CN211061838U

CN211061838U - Totally-enclosed optical machine with vertical heat dissipation and projector thereof

Info

Publication number: CN211061838U
Application number: CN201921901618.XU
Authority: CN
Inventors: 胡先君
Original assignee: Htp Optoelectronic Technology Co ltd
Current assignee: Htp Optoelectronic Technology Co ltd
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-07-21
Anticipated expiration: 2029-11-06

Abstract

The utility model discloses a totally closed ray apparatus with rectilinear heat dissipation and projector thereof belongs to monolithic L CD projection display technique, the heat dissipation and the dustproof technical field of ray apparatus, its characterized in that is the vertical air inlet heat dissipation from the long limit of L CD LCD screen for the heat dissipation is more abundant effective, temperature control is more even, the ray apparatus adopts totally enclosed, dustproof design, and then the problem of the unable effective discharge of heat that leads to of totally enclosed is solved to the initiative radiating mode who proposes to use semiconductor refrigeration piece technique, and manufacturing cost also very reduces moreover.

Description

Totally-enclosed optical machine with vertical heat dissipation and projector thereof

Technical Field

Single sheet L CD projection display technology, and optical machine heat dissipation and dust prevention technology.

Background

In the current single L CD projector industry, heat dissipation of a L CD liquid crystal screen with 4-6 inches and auxiliary optical components (including a light-in side Fresnel lens, brightness enhancement glass, a light-in polarizing film, a light-out polarizing film and a light-out side Fresnel lens) is mainly realized by adding a vortex or axial flow fan at the short side of the liquid crystal screen and forcibly forcing air at two sides of the liquid crystal screen to flow in a blowing or sucking mode, so that heat on the liquid crystal screen and the optical components is taken away to achieve the effect of reducing the temperature of the liquid crystal screen and the main optical components.

The short side air inlet easily causes the temperature of the liquid crystal screen and each optical film at the far end away from the fan to be not well controlled, and the temperature is higher. The light person can cause the color cast phenomenon caused by the uneven temperature of the image display; the severe case may cause the high temperature points of the liquid crystal screen and the optical films to begin to yellow or even burn out before the service life of the liquid crystal screen and the optical films.

The sealed optical machine (L ED lighting, display unit and integral optical component of projection lens) of single-chip L CD projection display scheme in the existing industry mainly has two types, one type is called semi-sealed optical machine and is mainly characterized in that the sealed optical machine is provided with an air inlet and an air outlet, but the air inlet and the air outlet are both pasted by a high-density dustproof net to play a certain dustproof effect, and the other type is fully sealed optical machine and is mainly characterized in that the sealed optical machine is fully sealed to play the best dustproof effect, and only a heat conduction aluminum sheet is arranged on one side of the optical machine and penetrates through the inside and the outside of the sealed optical machine without the air inlet and the air outlet to play a role in transferring heat.

The semi-closed optical machine is communicated with the outside, and external cold air can be continuously introduced into the optical machine to realize effective heat dissipation of optical components such as L CD liquid crystal screens, polaroids and the like in a high-heat environment, so the brightness of the optical machine can reach a higher level.

The fully-closed optical machine has the outstanding advantages that the display unit is fully closed, and the possibility of entering dust and moisture is completely blocked. The product yield can be effectively improved and the production cost can be reduced by matching with a clean production environment. For the working state of the optical machine, the display effect is more stable, the service life of each optical component is longer, and the influence of the environmental temperature is less. The disadvantage is that a large amount of heat inside the optical engine cannot be effectively discharged out of the optical engine in time, which causes the temperature of each internal optical component to be higher. Such fully enclosed light engines can only be used for low brightness projectors.

Therefore, the prior art has the following disadvantages: the short side enters air to cause uneven temperature on the liquid crystal screen and each optical component to cause color cast, and even the device is damaged due to higher temperature; in order to prevent the far-end temperature from being overhigh, a fan with high wind pressure and large wind volume is often adopted to carry out forced heat dissipation, so that the cost is increased and the noise of the whole machine is increased; the dustproof effect can not be achieved, or the dustproof brightness can not meet the requirement.

Disclosure of Invention

One of the purposes of the utility model is to provide a totally-enclosed optical machine with vertical heat dissipation, which aims to solve the problem of uneven heat dissipation caused by air intake of the short side of the projector in the prior art; the optical-mechanical system is completely closed and dustproof, and a vertical heat dissipation mode using a semiconductor refrigeration sheet technology is provided to solve the problem that heat caused by complete closing cannot be effectively discharged.

The utility model discloses a second purpose lies in the projector, and this projector aims at solving among the prior art to meeting, family, education use the little and tone quality poor problem of loudspeaker sound.

In order to achieve the above purpose, the technical scheme of the utility model is that:

a totally closed ray apparatus with rectilinear heat dissipation, totally closed ray apparatus with rectilinear heat dissipation includes: the fully-closed optical machine cover body of the lighting system and the imaging system, the vertical air inlet and outlet duct and the semiconductor refrigeration module.

The totally-enclosed optical machine cover body encloses a closed space, an optical assembly is arranged in the closed space, and an internal air vertical circulating heat dissipation path is formed in the space.

The optical assembly comprises an illumination system, an imaging system and a fully-closed optical machine, wherein the illumination system comprises an L ED lamp panel, a light condensing funnel and brightening glass, the imaging system comprises a L CD liquid crystal display screen, a Fresnel lens, a reflector and a projection lens, and air in the closed space flows clockwise in a circulating mode from the long edge of the lower end of the L CD liquid crystal display screen in the fully-closed optical machine.

The semiconductor refrigeration module is embedded at the top of the fully-closed optical machine, and the cold surface of the semiconductor refrigeration module faces inwards and the hot surface faces outwards.

The projection lens and the reflector are arranged on the right side in the totally-enclosed optical machine cover body and play roles in changing a light path and amplifying imaging.

As an optimal technical scheme of the utility model, totally closed ray apparatus cover internal be provided with be used for the auxiliary gas to follow inside air vertical circulation heat dissipation path circulation radiating fan.

As an optimal technical scheme of the utility model, the cold face of semiconductor refrigeration module is closely laminated with the many flutes of taking groove form heat absorption aluminium pig of arranging ray apparatus inside in, and the hot face is connected with the radiating fin group of indulging putting with the mode of heat pipe heat conduction, absorbs and transmits thermal effect.

As a preferred technical scheme of the utility model, the cold surface of the semiconductor refrigeration module is provided with a heat absorption air duct; the multi-groove heat absorption air channel is arranged at the lower part of the semiconductor refrigeration module.

The multi-groove heat-absorbing aluminum block is provided with an aluminum sealing cover plate at the top end of the groove, so that the multi-groove forms a plurality of air channels with two open ends.

As an optimal technical scheme of the utility model, outer radiator includes the heat pipe of heat dissipation aluminium pig, embedding aluminium pig and alternates in indulging of heat pipe cold junction and put heat dissipation aluminium system fin group and vortex fan.

As a preferred technical scheme of the utility model, the gas in the enclosure space can be cooled down the preferential flow of back and pass through L CD liquid crystal display.

Vortex fan drive air is clockwise circulation flow in totally closed ray apparatus vertical direction, and first vortex fan (5) are placed side by side with second vortex fan (6) and are located the lower part of totally closed ray apparatus and be close to L CD liquid crystal display lower extreme long limit department, wind blows to the top from L CD liquid crystal display's below to divide into left half district and the independent heat dissipation of right half district with L CD liquid crystal display.

As a preferred technical scheme of the utility model, gas circulation heat dissipation path contains main route and many branch paths, all branch path is main route communicates with each other.

The refrigeration module is arranged on the main path, the gas in the closed space can circulate through the main path or one of the branch paths to flow through the long edge of the lower end of the L CD liquid crystal display screen, and each branch path is provided with at least one component needing heat dissipation.

As a preferred technical scheme of the utility model, the optical assembly includes lighting system, including L ED lamp plate, spotlight light funnel, blast glass, imaging system includes L CD liquid crystal display, fresnel lens, speculum and projection lens, the air in the enclosure space is from L CD liquid crystal display's lower extreme long edge department vertical direction clockwise circulation flow in totally closed ray apparatus.

L CD liquid crystal display hug closely in spotlight light funnel main aspects, L ED lamp plate hug closely in spotlight light funnel tip, four plane of reflection of spotlight light funnel adopt the mirror surface aluminium material that heat conductivility and reflectivity are high.

White light emitted by the L ED lamp panel in a working state irradiates the L CD liquid crystal display screen, a part of light penetrates through the L CD liquid crystal display screen and is imaged by an optical element, and most of the rest light flux is blocked by liquid crystal and generates heat.

As a preferred technical solution of the present invention, the optical component includes a reflecting mirror.

One short edge of the reflector is attached to one side of the Fresnel lens, the other short edge of the reflector is attached to one side of the lens, and one long edge of the reflector is positioned above the first vortex fan (5) and the second vortex fan (6).

As a preferred technical solution of the present invention, the totally enclosed optical machine is a main body and a core of the projector; the whole machine is provided with a dust screen, a built-in power supply and a built-in sound box.

The dust screen can prevent impurities such as dust and flock in the use environment from entering a radiating aluminum sheet in the machine plugging machine to influence the radiating effect.

The built-in power supply can be arranged behind the reflector of the totally-enclosed optical machine.

The built-in sound box is provided with a left large-size full-frequency playback unit and a right large-size full-frequency playback unit, and can realize high-quality accompanying sound playing by matching with a large-size low-frequency radiator.

The beneficial effects of the utility model are that, the utility model relates to a totally closed ray apparatus with rectilinear heat dissipation and projector thereof is through adopting the long limit from L CD LCD screen also be the heat dissipation of perpendicular air inlet exactly for the heat dissipation is more abundant effective, temperature control is more even, the ray apparatus adopts totally enclosed, dustproof design, reach the urgent demand of highlight demonstration when realizing totally enclosed ray apparatus system, it is more even to LCD screen and optical component's heat dissipation, image display colour cast is little, reducible an external fan, thereby reduce the whole noise of machine, be fit for batch production.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the following patent of the present invention is further described with reference to the accompanying drawings and implementation.

Fig. 1 is a front view of the present invention, the components mainly include a semiconductor refrigeration module (TEM), a light-gathering funnel cover, L ED lamp heat-dissipating axial fan, a L ED lamp panel, a L ED lamp heat-dissipating device, a semiconductor refrigeration module (TEM) heat-dissipating axial fan, a totally enclosed optical engine cover, a projection lens, and an optical engine internal reflector.

Fig. 2 is a rear view of the present invention.

Fig. 3 is the utility model discloses an inner structure and when specifically using with semiconductor refrigeration module (TEM), spotlight funnel cover, L ED lamp heat dissipation axial fan, L ED lamp plate, L ED lamp radiator, semiconductor refrigeration module (TEM) heat dissipation axial fan, the totally closed ray apparatus cover body, projection lens and ray apparatus internal reflection mirror's position relation.

Fig. 4 is a layout diagram of a projector according to the present invention. The totally-enclosed optical machine is a main body and a core of the projector, and the whole machine is provided with a dust screen, so that dust and flock in a use environment can be prevented from entering the machine to block heat dissipation fins in the machine, and the heat dissipation effect is prevented from being influenced; a built-in power supply can be placed in the space behind the reflector of the totally-enclosed optical machine; the sound box body can be placed in the space at the lower part of the totally-enclosed optical machine, so that an ideal sound reproduction effect is achieved.

Detailed Description

With reference to fig. 1, the front view of a fully enclosed optical engine with vertical heat dissipation mainly includes a semiconductor refrigeration module (TEM) ①, a light-gathering funnel cover ②, a L ED lamp heat dissipation axial flow fan ③, a L ED lamp panel ⑤, a L ED lamp heat sink ④⑥, a semiconductor refrigeration module (TEM) heat dissipation axial flow fan ⑦, a fully enclosed optical engine cover ⑧, a projection lens L0, and an optical engine internal reflector L1.

With reference to fig. 2, a rear view of a totally enclosed optical machine with vertical heat dissipation is shown.

The heat generated by the cooling air fan 72 is transferred to the cooling air fan 72 through the cooling air duct 72, and then is further transferred to the cooling air fan 72 through the cooling air duct 72, and finally is cooled and cooled by the cooling air fan 72, and finally is further transferred to the cooling air fan 72 through the cooling air duct 72, and the cooling air fan 72.

The projector with vertical heat dissipating fully closed light machine has the main body and core of the projector ⑤, the fully closed light machine ① has dust screen ② to prevent dust and bits from entering the heat dissipating fins inside the projector and affecting the heat dissipating effect, and one built-in power source ③ may be set in the back of the reflector of the fully closed light machine and one sound box ④ may be set in the lower part of the fully closed light machine to reach ideal sound playing effect.

The above is the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, other related drawings can be obtained according to the preferred embodiment of the present invention without departing from the present invention, and the protection scope of the present invention should also be considered.

Claims

1. A totally-enclosed optical machine with vertical heat dissipation is characterized by comprising a totally-enclosed optical machine cover body containing a lighting system and an imaging system, a vertical air inlet and outlet duct and a semiconductor refrigeration module;

the totally-enclosed optical machine cover body encloses a closed space, an optical assembly is arranged in the closed space, and an internal air vertical circulating heat dissipation path is formed in the space;

the optical assembly comprises an illumination system, an imaging system and a closed space, wherein the illumination system comprises an L ED lamp panel, a light condensing funnel, a Fresnel lens and brightening glass, the imaging system comprises a L CD liquid crystal display screen, a Fresnel lens, a reflector and a projection lens, and air in the closed space flows clockwise circularly in a vertical direction from the long edge of the lower end of the L CD liquid crystal display screen in the fully-closed optical machine;

the semiconductor refrigeration module comprises a semiconductor refrigeration plate (TEC), and a hot end radiator with a radiating fin and a heat absorption air channel with a plurality of grooves are led out by a heat pipe.

2. The fully enclosed light engine with vertical heat dissipation of claim 1, wherein: and a fan used for assisting air to circularly radiate along the internal air vertical circulating radiating path is arranged in the totally-closed optical machine cover body.

3. The totally-enclosed optical-mechanical device with vertical heat dissipation of claim 1 or 2, wherein the internal air vertical circulation heat dissipation path comprises a main path and a plurality of branch paths, all the branch paths are communicated with the main path, the refrigeration module is arranged on the main path, the main path or one of the branch paths of the gas in the enclosed space can circulate through the long edge of the lower end of the L CD liquid crystal display screen, and each branch path is provided with at least one component needing heat dissipation.

4. The fully enclosed light engine with vertical heat dissipation of claim 3, wherein: the cold surface of the semiconductor refrigeration module is tightly attached by a large-area multi-groove heat absorption aluminum block arranged in the light machine, and the hot surface is connected with the longitudinally arranged radiating fin group in a heat pipe heat conduction mode.

5. The fully enclosed light engine with vertical heat dissipation of claim 4, wherein: the heat absorption block is provided with a plurality of grooves, and the top ends of the grooves are provided with aluminum closed cover plates, so that the grooves form a plurality of air channels with two open ends; the multi-groove heat absorption air channel is arranged at the lower part of the semiconductor refrigeration module.

6. The fully enclosed light engine with vertical heat dissipation of claim 5, wherein: the cold surface of the refrigeration module is attached with a heat absorption air duct, the hot surface of the refrigeration module is attached with an external radiator, and the heat absorption air duct is installed in the fully-closed optical machine.

7. The fully enclosed light engine with vertical heat dissipation of claim 6, wherein: the outer radiator comprises a radiating aluminum block, a heat pipe embedded in the aluminum block, a longitudinally-arranged radiating aluminum fin group inserted at the cold end of the heat pipe and a vortex fan.

8. The fully-closed optical machine with the vertical heat dissipation function according to claim 7, wherein the vortex fan circulates clockwise in the fully-closed optical machine in the vertical direction, the first vortex fan (5) and the second vortex fan (6) are arranged side by side and are positioned at the lower part of the fully-closed optical machine and close to the long edge of the lower end of the L CD liquid crystal display screen, wind blows upwards from the lower part of the L CD liquid crystal display screen, and the L CD liquid crystal display screen is divided into a left half area and a right half area to dissipate heat independently.

9. The fully-enclosed optical-mechanical system with vertical heat dissipation of claim 1 or 8, wherein the L CD LCD is tightly attached to the big end of the light-gathering funnel, the L ED lamp panel is tightly attached to the small end of the light-gathering funnel, and the four reflecting surfaces of the light-gathering funnel are made of mirror aluminum materials with high heat conductivity and high reflectivity.

10. The fully-closed optical machine with the vertical heat dissipation function according to claim 9, wherein white light emitted by the L ED lamp panel in a working state irradiates the L CD liquid crystal display screen, a part of light passes through the L CD liquid crystal display screen and is imaged by an optical element, most of the rest light flux is blocked by liquid crystal and generates heat, and cold air generated by cooling the L CD liquid crystal display screen by the cooling module forms one part of the internal air vertical circulation heat dissipation path through a narrow channel between the Fresnel lens and the L CD liquid crystal display screen, so that heat dissipation of the L CD liquid crystal display screen and other optical components is achieved.

11. The fully enclosed light engine with vertical heat dissipation of claim 1, wherein: the projection lens and the reflector are arranged on the right side in the totally-enclosed optical machine cover body and play roles in changing a light path and amplifying imaging.

12. The fully enclosed light engine with vertical heat dissipation of claim 11, wherein: one end of the projection lens is tightly attached to the side of the refrigeration module, and the other end of the projection lens is tightly attached to the short side of the reflector.

13. The fully enclosed light engine with vertical heat dissipation of claim 12, wherein: one short edge of the reflector is attached to one side of the Fresnel lens, the other short edge of the reflector is attached to one side of the lens, and one long edge of the reflector is positioned above the first vortex fan (5) and the second vortex fan (6).

14. A projector, characterized in that: a totally enclosed light engine incorporating the vertical heat sink of any one of claims 1-13.

15. A projector as claimed in claim 14, wherein: the projector also comprises a dustproof net, a built-in power supply and a built-in sound box, wherein the dustproof net can prevent impurities such as dust, flock and the like in a use environment from entering a heat dissipation aluminum sheet in the projector to block the projector, so that the heat dissipation effect is influenced; the built-in power supply can be arranged behind the reflector of the totally-enclosed optical machine; the built-in sound box is provided with a left large-size full-frequency playback unit and a right large-size full-frequency playback unit, and can realize high-quality accompanying sound playing by matching with a large-size low-frequency radiator.

16. A projector as claimed in claim 15, wherein: the sound box body is placed in the space at the rear part of the vertical radiating totally-enclosed optical machine, so that ideal high-quality sound effect required by a user can be achieved.