CN101620368B

CN101620368B - Projector with cooling system

Info

Publication number: CN101620368B
Application number: CN2008100683277A
Authority: CN
Inventors: 廉志晟; 邓根平; 陈俊吉
Original assignee: Hong Jun Precision Industry Co ltd; Fuzhun Precision Industry Shenzhen Co Ltd
Current assignee: Luohe Power Supply Company State Grid Henan Electric Power Co; State Grid Corp of China SGCC; Shenzhen Qichuangmei Tech Co Ltd
Priority date: 2008-07-04
Filing date: 2008-07-04
Publication date: 2011-12-28
Anticipated expiration: 2028-07-04
Also published as: CN101620368A

Abstract

The invention discloses a projector with a cooling system, which comprises a shell, a plurality of light sources in the shell, and the cooling system connected with the light sources. The cooling system comprises a first heat sink, a second heat sink, a third heat sink, a fan and a heat pipe, wherein the first heat sink, the second heat sink, and the third heat sink are mounted on the light sources; the first heat sink comprises a vertically-arranged substrate and a fin group formed on one side of the substrate; the second heat sink comprises a substrate vertically arranged on the fan and perpendicular to the top surface of a fan, and a fin group arranged on one side of the substrate; the third heat sink comprises a substrate and a fin group arranged on one side of the substrate; and one end of the heat pipe is connected with the substrate and the fin group of the first heat sink, while the other end is connected with the fin group of the second heat sink. In the projector, different heat sinks are arranged on the plurality of light sources for heat dissipation, which can rationally allocate the heat dissipation of the heat sinks, and fully utilize the heat dispersion of the heat sinks so as to achieve excellent heat dissipation effect.

Description

Projector with cooling system

Technical field

The present invention relates to a kind of projector, particularly a kind of projector with cooling system that a plurality of light sources in the projector are dispelled the heat.

Background technology

Pursue in high-level efficiency, the allegro modern handle official bussiness current, projector can see its figure everywhere as novel office equipment user.Projector not only can be applied to temporary meeting, technology lecture, network center, commander Surveillance center, can also be connected with computing machine, workstation etc., or receive video recorder, televisor, video disc player and real object exhibition booth etc., we can say that it is a kind of application large-screen image equipment very widely.Because the demand of application places and consumer's sense organ is enjoyed, the aspects such as volume, weight and brightness of projector there is more and more higher requirement.

If want projector that higher brightness is arranged, just must adopt to have more powerful light source, and powerful light source can produce a large amount of heats when working, this just must bring the problem of how light source being dispelled the heat effectively.One heat abstractor can be set usually to dispel the heat to its light source; yet; in the inner limited space of projector; this traditional heat abstractor still can not effectively dispel the heat to its light source; thereby influence the stream time of projector; the task performance of projector is reduced, shortened the serviceable life of projector.

Summary of the invention

In view of this, be necessary to provide a kind of projector, have a cooling system that heat dispersion is good in it.

A kind of projector with cooling system, comprise a housing, a cooling system that places the some light sources in the housing and be connected with these light sources, this cooling system comprises and is installed on first on the described light source, second, the 3rd heat abstractor, one fan and a heat pipe, this first heat abstractor comprises a substrate of vertically placing and is formed at the fins group of substrate one side, this second heat abstractor comprises that one is vertically placed on the fan and perpendicular to the substrate of fan end face and be arranged on a fins group of this substrate one side, the 3rd heat abstractor comprises a substrate and is arranged on a fins group of this substrate one side, one end of this heat pipe connects the substrate and the fins group of first heat abstractor, and the other end connects the fins group of second heat abstractor.

A plurality of light sources are provided with different heat abstractors it are dispelled the heat in the above-mentioned projector, but the radiating efficiency of reasonable distribution heat abstractor makes full use of the heat dispersion of each heat abstractor, thereby reach better heat radiating effect.

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

Description of drawings

Fig. 1 is the three-dimensional combination figure of a preferred embodiment of projector of the present invention.

Fig. 2 is the three-dimensional combination figure after the projector among Fig. 1 removes the loam cake of shell.

Fig. 3 is the three-dimensional combination figure of the cooling system in the projector among Fig. 2.

Fig. 4 is another visual angle figure of Fig. 3.

Fig. 5 is the three-dimensional combination figure of first heat abstractor in the cooling system of Fig. 3.

Fig. 6 is the three-dimensional combination figure of second heat abstractor in the cooling system of Fig. 4.

Embodiment

Please see figures.1.and.2 simultaneously, be a preferred embodiment of projector of the present invention.This projector comprises a housing 10, has removable loam cake 12, one cooling systems 20 on this housing 10 and is arranged in this housing 10.One camera lens 14 convexedly stretches in outside the right side wall of housing 10.Form a square opening (not indicating) on the position, roughly rear end of loam cake 12; Corresponding with the square opening on the loam cake 12, the bottom of housing 10 also is provided with a through hole (figure does not show).Thereby but this square opening and through hole air feed stream by and this cooling system 20 of flowing through quicken distributing to the heat in the projector.

Cooling system 20 comprises one first heat abstractor 30, one second heat abstractor 40 and one the 3rd heat abstractor 50.The part of first heat abstractor 30 is near the right side wall of housing 10.Another part of

first heat abstractor

30 and 40 rear ends that place housing 10 of second heat abstractor.The 3rd heat abstractor 50 is near the left side wall of housing 10.One first, second, third light source 301,401,501 links to each other with first, second,

third heat abstractor

30,40,50 respectively.First light source 301 and the 3rd light source 501 are oppositely arranged, and place the both sides of secondary light source 401.First, second, third light source 301,401,501 among this embodiment all adopts light emitting diode (LED), and the power maximum of first light source 301, and the power of secondary light source 401 takes second place, the power minimum of the 3rd light source 501.In other words, when working in this projector, the heat that first light source 301 produces is maximum, and the heat that secondary light source 401 produces takes second place, and the heat that the 3rd light source 501 produces is minimum.

Please also refer to Fig. 3 and Fig. 4, a fan 60 places the below of second heat abstractor 40.The through hole of this fan 60 on the housing 10 can provide cooling draught to flow in the projector it is dispelled the heat.

Please refer to Fig. 5, first heat abstractor 30 comprises one first heating radiator 32, one first fins group 36 and connects this first heating radiator 32 and a heat pipe 35 of first fins group 36.This first heating radiator 32 comprises a substrate 322 and some radiating fins 324.This substrate 322 is roughly rectangular, and erects and place, and 324 of radiating fins place on the side of this substrate 322.Each radiating fin 324 reaches two flangings (indicating) that extended to form by these body two lateral bucklings by a rectangular body (indicating) and forms.The flanging of back one radiating fin 324 is resisted against on the body of last radiating fin 324, forms a vertical gas channel (not indicating) between the per two adjacent bodies.Form a groove (not indicating, high-visible in Fig. 4) on radiating fin 324 and the substrate 322 respectively, the common passage 3221 that forms a thin-and-long of these grooves, a part that is used for ccontaining heat pipe 35 is in it.

The structural similarity of the radiating fin 324 in first fins group 36 and first heating radiator 32.Form a vertical gas channel 363 in first fins group 36 between every adjacent two radiating fins.Also form a through hole (not indicating) on first fins group 36, a part that is used for ccontaining heat pipe 35 is in it.Heat pipe 35 is L-shaped, the interior condensation segment 354 of through hole that it comprises the evaporator section 352 in the passage 3221 that is contained in first heating radiator 32 and is contained in first fins group 36.Wherein, this evaporator section 352 is a flat, and this condensation segment 354 is cylindric.This evaporator section 352 is arranged to flat, is in order to reduce the volume of first heating radiator 32, thereby this first heating radiator 32 can be contained in the limited heat-dissipating space of projector.

Please refer to Fig. 6, second heat abstractor 40 comprises a substrate 42 and is arranged on one second fins group 44 of substrate 42 rear sides.The end face of these substrate 42 vertical placements and vertical fan 60.This second fins group 44 is L-shaped, also promptly the front end of this second fins group 44 end of substrate 42 (promptly near) than its rear end one end of substrate 42 (promptly away from) height, thereby forming a ladder 442 at the end face of second fins group 44, first fins group 36 that is used for placing first heat abstractor 30 is thereon.Form a vertical gas channel 443 in second fins group 44 between every adjacent two radiating fins.The width of the gas channel 363 that first fins group 36 in the width of this gas channel 443 and first heat abstractor 30 forms is identical.First fins group 36 just places on the ladder 442 of second fins group 44 together with the condensation segment 354 of heat pipe 35, the end face of first fins group 36 flushes with the end face of second fins group 44, thereby first fins group 36 forms a cuboid with second fins group 44.

Refer again to Fig. 3 and Fig. 4, the 3rd heat abstractor 50 separates setting with first, second heat abstractor 30,40.The 3rd heat abstractor 50 comprises a rectangular substrate 52 and the 3rd fins group 54 that is arranged on substrate 52 1 sides.The structural similarity of the radiating fin 324 in the structure of the 3rd fins group 54 and first heating radiator 32.Substrate 322 in the substrate 52 in the 3rd heat abstractor 50 and first heating radiator 32 is provided with and face-to-face perpendicular to the substrate 42 of second heat abstractor 40.The first, the 3rd light source 301,501 is sticked respectively on two relative sides of substrate 52, substrate 322.The 3rd fins group 54 in the

3rd heat abstractor

50 and 324 of radiating fins in first heating radiator 32 are separately positioned on two opposite sides of substrate 52, substrate 322, thereby second,

third fins group

44,54 of the radiating fin 324 of first heating radiator 32 after the assembling, second and

third heat abstractor

40,50 is all than the corresponding sidewall of their

substrates

322,42,52 separately near housings 10.

Be the thermal impedance in the heat radiation approach that reduces first, second, third light source 301,401,501, between the substrate 322 of first light source 301 and first heating radiator 32, between the substrate 42 of secondary light source 401 and second heat abstractor 40, also be respectively arranged with a heat-

collecting block

31,41,51 between the substrate 52 of the 3rd light source 501 and the 3rd heat abstractor 50.These heat-collecting

blocks

31,41,51 are made by the high thermal conductivity material, can play the effect of thermal-arrest and quick conductive.

The situation that the heat that projector among the present invention produces during at the work of first, second, third light source 301,401,501 has nothing in common with each other has adopted first, second,

third heat abstractor

30,40,50 that has nothing in common with each other that it is dispelled the heat.Wherein, the heat that produces during 301 work of first light source is maximum, thereby first heat abstractor 30 not only be provided with first heating radiator 32 it dispelled the heat, also use heat pipe 35 simultaneously and combine with first heating radiator 32, heat can be dispelled the heat by first fins group 36 that conducts to rapidly of heat pipe 35.In addition, according to the distribution of the heat-dissipating space in the projector, also be provided with first, second

higher heat abstractor

30,40 of 60 pairs of radiating requirements of a fan and force cooling.The a plurality of light sources of this employing also adopt different heat abstractors to its setting of dispelling the heat, can reduce the risk that heat brings for the element in the projector, and can make full use of heat-dissipating space limited in the projector, effectively utilize simultaneously the heat dispersion of each heat abstractor, promote integral heat sink efficient.

Be appreciated that ground, first fins group 36 of the present invention is positioned on second heat abstractor 40, and it can be used as the part of second heat abstractor 40, and heat pipe 35 connects first fins group 36 of first heat abstractor 30 (i.e. first heating radiator 32) and second heat abstractor 40.

Claims

1. projector with cooling system, comprise a housing, a cooling system that places the some light sources in the housing and be connected with these light sources, it is characterized in that: this cooling system comprises and is installed on first on the described light source, second, the 3rd heat abstractor, one fan and a heat pipe, this first heat abstractor comprises a substrate of vertically placing and is formed at the fins group of substrate one side, this second heat abstractor comprises that one is vertically placed on the fan and perpendicular to the substrate of fan end face and be arranged on a fins group of this substrate one side, the 3rd heat abstractor comprises a substrate and is arranged on a fins group of this substrate one side, one end of this heat pipe connects the substrate and the fins group of first heat abstractor, the other end connects the fins group of second heat abstractor, described some light sources comprise first, second and third light source, the power maximum of first light source, the power minimum of the 3rd light source, the power of secondary light source is between first, between the power of the 3rd light source, and first light source is sticked on the substrate of first heat abstractor, secondary light source is sticked on the substrate of second heat abstractor, and the 3rd light source is sticked on the substrate of the 3rd heat abstractor.

2. the projector with cooling system as claimed in claim 1, it is characterized in that: the fins group of described second heat abstractor comprises first fins group and second fins group, described second fins group is L-shaped, and first fins group is positioned on second fins group and its end face flushes with the end face of second fins group.

3. the projector with cooling system as claimed in claim 2, it is characterized in that: the substrate of described first heat abstractor and fins group form the passage of ccontaining heat pipe one end, and second fins group of described second heat abstractor forms the through hole of a ccontaining heat pipe other end.

4. the projector with cooling system as claimed in claim 3 is characterized in that: the end that described heat pipe connects first heat abstractor is flat, and an end that connects second heat abstractor is cylindric.

5. the projector with cooling system as claimed in claim 1, it is characterized in that: the substrate of described first heat abstractor is parallel to the substrate of described the 3rd heat abstractor and perpendicular to the substrate of described second heat abstractor, two real estate opposites of described first heat abstractor and the 3rd heat abstractor are provided with.

6. the projector with cooling system as claimed in claim 5, it is characterized in that: described housing is surrounded by some sidewalls, described first, second and third heat abstractor is respectively near corresponding sidewall, and the fins group of described first, second and third heat abstractor is all than the close corresponding sidewall of their substrates separately.

7. the projector with cooling system as claimed in claim 1 is characterized in that: described first light source and the 3rd light source are oppositely arranged, and place the both sides of secondary light source.

8. the projector with cooling system as claimed in claim 1 is characterized in that: described the 3rd heat abstractor and first, second heat abstractor are disconnected from each other.