LED lamp plate for automobile interactive screen and automobile interactive screen

Abstract

The utility model relates to the technical field of automobile interaction screen, especially a kind of LED lamp panel for automobile interaction screen and automobile interaction screen. LED lamp panel, it includes: flexible FPC, and multiple groups of LED chips are welded on flexible FPC, and each group of LED chips includes at least one LED chip;Flexible FPC is bonded with the annular frame corresponding to each group of LED chips, and each group of LED chips is located inside corresponding annular frame, white glue is sprayed between each group of LED chips and annular frame and forms white glue layer, and transparent glue layer or fluorescent glue layer is sprayed on the top of white glue layer and LED chip;The lower portion of the flexible FPC is connected with a heat dissipation unit.The utility model uses flexible FPC with shaped lamp bead, avoids using car standard lamp bead, can effectively reduce cost, and simultaneously uses heat dissipation unit, can assist effectively improve the LED light emitting power on flexible FPC, reduce automobile exchange screen cost and improve luminous intensity.

Description

Technical Field

[0001] This utility model relates to the field of automotive interactive screen technology, and in particular to an LED light board for automotive interactive screens and an automotive interactive screen. Background Technology

[0002] Traditional automotive interactive screens typically include an LED backlight panel with automotive-grade LEDs that offer high power and excellent heat dissipation. However, because the LEDs are individually molded, a heat dissipation structure needs to be designed, resulting in relatively high costs. With increasing competition in the automotive industry, cost reduction has become essential, necessitating the design of a lower-cost LED backlight panel. Summary of the Invention

[0003] One objective of this invention is to address the shortcomings of existing technologies by providing an LED light board for automotive interactive screens, which has a relatively simple structure and relatively low cost.

[0004] Another objective of this utility model is to provide an automotive interactive screen having the aforementioned LED light panel.

[0005] An LED light board for automotive interactive screens includes: a flexible FPC, on which multiple groups of LED chips are soldered, each group of LED chips including at least one LED chip; a ring frame corresponding to each group of LED chips is bonded to the flexible FPC, each group of LED chips is located inside the corresponding ring frame, white glue is sprayed between each group of LED chips and the ring frame to form a white glue layer, and a transparent glue layer or a fluorescent glue layer is sprayed on top of the white glue layer and the LED chips; a heat dissipation unit is connected to the bottom of the flexible FPC.

[0006] Preferably, each group of LED chips includes 3 LED chips; the 3 LED chips are arranged in parallel or in a triangular arrangement.

[0007] Furthermore, the heat dissipation unit includes a heat sink block disposed below the flexible FPC, and a thermally conductive insulating layer is provided between the flexible FPC and the heat sink block.

[0008] Furthermore, the LED chip is connected to a thermocouple wire and is electrically connected to the flexible FPC through the thermocouple wire. At least one side of the flexible FPC is provided with a driving circuit board, which is electrically connected to the flexible FPC.

[0009] Furthermore, the heat dissipation unit also includes a cooling pipe or cooling tank disposed within the heat sink.

[0010] Furthermore, a black rubber layer is bonded to the top of the flexible FPC, and the black rubber layer is located around the annular frame.

[0011] An automotive interactive screen includes the aforementioned LED light panel.

[0012] Preferably, it also includes a water cooling system, which is connected to the cooling pipes.

[0013] Furthermore, it also includes a control center, which is electrically connected to the water cooling system and drive circuit board.

[0014] The beneficial effects of this utility model are as follows: This utility model uses a flexible FPC with molded LED beads, avoiding the use of automotive-grade LED beads, which can effectively reduce costs. At the same time, the use of a heat dissipation unit can help to effectively improve the LED luminous power on the flexible FPC, reduce the cost of automotive switching screens, and improve luminous intensity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one structure of the LED light board in this embodiment.

[0016] Figure 2 for Figure 1 An enlarged schematic diagram of point A in the middle.

[0017] Figure 3 This is a partial cross-sectional view of the LED light board in this embodiment.

[0018] Figure label: 1—Driver circuit board; 2—Black rubber layer; 3—Ring frame; 4—LED chip; 5—Transparent adhesive layer; 6—White adhesive layer; 7—Cooling pipe; 8—Heat sink block; 9—Thermocouple wire; 10—Thermal conductive insulating layer; 11—Flexible FPC. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings. Figures 1 to 3 As shown.

[0020] Example: See Figures 1 to 3 An LED light board for automotive interactive screens includes: a flexible FPC 11, on which multiple groups of LED chips 4 are soldered, each group of LED chips 4 including at least one LED chip 4; a ring frame 3 corresponding to each group of LED chips 4 is bonded to the flexible FPC 11, each group of LED chips 4 is located inside the corresponding ring frame 3, white glue is sprayed between each group of LED chips 4 and the ring frame 3 to form a white glue layer 6, and a transparent glue layer 5 or a fluorescent glue layer is sprayed on top of the white glue layer 6 and the LED chips 4; a heat dissipation unit is connected to the bottom of the flexible FPC 11.

[0021] This embodiment employs direct soldering of LED chips 4 onto the flexible FPC 11, directly forming the LED beads. This structure reduces the need for transferring the LED chips 4 after external forming. Furthermore, this embodiment uses a unified heat dissipation unit to cool the flexible FPC 11, thus avoiding the need for heat dissipation structures within each automotive-grade LED bead. By transferring heat dissipation to the flexible FPC 11, costs are effectively reduced. The ring frame 3 is white and used to reflect light, improving light extraction efficiency.

[0022] Flexible FPC11 refers to: Flexible Printed Circuit, abbreviated as FPC.

[0023] Preferably, each group of LED chips 4 includes 3 LED chips 4; the 3 LED chips 4 are arranged in parallel or in a triangular arrangement.

[0024] Using more than one LED chip 4 in each group of LED chips 4 can increase the luminous power of each group of LED chips 4 after forming lamp beads, thereby improving the luminous power of the entire LED light board; secondly, using three LED chips 4 can form the required light color by combining three different light-emitting chips through light color combination, thereby increasing the effect.

[0025] See Figure 3 The heat dissipation unit includes a heat sink block 8 disposed below the flexible FPC 11, and a thermally conductive insulating layer 10 is provided between the flexible FPC 11 and the heat sink block 8.

[0026] A heat sink 8 is provided for rapid heat dissipation. Since the heat sink 8 is typically made of metal, a thermally conductive insulating layer 10 is placed between the flexible FPC 11 and the heat sink 8 to prevent short circuits in the flexible PFC. This allows heat from the FPC to flow quickly to the heat sink 8 and dissipate. The heat sink 8 can be made of metal, non-metal, or semiconductor materials, such as ceramic plates or silicone grease, and possesses high thermal conductivity and insulation properties.

[0027] See Figure 3 The LED chip 4 is connected to a thermocouple wire 9 and is electrically connected to the flexible FPC 11 through the thermocouple wire 9. At least one of the two sides of the flexible FPC 11 is provided with a driving circuit board 1, which is electrically connected to the flexible FPC 11.

[0028] The driver circuit board 1 is equipped with a driving circuit for driving the LED chip 4 on the flexible PFC. This driving circuit can be existing technology, such as the driving circuit currently used in automotive interactive screens. A thermocouple wire 9 is installed on the LED chip 4 to detect the temperature of the LED chip 4 and transmit the temperature signal to the driver circuit board 1 through the flexible PFC 11. The driver circuit board 1 adjusts the operating power of the LED chip 4 appropriately according to the temperature to avoid overheating.

[0029] See Figure 3 The heat dissipation unit also includes a cooling pipe 7 or a cooling tank disposed in the heat sink.

[0030] In specific configurations, the cooling pipe 7 or cooling tank can be connected to a cooling system or directly to a coolant source, such as water, which flows through the heat sink carrying heat. The cooling system can be existing technology, such as a water tank that pumps water into the cooling pipe 7 and then back into the tank; this is existing technology. Alternatively, the heat dissipation unit can include heat dissipation fins mounted on the heat sink to increase the heat dissipation area and improve efficiency. When configuring the cooling pipe 7, an installation groove is provided inside the heat sink; this groove can be serpentine or other shapes; this is existing technology and will not be elaborated further. The heat dissipation unit can be made of materials such as copper, aluminum, or ceramic, which are good conductors of heat.

[0031] See Figure 1 , Figure 3 A black rubber layer 2 is bonded to the top of the flexible FPC11, and the black rubber layer 2 is located around the annular frame 3.

[0032] The black rubber layer 2 is used to fill the area between adjacent ring frames 3, which can help fix the ring frames 3.

[0033] Preferably, the ring frame 3 is square in shape, and adjacent ring frames 3 are connected by connecting pieces (not shown in the figure).

[0034] The ring frame 3 is connected by connecting pieces, so that the entire ring frame 3 is connected as a whole, which facilitates installation and avoids installing them one by one.

[0035] Example 2: A car exchange screen, including the above-mentioned LED light panel.

[0036] Preferably, it also includes a water cooling system, which is connected to the cooling pipe 7 (shown in the figure).

[0037] A small water-cooling system can be installed inside the car's interactive screen. The water-cooling system can be based on existing technology, such as the water-cooling system on existing PCs.

[0038] Furthermore, it also includes a control center, which is electrically connected to the water cooling system and drive circuit board 1 (not shown in the figure).

[0039] The control center can be a processor (CPU), microcontroller, IC, etc.; it obtains the temperature information of LED chip 4 through driver circuit board 1, adjusts the water flow rate of the water cooling system, and controls the operating power of driver circuit board 1 to drive LED chip 4; this can effectively improve the luminous power of the LED light board. These controls can be based on existing technologies; for example, a set of parameters such as water flow rate, temperature, and luminous power can be obtained through testing, and the water flow rate and luminous power can be adjusted according to the parameter set to ensure that the LED light board operates within a relatively safe working range.

[0040] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. An LED light panel for automotive interactive screens, characterized in that: It includes: A flexible FPC is provided, on which multiple groups of LED chips are soldered, each group of LED chips including at least one LED chip; a ring frame corresponding to each group of LED chips is bonded to the flexible FPC, each group of LED chips is located inside the corresponding ring frame, white glue is sprayed between each group of LED chips and the ring frame to form a white glue layer, and a transparent glue layer or fluorescent glue layer is sprayed on top of the white glue layer and the LED chips; a heat dissipation unit is connected to the bottom of the flexible FPC.

2. The LED light panel for automotive interactive screens according to claim 1, characterized in that: Each group of LED chips includes 3 LED chips; these 3 LED chips are arranged in parallel or in a triangle.

3. The LED light panel for automotive interactive screens according to claim 1, characterized in that: The heat dissipation unit includes a heat sink block disposed below the flexible FPC, and a thermally conductive insulating layer is provided between the flexible FPC and the heat sink block.

4. The LED light panel for automotive interactive screens according to claim 1, characterized in that: The LED chip is connected to a thermocouple wire and is electrically connected to the flexible FPC through the thermocouple wire. At least one of the two sides of the flexible FPC is provided with a driving circuit board, which is electrically connected to the flexible FPC.

5. The LED light panel for automotive interactive screens according to claim 1, characterized in that: The heat dissipation unit also includes cooling pipes or cooling tanks disposed within the heat sink.

6. The LED light panel for automotive interactive screens according to claim 1, characterized in that: A black rubber layer is bonded to the top of the flexible FPC, and the black rubber layer is located around the ring frame.

7. The LED light panel for automotive interactive screens according to claim 1, characterized in that: The ring frame is square in shape, and connecting plates connect adjacent ring frames.

8. A car interactive screen, characterized in that: Includes the LED light panel as described in any one of claims 1 to 7.

9. The automotive interactive screen according to claim 8, characterized in that: It also includes a water cooling system, which is connected to cooling pipes.

10. The automotive interactive screen according to claim 9, characterized in that: It also includes a control center, which is electrically connected to the water cooling system and drive circuit boards.

Images