CN209938482U

CN209938482U - Self-heating camera support based on conductive plastic

Info

Publication number: CN209938482U
Application number: CN201920795496.4U
Authority: CN
Inventors: 张万武; 岳猛超
Original assignee: Hebei Keli Automobile Equipment Co Ltd
Current assignee: Hebei Keli Automobile Equipment Co Ltd
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-01-14
Anticipated expiration: 2029-05-29

Abstract

The utility model relates to a self-heating camera support based on conductive plastic belongs to camera erection equipment technical field, including the support body that is used for installing the camera, the key lies in, the support body wrap up in the outside of camera to the opening has been seted up in the shooting direction of camera, the opening in install the lens hood that is located camera below the place ahead, the lens hood include that the material is conductive plastic's conductive heating layer, the extraction electrode of being connected with conductive heating layer and be located the insulating layer in the conductive heating layer outside, conductive heating layer is connected with the power with the help of extraction electrode, the conductive plastic heat dissipation when will drawing electrode switch-on, hot-air rises, eliminates fog, frosting on camera or support body place installation position through the heat radiation, makes the camera keep normally shooing.

Description

Self-heating camera support based on conductive plastic

Technical Field

The utility model belongs to the technical field of camera erection equipment, a camera support is related to, specifically speaking are self-heating camera support based on conductive plastic.

Background

With the rapid development of the automobile industry and the improvement of the living standard of people, automobiles become one of indispensable transportation tools for people to go out, transport goods and the like. The automobile has various situations when running on a road, and various safety auxiliary functions are increasingly integrated for ensuring the personal and property safety of passengers and road surface personnel.

An automobile manufacturer may install a camera (camera) on a front windshield, such as an FEB camera (image capture window of a pre-crash intelligent assistance system), a KAFAS (driver assistance system based on a camera principle), and the like, but when the external environment temperature is low, fog or frost may be generated on the front windshield, resulting in abnormal operation of the camera.

SUMMERY OF THE UTILITY MODEL

For solving the problem that exists among the prior art, the utility model provides a self-heating camera support based on conductive plastic exerts voltage on two extraction electrodes of lens hood, and the lens hood then can generate heat by oneself, through the frost fog on the preceding windshield of thermal radiation elimination, the camera can normally work.

The utility model adopts the technical proposal that:

the utility model provides a self-heating camera support based on conductive plastic, includes the support body that is used for installing the camera, the key lies in, the support body wrap up in the outside of camera to the opening has been seted up in the shooting direction of camera, the opening in install the lens hood that is located camera lower the place ahead, the lens hood include that the material is conductive plastic's the electrically conductive layer that generates heat, with the electrically conductive extraction electrode that generates heat the layer and be located the electrically conductive insulating layer that generates heat the layer outside, the electrically conductive layer that generates heat is connected with the power with the help of extraction electrode.

The conductive heating layer comprises a roundabout section embedded in the light shield body and straight-line sections connected with the end parts of the roundabout section, and the leading-out electrodes are respectively connected with the end parts of the two straight-line sections.

The conductive heating layer is a light shield body, the extraction electrodes are respectively arranged on two sides of the front end of the light shield body, and the insulating layer is positioned on the outer side of the light shield body.

The extraction electrode is conductive silver paste or a metal electrode.

The utility model has the advantages that: the camera is fixed by means of the support body, the opening is formed in the visual field direction of the camera, the camera can shoot conveniently, and the light shield is arranged in the opening and positioned below and in front of the camera, so that interference of surrounding light can be effectively reduced, and the shooting effect is enhanced; the shading cover is provided with a conductive heating layer and is connected with a power supply by virtue of an extraction electrode, the conductive heating layer dissipates heat when the power supply is switched on, and fog and frost on the camera and the front windshield are eliminated by thermal radiation, so that the camera can shoot normally and clearly; the conductive heating layer is covered with an insulating layer to prevent the circuit from leaking electricity and influencing other electronic elements.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a schematic structural view of the light shield in embodiment 1.

Fig. 4 is a schematic structural view of a light shield in embodiment 5.

Fig. 5 is an enlarged schematic view of a portion B in fig. 4.

In the attached drawing, the camera comprises a camera 1, a camera 2, a support body 3, a notch 4, a light shield 5, a conductive heating layer 51, a circuitous section 52, a straight section 6, a lead-out electrode 7, an insulating layer 8 and a male plug.

Detailed Description

The utility model relates to a self-heating camera support based on conductive plastic, including the support body 2 that is used for installing camera 1, the key is, support body 2 wrap up in camera 1's the outside to seted up opening 3 in camera 1's shooting direction, opening 3 in install the lens hood 4 that is located camera 1 below the place ahead, lens hood 4 include that the material is conductive heating layer 5 of conductive plastic, with conductive leading-out electrode 6 that heating layer 5 is connected and be located the insulating layer 7 in the conductive heating layer 5 outside, conductive heating layer 5 is connected with the power with the help of leading-out electrode 6.

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

Embodiment 1, as shown in fig. 1 to 3, a camera 1 is mounted and fixed on a stand body 2, and a light shield 4 below and in front of the camera 1 is fixedly connected with the stand body 2. The conductive heating layer 5 comprises a roundabout segment 51 embedded in the light shield 4 body and two straight-line segments 52 connected with two ends of the roundabout segment 51, specifically, the roundabout segment 51 is uniformly arranged along the light shield 4 body from top to bottom, the two straight-line segments 52 are respectively connected with two ends of the roundabout segment 51, and the upper end parallel and level of the two straight-line segments 52 are arranged and respectively connected with the extraction electrode 6. In fig. 3, the back of the light shield 4 faces upward, the extraction electrodes 6 are respectively connected with the ends of the two straight line segments 52, and the conductive heating layer 5 is uniformly arranged on the light shield 4 to provide a larger heat dissipation area. The left and right sides of lens hood 4 is provided with public inserting 8 respectively, is provided with on the support body 2 to insert with public female inserting that 8 are supporting, inserts the installation that the cooperation can realize lens hood 4 with the public inserting 8 of lens hood 4 and the female on the support body 2 of inserting during the installation, simple structure, simple to operate, the change of the lens hood 4 of being convenient for simultaneously.

The extraction electrode 6 is conductive silver paste coated and printed on the end of the straight line section 52 or a metal electrode pre-buried on the end of the straight line section 52 and is used for connecting the conductive heating layer 5 with a power supply. The insulating layer 7 is applied on the outside of the conductive plastic layer 5.

According to the radian of the front windshield of the automobile, the mounting surface of the bracket body 2 is molded, the bracket body 2 is mounted on the front windshield of the automobile, after the leading-out electrode 6 is connected with a power supply, the conductive heating layer 5 conducts electricity and generates heat, the heat energy reaches the glass and the camera through heat radiation, the mirror surfaces of the front windshield and the camera are effectively heated, and fog and frosting are eliminated.

The material formula of the conductive plastic comprises, by mass, 87% of PBT, 10% of GB or GF, and 3% of graphene.

The preparation method of the conductive heating layer 5 comprises the following steps:

step A: adding GB or GF and graphene into a stainless steel container, adding water, and stirring to ensure that the graphene is fully attached to the surface of GB (GF);

and B: drying the moisture, and drying the mixture in an oven at the temperature of 110-150 ℃ for 2 hours to obtain a GB (GF) and graphene blend;

and C: and C, slicing the PBT, simply and mechanically stirring and blending the sliced PBT and the blend obtained in the step B, blending and extruding the mixture at the temperature of 300 ℃ by using a double-screw extruder, cooling and then slicing the mixture by using a slicing machine to obtain the conductive master batch of the PBT, the GB (GF) and the graphene.

And D, during manufacturing, the body of the light shield 4 is made of common plastics, and the conductive master batches obtained in the step C and the common plastics are subjected to double-material injection molding to prepare the light shield 4.

Embodiment 2 is substantially the same as embodiment 1, except that the formula of the conductive plastic comprises, by mass, 60% of PBT, 30% of GB or GF, 10% of graphene, and the method of blending GB (GF) and graphene is simple mechanical stirring and blending, without performing step a and step B in embodiment 1.

Example 3 is substantially the same as example 1 except that the formulation of the conductive plastic comprises, by mass, 20% of PBT, 20% of GB or GF 45%, 35% of graphene, and GB (GF), and the blending method of graphene is ball milling blending, and step a and step B in example 1 are not performed.

Example 4 is substantially the same as example 1 except that the formula of the conductive plastic comprises, by mass, 29% of PBT, 1% of GB or GF, 70% of graphene, and the method of blending the GB (GF) and the graphene is ball milling.

Example 5 is another implementation of the structure of the light shield 4, as shown in fig. 4-5, wherein the conductive heat generating layer 5 is a body of the light shield 4, that is, the body of the light shield 4 is made of conductive plastic material, the back surface of the light shield 4 in fig. 4 faces upward, the extraction electrodes 6 are respectively disposed on two sides of the front end of the body of the light shield 4, the insulating layer 7 is coated on the outer side of the body of the light shield 4 to cover the light shield 4, thereby preventing the occurrence of electric leakage, the inner side of the light shield 4 is illuminated by the camera, and the coated insulating layer 7 may generate stray light, so the inner side of the light shield 4 is not coated with the insulating layer 7. The body of the light shield 4 is made of conductive plastic, so that the manufacturing process is simple, the heat dissipation area is further increased, and the dissipation of fog and frost is accelerated.

PBT has high heat resistance, toughness, fatigue resistance, self-lubrication, low friction coefficient, weather resistance and water absorption of only 0.1 percent, and still maintains various physical properties and electrical insulation in a humid environment, but has large volume resistance and dielectric loss. It is resistant to hot water, alkalis, acids and oils, but is easily attacked by halogenated hydrocarbons, has poor hydrolysis resistance, can be rapidly crystallized at low temperature, and has good moldability. The disadvantages are low notch impact strength and large molding shrinkage.

The PBT + GB (GF) is modified on the basis of the PBT, not only maintains the original advantages of chemical resistance, processability and the like of the PBT, but also greatly improves the mechanical properties, such as tensile strength and bending strength by 1-1.5 times and elastic modulus by 2 times, overcomes the defect of low notch impact strength of the PBT, greatly improves the heat resistance of the product (the long-term use temperature is 120 ℃, the short-term use temperature reaches 200 ℃), and has excellent creep resistance and fatigue resistance, low molding shrinkage and good dimensional stability.

The utility model discloses on PBT + GB (GF), the addition has excellent electrically conductive, the graphite alkene material of thermal conductivity, thereby make the material both keep PBT + GB (GF) excellent mechanical properties, excellent electrically conductive heating characteristic has again, excellent thermal conductivity, excellent antistatic properties etc., and the material (electrically conductive heating layer) that the preparation gained compare with ordinary plastics, not only can generate heat, good heat dispersion still has, can be in the short time with the heat on the scattered and lost transmission to glass, material itself does not gather unnecessary heat, can fall self temperature to the normal atmospheric temperature in 40-50s after the stop heating, life obtains the extension that is showing.

The prepared material is made into a film, a membrane or a device through injection molding or heating and calendaring, and a certain voltage is applied to the film, the membrane or the device, so that the purpose of heating can be achieved. The prepared material can also be used for defrosting and demisting of parts such as automobile glass, automobile lamps, rearview mirrors and the like, and can also be used for heating automobile seats and the like.

The defrosting test of the bracket comprises the following steps:

test environment temperature: -5 ℃;

initial temperature in the test car: -5 ℃;

initial relative humidity in test car: 60% RH;

defrosting mode	Primary heat transfer mode	Correlation arrangement	Defrosting time
				Water circulation warm air in vehicle	Heat conduction	Internal circulation air, maximum air volume and temperature	About 5min
Bracket heating	Thermal radiation	12V、8W	About 1min

Note that ① needs to wait a long time to reach a high temperature when the car is just started because the heat is supplied by the engine cooling water, ② camera area is in the closed space, the actual warm air can not be blown, and the heat is conducted through the surrounding substances, such as glass.

The performance test of the bracket comprises the following steps:

Claims

1. the utility model provides a self-heating camera support based on conductive plastic, includes support body (2) that are used for installing camera (1), its characterized in that: support body (2) wrap up in the outside of camera (1) to opening (3) have been seted up in the shooting direction of camera (1), opening (3) in install lens hood (4) that are located camera (1) lower the place ahead, lens hood (4) including the material be conductive plastic's electrically conductive generate heat layer (5), with electrically conductive leading-out electrode (6) that generate heat layer (5) and be located electrically conductive insulating layer (7) that generate heat layer (5) outside, electrically conductive layer (5) that generate heat are connected with the help of leading-out electrode (6) and power.

2. The self-heating camera support based on conductive plastic of claim 1, characterized in that: the conductive heating layer (5) comprises a roundabout section (51) embedded in the light shield (4) body and a straight line section (52) connected with the end part of the roundabout section (51), and the lead-out electrodes (6) are respectively connected with the end parts of the two straight line sections (52).

3. The self-heating camera support based on conductive plastic of claim 1, characterized in that: the conductive heating layer (5) is a light shield (4) body, the extraction electrodes (6) are respectively arranged on two sides of the front end of the light shield (4) body, and the insulating layer (7) is positioned on the outer side of the light shield (4) body.

4. The self-heating camera support based on conductive plastic of claim 1, characterized in that: the extraction electrode (6) is conductive silver paste or a metal electrode.