CN211427026U

CN211427026U - Projector heat dissipation device and projector

Info

Publication number: CN211427026U
Application number: CN202020483286.4U
Authority: CN
Inventors: 周利
Original assignee: Individual
Current assignee: Shenzhen Light Valve Technology Co Ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-09-04
Anticipated expiration: 2030-04-03

Abstract

The utility model discloses a projector heat dissipation device, which comprises an internal circulation air cooling component and a strong exhaust component for LCD light valve heat dissipation, wherein the internal circulation air cooling component comprises an internal circulation fan, a heat exchanger and an internal circulation air duct arranged around the LCD light valve; the internal circulation fan sends heat generated by the LCD light valve to the cold end of the heat exchanger through the internal circulation air duct on one side of the LCD light valve for cooling, and cooled cold air returns to the internal circulation fan through the internal circulation air duct on the other side of the LCD light valve; the strong air exhaust assembly diffuses the heat at the hot end of the heat exchanger into the air. The utility model also provides a projector, include projector heat abstractor. The utility model discloses the radiating efficiency is high, can effectively guarantee that LCD light valve and light source normally work, realizes the totally enclosed of optical system in to optical engine box and the optical engine box to the life of extension LCD light valve, LED light source and projector.

Description

Projector heat dissipation device and projector

Technical Field

The utility model belongs to the technical field of the projector technique and specifically relates to a projector heat abstractor and projector are related to.

Background

In the working process of the projector, part of light cannot penetrate through the LCD light valve to be converted into heat, and the temperature-resistant range of the LCD light valve is very limited, so that the LCD light valve needs to be forcedly cooled, and the forced cooling is usually carried out in an air cooling mode. If the air cooling mode is not isolated from the external atmosphere, a great deal of dust and dirt are collected on the LCD light valve, the collimating lens and the field lens which are arranged in front of and behind the LC light valve along with the increase of the using time, so that the normal use of the projector is influenced, and if the optical system is sealed, the heat generated by the LCD light valve is difficult to discharge into the atmosphere. Therefore, how to dissipate the heat of the LCD light valve by exhausting the heat into the atmosphere in a state isolated from the atmosphere is a technical problem that needs to be solved in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough with regard to overcoming prior art, provides a projector heat abstractor, the utility model discloses the radiating efficiency is high, can effectively guarantee that LCD light valve and LED light source normally work to prolong the life of LCD light valve, LED light source and projector.

In order to achieve the above object, the present invention provides a heat dissipation device for a projector, comprising an internal circulation air cooling assembly and a strong exhaust assembly, wherein the internal circulation air cooling assembly comprises an internal circulation fan, a heat exchanger and an internal circulation air duct surrounding an LCD light valve; the heat exchanger is provided with a cold end and a hot end; the internal circulation fan sends heat generated by the LCD light valve to the cold end of the heat exchanger through the internal circulation air duct on one side of the LCD light valve for heat exchange, and cold air formed after heat exchange and heat release returns to the internal circulation fan through the internal circulation air duct on the other side of the LCD light valve; the strong air exhaust assembly diffuses the heat at the hot end of the heat exchanger into the air.

Further, the LED lamp also comprises a radiator for radiating the heat of the LED light source; the air inlet of the strong air exhaust component is aligned with the heat exchanger, and the air outlet of the strong air exhaust component is aligned with the fins of the radiator.

Further, the strong exhaust component comprises a fan.

Furthermore, the radiator comprises a heat absorption plate, a heat conduction pipe connected with the heat absorption plate, and a plurality of fins connected with the heat conduction pipe, wherein the fins are arranged side by side at intervals.

Further, the heat exchanger comprises a support, and a cold end and a hot end which are arranged on the support, wherein the cold end is connected with the hot end through a partition plate.

Further, the cold end is formed by overlapping a plurality of radiating fins; the hot end is formed by overlapping a plurality of radiating fins.

The utility model also provides a projector, which comprises the projector heat dissipation device, an optical engine box, an LCD light valve, a collimating lens and a field lens, wherein the collimating lens, the LCD light valve and the field lens are arranged in the optical engine box along the light path direction; an internal circulation air duct is formed between the collimating lens and the LCD light valve and between the LCD light valve and the field lens; the internal circulation fan and the heat exchanger are respectively arranged at channel ports at two ends of the internal circulation air duct; the optical engine box is in a sealed state.

Further, the LED lamp also comprises an LED light source (10) arranged on the optical engine box (6), and the heat radiator (5) is attached to the LED light source (10).

The utility model has the advantages that: the utility model discloses inner loop air cooling assembly includes inner loop fan, inner loop wind channel and heat exchanger form the internal circulation passageway, with under the effect of inner loop fan of the heat that the LCD light valve produced, send to heat exchanger through the inner loop wind channel, simultaneously through the subassembly of airing exhaust by force with the heat of heat exchanger hot junction spread fast to the air in, effectively realized the quick heat dissipation of LCD light valve, effectively guarantee the normal work of LCD light valve, prolong the life of LCD light valve. The utility model discloses under strong exhaust subassembly and radiator effect, realize the heat dissipation of LED light source to effectively guarantee the normal work of LED light source, prolong the life of LED light source, simultaneously the utility model discloses the heat dissipation of LCD light valve and LED light source adopts same strong exhaust subassembly, and energy-conservation subtracts the consumption, reduces manufacturing cost, noise abatement. The utility model discloses heat exchanger heat exchange area is big, improves the radiating effect greatly. The utility model discloses heat abstractor's design has realized optical engine box and optical engine box in optical system's the omniseal, is in moreover the utility model discloses under the heat abstractor, when optical engine box was encapsulated situation, can be with the heat that the LCD light valve produced in the air of discharging, prevent in dust and the dirt gets into optical engine box.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of fig. 1 with the top of the optical engine box removed and the internal circulation fan covered.

Fig. 3 is a perspective view of the heat exchanger of the present invention.

The above reference numerals:

1 internal circulation fan, 2 internal circulation inner path, 3 heat exchanger, 4 fan, 5 radiator, 6 optical engine box, 7 field lens, 8LCD light valve, 9 collimating lens, 10LED light source, 30 support, 31 cold end, 32 hot end, 33 baffle, 50 absorber plate, 51 heat pipe, 53 fin, 80 connection winding displacement.

Detailed Description

In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like refer to the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model is usually placed when in use, and are used for convenience of description and simplification of description, but do not refer to or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

As shown in fig. 1-3, the heat dissipation apparatus for a projector provided in this embodiment includes an internal circulation air-cooling assembly and a strong air-discharging assembly for dissipating heat of an LCD light valve 8, where the internal circulation air-cooling assembly includes an internal circulation fan 1, a heat exchanger 3, and an internal circulation air duct 2 disposed around the LCD light valve 8; the heat exchanger 3 is provided with a cold end 31 and a hot end 32; the internal circulation fan 1 sends heat generated by the LCD light valve 8 to the cold end 31 of the heat exchanger 3 through the internal circulation air duct 2 on one side of the LCD light valve 8 for heat exchange, cold air formed after heat exchange and heat release is returned to the internal circulation fan 1 through the internal circulation air duct 2 on the other side of the LCD light valve 8, air-cooled internal circulation is formed in this way, and heat generated by the LCD light valve 8 is quickly taken away, wherein the air circulation flows to the direction indicated by an arrow in figure 2; the forced draft assembly diffuses heat on the hot end 32 of the heat exchanger 3 into the air.

Preferably, the forced air exhaust assembly comprises a fan 4.

This embodiment realizes the effective heat dissipation of LCD light valve 8 through inner loop forced air cooling subassembly and strong exhaust subassembly, and the radiating efficiency is high, effectively guarantees the normal work of LCD light valve 8, prolongs the life of LCD light valve 8.

Further preferably, the heat sink of the projector in the present embodiment further includes a heat sink 5 for dissipating heat of the LED light source 10; the air inlet of the strong exhaust assembly is aligned with the heat exchanger 3 and the air outlet is aligned with the fins 52 included in the heat sink 5.

Preferably, the heat sink 5 comprises an absorber plate 50, a heat pipe 51 connected with the absorber plate 50, and a plurality of fins 52 connected with the heat pipe 51, wherein the plurality of fins 52 are arranged side by side and at intervals, the strong wind exhausting assembly 4 is aligned with the scale 52, although the heat sink 5 can also adopt an existing profile heat sink.

In the embodiment, under the action of the strong air exhaust component 4 and the radiator 5, the heat dissipation of the LED light source 10 is realized, so that the normal operation of the LED light source 10 is effectively ensured, and the service life of the LED light source 10 is prolonged.

In the embodiment, the same strong air exhaust component 4 is adopted for heat dissipation of the LCD light valve 8 and the LED light source 10, so that energy is saved, consumption is reduced, manufacturing cost is reduced, and noise is reduced.

Further preferably, in this embodiment, the heat exchanger 3 includes a support 30, and a cold end 31 and a hot end 32 mounted on the support 30, the cold end 31 is connected to the hot end 32 through a partition 33, and the forced air exhaust assembly 4 diffuses heat of the hot end 32 into air.

In this embodiment, preferably, the cold end 31 is formed by stacking a plurality of fins; the hot end 32 is formed by overlapping a plurality of radiating fins, so that the heat exchange area of the heat exchanger 3 is large, and the radiating effect is greatly improved.

Example two

As shown in fig. 1 to 3, a projector provided in this embodiment includes the projector heat dissipation device according to the first embodiment, and further includes an optical engine box 6, a collimating lens 9, an LCD light valve 8, and a field lens 7, where the collimating lens 9, the LCD light valve 8, and the field lens 7 are disposed in the optical engine box 6 along an optical path direction; an internal circulation air duct 2 is formed between the collimating lens 9 and the LCD light valve 8 and between the LCD light valve 8 and the field lens 7; the internal circulation fan 1 and the heat exchanger 3 are respectively arranged at channel openings at two ends of the internal circulation air duct 2, wherein an air outlet of the internal circulation fan 2 is aligned with the internal circulation air duct 2 between the LCD light valve 8 and the collimating lens 9, and an air inlet of the internal circulation fan 2 is communicated with the internal circulation air duct 2 between the field lens 7 and the LCD light valve 8; the strong air exhaust component 3 is connected with the optical engine box 6, namely the fan 4 is connected with the optical engine box 6. The connection cable 80, in which the LCD light valve 8 is connected, passes through the optical engine box 6. The heat exchanger 3 comprises a bracket 30 connected to said optical engine box 6. The optical engine box 6 is in a sealed state, namely, the internal circulation air cooling assembly only performs internal circulation in the optical engine box 6, so that the internal circulation air cooling effect of the internal circulation air cooling assembly is ensured, and the heat dissipation efficiency of the LCD light valve 8 is greatly improved.

The heat sink of the present embodiment is designed to achieve the complete sealing of the optical engine box 6 and the optical system in the optical engine box 6, and in the heat sink of the present embodiment, when the optical engine box 6 is in a sealed state, the heat generated by the LCD light valve 8 can be discharged into the air, thereby preventing dust and dirt from entering the optical engine box 6.

In this embodiment, the projector further includes an LED light source 10 disposed on the optical engine box 6, and the heat sink 5 is attached to the LED light source 10. Of course, the projector further includes other electronic components, which are not the main points of the present embodiment, and thus are not described in detail.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A projector heat dissipation device is characterized by comprising an internal circulation air cooling assembly and a strong exhaust assembly, wherein the internal circulation air cooling assembly comprises an internal circulation fan (1), a heat exchanger (3) and an internal circulation air duct (2) arranged around an LCD light valve (8); a cold end (31) and a hot end (32) are arranged on the heat exchanger (3); the internal circulation fan (1) sends heat generated by the LCD light valve (8) to the cold end (31) of the heat exchanger (3) through the internal circulation air duct (2) on one side of the LCD light valve (8) for heat exchange, and cold air formed after heat exchange and heat release returns to the internal circulation fan (1) through the internal circulation air duct (2) on the other side of the LCD light valve (8); the strong air exhaust component diffuses the heat of the hot end (32) of the heat exchanger (3) into the air.

2. The projector heat sink according to claim 1, further comprising a heat sink (5) for dissipating heat of the LED light source (10); the air inlet of the strong air exhaust component is aligned with the heat exchanger (3), and the air outlet is aligned with the fins (52) included in the radiator (5).

3. The projector heat sink according to claim 1, wherein the forced air exhaust assembly comprises a fan (4).

4. The heat sink device for projectors according to claim 2, wherein the heat sink (5) comprises a heat absorbing plate (50), a heat pipe (51) connected to the heat absorbing plate (50), and a plurality of fins (52) connected to the heat pipe (51), the plurality of fins (52) being arranged side by side and spaced apart.

5. The projector heat sink according to claim 1, wherein the heat exchanger (3) comprises a support (30), a cold end (31) and a hot end (32) mounted on the support (30), the cold end (31) being connected to the hot end (32) by a partition (33).

6. The projector heat sink according to claim 5, wherein the cold end (31) is composed of a plurality of stacked fins; the hot end (32) is formed by overlapping a plurality of radiating fins.

7. A projector, comprising the heat dissipation device of any one of claims 1 to 6, further comprising an optical engine box (6), an LCD light valve (8), a collimating lens (9), and a field lens (7), wherein the collimating lens (9), the LCD light valve (8), and the field lens (7) are disposed in the optical engine box (6) along an optical path direction; an internal circulation air duct (2) is formed between the collimating lens (9) and the LCD light valve (8) and between the LCD light valve (8) and the field lens (7); the internal circulation fan (1) and the heat exchanger (3) are respectively arranged at channel ports at two ends of the internal circulation air duct (2); the optical engine box (6) is in a sealed state.