CN210666309U - Projector with high heat dissipation capability screen frame - Google Patents
Projector with high heat dissipation capability screen frame Download PDFInfo
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- CN210666309U CN210666309U CN201921824421.0U CN201921824421U CN210666309U CN 210666309 U CN210666309 U CN 210666309U CN 201921824421 U CN201921824421 U CN 201921824421U CN 210666309 U CN210666309 U CN 210666309U
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Abstract
The utility model discloses a projector with high heat-sinking capability screen frame, the projector includes the projector shell and sets up at its inside screen frame shell, and the screen frame shell links to each other with heat exchanger, and the heat exchanger both sides are second grade heat dissipation channel and one-level heat dissipation channel respectively. The top of the primary heat dissipation channel and the air inlet of the internal circulation fan are positioned in the same sealed cavity through the air outlet; an air outlet of the internal circulation fan is connected with one end of the internal circulation channel, the other end of the internal circulation channel is connected with the primary heat dissipation channel, a display device connected with the primary heat dissipation channel and two sides of the display device are arranged in the internal circulation fan, and a Fresnel lens and heat insulation glass are respectively arranged on the two sides of the display device; and forms a closed chamber together with the primary heat dissipation channel; the inner circulation channel passes through the display device body and forms a top channel and a bottom channel along the airflow flowing direction, the channel surface is provided with a lug, and the height of the lug is 1/6-1/3 of the height of the display device.
Description
Technical Field
The utility model belongs to the optical projection device field relates to a projector with high heat-sinking capability screen frame.
Background
The projector is a device capable of projecting images or videos onto a curtain, and can be connected with a computer, a VCD, a DVD, a BD, a game machine, a DV, and the like through different interfaces to play corresponding video signals. The LCD liquid crystal projector is a type of projector, has the advantages of low cost, good color reproduction, high resolution and moderate volume, and is currently the mainstream product in the low-end projector market.
When the system is used, the power consumption of the system is higher and higher from the UHP light source to the LED light source and then to the laser light source, and the generated heat is more and more. The brightness is also increasing, but the heat resistance of the liquid crystal screen is not high. If the heat on the liquid crystal screen can not be effectively dissipated in time, the problem that the liquid crystal screen is damaged due to overhigh temperature can be caused.
Disclosure of Invention
The utility model aims to provide a: the projector with the screen frame with the high heat dissipation capacity has the advantages that heat on the liquid crystal screen is efficiently transferred out in a closed environment, and then the heat is dissipated out through external circulation.
The utility model adopts the technical scheme as follows:
in order to solve the problems of heat dissipation and dust of the traditional liquid crystal projector, on one hand, double-circulation heat dissipation is adopted for preventing dust, and on the other hand, the screen frame with high heat dissipation capacity is adopted for solving the problem of heat dissipation of internal circulation under the condition of high brightness and high power;
a projector with a screen frame with high heat dissipation capacity comprises a projector shell and a screen frame shell arranged in the projector shell, wherein the screen frame shell is connected with a heat exchanger, and a secondary heat dissipation channel and a primary heat dissipation channel are respectively arranged on two sides of the heat exchanger. The top of the primary heat dissipation channel and the air inlet of the internal circulation fan are positioned in the same sealed cavity through the air outlet; an air outlet of the internal circulation fan is connected with one end of the internal circulation channel, the other end of the internal circulation channel is connected with the primary heat dissipation channel, a display device connected with the primary heat dissipation channel is arranged in the internal circulation channel, the display device is fixed through a clamping groove in the circulation channel, and the display device and the primary heat dissipation channel form a closed cavity together; the clamping groove is sequentially provided with a lug and heat insulation glass along the left side and a lug and a Fresnel lens along the right side by taking the display device as the center; the card slot passes through the display device body and forms a card slot top channel and a card slot bottom channel along the airflow flowing direction, the upper surface and the lower surface of the card slot are both provided with lugs, and the height of the lugs is 1/6-1/3 of the height of the display device.
The Fresnel lens and the heat insulation glass are respectively arranged on two sides of the display device; and forms a closed chamber together with the primary heat dissipation channel; the inner part of the inner circulation channel passes through the display device body and forms a top channel and a bottom channel along the airflow flowing direction, the surface of the channel is provided with a lug, and the height of the lug is 1/6-1/3 of the height of the display device;
the secondary heat dissipation channel is connected with and provided with an air inlet, and the other end of the secondary heat dissipation channel is an air outlet and is positioned in the same cavity with the air inlet of the external circulation fan.
Firstly, the heat dissipation of the display device is carried out by adopting internal circulation, and the heat exchange efficiency of internal circulation airflow and the display device is improved by the design of the convex pieces; the internal circulation aims at the heat dissipation of the display device, the heat exchange power is 20-50W, and the heat dissipation of the display device with 100-500 lumen can be met;
in the industry at present, two heat dissipation methods are adopted. The closed circulation has no proper means, improves the heat dissipation capacity of the internal circulation, so the brightness and the power of the internal circulation can not meet higher requirements; there is also a closed cycle, for example, CN201410400898.1 patent of an air-cooled heat dissipation device of a projector, which mixes the heat of the display device and the light source in the existing heat dissipation manner to dissipate heat, and the heat dissipation of the display device with 100-500 lumens also requires more than 150 watts of heat dissipation power to dissipate heat normally;
the height of the lug is 1/6-1/3 of the height of the display device. According to the measured data, 12 in CFM to the display device temperature is 70 degrees as the upper limit, and display device both sides width is in 15 mm's space, and under the prerequisite that both sides closure device is not the heat-generating body, under the circumstances that the bottom has increased 1/5 display device height, actual data does, has promoted the temperature rise of 6 degrees centigrade, is equivalent to the heat that these 6 degrees promoted the representation, because the promotion of heat exchange efficiency has been brought out by the air current. Thereby contributing to the heat exchange efficiency of the heat exchanger at the rear end.
The external circulation air flow firstly dissipates heat by the heat exchanger, and sequentially passes through the heat exchanger, the external circulation fan, other radiators and the like, and the external circulation fan can improve the heat exchange efficiency of the heat exchanger and dissipate heat of the light source.
One end of the secondary heat dissipation channel is connected with the screen frame shell and is provided with an air inlet, and the other end is an air outlet and an air inlet of the external circulation fan are positioned in the same cavity to form external circulation; the hot air is exhausted through the air outlet of the external circulation fan.
The display device is characterized in that the heat insulation glass and the Fresnel lens are arranged in the inner circulation channel opposite to the display device, so that a light path capable of transmitting light for imaging is formed, and the inner circulation and the outer circulation air flow are sealed.
The outer circulation fan is detachably connected to the projector shell, the number of the outer circulation fan is larger than 1, the outer circulation fan can also be directly arranged in the whole projector shell, and the number of the outer circulation fan is larger than or equal to 1. The outer circulation fan body undertakes the heat dissipation of the light source and the like, and the negative pressure generated by the outer circulation fan body is beneficial to the outer circulation airflow of the heat exchanger and the heat dissipation of the secondary heat dissipation channel; the air flow rate for strengthening the external circulation finally discharges the heat out of the whole machine.
And the air inlet is provided with a dust screen. The dust separation net is detachably mounted and used for separating external dust, and the service life of the device is further prolonged.
The inner circulation channel is connected with an arc ventilation section and a horizontal rectangular ventilation end, the arc ventilation section is connected with an air outlet of the inner circulation fan, and the horizontal rectangular ventilation end is connected with the stage heat dissipation channel. The internal circulation channel can be set as a compression expansion channel according to the fluid mechanics principle, so that the temperature of air flow flowing through the display device can be reduced, and a better heat exchange effect is realized; the same can also be arranged into a smooth channel with the same area, so that the energy dissipation of the internal circulation heat dissipation airflow is prevented.
One end of a screen frame main body for fixing the display device is connected with the primary heat dissipation channel, and the other end of the screen frame main body is provided with a splitter vane. The splitter vane is used for dividing the internal circulation heat dissipation airflow; the shape of the splitter vane is matched with that of the arc-shaped ventilation section, so that the flowing area of air is not changed and the air is not compressed or expanded in the flowing process, and the two sides can have the same air outlet temperature after absorbing different heat for better heat dissipation. This is most efficient. Namely, the heat taken away by the air flows on the two sides can be maximized, so that the energy loss is reduced; meanwhile, another aerodynamic principle can be adopted, air is compressed through the splitter plate, then enters the heat dissipation channels on the two sides of the display device, and then is expanded. When the expansion is carried out, the temperature of the airflow is reduced, which is beneficial to heat absorption. Both methods can be used as measured.
And setting the average temperature of the air flows at two sides as T1, setting the temperature of the display device light receiving surface as the reverse surface as Tp, setting the temperature difference at two sides of the display device as dT, and setting the temperature of the light emitting surface as the front surface as Tp-dT. Meanwhile, based on the fact that the wind speeds on the two sides are close, the structural design is close, the heat capacity coefficients of the air are the same, and the heat capacity coefficient is set to be Re;
the flow of the airflow on two sides of the splitter plate is divided into X-light-emitting surface airflow; and Y-light receiving surface airflow, wherein the airflows on the two sides take away different heat, but the same temperature difference can be kept, and the heat taken away again is Hx and Hy:
Hx＝X*Re*((Tp-T1)
hy ═ Y × Re (Tp-T1) it follows that the heat taken off on both sides contrasts only positively with the air flow rate;
further calculation and analysis are carried out, and the difference of the heat dissipation capacity of the two sides is only positively correlated with the temperature difference between the temperature of the heating elements on the two sides and the temperature of the heat dissipation airflow, namely the temperature difference; the following formula is deduced from this:
X/Y＝((Tp-dT)-T1)/(Tp-T1).
according to the practical application scenario, Tp is the temperature of the display device, and according to the specification and the limiting condition of the display device, the temperature is set to be the maximum normal working temperature of the display device, which is usually 70 degrees, and dT is the temperature difference between two sides of the display device. According to experimental data, the flow CFM of the total heat dissipation airflow is 12 at the room temperature of 30 ℃, and the temperature difference is about 12 degrees according to the empirical measurement data under the common structure.
By combining the experiences of different room temperatures, different display device specifications and the like, the common experience temperature difference of 10 degrees can be initially taken as a calculation basis. (this temperature difference is measurable and relatively stable depending on the environment, display device). T1 is the average temperature of the flowing heat dissipating airflow. We take the weighted average temperature of the temperatures entering and leaving the display device location as the average temperature of the air flow. According to the design logic of the present invention, we calculate the setting, the temperature entering the display device position is 40 degrees, the temperature leaving the display device is 50 degrees, and the average temperature is 45 degrees. From this, data based on the set logic is derived:
X/Y＝((70-10)-45)/(70-45)
X/Y＝3/5
therefore, we can obtain that one implementation mode under the scheme is as follows:
when the temperature of the display device works at 70 ℃, the temperature of the airflow at the position of the display device is 50 ℃, the temperature of the airflow at the position of the display device is 40 ℃, and the temperature difference caused by the performance of the display device is 10 ℃, the splitter vane can divide the airflow blown out by the internal circulation heat radiation fan into 3: 5; the best heat dissipation effect can be achieved.
Further, based on actual test data, temperature differences of different display devices, and operating temperature settings of different display devices, the formula X/Y ═ ((Tp-dT) -T1)/(Tp-T1) can be used to set the split ratio of the splitter plate to the air flow easily and quickly.
And further analysis is carried out, and a simple method is provided for testing and determining the air flow distribution ratio based on the logic. And measuring the temperature at the air outlet of the light receiving surface and the air outlet of the light emitting surface of the display device. By adjusting the proportion of the air flow on the two sides of the display device by the splitter plate, the temperature of the internal circulation air flow on the two sides is consistent after the two sides leave the display device, and the optimal proportion of the air flow divided into the air flow on the light receiving surface and the air flow on the light emitting surface by the splitter plate is achieved.
And a heat exchange surface is arranged between the primary heat dissipation channel and the secondary heat dissipation channel. And the end of the screen frame shell, at which the internal circulation airflow leaves the display device, is an air outlet end, and a larger area relative to the air outlet is connected with the heat exchanger at the end. According to the principle related to heat conduction, the larger contact area can transfer heat to the main heat exchanger more quickly.
The outer wall of the screen frame shell and the outer wall of the internal circulation channel are both provided with radiating fins; the heat dissipation fins can improve the heat exchange efficiency, are preferably arc-shaped and can be detachably mounted. The screen frame shell is made of high-heat-conductivity materials, and the arrangement of the radiating fins increases the ventilation area and can enhance the heat exchange efficiency. A high thermal conductivity material such as a metal, or an alloy such as a zinc alloy aluminum alloy.
The inner circulation channel is positioned at the display device and is provided with an upper cover or a bottom cover which are movably connected. For the convenience of structural design and maintenance of the liquid crystal panel, the top or bottom channel surrounding the display device may be disassembled to become an independent upper or bottom cover.
The display device adopts a liquid crystal screen.
And one or more layers of heat dissipation coatings are arranged inside the screen frame shell after the screen frame shell is treated by adopting a sand blasting process. The inner surface and the outer surface of the screen frame shell are subjected to certain specific treatment, so that the surface heat exchange coefficient can be improved. The heat generated on the liquid crystal screen is taken away by the airflow.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the height of the lug is 1/6-1/3 of the height of the display device. According to the measured data, 12 are being regarded as at CFM to the LCD screen temperature is 70 degrees for the upper limit, and LCD screen both sides width is in 15 mm's space, and under the prerequisite that both sides closure device is not the heat-generating body, under the circumstances that the bottom has increased 1/5 LCD screen height, actual data do, promoted the temperature rise of 6 degrees centigrade, be equivalent to the heat that these 6 degrees promoted the representation, because the promotion of heat exchange efficiency has been brought out by the air current. Thereby contributing to the heat exchange efficiency of the heat exchanger at the rear end.
2. The screen frame shell is made of high-heat-conductivity materials, and the arrangement of the radiating fins increases the ventilation area and can enhance the heat exchange efficiency.
3. The internal circulation channel is set as a compression expansion channel according to the basic mechanics principle, so that the temperature of air flow flowing through the display device can be reduced, and a better heat exchange effect is realized.
4. And a splitter vane with the same curvature as that of the arc-shaped ventilation section is arranged. The shape of the splitter vane is matched with that of the arc-shaped ventilation section, so that the flowing area of air is not changed and the air is not compressed or expanded in the flowing process, and better heat dissipation is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that for those skilled in the art, other relevant drawings can be obtained according to the drawings without inventive effort, wherein:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the slot of the present invention;
fig. 3 is a front view of the clamping groove of the present invention.
The labels in the figure are: 1-screen frame shell, 2-internal circulation fan, 3-internal circulation channel, 4-splitter plate, 5-lug, 6-heat insulation glass, 7-heat dissipation fin, 8-external circulation fan, 9-Fresnel lens, 10-display device, 11-dust separation net, 12-air inlet, 13-secondary heat dissipation channel, 14-primary heat dissipation channel, 15-heat exchanger, 16-projector shell and 17-card slot
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
A projector with a screen frame with high heat dissipation capacity comprises a projector shell 16 and a screen frame shell 1 arranged in the projector shell, wherein the screen frame shell 1 is connected with a heat exchanger 15, and a secondary heat dissipation channel 13 and a primary heat dissipation channel 14 are respectively arranged on two sides of the heat exchanger 15. The top of the primary heat dissipation channel 14 and the air inlet of the internal circulation fan 2 are positioned in the same closed cavity through the air outlet; an air outlet of the internal circulation fan 2 is connected with one end of the internal circulation channel 3, the other end of the internal circulation channel 3 is connected with the primary heat dissipation channel 14, a display device 10 connected with the primary heat dissipation channel 14 is arranged in the internal circulation fan, the display device 10 is fixed through a clamping groove 17 in the circulation channel 3, and the display device and the primary heat dissipation channel 14 form a closed chamber together; the clamping groove 17 is provided with a lug 5 and a heat insulation glass 6 in sequence along the left side and a lug 5 and a Fresnel lens 9 in sequence along the right side with the display device 10 as the center; the card slot 17 passes through the body of the display device 10 and forms a top channel of the card slot 17 and a bottom channel of the card slot 17 along the airflow flowing direction, the upper surface and the lower surface of the card slot 17 are both provided with the lugs 5, and the height of the lugs 5 is 1/6-1/3 of the height of the display device 10; the secondary heat dissipation channel 13 is connected with and provided with an air inlet 12, and the other end is an air outlet which is positioned in the same cavity with the air inlet of the external circulation fan 8.
When in work: firstly, the heat dissipation of the display device 10 is carried out by adopting internal circulation, and the heat exchange efficiency of internal circulation airflow and the display device 10 is improved by the design of the convex pieces 5; the internal circulation aims at the heat dissipation of the display device 10, the heat exchange power is 20-50W, and the heat dissipation of the display device 10 with 100-500 lumen can be met;
the height of the lug 5 is 1/6-1/3 of the height of the display device 10. According to the measured data, 12 in CFM, the temperature of the display device 10 is 70 degrees as the upper limit, the width of the two sides of the display device 10 is in the space of 15mm, the closing devices on the two sides are under the precondition that the heating body is not generated, under the condition that the height of the display device 10 is increased by 1/5 of the bottom, the actual data is that the temperature rise of 6 degrees is increased, which is equivalent to the heat represented by the 6 degrees, and the heat is brought out by the air flow due to the increase of the heat exchange efficiency. Thereby contributing to the heat exchange efficiency of the heat exchanger 15 at the rear end.
The external circulation air flow first radiates heat from the heat exchanger 15, and passes through the heat exchanger 15, the external circulation fan 8, and other radiators in this order, so that the external circulation fan 8 can improve the heat exchange efficiency in the heat exchanger 15 and also radiate the heat of the light source.
One end of the secondary heat dissipation channel 13 is connected with the screen frame shell 1 and is provided with an air inlet 12, and the other end is an air outlet and is positioned in the same cavity with the air inlet of the external circulation fan 8 to form external circulation; the hot air is discharged through the air outlet of the external circulation fan 8.
The display device 10 is provided with the heat insulation glass 6 and the Fresnel lens 9 in the opposite inner circulation channel, thereby forming a light path capable of light imaging and sealing the inner circulation and the outer circulation air flow.
The features and properties of the present invention will be described in further detail with reference to the following examples.
Example one
The utility model discloses the better embodiment provides a projector with high heat-sinking capability screen frame, the connection can be dismantled on the projector shell to outer circulation fan 8, and quantity is greater than 1. And a dust screen 11 is arranged on the air inlet 12. The inner circulation channel 3 is connected with an arc ventilation section and a horizontal rectangular ventilation end, the arc ventilation section is connected with an air outlet of the inner circulation fan 2, and the horizontal rectangular ventilation end is connected with the stage heat dissipation channel 14. One end of the display device 10 is connected with the primary heat dissipation channel 14, and the other end is provided with the splitter plate 4.
When in work: the internal circulation channel can be set as a compression expansion channel according to the fluid mechanics principle, so that the temperature of the air flow flowing through the display device 10 can be reduced, and a better heat exchange effect is realized; the same can also be arranged into a smooth channel with the same area, so that the energy dissipation of the internal circulation heat dissipation airflow is prevented.
One end of a screen frame main body of the fixed display device 10 is connected with the primary heat dissipation channel 14, and the other end of the screen frame main body is provided with the splitter 4. The splitter plate 4 is used for dividing internal circulation heat dissipation airflow; the shape of the splitter vane 4 is matched with the shape of the arc-shaped ventilation section, so that the flowing area of air is not changed and the air is not compressed or expanded in the flowing process, and the two sides can have the same air outlet temperature after absorbing different heat for better heat dissipation. This is most efficient. Namely, the heat taken away by the air flows on the two sides can be maximized, so that the energy loss is reduced; meanwhile, another aerodynamic principle can be adopted, and air is compressed by the splitter plate 4, then enters the heat dissipation channels at two sides of the display device 10, and is expanded. When the expansion is carried out, the temperature of the airflow is reduced, which is beneficial to heat absorption. Both methods can be used as measured.
Let the average temperature of the air flow on both sides be T1, the temperature of the display device 10 is Tp when the light receiving surface is the reverse surface, the temperature difference between the two sides of the display device 10 is dT, and the temperature of the light emitting surface is Tp-dT when the light emitting surface is the front surface. Meanwhile, based on the fact that the wind speeds on the two sides are close, the structural design is close, the heat capacity coefficients of the air are the same, and the heat capacity coefficient is set to be Re;
the flow of the airflow at the two sides of the splitter 4 is divided into the airflow at the X-light-emitting surface; and Y-light receiving surface airflow, wherein the airflows on the two sides take away different heat, but the same temperature difference can be kept, and the heat taken away again is Hx and Hy:
Hx＝X*Re*((Tp-T1)
hy ═ Y × Re (Tp-T1) it follows that the heat taken off on both sides contrasts only positively with the air flow rate;
further calculation and analysis are carried out, and the difference of the heat dissipation capacity of the two sides is only positively correlated with the temperature difference between the temperature of the heating elements on the two sides and the temperature of the heat dissipation airflow, namely the temperature difference; the following formula is deduced from this:
X/Y＝((Tp-dT)-T1)/(Tp-T1).
according to the practical application scenario, Tp is the temperature of the display device 10, which is set to the maximum normal operating temperature of the display device 10, typically 70 degrees, according to the display device specification and the limiting conditions, and dT is the temperature difference between the two sides of the display device 10. According to experimental data, the flow CFM of the total heat dissipation airflow is 12 at the room temperature of 30 ℃, and the temperature difference is about 12 degrees according to the empirical measurement data under the common structure.
By combining the experiences of different room temperatures, different display device 10 specifications and the like, the common experience temperature difference of 10 degrees can be initially taken as the calculation basis. T1 is the average temperature of the flowing heat dissipating airflow. We take the weighted average temperature of the temperatures entering the display device 10 and leaving the display device 10 as the average temperature of the air flow. According to the design logic of the present invention, we calculate the setting, the temperature entering the position of the display device 10 is 40 degrees, the temperature leaving the display device 10 is 50 degrees, and the average temperature is 45 degrees. From this, data based on the set logic is derived:
X/Y＝((70-10)-45)/(70-45)
X/Y＝3/5
therefore, we can obtain that one implementation mode under the scheme is as follows:
when the temperature of the display device 10 is 70 degrees, the temperature of the air flow exiting the display device 10 is 50 degrees, the temperature entering the display device 10 is 40 degrees, and the temperature difference caused by the performance of the display device 10 is 10 degrees, the splitter plate 4 divides the air flow blown out by the internal circulation heat dissipation fan 1 into 3: 5; the best heat dissipation effect can be achieved.
Further analysis, based on actual experimental data, the temperature difference between different display devices 10, and the operating temperature setting of different display devices 10, the formula X/Y ═ ((Tp-dT) -T1)/(Tp-T1) can be used to easily and quickly set the split ratio of the splitter 4 to the airflow.
And further analysis is carried out, and a simple method is provided for testing and determining the air flow distribution ratio based on the logic. The temperature is measured at the air outlet of the light receiving surface and the air outlet of the light emitting surface of the display device 10. By adjusting the proportion of the air flow on the two sides of the splitter plate to split the air flow on the two sides of the display device 10 until the temperatures of the internal circulation air flows on the two sides are consistent after the two sides leave the display device, the optimal proportion of the air flow divided into the air flow on the light receiving surface and the air flow on the light emitting surface by the splitter plate 4 is achieved.
Example two
In this embodiment, on the basis of the first embodiment, further: and the inner wall of the screen frame shell 1 and the outer wall of the internal circulation channel 3 are provided with radiating fins 7. The display device 10 employs a liquid crystal panel. The inner circulation channel 3 is provided with an upper cover or a bottom cover movably connected at the display device 10. After the interior of the screen frame shell 1 is treated by adopting a sand blasting process, one or more layers of heat dissipation coatings are arranged.
When in work: the heat radiating fins 7 adopt detachable arc-shaped heat radiating fins, so that the ventilation area is increased, better heat exchange is realized, the top or bottom structure of the liquid crystal screen can be detached to form an independent upper cover, and the upper cover is sealed and fixed on the main structure, so that the liquid crystal screen is convenient to overhaul.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalents and improvements made by those skilled in the art within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The utility model provides a projector with high heat-sinking capability screen frame which characterized in that: the projector comprises a projector shell (16) and a screen frame shell (1) arranged in the projector shell, wherein the screen frame shell (1) is connected with a heat exchanger (15), and a secondary heat dissipation channel (13) and a primary heat dissipation channel (14) are respectively arranged on two sides of the heat exchanger (15);
the top of the primary heat dissipation channel (14) and the air inlet of the internal circulation fan (2) are positioned in the same sealed cavity through the air outlet; an air outlet of the internal circulation fan (2) is connected with one end of the internal circulation channel (3), the other end of the internal circulation channel (3) is connected with the primary heat dissipation channel (14), a display device (10) connected with the primary heat dissipation channel (14) is arranged in the internal circulation fan, the display device (10) is fixed through a clamping groove (17) in the circulation channel (3), and the display device and the primary heat dissipation channel (14) form a closed chamber together; the clamping groove (17) is sequentially provided with a lug (5) and heat insulation glass (6) along the left side and a lug (5) and a Fresnel lens (9) along the right side by taking the display device (10) as the center;
the clamping groove (17) passes through the body of the display device (10) and forms a top channel of the clamping groove (17) and a bottom channel of the clamping groove (17) along the airflow flowing direction, the upper surface and the lower surface of the clamping groove (17) are provided with lugs (5), and the height of each lug (5) is 1/6-1/3 of the height of the display device (10);
the secondary heat dissipation channel (13) is connected with and provided with an air inlet (12), and the other end of the secondary heat dissipation channel is an air outlet which is positioned in the same cavity with the air inlet of the external circulation fan (8).
2. The projector as claimed in claim 1, wherein the frame has a high heat dissipation capability, and the projector further comprises: the external circulation fan (8) is detachably connected to the projector shell, and the number of the external circulation fan is more than 1.
3. The projector as claimed in claim 1, wherein the frame has a high heat dissipation capability, and the projector further comprises: and the air inlet (12) is provided with a dust screen (11).
4. The projector as claimed in claim 1, wherein the frame has a high heat dissipation capability, and the projector further comprises: the inner circulation channel (3) is connected with an arc-shaped ventilation section and a horizontal rectangular ventilation end, the arc-shaped ventilation section is connected with an air outlet of the inner circulation fan (2), and the horizontal rectangular ventilation end is connected with the stage heat dissipation channel (14).
5. The projector as claimed in claim 4, wherein the frame has a high heat dissipation capability, and the projector further comprises: one end of the display device (10) is connected with the primary heat dissipation channel (14), and the other end of the display device is provided with the splitter plate (4).
6. The projector as claimed in claim 1, wherein the frame has a high heat dissipation capability, and the projector further comprises: and the inner wall of the screen frame shell (1) and the outer wall of the internal circulation channel (3) are both provided with radiating fins (7).
7. The projector as claimed in claim 1, wherein the frame has a high heat dissipation capability, and the projector further comprises: the display device (10) adopts a liquid crystal screen.
8. The projector as claimed in claim 1, wherein the frame has a high heat dissipation capability, and the projector further comprises: the inner circulation channel (3) is positioned at the display device (10) and is provided with an upper cover or a bottom cover which are movably connected.
9. The projector as claimed in claim 1, wherein the frame has a high heat dissipation capability, and the projector further comprises: the interior of the screen frame shell (1) is treated by adopting a sand blasting process, and then one or more layers of heat dissipation coatings are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921824421.0U CN210666309U (en) | 2019-10-28 | 2019-10-28 | Projector with high heat dissipation capability screen frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN110716375A (en) * | 2019-10-28 | 2020-01-21 | 屏丽科技成都有限责任公司 | Projector with high heat dissipation capability screen frame |
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| CN110716375A (en) * | 2019-10-28 | 2020-01-21 | 屏丽科技成都有限责任公司 | Projector with high heat dissipation capability screen frame |
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Effective date of registration: 20220822 Address after: 610000 building 2-1, Tianfu Haichuang Park, No. 619, Jicui Road, Xinglong Street, Tianfu new area, Chengdu, Sichuan Patentee after: Chengdu Jiutian Huaxin Technology Co.,Ltd. Address before: 610000 second floor, building 10, block a, Tianfu Jingrong center, Science City, Tianfu new area, Chengdu, Sichuan Patentee before: LUXNPRO CHENGDU ELECTRONICS CO.,LTD. |
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