Laser projector

Abstract

The utility model provides a laser projector, which comprises a projector main body and a heat dissipation structure which are arranged in a shell, and is characterized in that the projector main body comprises a reflection structure, an optical component and a projection lens arranged between the reflection structure and the optical component; an air suction opening and an air exhaust opening are symmetrically formed in the two sides of the shell, the heat dissipation structure comprises a heat dissipation air channel, air inducing assemblies and an air blowing piece, a plurality of heat dissipation openings and air inlets connected with the air blowing piece are formed in the heat dissipation air channel, a heat dissipation area is formed above the heat dissipation openings, the optical component is arranged in the heat dissipation area, and the air inducing assemblies are arranged on the two sides of the heat dissipation area respectively. A first radiator and a second radiator for radiating heat of the optical component are correspondingly arranged on the outer side of the air inducing assembly, and the air inducing assembly is used for leading out hot air in the radiating area and radiating the first radiator and the second radiator at the same time, so that the radiating effect on the optical component is improved, the situation that heat is accumulated in the shell and cannot be timely eliminated is avoided, and the service life of the optical component is prolonged. Projection effect and service life are affected by damaged core parts.

Description

Technical Field

[0001] The present application relates to the technical field of projectors, and in particular to a laser projector. Background Art

[0002] When the projector is working, the internal optical components (such as: optical machine, light source, internal lens and circuit board, etc.) have multiple heat-generating components. In order to ensure that the projector can work stably and maintain a good projection effect, the heat-generating components need to be cooled. If the heat is not cooled in time, important components will be damaged and the projection effect will be affected. The existing projection equipment uses fans on both sides of the shell to cool the optical components. This heat dissipation method easily causes some heat to accumulate inside and cannot be dissipated in time, and the heat dissipation efficiency is low. Summary of the invention

[0003] The present application provides a laser projector, which effectively solves the problem of low heat dissipation efficiency of the above-mentioned existing projectors, and adopts the following technical solutions:

[0004] A laser projector comprises a projector body and a heat dissipation structure arranged in a shell, wherein the projector body comprises a reflection structure and an optical component, and a projection lens arranged between the reflection structure and the optical component; air inlets and air outlets are symmetrically arranged on both sides of the shell, the heat dissipation structure comprises a heat dissipation duct, an air induction assembly and an air blowing member, the heat dissipation duct is provided with a plurality of heat dissipation ports and an air inlet connected to the air blowing member, a heat dissipation zone is formed above the heat dissipation ports, the optical component is arranged in the heat dissipation zone, the air induction assemblies are respectively arranged on both sides of the heat dissipation zone, a heat sink 1 and a heat sink 2 for dissipating heat from the optical component are respectively arranged on the outer side of the air induction assembly, the air induction assembly is used to draw out hot air in the heat dissipation zone and dissipate heat from the first heat sink and the second heat sink at the same time, the air induction volume of the air induction assembly is greater than the air blowing volume of the heat dissipation port, and the cold air in the shell can be sucked into the air induction assembly to dissipate heat from the first heat sink and the second heat sink, thereby ensuring that external air can circulate in the shell and reduce the overall temperature of the projector.

[0005] Preferably, at least one drainage slope is provided in the heat dissipation air duct, and the drainage slope guides the air to the heat dissipation ports respectively.

[0006] Preferably, the radiator 1 and the radiator 2 both include an isolation frame and a heat conducting component, and a heat dissipation group arranged in the isolation frame. The optical component and the heat dissipation group are thermally connected through the heat conducting component. Heat dissipation channels respectively connected to the air induction component and the exhaust port are provided on both sides of the isolation frame to guide the heat on the optical component to the heat dissipation group for heat dissipation, and cooperate with the heat dissipation air duct to improve the heat dissipation effect.

[0007] Further preferably, the heat conduction assembly comprises a heat conduction plate and a plurality of heat conduction pipes, one end of the heat conduction pipe is connected to the heat conduction plate, and the other end is arranged in the heat dissipation group, and the heat conduction plate is arranged on the optical component.

[0008] Preferably, a support plate is also provided in the shell, and a flow channel is formed in the support plate. One end of the flow channel is connected to the air intake port, and the other end is provided with the radiator 1. The radiator 2 and the heat dissipation structure are both arranged on the flow channel; the air induced component can introduce external cold air into the shell through the flow channel to dissipate the heat of the radiator 1 and the radiator 2, thereby improving the heat dissipation efficiency.

[0009] Further preferably, the air induction assembly includes fan 1 and fan 2 connected to radiator 1, and fan 3 connected to radiator 2, and fan 1 is connected to the flow channel.

[0010] Preferably, it also includes a circuit board, which is arranged on the shell and located between the radiator one and the radiator two, electrically connecting the optical component, the blowing member, the air induced component, the radiator one and the radiator two, and can dissipate heat for the optical component while also dissipating heat for the circuit board.

[0011] Preferably, the air intake port is arranged at the lower side of the air exhaust port, and the exhausted hot air will flow upward to avoid being sucked into the shell by the air intake port below.

[0012] The beneficial effects of this application are:

[0013] (1) A heat dissipation zone is formed between the heat dissipation duct and the air induction components respectively arranged on both sides thereof. The optical components of the projector are arranged in the heat dissipation zone. The air blowing member transports cold air to the heat dissipation duct to dissipate the heat from the heat dissipation port to the optical components. A radiator 1 and a radiator 2 are respectively arranged on the outer side of the air induction component to cooperate with the heat dissipation duct to dissipate the heat of the optical components. The air induction component draws the air in the heat dissipation zone to the outside to ensure the air flow in the heat dissipation zone. At the same time, the radiator 1 and the radiator 2 can also dissipate the heat, which can further improve the heat dissipation effect on the optical components.

[0014] (2) The air blowing member draws air into the shell from the air inlets on both sides of the shell, and after the air is dissipated in the heat dissipation zone, the air in the heat dissipation zone is led out to both sides through the air induction components on both sides. The air induction volume of the air induction components is greater than the air blowing volume of the heat dissipation ports, so that a heat dissipation cycle is formed between the shell and the outside, which can dissipate heat and cool the entire interior of the projector, prevent heat from accumulating in the shell, and ensure that the heat can be dissipated in time.

[0015] (3) The isolation frame isolates the heat dissipation group from the outside, and the heat of the heat dissipation group will not diffuse to the outside of the isolation frame, thereby affecting the operation of other components; the support plate forms a flow channel connecting the air intake port and the air induction component. When the air in the heat dissipation area is drawn out by the air in the air induction component, it can also introduce external air into the shell to dissipate heat from the heat dissipation group, thereby improving the heat dissipation effect.

[0016] (4) The heat dissipation structure is arranged on the support plate, and the heat-generating components are concentrated in the heat dissipation area for heat dissipation, which effectively improves the space utilization and reduces the overall volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of the present application;

[0018] Figure 2 It is a schematic diagram of the internal structure of the first perspective of this application;

[0019] Figure 3 is a schematic diagram of the internal structure of the second viewing angle of the present application (the projector body is not shown);

[0020] Figure 4 It is a three-dimensional schematic diagram of the heat dissipation structure of the present application;

[0021] Figure 5 It is a schematic diagram of the flow direction of the air duct of this application;

[0022] Figure 6 It is a bottom view of the air duct of the present application;

[0023] Figure 7 It is a top view of this application.

[0024] In the figure:

[0025] 10. housing, 110. air inlet, 120. air outlet, 130. projection port, 20. projection lens, 30. reflection structure;

[0026] 40. heat dissipation structure, 400a. radiator 1, 400b. radiator 2, 410. heat dissipation duct, 4101. drainage slope, 411. heat dissipation port, 412. air inlet, 420. air blowing member, 430. air induction assembly, 440. heat conduction assembly, 4410. heat conduction pipe, 4420. heat conduction plate, 450. heat dissipation group, 460. isolation frame, 4610. heat dissipation duct;

[0027] 50. Circuit board, 60. Support plate, 610. Flow channel, 100. Heat dissipation area. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described in the present application are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0029] See also Figures 1 to 7 , further illustrating the present application, a laser projector includes a projector body and a heat dissipation structure 40 disposed in a housing 10, the projector body includes a reflective structure 30 and an optical component (not shown), and a projection lens 20 disposed between the reflective structure 30 and the optical component, the optical component is projected into the reflective structure 30 through the projection lens 20, and the reflective structure 30 is used to project the image projected by the projection lens 20 onto a screen from a projection port 130 on the reflective structure 30;

[0030] Combination Figure 3 The housing 10 is symmetrically provided with air inlets 110 and air outlets 120 on both sides. The heat dissipation structure 40 includes a heat dissipation duct 410, an air induction assembly 430 and a blasting member 420. The heat dissipation duct 410 is provided with a plurality of heat dissipation ducts 411 and an air inlet 412 connected to the blasting member 420. The blasting member 420 can be a blower. Figure 2 A heat dissipation zone 100 is formed above the heat dissipation port 411, the optical component is arranged in the heat dissipation zone 100, the air induced components 430 are respectively arranged on both sides of the heat dissipation zone 100, and the outer sides of the air induced components 430 are respectively provided with a heat sink 1 400a and a heat sink 2 400b for dissipating heat from the optical component. The air induced components 430 are used to draw out the hot air in the heat dissipation zone 100 to ensure the air flow in the heat dissipation zone 100, and at the same time dissipate the heat from the heat sink 1 400a and the heat sink 2 400b, thereby dissipating the heat from the optical component, wherein the air inlet side of the air induced component 430 corresponds to the heat dissipation zone 100, and the air outlet side corresponds to the exhaust port 120.

[0031] Combination Figure 6At least one drainage slope 4101 is provided in the heat dissipation duct 410, and the drainage slope 4101 guides the cold air to the heat dissipation port 411 for blowing out, so as to dissipate heat at multiple positions of the optical component. The heat dissipation port 411 can extend to the heating part of the optical component, and can quickly cool down the heating part. In this embodiment, the heat dissipation duct 410 is arc-shaped, and there are two heat dissipation ducts 410 symmetrically distributed on both sides of the bottom of the projector body, and there are two corresponding air blowing members 420; the arc-shaped structure is conducive to reducing the flow resistance of air in the heat dissipation duct 410, which can reduce airflow loss and noise, and make the air flow more stably; in other embodiments not shown, there can be multiple heat dissipation ducts 410, and the heat dissipation duct 410 can also be right-angled or other shapes.

[0032] Combination Figure 5 and Figure 7 When the projector is working, the blowing member 420 draws the cold air outside the shell 10 into the shell 10 from the air inlets 110 on both sides, and transports the cold air to the heat dissipation area 100 through the heat dissipation duct 410 to dissipate the heat of the optical components. The hot air after the heat dissipation is drawn out to both sides of the shell 10 by the air induction component 430, forming a heat dissipation cycle in the shell 10, and cooling the internal part of the projector as a whole to avoid heat accumulation in the shell 10 and ensure that the heat can be dissipated in time; it can be understood that the air outlet 411 is smaller than the air induction volume of the air induction component 430, so as to ensure that the hot air after the heat dissipation can be discharged in time and will not accumulate in the shell 10. The air induction component 430 can draw the cold air in the shell 10 to dissipate the heat of the heat dissipation group 450, so as to keep the air inside the shell 10 and the external air circulating.

[0033] The air induced component 430 is provided with the heat sink 1 400a and the heat sink 2 400b on one side away from the heat dissipation area 100 for dissipating heat to the optical components at the same time. The air induced component 430 draws out the hot air in the heat dissipation area 100 and blows air to the heat sink 1 400a and the heat sink 2 400b respectively, thereby accelerating the heat dissipation of the optical components, improving the overall heat dissipation effect, ensuring that the optical components will not be damaged due to high temperature, and improving the image projection effect and service life.

[0034] Combination Figure 4The radiator 1 400a and the radiator 2 400b both include an isolation frame 460, a heat dissipation group 450 and a heat conduction component 440. The isolation frame 460 is provided with heat dissipation channels 4610 connecting the exhaust port 120 and the air induction component 430 on both sides. The heat dissipation group 450 is arranged in the isolation frame 460 along the extension direction of the heat dissipation channel 4610. The isolation frame 460 isolates the heat dissipation group 450 in the heat dissipation isolation frame 460 to prevent the heat dissipation of the heat dissipation group 450 from affecting the operation of other components, and to prevent the heat dissipated by the heat dissipation group 450 from being sucked into the air blowing member 420, thereby reducing the heat dissipation effect on the optical components. The heat dissipation group 450 is composed of a plurality of heat dissipating fins, which are arranged in parallel with a gap (not shown) in the middle. The air induction component 430 blows air into the heat dissipation channel 4610, and after the heat dissipation and cooling of the heat dissipation group 450 through the gap, the air is blown out from the exhaust port 120.

[0035] Combination Figure 4 The heat-conducting component 440 is thermally connected between the heat-dissipating group 450 and the optical component, and is used to transfer the heat from the optical component to the heat-dissipating group 450 to improve the heat dissipation effect, wherein the heat-conducting component 440 includes a heat-conducting plate 4420 and a plurality of heat-conducting pipes 4410, one end of the heat-conducting pipe 4410 is connected to the heat-conducting plate 4420, and the other end is arranged in the heat-dissipating group 450, the heat-conducting plate 4420 is arranged on the heat-generating part of the optical component, and the heat-conducting pipe 4410 can be solid or hollow, which is not limited here.

[0036] Combination Figure 3 and Figure 4 A support plate 60 is also provided in the shell 10, and a flow channel 610 is formed in the support plate 60. One end of the flow channel 610 is connected to the air inlet 110 on one side, and the other end is connected to the radiator 1 400a. The air induced component 430 includes a fan 1 and a fan 2 connected to the radiator 1 400a, and a fan 3 connected to the radiator 2 400b. The fan 1 is connected to the flow channel 610. The fan 1 can introduce external cold air into the shell 10 through the flow channel 610, thereby reducing the internal temperature of the shell 10 and improving the heat dissipation effect of the heat dissipation group 450. The heat dissipation structure 40 is arranged on the flow channel 610.

[0037] Combination Figure 3, also includes a circuit board 50, which is arranged on the shell 10 and is located between the radiator 1 400a and the radiator 2 400b. When the heat dissipation port 411 dissipates heat to the optical component, the air induction component 430 drives the hot air in the heat dissipation area 100 to flow to the outside of the shell 10, and can dissipate heat to the circuit board 50 at the same time, ensuring that the projector can work stably; the circuit board 50 is electrically connected to the optical component, the blowing member 420, the air induction component 430, the radiator 1 400a and the radiator 2 400b to control their operation.

[0038] The air intake port 110 is arranged at the lower side of the air outlet 120 to prevent the exhausted hot air from being sucked back into the shell body through the air intake port 110; the hot air will flow toward the top of the shell body 10 after being discharged through the air outlet 120, so the hot air will not be sucked into the shell body 10 from the air intake port 110, thereby ensuring the heat dissipation effect of the optical components.

[0039] When the projector is working, the blowing member 420 will suck the cold air from the air inlet 110 into the shell 10 and then transport it into the heat dissipation duct 410, blow the cold air out from the heat dissipation port 411, cool the optical components in the heat dissipation area, and the hot air after heat dissipation will be led to the outside through the air induced component 430. The air induced volume of the air induced component 430 is greater than the air blowing volume of the heat dissipation port 411, which will form a heat dissipation cycle between the shell 10 and the outside to ensure that the heat can be discharged in time. While exhausting air, the air induced component 430 will transport the external cold air and part of the cold air in the shell 10 into the heat dissipation duct 410 through the flow channel, cool the heat dissipation group 450 in the heat dissipation duct 410, and further dissipate heat and cool the optical components.

Claims

1. A laser projector, characterized in that: The invention comprises a projector body and a heat dissipation structure arranged in a shell, wherein the projector body comprises a reflection structure and an optical component, and a projection lens arranged between the reflection structure and the optical component; air inlets and air outlets are symmetrically arranged on both sides of the shell, the heat dissipation structure comprises a heat dissipation air duct, an air induction assembly and an air blowing member, the heat dissipation air duct is provided with a plurality of heat dissipation ports and an air inlet connected to the air blowing member, a heat dissipation zone is formed above the heat dissipation ports, the optical component is arranged in the heat dissipation zone, the air induction assemblies are respectively arranged on both sides of the heat dissipation zone, a radiator 1 and a radiator 2 for dissipating heat from the optical component are respectively arranged on the outer sides of the air induction assemblies, and the air induction assembly is used to draw out the hot air in the heat dissipation zone and dissipate heat from the radiator 1 and the radiator 2 at the same time.

2. The laser projector according to claim 1, characterized in that: At least one drainage slope is provided in the heat dissipation air duct, and the drainage slope guides the air to the heat dissipation ports respectively.

3. The laser projector according to claim 1, characterized in that: The radiator 1 and the radiator 2 both include an isolation frame and a heat conduction component, and a heat dissipation group arranged in the isolation frame. The optical component and the heat dissipation group are thermally connected through the heat conduction component. Heat dissipation channels respectively connected to the air induction component and the exhaust port are provided on both sides of the isolation frame.

4. The laser projector according to claim 3, characterized in that: The heat conduction assembly comprises a heat conduction plate and a plurality of heat conduction pipes, one end of the heat conduction pipe is connected to the heat conduction plate, and the other end is arranged in the heat dissipation group, and the heat conduction plate is arranged on the optical component.

5. The laser projector according to claim 1, characterized in that: A support plate is also provided in the shell, a flow channel is formed in the support plate, one end of the flow channel is connected to the air intake port, and the other end is provided with the radiator 1, and the radiator 2 and the heat dissipation structure are both arranged on the flow channel.

6. The laser projector according to claim 5, characterized in that: The air induction component includes a fan 1 and a fan 2 connected to the radiator 1, and a fan 3 connected to the radiator 2, and the fan 1 is connected to the flow channel.

7. The laser projector according to claim 1, characterized in that: It also includes a circuit board, which is arranged on the shell, located between the first heat sink and the second heat sink, and electrically connects the optical component, the air blowing member, the air induction assembly, the first heat sink and the second heat sink.

8. The laser projector according to claim 1, characterized in that: The air suction port is arranged at the lower side of the air discharge port.

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