentrating unit opposite to the end surface of the first cooling head.

The present invention can also be a liquid-cooled high-power LED projection lamp, which includes: an LED light source, which includes several LED units; a cooling head device, which includes an accommodating space for the LED light source and a cooling system, which includes a cooling device, a heat dissipation pipeline and a return pipeline, the cooling device is connected to an end of the cooling head device through the heat dissipation pipeline, and is connected to the cooling head device through the return pipeline. The other end of the head unit is connected.

It includes the following technical features:

The cooling system is a water-cooling cooling system, the cooling head device is a light-transmitting structure, and a fluorescent layer is arranged on the end surface of the cooling head device opposite to the LED light source.

The cooling device also stores an appropriate amount of non-conductive cooling liquid, and a transparent single crystal aluminum oxide layer is also included between the fluorescent layer and the water cooling head device.

The invention has the beneficial effects of effectively solving the heat dissipation problem of the LED to achieve the purpose of effective heat dissipation; while effectively achieving the purpose of heat dissipation, the LED can also achieve the purpose of being beautiful and not hindering light emission, and at the same time, it can dissipate heat for the fluorescent powder.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic structural diagram of the first embodiment of the present invention.

Fig. 2 is a partial structural schematic diagram of the first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the second embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a third embodiment of the present invention.

Explanation of symbols in the figure:

1. 1a LED light source 11. 11a LED unit

12 The first cooling surface 13 The second cooling surface

14, 14a fluorescent layer 15 soft light unit

16 Concentrating unit 17 Single crystal aluminum oxide layer

2. 2a cooling head device 21 accommodation space

22 The first cooling head 23 The second cooling head

24 phosphor 25 filter

3 cooling system 31 cooling device

32 Heat dissipation pipeline 33 Return pipeline

311 cooling unit 312 water storage unit

313 Pump Unit 3111 Radiator

detailed description

Please refer to Fig. 1 to Fig. 2, which are the first preferred embodiment of the present invention. In order to achieve the above purpose, the present invention is a liquid-cooled high-power LED projection lamp, which includes:

An LED light source 1, which includes several LED units 11, one end surface of the LED light source 1 is a first heat dissipation surface 12 and the other end surface is a second heat dissipation surface 13;

A cooling head device 2, which includes a first cooling head 22 and a second cooling head 23, the first cooling head 22 is arranged on the first cooling surface 12, and the second cooling head 23 is arranged on the second cooling head face 13; and

A cooling system 3, which includes a cooling device 31, a heat dissipation pipeline 32 and a return pipeline 33, the cooling device 31 is connected to an end of the first cooling head 22 and the second cooling head 23 respectively by the heat dissipation pipeline 32 and connected with the other ends of the first cooling head 22 and the second cooling head 23 through the return pipeline 33 .

The liquid-cooled high-power LED projection lamp of the present invention uses cooling liquid to circulate in the cooling system 3 and the cooling head device 2, and conducts the heat emitted by the LED light source 1 to the cooling head device 2, and cools the heat through the cooling liquid. The heat of the head unit 2 is conducted to the cooling system 3 which dissipates the heat to the environment. That is, when the LED light source 1 is used, the cooling system 3 starts to operate, so that the coolant stored therein circulates between the cooling system 3 and the cooling head device 2, and the heat energy generated by the LED light source 1 can be passed through the first heat dissipation surface 12 and the second heat dissipation surface 13 to conduct to the first cooling head 22 and the second cooling head 23 respectively, and then absorb the heat energy conducted by the first cooling head 22 and the second cooling head 23 by the cooling liquid and guide it to the cooling system 3, and The cooling system 3 dissipates heat energy outside the structure of the present invention to achieve the purpose of heat dissipation.

In the present invention, the first cooling surface 12 of the LED light source 1 is also a light-emitting surface. Therefore, in order to achieve effective light emission, the first cooling head 22 is a light-transmitting structure, such as glass, so that the light emitted by the LED light source 1 Diverge through the first cooling head 22 to reduce the shadowing of the LED light source 1 .

In this embodiment, the LED light source 1 further includes a fluorescent layer 14 between the LED unit 11 and the first heat dissipation surface 12, which can increase the effect of the light emitted by the LED light source 1, such as using a yellow fluorescent layer, Then it can mix with the blue LED to emit white light, or use a colored fluorescent layer, supplemented by controlling the light emission of the LED light source 1 to achieve the light mixing effect, making the present invention more varied and more practical.

In order to effectively achieve the purpose of heat efficiency, the cooling system 3 of the present invention can further be a water-cooled cooling system, and the cooling device 31 also includes a heat dissipation unit 311, a water storage unit 312 and a pump unit 313, and the heat dissipation unit 311 includes A radiator 3111 and a fan 3112, one end of the water storage unit 312 is connected to the cooling unit 311, and the other end is connected to the pump unit 313, the cooling unit 311 is different from the one end of the water storage unit 312 and the backflow The pipeline 33 is connected, and one end of the pump unit 313 different from the water storage unit 312 is connected to the heat dissipation pipeline 32. The cooling system 3 uses the water storage unit 312 to store coolant, and when the cooling system 3 is in operation, The cooling liquid in the water storage unit 312 starts to circulate between the cooling system 3 and the cooling head device 2 by the pump unit 313. The channel 32 splits and flows into the first cooling head 22 and the second cooling head 23 respectively, and conducts the heat energy conducted by the first cooling head 22 and the second cooling head 23 into the cooling liquid, and then flows into the coolant through the return line 33 The heat dissipation unit 311 diffuses the heat energy of the coolant to the entire heat dissipation radiator 3111 through the heat dissipation radiator 3111 of the radiator unit 311, and then diffuses the heat energy of the radiator 3111 to the environment through the cooperation of the fan 3112, through the above-mentioned circulation. The heat energy of the LED light source 1 is continuously taken away from the LED light source and dissipated into the environment, so that the heat energy does not accumulate in the LED light source 1 all the time, causing the LED light source 1 to be overheated and damaged.

Furthermore, in the present invention, a soft light unit 15 can be provided on the end surface of the first cooling head 22 opposite to the LED light source 1. The light soft unit 15 is mainly used to homogenize the lines caused by the water flow. A light concentrating unit 16 is provided on the end surface of a cooling head 22, which can be used to gather the divergent light to increase the power of the light, so that the light can be projected to a farther area.

Please refer to Fig. 3 again, it is the second preferred embodiment of the present invention, wherein, the structure of this embodiment is substantially the same as that of the first embodiment, and the difference is that: the first cooling head 22 houses an appropriate amount of fluorescent light Powder 24, and between the first cooling head 22 and the return line 32 and between the first cooling head 22 and the heat dissipation line 32 respectively include a filter 25, the filter 25 is used to filter the phosphor powder 24, so that the phosphor powder 24 It will not be taken away by the cooling liquid flow and ensure the amount of phosphor powder 24 in the first cooling head 22; Scattered and flooded in the first cooling head 22, because the first cooling head 22 is made of a light-transmitting structure, when the light emitted by the LED light source 1 enters the first cooling head 22, part of the light is changed by the phosphor 24 The color of the light, in addition, the phosphor powder 24 used can be several kinds of phosphor powders of different colors, so that the light of the LED light source 1 changes the color of the light through different phosphor powders 24 and mixes the light of multiple colors to achieve mixing. The effect of light makes the present invention produce more different kinds of light, which increases the practicability of the present invention. In addition, since the fluorescent powder 24 exists in the cooling liquid, the fluorescent powder 24 can be placed in the cooling liquid by the flow of the cooling liquid. The heat energy raised by the light irradiation is brought to the cooling system 3 to achieve the purpose of heat dissipation, and the outer side of the first cooling head 22 can be provided with heat dissipation fins 26 to enhance the effect of heat dissipation.

Please refer to Fig. 4 again, it is the third embodiment of the present invention, wherein, this embodiment includes:

An LED light source 1a, which includes several LED units 11a;

A cooling head device 2a which includes an accommodating space 21, the accommodating space 21 is placed for the LED light source 1a; and

A cooling system 3, which includes a cooling device 31, a heat dissipation pipeline 32 and a return pipeline 33, the cooling device 31 is connected with an end of the cooling head device 2a through the heat dissipation pipeline 32, and the return pipeline The passages 33 are respectively connected to the other ends of the cooling head devices 2a.

In this embodiment, the cooling system 3 is a water-cooled cooling system, the cooling head device 2a is a light-transmitting structure, the cooling head device 2a is provided with a fluorescent layer 14a on the end face of the LED light source 1a, and the cooling device 3 is also An appropriate amount of non-conductive cooling liquid is stored, and a transparent single crystal aluminum oxide layer 17 is also included between the fluorescent layer 14a and the water cooling head device 2a. When the LED light source 1a emits light, it emits light through the cooling liquid and the cooling head device 2a. After the light is softened by the transparent single crystal aluminum oxide layer 17, the light from the LED light source 1 is softened, and the light is changed in color or mixed by the fluorescent layer 14a as in the first embodiment, and finally diffused to the outside; in terms of heat dissipation, In this embodiment, the LED light source 1a is placed in the accommodating space 21 of the cooling head device 2a, and is immersed in the cooling liquid when the cooling system 3 is in operation. Therefore, the cooling liquid used in this embodiment is a non-conductive cooling liquid. Even if the LED light source 1a is immersed in the cooling liquid, no short circuit will occur, and the LED light source 1a can operate normally, and can effectively help the LED light source 1a to dissipate heat. As for the cooling system 3, it is roughly the same as the first embodiment , so no more details.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to within the scope of the technical solutions of the present invention.

In summary, the present invention fully meets the needs of industrial development in terms of structural design, practicability and cost-effectiveness, and the disclosed structure also has an unprecedented innovative structure, novelty, creativity and practicability, and meets the requirements of relevant According to the requirements of the invention patent requirements, the application is filed according to law.

Claims (10)

1. A liquid-cooled high-power LED projection lamp, characterized in that it comprises: An LED light source, which includes several LED units, one end surface of the LED light source is a first heat dissipation surface and the other end surface is a second heat dissipation surface; A cooling head device, which includes a first cooling head and a second cooling head, the first cooling head is arranged on the first heat dissipation surface, and the second cooling head is arranged on the second heat dissipation surface; and A cooling system, which includes a cooling device, a heat dissipation pipeline and a return pipeline, the cooling device is respectively connected to one end of the first cooling head and the second cooling head through the heat dissipation pipeline, and the return pipe The channels are respectively connected to the other ends of the first cooling head and the second cooling head. 2. The liquid-cooled high-power LED projection lamp according to claim 1, wherein the first cooling head is a light-transmitting structure. 3. The liquid-cooled high-power LED projection lamp according to claim 2, wherein the LED light source further comprises a fluorescent layer between the LED unit and the first heat dissipation surface. 4. The liquid-cooled high-power LED projection lamp according to claim 2, wherein phosphor powder is placed in the first cooling head, and the gap between the first cooling head and the return pipeline and the first cooling head The cooling pipeline and the cooling pipeline respectively include a filter. 5. The liquid-cooled high-power LED projection lamp according to claim 1-3 or 4, wherein the cooling system is a water-cooled cooling system, and the cooling device also includes a heat dissipation unit, a water storage unit and A pump unit, the heat dissipation unit includes a radiator and a fan, one end of the water storage unit is connected to the heat dissipation unit, and the other end is connected to the pump unit, the heat dissipation unit is different from one end of the water storage unit and The return pipeline is connected, and one end of the pump unit different from the water storage unit is connected with the heat dissipation pipeline. 6 . The liquid-cooled high-power LED projection lamp according to claim 5 , wherein a soft light unit is provided on the end surface of the first cooling head opposite to the LED light source. 6 . 7 . The liquid-cooled high-power LED projection lamp according to claim 6 , wherein a light-concentrating unit is arranged on the end face of the first cooling head opposite to the light-diffusing unit. 7 . 8. A liquid-cooled high-power LED projection lamp, characterized in that it comprises: An LED light source, which includes several LED units; A cooling head device, which includes an accommodating space for the LED light source to be disposed; and A cooling system, which includes a cooling device, a heat dissipation pipeline and a return pipeline, the cooling device is connected to one end of the cooling head device through the heat dissipation pipeline, and is connected to the cooling head device through the return pipeline The other end is connected. 9. The liquid-cooled high-power LED projection lamp according to claim 8, wherein the cooling system is a water-cooled cooling system, the cooling head device is a light-transmitting structure, and the cooling head device is opposite to the LED light source. A fluorescent layer is arranged on the end face. 10. The liquid-cooled high-power LED projection lamp according to claim 9, wherein the cooling device also stores an appropriate amount of non-conductive cooling liquid, and a transparent single crystal alumina layer.