Optical module and display device

Abstract

The application belongs to the field of display and specifically discloses an optical module and a display device, which comprise a lamp plate and a cooling device, the lamp plate is provided with a plurality of array-arranged light-emitting units, the lamp plate is provided with a plurality of through holes, each through hole is located between two adjacent light-emitting units, and the cooling device is partially located in the through hole; the cooling device is used for conducting air below the lamp plate to the light-emitting units above the lamp plate. Through the above mode, the heat dissipation efficiency of the light-emitting units on the lamp plate is improved, so that the service life of the optical module is improved.

Description

Technical Field

[0001] This application relates to the field of displays, and more particularly to an optical module and a display device. Background Technology

[0002] As the number of light-emitting units in MiniLEDs increases, the problem of heat dissipation becomes increasingly serious. If heat transfer is inefficient and the temperature is high, the lifespan will be greatly shortened.

[0003] Currently, common solutions include coating heat dissipation materials, adding reflective films, and reducing current while maintaining brightness. However, these common heat dissipation methods often fail to provide targeted and rapid cooling for the light-emitting unit, and heat tends to accumulate at the location of the light-emitting unit, thus affecting the module's lifespan.

[0004] Therefore, how to improve the heat dissipation effect of the light-emitting unit and extend the life of the optical module has become an urgent problem to be solved in this field. Summary of the Invention

[0005] This application discloses an optical module and a display device, the purpose of which is to improve the heat dissipation effect of the light-emitting unit and extend the life of the optical module.

[0006] This application discloses an optical module, including a lamp board and a cooling device. The lamp board is provided with a plurality of light-emitting units arranged in an array, and the lamp board is provided with a plurality of through holes, each of which is located between two adjacent light-emitting units. The cooling device is partially located inside the through holes. The cooling device is used to conduct air below the lamp board to the light-emitting units above the lamp board.

[0007] Optionally, the optical module includes a back plate and multiple optical films. The back plate includes opposing side plates, and the lamp plate is connected to the opposing side plates. The multiple optical films are disposed above the lamp plate and connected to the top of the side plates. The lamp plate divides the cavity enclosed by the back plate into a first receiving cavity and a second receiving cavity. The first receiving cavity is located below the lamp plate, and the second receiving cavity is located above the lamp plate. The side plates are provided with air inlets corresponding to the positions of the first receiving cavity and air outlets corresponding to the positions of the second receiving cavity.

[0008] Optionally, a circuit board is provided at the bottom of the lamp panel, the circuit board is electrically connected to the cooling device, and the circuit board controls the cooling device to conduct the air below the lamp panel to the light-emitting unit above the lamp panel.

[0009] Optionally, the cooling device includes an upper air guide and a fan. The upper air guide is positioned above the through hole, corresponding to the position of the light-emitting unit. The fan is electrically connected to the circuit board and includes a fan blade support and multiple fan blades. A support layer is provided on the side of the optical film layer near the lamp board. The support layer is made of a light-transmitting material. The upper air guide is connected to the support layer. One end of the fan blade support passes through the upper air guide and is rotatably connected to the support layer. The other end extends into the through hole and is connected to the multiple fan blades, which are located within the through hole.

[0010] Optionally, a first magnet and a second magnet are respectively provided on both sides of the lamp panel where the fan is located. The first magnet and the second magnet have opposite magnetic properties. A first electromagnet and a second electromagnet are provided in the plurality of fan blades. The first electromagnet and the second electromagnet are arranged opposite each other on the horizontal axis. The first electromagnet and the second electromagnet have the same magnetic properties. The first electromagnet and the second electromagnet are respectively electrically connected to the circuit board, and the circuit board alternately supplies power to the first electromagnet and the second electromagnet.

[0011] Optionally, the cooling device further includes a lower air guide, which is connected to the side of the lamp panel away from the upper air guide and the position of the lower air guide corresponds to the position of the through hole. The lower air guide is used to guide the air at the bottom of the lamp panel into the through hole.

[0012] Optionally, the projected area of ​​the lower air guide on the lamp panel is larger than the projected area of ​​the upper air guide on the lamp panel.

[0013] Optionally, both the upper air guide and the lower air guide are arc-shaped, with the arc-shaped edge of the upper air guide extending toward the light-emitting unit and the arc-shaped edge of the lower air guide extending away from the lamp panel.

[0014] Optionally, each of the fan blade supports is also equipped with a temperature detection device, which is connected to the circuit board. When the temperature detection device detects that the temperature of an adjacent light-emitting unit is lower than a first preset temperature, the temperature detection device transmits a detection signal to the circuit board, and the circuit board controls the fan at the corresponding position to stop rotating. When the temperature detection device detects that the temperature of an adjacent light-emitting unit reaches or exceeds the first preset temperature, the temperature detection device transmits a detection signal to the circuit board, and the circuit board controls the fan at the corresponding position to rotate.

[0015] This application discloses a display device including a rear shell, and the display device further includes the aforementioned optical module, which is disposed within the rear shell.

[0016] This application improves the optical module by creating a through-hole between two adjacent light-emitting units on the lamp board. This through-hole opens the lamp board vertically and houses the cooling device. During operation, the light-emitting units generate significant heat in their vicinity. The area above the lamp board is primarily hot air, while the area below is relatively cooler. The cooling device directly guides the cooler air from below the lamp board to the vicinity of the light-emitting units, creating an effective airflow path. This cooling device then transfers the air from below the lamp board to the light-emitting units above, accelerating airflow and removing heat from the vicinity. Heat is more quickly conducted from the light-emitting units to the surrounding air, preventing heat accumulation at the unit location. This targeted heat dissipation effectively reduces the temperature of the light-emitting units, preventing localized overheating and improving their operational stability, thereby extending the lifespan of the optical module. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They serve to demonstrate implementation methods of this application and, together with the textual description, explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort. In the drawings:

[0018] Figure 1 This is a schematic diagram of the first embodiment of the optical module of this application;

[0019] Figure 2 This is a top view of the lamp panel in the first embodiment of the optical module of this application;

[0020] Figure 3 This is a schematic diagram of the fan in the first embodiment of the optical module of this application;

[0021] Figure 4 This is a schematic diagram of a second embodiment of the optical module of this application;

[0022] Figure 5 This is a schematic diagram of the third embodiment of the optical module of this application;

[0023] Figure 6 This is a schematic diagram of an embodiment of the display device of this application.

[0024] Among them, 10 is a display device; 100 is an optical module; 200 is a back cover; 110 is a lamp board; 111 is a light-emitting unit; 112 is a through hole; 113 is a circuit board; 120 is a cooling device; 121 is an upper air guide; 122 is a fan; 123 is a fan blade support; 124 is a fan blade; 130 is a lower air guide; 140 is a first magnet; 141 is a second magnet; 150 is a first electromagnet; 151 is a second electromagnet; 160 is a back plate; 161 is a side plate; 162 is an air outlet; 163 is an air inlet; 170 is an optical film layer; 171 is a first receiving cavity; 172 is a second receiving cavity; 180 is a support layer; and 190 is a temperature detection device. Detailed Implementation

[0025] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] Figure 1 This is a schematic diagram of the first embodiment of the optical module of this application. Figure 2 This is a top view of the lamp panel in the first embodiment of the optical module of this application. Figure 3 This is a schematic diagram of the fan in the first embodiment of the optical module of this application, as shown below. Figures 1 to 3 As shown in the figure, this application discloses an optical module 100, including a lamp board 110 and a cooling device 120. The lamp board 110 is provided with a plurality of light-emitting units 111 arranged in an array, and the lamp board 110 is provided with a plurality of through holes 112, each through hole 112 being located between two adjacent light-emitting units 111. The cooling device 120 is partially located inside the through hole 112. The cooling device 120 is used to conduct air below the lamp board 110 to the light-emitting units 111 above the lamp board 110.

[0027] This application improves the optical module 100 by creating a through hole 112 between two adjacent light-emitting units 111 on the lamp panel 110. This through hole 112 opens the lamp panel 110 vertically, and a portion of the cooling device 120 is placed within the through hole 112. During operation, the light-emitting units 111 generate a large amount of heat in their vicinity. The area above the lamp panel 110 is primarily hot air, while the area below is primarily cool air relative to the area above. The cooling device 120 directly guides the cool air below the lamp panel 110 to the vicinity of the light-emitting units 111, forming an effective airflow path. The cooling device 120 transfers air from below the lamp panel 110 to the light-emitting unit 111 above the lamp panel 110, thereby accelerating air circulation near the light-emitting unit 111 and carrying heat away from the vicinity of the light-emitting unit 111. Heat can be conducted from the light-emitting unit 111 to the surrounding air more quickly, thus preventing heat accumulation at the location of the light-emitting unit 111. This allows for targeted heat dissipation of the light-emitting unit 111, effectively reducing its temperature, avoiding localized overheating, improving the operational stability of the light-emitting unit 111, and thus extending the service life of the optical module 100.

[0028] It should be noted that in this application, light-emitting units 111 with a size range of 0.3mm to 0.5mm are mainly distributed on the light board 110. The size of the circular through hole 112 between the light-emitting units 111 is about 0.3mm*0.3mm, which does not affect the metal wiring between the light-emitting units 111.

[0029] Specifically, the optical module 100 includes a back plate 160 and a multi-layer optical film layer 170. The back plate 160 includes opposing side plates 161. The lamp plate 110 is connected to the opposing side plates 161. The optical film layer 170 is disposed above the lamp plate 110 and connected to the top of the side plates 161. The lamp plate 110 divides the cavity enclosed by the back plate 160 into a first receiving cavity 171 and a second receiving cavity 172. The first receiving cavity 171 is located below the lamp plate 110, and the second receiving cavity 172 is located above the lamp plate 110. The side plates 161 are provided with an air inlet 163 corresponding to the position of the first receiving cavity 171, and an air outlet 162 corresponding to the position of the second receiving cavity 172.

[0030] In this application, since the lamp panel 110 divides the cavity enclosed by the back panel 160 into a first receiving cavity 171 and a second receiving cavity 172, air will exist in the first receiving cavity 171 and the second receiving cavity 172. When the light-emitting unit 111 is working, the heat generated by the light-emitting unit 111 will make the second receiving cavity 172 above the lamp panel 110 mainly contain hot air, while the first receiving cavity 171 below the lamp panel 110 mainly contains cold air relative to the second receiving cavity 172. The cooling device 120 transfers the cold air in the first receiving cavity 171 to the second receiving cavity 172 and guides it to the position of the light-emitting unit 111, thereby accelerating the air circulation near the light-emitting unit 111 and carrying the heat away from the vicinity of the light-emitting unit 111. The heat can be conducted from the light-emitting unit 111 to the surrounding air more quickly.

[0031] By setting air inlets 163 and air outlets 162 on the side plates 161 of the back plate 160 at positions corresponding to the first and second accommodating cavities 171 and 172 respectively, external cold air can enter the first accommodating cavity 171 through the air inlet 163, while internal hot air can be carried out to the outside of the optical module 100 through the air outlet 162. This forms an airflow path from the first accommodating cavity 171 to the second accommodating cavity 172, effectively removing heat and accelerating airflow near the light-emitting unit 111, carrying heat away from the vicinity of the light-emitting unit 111. Heat can be conducted from the light-emitting unit 111 to the surrounding air more quickly, thus preventing heat accumulation at the position of the light-emitting unit 111. This allows for targeted heat dissipation of the light-emitting unit 111, effectively reducing its temperature, avoiding local overheating, improving the operational stability of the light-emitting unit 111, and thus extending the service life of the optical module 100.

[0032] In addition, a filter screen 152 can be installed near the air inlet 163 and the air outlet 162. The filter screen 152 can filter dust and impurities from the external environment that are about to enter the optical module 100, preventing dust and impurities from the external environment from corroding or contaminating the optical module 100 and causing damage to the optical module 100. In other words, by setting the filter screen 152, it is beneficial to improve the lifespan of the optical module 100 and ensure the quality of the optical module 100.

[0033] Furthermore, a circuit board 113 is provided at the bottom of the lamp panel 110. The circuit board 113 is electrically connected to the cooling device 120, and the circuit board 113 controls the cooling device 120 to conduct air below the lamp panel 110 to the light-emitting unit 111 above the lamp panel 110. The circuit board 113 is equipped with a control chip, which can precisely control the opening and closing of the cooling device 120. This ensures that the cooling device 120 is turned on when cooling the light-emitting unit 111 is needed and turned off when cooling is not needed, thereby saving energy.

[0034] Specifically, the cooling device 120 includes an upper air guide 121 and a fan 122. The upper air guide 121 is positioned above the through hole 112, corresponding to the position of the light-emitting unit 111. The fan 122 is electrically connected to the circuit board 113. The fan 122 includes a fan blade support 123 and multiple fan blades 124. A support layer 180 is provided on the side of the optical film layer 170 near the lamp board 110. The support layer 180 is made of a light-transmitting material. The upper air guide 121 is connected to the support layer 180. One end of the fan blade support 123 passes through the upper air guide 121 and is rotatably connected to the support layer 180. The other end extends into the through hole 112 and is connected to multiple fan blades 124, which are located within the through hole 112.

[0035] This application utilizes an additional support layer 180 provided below the optical film layer 170. The support layer 180 connects the fan blade support 123 of the fan 122 and the upper air guide 121, providing stable support for the fan 122 and the upper air guide 121, thereby ensuring the structural stability of the cooling device 120 during operation. In addition, since the support layer 180 is made of a light-transmitting material, the light emitted by the light-emitting unit 111 is not blocked by the support layer 180, and the light can pass through the support layer 180 normally, thereby ensuring the normal display of the display panel.

[0036] Air enters the first receiving cavity 171 below the lamp panel 110 through the air inlet 163 on the back plate 160. When the cooling device 120 is working, the circuit board 113 controls the fan 122 to rotate. The fan blade support 123 rotates, driving multiple fan blades 124 to cut the air. Under the action of the fan blades 124, the air flows upward, allowing it to quickly pass through the through hole 112 and exchange heat with the lamp panel 110. Then, it flows through the upper air guide 121 to the light-emitting unit 111, further carrying away the heat generated by the light-emitting unit 111. At this time, the hot air in the second receiving cavity 172 above the lamp panel 110 is discharged through the air outlet 162 and enters the external environment, thus forming a complete heat dissipation cycle and air circulation.

[0037] This application utilizes the principles of increasing heat dissipation area and accelerating airflow, as well as the air guiding effect of the upper air guide 121 (which enables air to flow efficiently to the area requiring heat dissipation and the light-emitting unit 111), to effectively improve the heat dissipation capacity of the optical module 100.

[0038] The upper air guide 121 can be arc-shaped, with its arc-shaped edge extending toward the position of the light-emitting unit 111. This allows the airflow generated by the fan 122 to extend along the edge of the arc-shaped upper air guide 121 toward the light-emitting unit 111 when it hits the upper air guide 121. The upper air guide 121 precisely guides the airflow generated by the fan 122 to the vicinity of each light-emitting unit 111, ensuring that the cool air can directly reach the key areas that need heat dissipation. In this way, heat can be carried away more quickly and evenly, avoiding local overheating.

[0039] It should be noted that in this application, the cooling device 120 can be processed at the micron and nano level using femtosecond laser micro-nano manufacturing technology, thereby enabling the fabrication of components such as the fan 122, the upper air guide 121, and connecting circuits on the lamp board 110, thus realizing the fabrication of the cooling device 120.

[0040] In order to reduce the energy consumption of the cooling device 120, this application also improves the control of the fan 122 in the cooling device 120, and the specific improvements are as follows:

[0041] A first magnet 140 and a second magnet 141 are respectively provided on both sides of the lamp board 110 where the fan 122 is located. The first magnet 140 and the second magnet 141 have opposite magnetic properties. A first electromagnet 150 and a second electromagnet 151 are provided in the multiple fan blades 124. The first electromagnet 150 and the second electromagnet 151 are arranged opposite each other on the horizontal axis. The first electromagnet 150 and the second electromagnet 151 have the same magnetic properties. The first electromagnet 150 and the second electromagnet 151 are electrically connected to the circuit board 113 respectively, and the circuit board 113 alternately supplies power to the first electromagnet 150 and the second electromagnet 151.

[0042] In this application, an electromagnet structure is installed inside the fan blade 124 of the fan 122, and permanent magnets are added to the two sides of the lamp board 110 corresponding to the positions of the fan 122. The circuit board 113 alternately supplies power to different electromagnets on the fan 122, so that the electromagnets alternately acquire magnetism. With the magnetic drive of the permanent magnets, the fan 122 can rotate continuously.

[0043] In the permanent magnet, the first magnet 140 can be N pole and the second magnet 141 can be S pole. When the first magnet 140 and the second magnet 141 in the fan 122 are energized, the magnetism can be either N pole or S pole. According to the principle that like poles of magnets repel and unlike poles attract, the first electromagnet 150 and the second electromagnet 151 are alternately energized to exhibit magnetism, so as to achieve the purpose of rotating the fan 122.

[0044] Since the first electromagnet 150 and the second electromagnet 151 are arranged opposite each other on the horizontal axis, when the first electromagnet 150 is energized and exhibits a magnetic N pole, under the repulsive action of the like poles of the first magnet 140, the fan blade 124 where the first electromagnet 150 is located rotates 180°. At this time, the second electromagnet 151 corresponds to the position of the first magnet 140. At this time, the circuit board 113 controls the first electromagnet 150 to be de-energized and simultaneously controls the second electromagnet 151 to be energized. When the second electromagnet 151 is energized, it exhibits a magnetic N pole. Under the repulsive action of the like poles of the first magnet 140, the second electromagnet 151 continues to rotate 180°. The above control is repeated, thereby achieving the purpose of alternating energization of the first electromagnet 150 and the second electromagnet 151 to make the fan 122 rotate continuously. In this way, it is not necessary to set up an additional motor to control the fan 122, which helps to reduce the energy consumption of the fan 122.

[0045] Figure 4 This is a schematic diagram of the second embodiment of the optical module of this application, as shown below. Figure 4 As shown, Figure 4 The illustrated embodiment is based on Figure 1 In addition to the improvement, the cooling device 120 also includes a lower air guide 130. The lower air guide 130 is connected to the side of the lamp panel 110 away from the upper air guide 121, and the position of the lower air guide 130 corresponds to the position of the through hole 112. The lower air guide 130 is used to guide the air at the bottom of the lamp panel 110 into the through hole 112.

[0046] The difference between this embodiment and the previous embodiment is that in this embodiment, a lower air guide 130 is also provided on the side of the lamp panel 110 away from the upper air guide 121. The lower air guide 130 guides the air below the lamp panel 110 into the through hole 112, increasing the airflow in the through hole 112, thereby improving the airflow through the through hole 112, so that the cold air can reach the vicinity of the fan 122 more quickly, further enhancing the airflow and heat dissipation efficiency.

[0047] Furthermore, through the coordinated operation of the upper air guide 121 and the lower air guide 130, not only can the cold air below the lamp panel 110 be introduced to the upper part of the lamp panel 110, but the cold air can also be guided to the light-emitting unit 111, forming a smooth heat dissipation path, which helps the air circulation in the upper and lower areas of the lamp panel 110.

[0048] Furthermore, the projected area of ​​the lower air guide 130 on the lamp panel 110 is larger than that of the upper air guide 121 on the lamp panel 110. Because the lower air guide 130 has a larger area, it can cover a larger area below the lamp panel 110, thereby guiding more cool air to the bottom of the lamp panel 110. This allows more cool air to be guided through the lower air guide 130 into the through hole 112, and then into the upper air guide 121, from where it is guided to the light-emitting unit 111, thus helping to improve the heat dissipation efficiency of the light-emitting unit 111.

[0049] Furthermore, both the upper air guide 121 and the lower air guide 130 are arc-shaped, with the arc-shaped edge of the upper air guide 121 extending toward the light-emitting unit 111, and the arc-shaped edge of the lower air guide 130 extending away from the lamp panel 110.

[0050] The arc-shaped edge of the upper air guide 121 extends toward the light-emitting unit 111, which can more effectively introduce cold air into the vicinity of the light-emitting unit 111, so that the heat of the light-emitting unit 111 can be quickly carried away and enter the external environment from the air outlet 162.

[0051] The arc-shaped edge of the lower air guide 130 extends away from the lamp panel 110, making the airflow smoother when passing through the lower air guide 130, reducing turbulence and resistance, and guiding the airflow more evenly and stably into the through hole 112, thereby helping the cold air to circulate in the through hole 112 and improving the heat dissipation efficiency.

[0052] In this embodiment, through the coordinated operation of the upper air guide 121 and the lower air guide 130, the upper air guide 121 introduces cold air and the lower air guide 130 exhausts hot air, forming a complete airflow circulation system, which makes the exchange between cold air and hot air more efficient and further improves the heat dissipation effect.

[0053] Figure 5 This is a schematic diagram of the third embodiment of the optical module of this application, as shown below. Figure 5 As shown, each fan blade support 123 is also equipped with a temperature detection device 190, which is connected to the circuit board 113. When the temperature detection device 190 detects that the temperature of the adjacent light-emitting unit 111 is lower than the first preset temperature, the temperature detection device 190 transmits the detection signal to the circuit board 113, and the circuit board 113 controls the fan 122 at the corresponding position to stop rotating. When the temperature detection device 190 detects that the temperature of the adjacent light-emitting unit 111 reaches or exceeds the first preset temperature, the temperature detection device 190 transmits the detection signal to the circuit board 113, and the circuit board 113 controls the fan 122 at the corresponding position to rotate.

[0054] The difference between this embodiment and the previous embodiment is that in this embodiment, a temperature detection device 190 is also provided on each fan blade support 123. The temperature detection device 190 can be a temperature sensor. The temperature detection device 190 monitors the temperature change of the light-emitting unit 111 in real time and transmits the detection signal to the circuit board 113. After processing the acquired detection signal, the circuit board 113 controls the cooling device 120 to turn on or off, avoiding unnecessary operation of the fan 122, thereby saving energy.

[0055] The first preset temperature can be set according to user needs. When the light-emitting unit 111 starts working, its temperature will gradually increase. When the temperature detection device 190 detects that the temperature of a certain light-emitting unit 111 reaches or exceeds the first preset temperature, the temperature detection device 190 transmits the detection signal to the circuit board 113. After the control chip on the circuit board 113 receives the detection signal, it processes it into a control signal to control the fan 122 of the cooling device 120 at the corresponding position of the light-emitting unit 111 to turn on. The fan 122 cuts the airflow generated by the airflow, thereby targeting the light-emitting unit 111. The airflow is directed through the upper air guide 121 to the corresponding light-emitting unit 111, thereby achieving targeted cooling of a specific light-emitting unit 111. When the temperature detection device 190 detects that the temperature of the light-emitting unit 111 has dropped below the first preset temperature, the temperature detection device 190 transmits the detection signal to the circuit board 113. The control chip on the circuit board 113 receives the detection signal and processes it into a control signal, which controls the fan 122 of the cooling device 120 at the corresponding light-emitting unit 111 to turn off, thereby avoiding unnecessary operation of the fan 122 and saving energy.

[0056] When the temperature detection device 190 detects that the temperature of multiple light-emitting units 111 reaches or exceeds the first preset temperature, the temperature detection device 190 transmits the detection signal to the circuit board 113. The control chip on the circuit board 113 receives the detection signal and processes it into a control signal, which simultaneously controls the fans 122 of multiple cooling devices 120 corresponding to the positions of multiple light-emitting units 111 to turn on. The airflow generated by the fans 122 cutting the air is then directed through the upper air guide 121 to the corresponding position of the light-emitting unit 111, thereby quickly carrying the heat generated by the multiple light-emitting units 111 into the surrounding environment, effectively reducing the temperature of the multiple light-emitting units 111, which is beneficial for local cooling of the lamp board 110. When the temperature detection device 190 near each light-emitting unit 111 detects that the temperature of its corresponding light-emitting unit 111 is lower than the first preset temperature, the temperature detection device 190 near each light-emitting unit 111 transmits its detection signal to the circuit board 113. The circuit board 113 then controls the fans 122 of the cooling devices 120 at the corresponding positions of the light-emitting units 111 to turn off, thereby effectively saving energy.

[0057] Figure 6 This is a schematic diagram of an embodiment of the display device of this application, as shown below. Figure 6 As shown in the figure, this application discloses a display device 10, including a rear shell 200. The display device 10 also includes the aforementioned optical module 100, which is disposed within the rear shell 200. The rear shell 200 protects the optical module 100 from damage caused by external forces and can, to a certain extent, prevent external moisture and dust from entering the interior of the optical module 100, thus preventing corrosion and other phenomena, effectively extending the service life of the optical module 100.

[0058] The display device 10 of this application is mainly for a display device 10 with a Miniled optical module 100, which can be a monitor, a television or other device. This application does not impose specific restrictions on the type of display device 10.

[0059] Since the display device 10 with miniled optical module 100 has a large number of light-emitting units 111, a lot of heat will be generated when the display device 10 is working. The heat generated by the light-emitting units 111 is not easily dissipated to the surrounding environment, and the heat tends to accumulate near the light-emitting units 111, thereby affecting the service life of the display device 10.

[0060] Based on the above problems, this application improves the optical module 100 in the display device 10 by opening a through hole 112 between two adjacent light-emitting units 111 on the lamp plate 110, thus opening the lamp plate 110 vertically. A portion of the cooling device 120 is placed within the through hole 112. During operation, the light-emitting units 111 generate a large amount of heat in their vicinity. The area above the lamp plate 110 is mainly hot air, while the area below the lamp plate 110 is mainly cold air relative to the area above. The cooling device 120 can directly guide the cold air below the lamp plate 110 to the vicinity of the light-emitting units 111, forming an effective airflow path. The cooling device 120 transfers air from below the lamp panel 110 to the light-emitting unit 111 above the lamp panel 110, thereby accelerating air circulation near the light-emitting unit 111 and carrying heat away from the vicinity of the light-emitting unit 111. Heat can be conducted from the light-emitting unit 111 to the surrounding air more quickly, thus preventing heat accumulation at the location of the light-emitting unit 111. This allows for targeted heat dissipation of the light-emitting unit 111, effectively reducing its temperature, avoiding localized overheating, improving the operational stability of the light-emitting unit 111, and thus extending the lifespan of the optical module 100, thereby effectively extending the lifespan of the display device 10.

[0061] It should be noted that the inventive concept of this application can form many embodiments, but due to the limited space of the application documents, they cannot all be listed. Therefore, without conflict, the embodiments described above or the technical features can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effect will be enhanced.

[0062] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. An optical module, characterized in that, The device includes a lamp panel and a cooling device. The lamp panel is provided with a plurality of light-emitting units arranged in an array. The lamp panel is provided with a plurality of through holes, each of which is located between two adjacent light-emitting units. The cooling device is partially located inside the through holes. The cooling device is used to conduct air from below the lamp panel to the light-emitting unit above the lamp panel; The optical module includes a back plate and multiple optical films. The back plate includes opposing side plates. The lamp plate is connected to the opposing side plates. The multiple optical films are disposed above the lamp plate and connected to the top of the side plates. The lamp plate divides the cavity enclosed by the back plate into a first receiving cavity and a second receiving cavity. The first receiving cavity is located below the lamp plate, and the second receiving cavity is located above the lamp plate. The side plate is provided with an air inlet corresponding to the position of the first receiving cavity, and the side plate is provided with an air outlet corresponding to the position of the second receiving cavity; The cooling device includes an upper air guide and a fan, with the upper air guide positioned above the through hole corresponding to the position of the light-emitting unit. The fan is electrically connected to the circuit board. The fan includes a fan blade support and multiple fan blades. A support layer is provided on the side of the optical film layer near the lamp board. The support layer is made of a light-transmitting material. The upper air guide is connected to the support layer. One end of the fan blade support passes through the upper air guide and is rotatably connected to the support layer. The other end extends into the through hole and is connected to a plurality of fan blades, which are located within the through hole.

2. The optical module as described in claim 1, characterized in that, A circuit board is provided at the bottom of the lamp panel. The circuit board is electrically connected to the cooling device, and the circuit board controls the cooling device to conduct the air below the lamp panel to the light-emitting unit above the lamp panel.

3. The optical module as described in claim 2, characterized in that, A first magnet and a second magnet are respectively provided on both sides of the lamp panel where the fan is located. The first magnet and the second magnet have opposite magnetic properties. A first electromagnet and a second electromagnet are provided in the multiple fan blades. The first electromagnet and the second electromagnet are arranged opposite each other on the horizontal axis. The first electromagnet and the second electromagnet have the same magnetic properties. The first electromagnet and the second electromagnet are electrically connected to the circuit board, and the circuit board alternately supplies power to the first electromagnet and the second electromagnet.

4. The optical module as described in claim 3, characterized in that, The cooling device also includes a lower air guide, which is connected to the side of the lamp panel away from the upper air guide and the position of the lower air guide corresponds to the position of the through hole. The lower air guide is used to guide the air at the bottom of the lamp panel into the through hole.

5. The optical module as described in claim 4, characterized in that, The projected area of ​​the lower air guide on the lamp panel is larger than the projected area of ​​the upper air guide on the lamp panel.

6. The optical module as described in claim 5, characterized in that, Both the upper and lower air guides are arc-shaped, with the arc-shaped edge of the upper air guide extending toward the light-emitting unit and the arc-shaped edge of the lower air guide extending away from the lamp panel.

7. The optical module as described in claim 6, characterized in that, Each of the fan blade support pillars is also equipped with a temperature detection device, which is connected to the circuit board. When the temperature detection device detects that the temperature of the adjacent light-emitting unit is lower than a first preset temperature, the temperature detection device transmits the detection signal to the circuit board, and the circuit board controls the fan at the corresponding position to stop rotating. When the temperature detection device detects that the temperature of the adjacent light-emitting unit reaches or exceeds the first preset temperature, the temperature detection device transmits the detection signal to the circuit board, and the circuit board controls the fan at the corresponding position to rotate.

8. A display device, comprising a rear cover, characterized in that, The display device further includes an optical module as described in any one of claims 1 to 7, the optical module being disposed within the rear housing.

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