Optical protective glass mounting structure capable of electromagnetic shielding and thermal insulation

Abstract

The utility model discloses an optical protective glass mounting structure capable of electromagnetic shielding and thermal insulation, which relates to the technical field of optical instruments and comprises a mounting base, protective glass, a glass seat and two conductors, the glass seat is mounted on the mounting base, mounting holes are arranged on the glass seat, the protective glass is arranged in the mounting holes, and the two conductors are arranged on the mounting base. A conductive film is arranged on the outer side end face of the protective glass, and the two conductors are arranged on the opposite sides of the inner side end face of the protective glass respectively; the electric conductor transmits current to the conductive film of the protective glass to finally form a loop, the conductive film of the protective glass has resistance, heat is generated on the surface of the protective glass, and the surface of the protective glass is defrosted. As the glass seat is made of the thermal insulation material, the heat dissipation efficiency of the ring side of the protective glass can be reduced, the heat dissipation efficiency of each part of the surface of the protective glass is ensured to be approximately the same, the temperature difference between the center and the edge of the protective glass is reduced, and the smaller the temperature difference is, the lower the protective glass is, the lower the protective glass is.

Description

Technical Field

[0001] The utility model relates to the technical field of optical instruments, and particularly relates to an optical protection glass installation structure with electromagnetic shielding and thermal insulation functions. Background Art

[0002] For vehicle-mounted drivers used in low-temperature environments, it is not only necessary to ensure that the electromagnetic radiation of the electronic components inside the vehicle-mounted driver meets the requirements of users, but also necessary to efficiently and quickly remove the frost or attached ice and snow on the optical glass surface of the visible light channel of the vehicle-mounted driver in a sealed environment and in low-temperature or rain-snow environments, so as not to affect the observation of the target by the users of the vehicle-mounted driver.

[0003] At present, for vehicle-mounted drivers, the visible light detection channels are generally protected by optical protection glass. Since the optical protection glass used is an electrically insulating and brittle material, the vehicle-mounted driver has defects. On the one hand, some optical protection glasses need to have the function of heating to remove ice and snow in low-temperature environments. Since the optical protection glass is a brittle material, when heated, the surface temperature distribution is uneven, which easily causes the glass to crack and malfunction.

[0004] In view of this, there is an urgent need for an optical protection glass installation structure with electromagnetic shielding and thermal insulation functions. Content of the Utility Model

[0005] Aiming at the problems existing in the prior art, the utility model solves these problems with the following technical structure.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] An optical protection glass installation structure with electromagnetic shielding and thermal insulation functions, comprising: a mounting base, a protection glass, a glass seat and two conductors. The glass seat is installed on the mounting base. An installation hole is provided on the glass seat. The protection glass is placed in the installation hole. A conductive film is provided on the outer end face of the protection glass. The two conductors are respectively arranged on the opposite sides of the inner end face of the protection glass, and both of the two conductors are electrically connected to the conductive film;

[0008] The glass seat is made of a thermal insulation material.

[0009] Furthermore,

[0010] A circular step is provided in the installation hole of the glass seat, and the outer end face of the protection glass abuts against the circular step.

[0011] A locking retaining ring is provided inside the glass seat for the protection glass, and the locking retaining ring is threadedly connected to the glass seat.

[0012] An annular mounting base is provided between the inner end face of the locking retaining ring and the protective glass. Both of the two conductors are arranged on the mounting base. A wire groove is provided on the mounting base. First wires are provided on both of the two conductors, and both of the two first wires extend to the outside of the mounting base through the wire groove.

[0013] The glass seat is made of a conductive material, and a conductive gasket is provided between the end face of the glass seat and the mounting base body.

[0014] A ring groove is provided on the annular step, and a conductive sealing rope is arranged in the ring groove.

[0015] A temperature sensor is provided on the mounting base.

[0016] One end of the conductor close to the protective glass is in a sheet shape.

[0017] The mounting base is made of an insulating material.

[0018] The conductor is made of copper or silver.

[0019] Adopting the above structure of the present utility model can achieve the following beneficial effects:

[0020] When the external temperature drops, the air on the outer surface of the protective glass condenses into frost; the power supply energizes the two conductors, and the conductors transmit the current to the conductive film of the protective glass, and finally form a loop. The conductive film of the protective glass has resistance. According to Joule's law, heat can be generated on the surface of the protective glass, and finally the temperature is increased to defrost the surface of the protective glass. Since the glass seat is made of a heat-insulating material, the heat dissipation efficiency on the side of the protective glass can be reduced, ensuring that the heat dissipation efficiency of each part of the surface of the protective glass is roughly the same, maintaining the synchronism of the temperature change on the surface of the protective glass, reducing the temperature difference between the center and the edge of the protective glass. The smaller the temperature difference, the less likely the protective glass is to break. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present application;

[0022] Figure 2 is a schematic structural diagram of another perspective of the present application;

[0023] Figure 3 is a schematic cross-sectional structural diagram of the present application;

[0024] Figure 4 is a schematic structural diagram of the mounting base in the present application;

[0025] Figure 5 is a schematic structural diagram of another perspective of the mounting base in the present application.

[0026] In the figure: 1. Installation base; 2. Protective glass; 21. Conductive film; 3. Glass seat; 4. Conductor; 5. Locking retaining ring; 6. Mounting base; 61. Wire groove; 7. Sealing gasket; 8. Conductive sealing rope; 9. Temperature sensor. Detailed implementation mode

[0027] In order to enable those skilled in the art of the present technology to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above-mentioned accompanying drawings are intended to cover non-exclusive inclusion. For example, a process, method, device, product or equipment including a series of steps or units does not necessarily limit to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or equipment.

[0029] The following is a further detailed description of this application with reference to the attached Figures 1-5 drawings.

[0030] Reference Figures 1-3An optical protection glass mounting structure capable of electromagnetic shielding and thermal insulation is shown, including: a mounting base 1, a protection glass 2, a glass seat 3, and two conductors 4. The glass seat 3 is mounted on the mounting base 1. There is a mounting hole on the glass seat 3. The protection glass 2 is placed in the mounting hole. A conductive film 21 is plated on the outer end face of the protection glass 2, and a heat-conducting electrode, such as a good conductor like copper, aluminum, silver, etc., should be provided on the inner end face. The two conductors 4 are respectively arranged on the opposite sides of the inner end face of the protection glass 2, and both of the two conductors 4 are connected to the heat-conducting electrode inside the conductive film 21; the glass seat 3 should be made of a material that can conduct electricity and insulate heat, such as conductive plastic, foam metal, cermet, etc. Thus, by mounting the protection glass 2 on the glass seat 3 (optimally, the circumferential side of the protection glass 2 is fitted to the inner side of the glass seat 3), when the external temperature drops, the air on the outer surface of the protection glass 2 condenses into frost; the power supply energizes the two conductors 4, the conductors 4 transmit the current to the conductive film 21 of the protection glass 2, and finally form a loop. There is resistance in the conductive film 21 of the protection glass 2. According to Joule's law, heat can be generated on the surface of the protection glass 2, and finally the temperature is increased to defrost the surface of the protection glass. Since the glass seat 3 is made of a heat-insulating material, the heat dissipation efficiency of the circumferential side of the protection glass 2 can be reduced, ensuring that the heat dissipation efficiency of each part of the surface of the protection glass 2 is roughly the same, maintaining the synchronism of the temperature change on the surface of the protection glass 2, and reducing the temperature difference between the center and the edge of the protection glass 2. The smaller the temperature difference, the less likely the protection glass 2 is to break.

[0031] As Figure 3 shown, in order to facilitate the installation of the protection glass and ensure the installation tightness, the glass seat 3 is provided with an annular step in the mounting hole, and the outer end face of the protection glass 2 abuts against the annular step. Thus, a sealing surface is formed to improve the tightness. And in order to further improve the tightness, a ring groove is opened on the annular step, and a conductive sealing rope 8 is arranged in the ring groove. And in order to press the protection glass 2 tightly on the glass seat 3, the glass seat 3 is provided with a locking retaining ring 5 on the inner side of the protection glass 2. The locking retaining ring 5 is threadedly connected to the glass seat 3. In this way, by screwing the locking retaining ring 5, the protection glass 2 is fixed on the glass seat 3. The locking retaining ring 5 is made of a hard material, such as metal or engineering plastic, etc., for pressing the internal structure.

[0032] As Figures 3-5As shown in the figure, in order to facilitate the installation of the conductor 4, an annular mounting seat 6 is provided between the locking retaining ring 5 and the inner end face of the protective glass 2. Both conductors 4 are arranged on the mounting seat 6. A wire groove 61 is provided on the mounting seat 6. First wires are provided on both conductors 4, and both first wires extend to the outside of the mounting seat 6 through the wire groove 61. A temperature sensor 9 is provided on the mounting seat 6. In this way, the mounting seat 6 is provided between the locking retaining ring 5 and the protective glass 2, and holes and grooves adapted for the installation of the conductor 4 and the temperature sensor 9 and a wire groove 61 for wire routing are provided on the mounting seat 6. The wire groove 61 guides the two first wires and the wire connecting the temperature sensor 9 to one side, facilitating the integration of the circuit and improving the compactness of the device. The purpose of the temperature sensor 9 is to sense the temperature distribution of the entire protective glass by monitoring the edge temperature of the protective glass 2. Since the temperature distribution of the protective glass is uniform, the value of the temperature sensor 9 is the temperature of the entire glass.

[0033] Further optimized, the glass seat 3 is made of a conductive material. A conductive gasket 7 is provided between the end face of the glass seat 3 and the mounting base 1. Before the conductive sealing rope 8 or the gasket 7 is squeezed, the conductivity is low, and after being squeezed, the conductivity increases, which is more conducive to electromagnetic shielding. The conductive sealing rope 8 or the gasket 7 can be composed of a combination of an insulating material and a non-insulating material. After being squeezed, the spatial distance between the two materials becomes smaller and the conductivity increases. Moreover, the glass seat 3, the protective glass 2 (conductive film 21), the conductive sealing rope 8, the conductive gasket 7, and the mounting base 1 form a continuously conductive electromagnetic shielding structure. The conductivity at the adjacent parts of each structure is good. When the electromagnetic radiation inside this structure passes through this structure, due to the continuous conductivity, the energy of the electromagnetic wave will be converted into heat energy and electrical energy, reducing the emission amount of the electromagnetic wave penetrating this structure and radiating into space, playing the role of electromagnetic shielding.

[0034] Further optimized, the mounting seat 6 is made of an insulating material, such as insulating plastic, etc.

[0035] Further optimized, in order to expand the contact area, one end of the conductor 4 close to the protective glass 2 is in a sheet shape, and the conductor 4 can be made of a good conductor, such as materials like copper and silver.

[0036] When installing this device, the conductive sealing rope 8 is installed into the glass seat 3, and then the protective glass 2 is coated with sealant around its perimeter and placed in; after welding wires to the conductor 4, it is installed into the mounting seat 6; the whole is pressed into the lower surface (inner end face) of the protective glass 2, where the conductor 4 should be in contact with the electrode of the protective glass 2; a set screw is screwed into the mounting seat 6 to prevent circumferential movement; a temperature sensor 9 is installed in the mounting hole of the mounting seat 6 to monitor the temperature of the protective glass, and after wiring the thermistor and merging it into the wire, it is led out from the side of the structure; then the locking retaining ring 5 is screwed into the glass seat 3; finally, the conductive gasket 7 is installed on the mounting base 1, and the structure is fastened to the mounting base 1 with screws.

[0037] The working principle of the utility model is as follows: when the outside temperature drops, the air on the outer surface of the protective glass 2 condenses into frost; the power supply energizes the two conductors 4, and the conductors 4 transmit the current to the conductive film 21 of the protective glass 2, and finally a loop is formed. The conductive film 21 of the protective glass 2 has resistance. According to Joule's law, heat can be generated on the surface of the protective glass 2, and finally the temperature is increased to defrost the surface of the protective glass. Since the glass seat 3 is made of thermal insulation material, the heat dissipation efficiency of the ring side of the protective glass 2 can be reduced, ensuring that the efficiency of heat dissipation of each part of the surface of the protective glass 2 is roughly the same, so as to maintain the synchronization of the temperature change of the surface of the protective glass 2, and reduce the temperature difference between the center and the edge of the protective glass 2. The smaller the temperature difference, the less likely the protective glass 2 is to break.

[0038] The above are only preferred embodiments of the present application, and the present invention is not limited to the above embodiments. It is understood that other improvements and changes directly derived or associated by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included in the protection scope of the present invention.

Claims

1. An optical protective glass installation structure capable of electromagnetic shielding and thermal insulation, characterized in that: include: A mounting base (1), a protective glass (2), a glass seat (3), and two conductors (4), wherein the glass seat (3) is mounted on the mounting base (1), a mounting hole is provided on the glass seat (3), the protective glass (2) is placed in the mounting hole, a conductive film (21) is provided on the outer end surface of the protective glass (2), and the two conductive bodies (4) are respectively arranged on opposite sides of the inner end surface of the protective glass (2), and both conductive bodies (4) are electrically connected to the conductive film (21); The glass seat (3) is made of thermal insulation material.

2. The optical protective glass installation structure capable of electromagnetic shielding and thermal insulation according to claim 1, characterized in that: The glass seat (3) is provided with an annular step in the mounting hole, and the outer end surface of the protective glass (2) abuts against the annular step.

3. The optical protective glass installation structure capable of electromagnetic shielding and thermal insulation according to claim 2, characterized in that: The glass seat (3) is provided with a locking pressure ring (5) on the inner side of the protective glass (2), and the locking pressure ring (5) is threadedly connected to the glass seat (3).

4. The optical protective glass installation structure capable of electromagnetic shielding and thermal insulation according to claim 3, characterized in that: An annular mounting seat (6) is arranged between the locking pressure ring (5) and the inner end surface of the protective glass (2); the two conductors (4) are arranged on the mounting seat (6); a wire groove (61) is arranged on the mounting seat (6); the two conductors (4) are arranged with a first wire; the two first wires extend to the outside of the mounting seat (6) through the wire groove (61).

5. The optical protective glass installation structure capable of electromagnetic shielding and thermal insulation according to claim 2, characterized in that: The glass seat (3) is made of a conductive material, and a conductive sealing gasket (7) is provided between the glass seat (3) and the end surface of the mounting base (1).

6. The optical protective glass installation structure capable of electromagnetic shielding and thermal insulation according to claim 5, characterized in that: An annular groove is provided on the annular step, and a conductive sealing rope (8) is arranged in the annular groove.

7. The optical protective glass installation structure capable of electromagnetic shielding and thermal insulation according to claim 4, characterized in that: A temperature sensor (9) is arranged on the mounting seat (6).

8. The optical protective glass installation structure capable of electromagnetic shielding and thermal insulation according to claim 1, characterized in that: The end of the conductor (4) close to the protective glass (2) is in a sheet shape.

9. The optical protective glass installation structure capable of electromagnetic shielding and thermal insulation according to claim 4, characterized in that: The mounting seat (6) is made of insulating material.

10. The optical protective glass installation structure capable of electromagnetic shielding and thermal insulation according to claim 1, characterized in that: The conductor (4) is made of copper or silver.

Images