Projector heat dissipation device
Through the internal circulation design of the internal circulation heat dissipation box, the problem of poor heat dissipation of heat in the projector chamber type structure is solved, and a more efficient heat dissipation effect is achieved to ensure the stable operation of the projector.
Patent Information
- Application Number
- CN202421207310.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-29
AI Technical Summary
The existing projector heat dissipation structure cannot effectively dissipate heat inside the chamber type structure, resulting in poor heat dissipation effect of the projector during long-term use, affecting normal operation.
A kind of internal circulation heat dissipation box is designed, including a connecting shell, airflow channel, return chamber, first fan and heat dissipation member. The heat generated by the projection lamp group is absorbed through the internal circulation of the airflow. The hot air enters the fan again after cooling by the heat dissipation member to form a Internal circulation to dissipate heat and improve heat conduction efficiency.
It effectively improves the internal heat dissipation effect of the chamber type structure, improves the internal heat dissipation performance of the projector, and ensures the stable operation of the projector during long-term use.
Smart Images
Figure CN222337452U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of projector heat dissipation, in particular to a projector heat dissipation device. Background Art
[0002] A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to computers, VCDs, DVDs, BDs, game consoles, DVs, etc. through different interfaces to play corresponding video signals. Projectors are currently widely used in homes, offices, schools, and entertainment venues. There are different types of projectors, such as CRT, LCD, and DLP, depending on the working mode. The heat dissipation structure is an important part of the projector.
[0003] However, the existing technology has the following shortcomings: the existing projector heat dissipation structures all use a fan to blow air inward to dissipate heat, and the heat sinks mostly use a bonding heat conduction method, that is, the inner side of the heat sink is bonded to the heat-generating component, generally bonded to the back of the projection lamp, and the heat is transferred to the heat sink, and the heat is dissipated outward by heat conduction from the outer side of the heat sink. This method can only dissipate heat on the back of the projection lamp. When the projection lamp is used for a long time, the heat will also be transferred to the front of the projection lamp, and the front irradiation end of the projection lamp cannot be bonded to dissipate heat by the heat sink.
[0004] Generally speaking, there is a closed chamber-type structure between the irradiation end of the projection lamp and the lens assembly. Heat is also generated during the irradiation process and is transferred to the projection lamp. If the heat is transferred by bonding the heat sink, the heat in the chamber is difficult to transfer to the heat sink, resulting in poor heat dissipation, which affects the normal operation of the projector.
[0005] Therefore, it is necessary to propose a projector heat dissipation device to improve the heat dissipation inside the chamber type structure, thereby improving the internal heat dissipation effect of the projector. Utility Model Content
[0006] In order to solve the above problems, the utility model proposes a heat dissipation device for a projector to improve the heat dissipation inside a chamber type structure, thereby improving the internal heat dissipation effect of the projector.
[0007] The utility model is realized by the following technical solutions:
[0008] The utility model proposes a projector heat dissipation device, comprising a projection lamp group, an internal circulation heat dissipation box, and a lens assembly which are arranged in sequence and connected end to end and fixed, the internal circulation heat dissipation box comprising a connecting shell, a first fan, and a heat dissipation element, the first fan and the heat dissipation element are respectively fixedly connected to two sides of the connecting shell, an air flow channel and a reflux chamber are arranged in the connecting shell, the front and rear ends of the heat dissipation element are respectively connected and communicated with the air flow channel and the reflux chamber, the air flow channel is close to the projection lamp group, the front and rear ends of the first fan are respectively communicated with the air flow channel and the reflux chamber, the first fan blows air toward the air flow channel to absorb heat, the hot air is guided to flow into the reflux chamber after absorbing heat and cooling after the heat dissipation element, and then enters the first fan again, forming an internal circulation heat dissipation of the air flow.
[0009] Furthermore, a blowing port is provided at one end of the first fan, and the blowing port faces the air flow channel and is in communication with the air flow channel.
[0010] Furthermore, an air suction port is provided at one end of the first fan, and the air suction port faces the reflux chamber and is communicated with the reflux chamber.
[0011] Furthermore, the heat sink is vertically connected to and communicates with the air flow channel.
[0012] Furthermore, the space of the reflux chamber is larger than the space of the airflow channel.
[0013] Furthermore, a light-transmitting partition plate is provided in the connecting shell, the light-transmitting partition plate separates the airflow channel and the reflow chamber, and the light-transmitting partition plate is aligned with the projection lamp group.
[0014] Furthermore, a guide port is provided on one side of the connecting shell, and the guide port is respectively connected to the heat sink and the return chamber, and the guide port is away from the light-transmitting partition plate.
[0015] Furthermore, the internal circulation heat dissipation box also includes a second fan, which is fixedly connected to the outside of the heat dissipation element and faces the heat dissipation element.
[0016] Furthermore, the second fan is close to the portion where the heat sink is connected to the air flow channel.
[0017] Beneficial effects of the utility model:
[0018] The utility model adopts an internal circulation heat sink to dissipate heat for the space between the projection lamp group and the lens assembly, and the heat conduction of the internal circulation heat sink adopts the method of internal circulation of airflow, and the first fan blows toward the airflow channel to absorb the heat generated in the airflow channel when the projection lamp group is irradiated, and after the hot air enters the heat sink, the heat sink absorbs heat and cools the hot air, and then guides the cooled air to flow into the reflux chamber, and then the cooled air enters the first fan again, forming an internal circulation heat dissipation, so that the hot air can contact the heat sink in large quantities, so that the heat conduction efficiency of the heat sink is better and the heat dissipation efficiency is higher; in summary, the heat dissipation device of the projector effectively improves the heat dissipation inside the chamber type structure, thereby improving the internal heat dissipation effect of the projector. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a cross-sectional view of the heat dissipation device for a projector of the present utility model.
[0020] The reference numerals are as follows:
[0021] Projection lamp set 1;
[0022] Internal circulation heat dissipation box 2, connecting shell 1, air flow channel 211, reflux chamber 212, light-transmitting partition plate 213, air guide port 214, first fan 22, air blowing port 221, air suction port 222, heat dissipation element 23, second fan 24;
[0023] Lens assembly 3. DETAILED DESCRIPTION
[0024] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.
[0025] Please refer to Figure 1The utility model provides a heat dissipation device for a projector, comprising a projection lamp group 1, an internal circulation heat dissipation box 2, and a lens assembly 3 which are arranged in sequence and connected end to end. The internal circulation heat dissipation box 2 comprises a connecting shell 21, a first fan 22, and a heat dissipation element 23. The first fan 22 and the heat dissipation element 23 are respectively fixedly connected to both sides of the connecting shell 21. An air flow channel 211 and a reflux chamber 212 are arranged in the connecting shell 21. The front and rear ends of the heat dissipation element 23 are respectively connected and communicated with the air flow channel 211 and the reflux chamber 212. The heat dissipation element 23 presents a continuous back-and-forth meandering folding structure and forms a plurality of first ventilation slots and a plurality of second ventilation slots. The plurality of first ventilation slots are respectively arranged in sequence with intervals with the plurality of second ventilation slots. The head and tail ends of the plurality of first ventilation slots are The first ventilation slots 211 and the second ventilation slots 212 are all connected to the outside, that is, the first ventilation slots are oriented toward the inside of the connecting shell 21 to absorb heat, and the second ventilation slots are oriented toward the outside of the connecting shell 21 to dissipate heat. The airflow slots 211 are close to the projection lamp group 1, and the front and rear ends of the first fan 22 are respectively connected to the airflow slot 211 and the return chamber 212. The first fan 22 blows air toward the airflow slot to absorb heat. The hot air flows into the heat sink 23, absorbs heat, and then is guided to flow into the return chamber 212 and then enters the first fan 22 again, forming an internal circulation heat dissipation in the airflow.
[0026] In this embodiment, a circuit board is provided on the projection lamp group 1, and the circuit board is used to issue corresponding operation instructions to the internal circulation heat dissipation box 2 and the projection lamp group 1 to make it operate. The first fan 22 is electrically connected to the circuit board. When the projection lamp group 1 is turned on, the space between the projection lamp group 1 and the lens assembly 3 will also generate heat. Excessive accumulation of heat will also affect the normal operation of the projection lamp group 1. The internal circulation heat dissipation box 2 can dissipate heat for the space between the projection lamp group 1 and the lens assembly 3, and the heat conduction of the internal circulation heat dissipation box 2 adopts the method of internal circulation of airflow. The first fan 22 blows toward the airflow channel 211 to absorb the heat generated in the airflow when the projection lamp group 1 is irradiated. The heat generated by the heat path 211 is then absorbed by the hot air, and then the hot air enters the heat sink 23 from one end of the heat sink 23. After entering the heat sink 23, the hot air flows along the first ventilation slot inside the heat sink 23. During the flow of the hot air, the heat is transferred to the inner wall of the first ventilation slot. After the heat sink 23 absorbs heat and cools the hot air, the other end of the heat sink 23 guides the cooled air to flow into the return chamber 212. Then, the cooled air enters the first fan 22 again from the return chamber 212, forming an internal circulation heat dissipation. In this way, the hot air can contact the heat sink 23 in large quantities, so that the heat conduction efficiency of the heat sink 23 is better, and the heat dissipation efficiency of the space in the connection shell 21 is higher.
[0027] In summary, the heat dissipation device of the projector effectively improves the heat dissipation inside the chamber type structure, thereby improving the internal heat dissipation effect of the projector.
[0028] In the present embodiment, a blowing port 221 is provided at one end of the first fan 22, and the blowing port 221 faces the air flow channel 211 and is connected to the air flow channel 211. After the first fan 22 is started, wind blows from the blowing port 221 into the air flow channel 211, and absorbs the heat in the air flow channel 211 during the blowing process, and then the hot wind flows into the heat sink 23 for heat conduction; an air suction port 222 is provided at one end of the first fan 22, and the air suction port 222 faces the reflux chamber 212 and is connected to the reflux chamber 212. After the heat sink 23 absorbs the heat of the hot air, the cooled wind is guided to flow into the reflux chamber 212, sucked in by the air suction port 222, and then blown out from the blowing port 221, forming an internal circulation of the air flow.
[0029] In this embodiment, the heat sink 23 is vertically connected and communicated with the air flow channel 211. The vertical connection can reduce the wind speed when the hot air contacts the heat sink 23, thereby increasing the residence time of the hot air in the heat sink 23, allowing the heat sink 23 to absorb more heat.
[0030] In this embodiment, the space of the reflux chamber 212 is larger than the space of the airflow channel 211. Since the air output of the first fan 22 is constant, a smaller space of the airflow channel 211 means that more airflow is compressed when entering, and the distance between air becomes smaller, thereby improving the heat conduction efficiency between airflows and making the heat absorption effect more obvious. A larger space of the reflux chamber 212 means that when the cooled wind flows out, the distance between air becomes larger, thereby reducing the heat conduction efficiency.
[0031] In this embodiment, a light-transmitting partition plate 213 is provided in the connecting shell 21, and the light-transmitting partition plate 213 separates the airflow channel 211 and the reflux chamber 212, and the light-transmitting partition plate 213 is aligned with the projection lamp group 1; the setting of the light-transmitting partition plate 213 makes it impossible for the airflow channel 211 and the reflux chamber 212 to be conductive, and the airflow must flow around the light-transmitting partition plate 213, thereby prolonging the contact time between the airflow and the heat sink 23.
[0032] In this embodiment, a guide port 214 is provided on one side of the connecting shell 21, and the guide port 214 is respectively connected to the heat sink 23 and the return chamber 212, and the guide port 214 is away from the light-transmitting partition plate 213; the guide port 214 provides a passage for the cooled wind to enter the return chamber 212, and the setting of the guide port 214 away from the light-transmitting partition plate 213 prolongs the contact time between the airflow and the heat sink 23, so that the heat sink 23 can fully absorb heat.
[0033] In this embodiment, the internal circulation heat dissipation box 2 also includes a second fan 24, which is fixedly connected to the outer side of the heat sink 23 and faces the heat sink 23; the second fan 24 is electrically connected to the circuit board, and the second fan 24 is used to blow air to cool the outer side of the heat sink 23. When blowing air, the wind passes through multiple second ventilation slots to take away the heat of the heat sink 23. The air inlet of the second fan 24 is connected and conducted to the heat sink on the back of the projection lamp group 1. When the second fan 24 blows air toward the heat sink 23, the air it inhales also helps the heat sink to dissipate heat when passing through the heat sink, thereby killing two birds with one stone.
[0034] In this embodiment, the second fan 24 is close to the portion where the heat sink 23 is connected to the air flow channel 211. Since the heat is absorbed by the heat sink 23 nearby, such a configuration can improve the heat dissipation efficiency of the heat sink 23.
[0035] Of course, the present utility model may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present utility model.
Claims
1. A projector heat dissipation device, comprising a projection lamp assembly, an internal circulation heat dissipation box, and a lens assembly which are arranged in sequence and connected end to end, characterized in that: The internal circulation heat dissipation box includes a connecting shell, a first fan, and a heat sink. The first fan and the heat sink are respectively fixedly connected to two sides of the connecting shell. An airflow channel and a reflux chamber are provided in the connecting shell. The front and rear ends of the heat sink are respectively connected and communicated with the airflow channel and the reflux chamber. The airflow channel is close to the projection lamp group. The front and rear ends of the first fan are respectively communicated with the airflow channel and the reflux chamber. The first fan blows air toward the airflow channel to absorb heat. After the hot air absorbs heat and cools down through the heat sink, it is guided to flow into the reflux chamber and then enters the first fan again, forming an internal circulation heat dissipation of the airflow.
2. The projector heat dissipation device according to claim 1, characterized in that: An air outlet is provided at one end of the first fan, and the air outlet faces the air flow channel and is in communication with the air flow channel.
3. The projector heat dissipation device according to claim 1, characterized in that: An air suction port is provided at one end of the first fan, and the air suction port faces the reflux chamber and is communicated with the reflux chamber.
4. The projector heat dissipation device according to claim 1, characterized in that: The heat sink is vertically connected to and communicates with the air flow channel.
5. The projector heat dissipation device according to claim 1, characterized in that: The space of the reflow cavity is larger than the space of the air flow channel.
6. The projector heat dissipation device according to claim 1, characterized in that: A light-transmitting partition plate is arranged in the connecting shell, the light-transmitting partition plate separates the airflow channel and the reflow cavity, and the light-transmitting partition plate is aligned with the projection lamp group.
7. The projector heat dissipation device according to claim 6, characterized in that: A guide port is provided on one side of the connecting shell, and the guide port is respectively connected to the heat sink and the return chamber, and the guide port is far away from the light-transmitting partition plate.
8. The projector heat dissipation device according to claim 1, characterized in that: The internal circulation heat dissipation box also includes a second fan, which is fixedly connected to the outside of the heat dissipation element and faces the heat dissipation element.
9. The projector heat dissipation device according to claim 8, characterized in that: The second fan is close to the portion where the heat sink is connected to the air flow channel.