Camera low-temperature starting device

Abstract

The utility model discloses a low-temperature starting device for a camera, which is used for solving the problems that the camera is difficult to start under a low-temperature condition and the low-temperature starting technology is high in cost, reducing the power consumption, reducing the occupied space of the low-temperature starting device in a camera shell and being capable of dissipating heat under a high-temperature environment. The low-temperature starting device for the camera is arranged in a shell made of a high-thermal-conductivity material and comprises a supporting plate made of the high-thermal-conductivity material, a heating device and a heat dissipation block made of the high-thermal-conductivity material. The supporting plate is fixed inside the shell, and the heating device and the heat dissipation block are arranged on the supporting plate, located on the same side of the camera chip and respectively conduct solid heat transfer with the camera chip. Wherein the heating device is connected with a power supply. Therefore, in a low-temperature environment, the camera chip cannot be started, the power supply is turned on, and the heating device starts to heat; when the temperature of heat generated during operation of the camera chip is too high, heat is dissipated through the heat dissipation block, the supporting plate and the shell in sequence.

Description

Technical Field

[0001] The utility model relates to the technical field of cameras, in particular to a low-temperature starting device for a camera. Background Art

[0002] With the increasing demand for cameras, consumers' requirements for the diverse working environments applicable to cameras are also increasing. In particular, although some cameras can operate under extreme temperature conditions, the models focusing on starting in low-temperature environments are still insufficient. Therefore, the low-temperature starting of camera chips is an urgent problem to be solved by those skilled in the art. Currently, existing low-temperature starting cameras generally use ultra-low-temperature special chips with high costs, and it is difficult to replace them, and the subsequent maintenance and repair costs are also quite expensive.

[0003] For this reason, the patent with the application number CN201210224195.9 discloses a camera heating system. The heating system includes an overall heating module, a local heating module, a fan, a heating control device, and a temperature sensing device. The temperature sensing device senses the temperature inside the ball camera and reports the temperature T to the heating control device every predetermined time. The heating control device judges the reported temperature T and performs heating control according to the judgment result: when T>T1, control the overall heating module and the local heating module to turn off; when T2<T<T1, control the local heating module to turn on. When T<T2, control the local heating module and the overall heating module to turn on.

[0004] Although this patent aims to achieve the effect of rapid temperature rise by driving the hot air generated by the heating module through the fan to circulate inside the camera, its design has significant limitations. The additional fan increases the power consumption and occupies the space inside the camera housing, with high space requirements.

[0005] Therefore, it is desirable to have a technical solution to overcome or at least mitigate the above-mentioned defects of the prior art. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a low-temperature starting device for a camera to solve the problems of difficult starting of the camera under low-temperature conditions and high costs of low-temperature starting technology in the above-mentioned background art, and to reduce power consumption and the space occupied by the low-temperature starting device in the camera housing.

[0007] To achieve the above purpose, the utility model provides a low-temperature starting device for a camera, which is installed inside the housing, and is characterized by including

[0008] a support plate, a heating device, and a heat dissipation block;

[0009] The support plate is fixed inside the housing;

[0010] The heating device and the heat sink are arranged on the support plate and on the same side of the camera chip, and respectively conduct solid heat transfer with the camera chip.

[0011] Wherein, the heating device is connected to a power source and transfers heat to the camera chip at low temperatures; the camera chip dissipates heat through the heat sink.

[0012] Thus, in a low-temperature environment, when the camera chip cannot be started and the power is turned on, the heating device starts to heat; when the heat generated during the operation of the camera chip is too high, heat is dissipated through the heat sink, the support plate, and the housing in sequence. Since the thermal conductivity of solids is stronger than that of gases, the heat transfer efficiency between the camera chip and the heating device and the heat sink is higher through solids.

[0013] Furthermore, there is a gap between the side wall of the heating device and the heat sink, and the materials of the housing, the support plate, and the heat sink are all high-thermal-conductivity materials.

[0014] Thus, the heat transfer between the heating device and the heat sink is reduced, and the heating efficiency of the heating device and the heat dissipation efficiency of the heat sink are improved.

[0015] Furthermore, the camera low-temperature startup device further includes

[0016] A first heat-conducting sheet;

[0017] The first heat-conducting sheet is located between the camera chip and the heat sink and the heating device, and is in contact with them.

[0018] Thus, the first heat-conducting sheet fills the gaps between the camera chip and the heat sink and the heating device, strengthens the heat transfer effect, and is conducive to heat dissipation and heating; and by moving the camera chip, the vertical projection areas of the camera chip on the heat sink and the heating device are changed, that is, the heat dissipation and heating areas are divided, achieving the optimization of thermal management.

[0019] Furthermore, the heating device includes a heating sheet pressing plate, a second heat-conducting sheet, a heating device, and a heat insulation plate that are sequentially in contact; the heating device is connected to a power source; the heat insulation plate is in contact with the support plate; the material of the heating sheet pressing plate is a high-thermal-conductivity material, and the material of the heat insulation plate is a low-thermal-conductivity material.

[0020] Furthermore, the heating sheet pressing plate is provided with a heating groove, and the second heat-conducting sheet and the heating device are embedded in the heating groove.

[0021] Thus, the heating device can be positioned at an appropriate position on the heating sheet pressing plate.

[0022] Further, at least two screw holes are respectively provided on the support plate, the heat insulation plate and the heating sheet pressing plate, and the screw holes at corresponding positions are coaxial. Bolts pass through the screw holes to fix the heating device on the support plate.

[0023] Thus, the heating device is fixed on the support plate.

[0024] Further, the plane of the heat dissipation block facing the camera chip is coplanar with the plane of the heating device facing the camera chip.

[0025] Further, the camera low-temperature startup device further includes

[0026] a heating groove provided on the support plate;

[0027] The heating device is fixedly arranged in the heating groove; only the heat insulation plate of the heating device contacts the bottom surface of the heating groove; there is a gap between the side surface of the heating device and the side wall of the heating groove.

[0028] Thus, the heating device is positioned through the heating groove, and the volume of the entire camera low-temperature startup device is reduced; the gap between the side surface of the heating device and the side wall of the heating groove can reduce heat transfer and slow down the heat dissipation of the heating device through the support plate.

[0029] Further, the camera low-temperature startup device further includes

[0030] a PCB board, the other side of the camera chip is attached to the PCB board; the PCB board is connected to the support plate 2 at at least two places.

[0031] Thus, the PCB board is fixed on the support plate, the camera chip presses the first heat conducting sheet 4, and the heat transfer between the heating device and the camera chip is accelerated.

[0032] Further, a temperature sensor is provided inside the camera chip. After the internal temperature reaches the target value, the temperature sensor outputs a signal to cut off the power supply, and the heating device stops working.

[0033] Thus, when the heat generated by the operation of the camera chip causes the temperature to be too high and exceed the target value set by the temperature sensor, the temperature sensor sends a signal to cut off the power supply, and the heating device stops working. The heat of the camera chip is sequentially transferred to the external environment through the heat dissipation block, the support plate, and the housing, achieving the purpose of heat dissipation and temperature reduction.

[0034] Compared with the prior art, the present utility model has the following beneficial effects:

[0035] 1. This application takes into account both the low-temperature startup and high-temperature heat dissipation functions, ensuring that the camera chip can operate normally in low-temperature or high-temperature environments.

[0036] 2. This application helps the camera chip to start in a low-temperature environment with a smaller volume.

[0037] Under the premise of realizing the function that the camera chip can start in a low-temperature environment, this application uses devices with lower costs. Description of the Drawings

[0038] Figure 1 Overall structure diagram of the camera low-temperature start-up device and the housing.

[0039] Figure 2 For Figure 1 Partial enlarged view of the camera low-temperature start-up device in

[0040] Figure 3 Exploded view of the camera low-temperature start-up device.

[0041] Figure 4 Overall structure diagram of the camera low-temperature start-up device.

[0042] Figure 5 Assembly diagram of the heating device and the support plate.

[0043] Figure 6 Partial enlarged view of the camera low-temperature start-up device.

[0044] Figure 7 Structure diagram of the heating device.

[0045] In the figure: 1 housing, 2 support plate, 2-1 heat sink, 2-2 heating groove, 3-1 PCB board, 3-2 camera chip, 4 first heat conducting sheet, 5 heating device, 5-1 heating sheet pressing plate, 5-2 second heat conducting sheet, 5-3 heating device component, 5-4 heat insulation plate. Detailed Description of the Preferred Embodiment

[0046] In order to better understand the purpose, structure and function of the present invention, the following further describes in detail a camera low-temperature start-up device of the present invention with reference to Figures 1-7. In the drawings, the same or similar reference numerals are used to represent the same or similar structures or elements with the same or similar functions. The following describes the embodiments of the present invention in detail with reference to the drawings.

[0047] Embodiment 1

[0048] As Figure 1-4As shown in the figure, a low-temperature startup device for a camera is designed and installed inside the housing 1, which includes a support plate 2, a heating device 5, a heat dissipation block 2-1, a first heat conduction sheet 4, and a PCB board 3-1. The housing 1, the support plate 2, and the heat dissipation block 2-1 are all made of metal materials. The support plate 2 is fixed inside the housing 1. The heating device 5 and the heat dissipation block 2-1 are arranged on the support plate 2 and on the same side of the camera chip. The first heat conduction sheet 4 is located between the camera chip and the heat dissipation block 2-2 and the heating device 5 and is in contact with them, so as to reduce the gap between the camera chip and the heat dissipation block 2-2 and the heating device 5 and accelerate heat transfer. There is a gap between the heating device 5 and the heat dissipation block 2-1 to reduce heat transfer between the two. At low temperatures, the heating device 5 transfers heat to the camera chip; at high temperatures, the camera chip dissipates heat through the heat dissipation block 2-1.

[0049] The heating device 5 includes a heating sheet pressing plate 5-1, a second heat conduction sheet 5-2, a heating device 5-3, and a heat insulation plate 5-4 that are sequentially attached. The heating device 5-3 is connected to the power supply, and the heat insulation plate 5-4 is attached to the support plate 2. There are 2 screw holes on the heating sheet pressing plate 5-1, the heat insulation plate 5-4, and the support plate 2, and the screw holes at corresponding positions are coaxial. Bolts pass through the screw holes to fix the heating device 5 on the support plate 2. The heating sheet pressing plate 5-1 is made of metal material, and the heat insulation plate 5-4 is made of plastic material. The other side of the camera chip is attached to the PCB board 3-1; the PCB board 3-1 and the support plate 2 are connected at 6 places respectively.

[0050] Embodiment 2

[0051] As shown in Figures 5-7, on the basis of Embodiment 1, the design is further optimized. The plane of the heat dissipation block 2-1 facing the camera chip and the plane of the heating device 5 facing the camera chip are coplanar. The heating sheet pressing plate 5-1 is provided with a heating groove, and the second heat conduction sheet 5-2 and the heating device 5-3 are embedded in the concave heating groove. The support plate 2 is provided with a heating groove 2-2, and the heating device 5 is arranged in the heating groove 2-2. Only the heat insulation plate 5-4 of the heating device 5 contacts the bottom surface of the heating groove 2-2. There is a gap between the side surface of the heating device 5 and the side wall of the heating groove 2-2. A temperature sensor is provided inside the camera chip. After the internal temperature reaches the target value, the temperature sensor outputs a signal to disconnect the power supply, and the heating device 5-3 stops working.

[0052] It can be understood that the present utility model is described by means of some embodiments. Those skilled in the art will be aware that, without departing from the spirit and scope of the present utility model, various changes or equivalent substitutions can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the present utility model.

Claims

1. A camera low-temperature starting device, installed inside the housing (1), characterized in that, including a support plate (2), a heating device (5) and a heat sink (2-1); the support plate (2) is fixed inside the housing (1); the heating device (5) and the heat sink (2-1) are arranged on the support plate (2) and on the same side of the camera chip (3-2), and respectively conduct solid heat transfer with the camera chip (3-2); wherein, the heating device (5) is connected to a power supply and transfers heat to the camera chip (3-2) at low temperatures; the camera chip (3-2) dissipates heat through the heat sink (2-1).

2. The low-temperature starting device for a camera according to claim 1, wherein, There is a gap between the side wall of the heating device (5) and the heat sink (2-1); the materials of the housing (1), the support plate (2) and the heat sink (2-1) are all high thermal conductivity materials.

3. The low-temperature starting device for a camera according to claim 1, characterized in that, It also includes a first heat conducting sheet (4); the first heat conducting sheet (4) is located between the camera chip (3-2) and the heat sink (2-1), the heating device (5), and is in contact with them.

4. A camera low-temperature startup device according to any one of claims 1-3, characterized in that, The heating device (5) includes a heating sheet pressing plate (5-1), a second heat conducting sheet (5-2), a heating device (5-3) and a heat insulating plate (5-4) that are sequentially attached. The heating device (5-3) is connected to a power supply, and the heat insulating plate (5-4) is attached to the support plate (2); the material of the heating sheet pressing plate (5-1) is a high thermal conductivity material, and the material of the heat insulating plate (5-4) is a low thermal conductivity material.

5. The low-temperature starting device for a camera according to claim 4, characterized in that, The heating sheet pressing plate (5-1) is provided with a heating groove, and the second heat conducting sheet (5-2) and the heating device (5-3) are embedded in the heating groove.

6. The low-temperature starting device for a camera according to claim 5, wherein, At least two screw holes are respectively provided on the support plate (2), the heat insulating plate (5-4) and the heating sheet pressing plate (5-1), and the screw holes at corresponding positions are coaxial. Bolts pass through the screw holes to fix the heating device (5) on the support plate (2).

7. The low-temperature starting device for a camera according to claim 6, characterized in that, The planes of the heat sink (2-1) and the heating device (5) facing the camera chip are coplanar.

8. The low-temperature starting device for a camera according to claim 7, characterized in that , a heating groove (2-2) is provided on the support plate (2); the heating device (5) is arranged in the heating groove (2-2); only the heat insulating plate (5-4) of the heating device (5) contacts the bottom surface of the heating groove (2-2); there is a gap between the side surface of the heating device (5) and the side wall of the heating groove (2-2).

9. The low-temperature starting device for a camera according to claim 8, characterized in that, It also includes a PCB board (3-1); the other side of the camera chip (3-2) is attached to the PCB board (3-1); the PCB board (3-1) is connected to the support plate (2) at at least two places.

10. The camera low-temperature startup device according to claim 1, characterized in that, A temperature sensor is provided inside the camera chip (3-2). After the temperature of the camera chip (3-2) reaches the target value, the temperature sensor outputs a signal to disconnect the power supply, and the heating device (5-3) stops working.

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