CN212656739U

CN212656739U - Dimming glass control module

Info

Publication number: CN212656739U
Application number: CN202020681178.8U
Authority: CN
Inventors: 张振中; 余小鹏
Original assignee: Continental Automotive Changchun Co Ltd
Current assignee: Continental Automotive Changchun Co Ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2021-03-05
Anticipated expiration: 2030-04-28

Abstract

The utility model discloses a dimming glass control module installs in the roof panel beating, include: the first heat radiating piece is arranged between the upper cover and the car roof metal plate and is respectively contacted with the upper cover and the car roof metal plate; and a second heat radiating piece which is respectively contacted with the upper cover and the PCB mainboard is arranged between the upper cover and the PCB mainboard. Through the arrangement of the heat dissipation pieces between the upper cover and the vehicle roof metal plate and between the upper cover and the PCB main board, the heat generated by the PCB main board is sequentially led into the vehicle roof metal plate through the second heat dissipation piece, the upper cover and the first heat dissipation piece in a heat conduction mode, so that the heat dissipation capability of the control module is enhanced, and the device is prevented from being damaged due to the fact that the heat cannot be dissipated in time. In addition, the heat of the PCB main board is conducted into the car roof metal plate, and finally the heat is dissipated out of the car by the car roof metal plate, so that the increase of the temperature in the car caused by downward radiation of the heat into the car is avoided, and the effect of blocking the heat by the dimming glass is further enhanced.

Description

Dimming glass control module

Technical Field

The utility model relates to an automobile field, in particular to light control glass control module.

Background

The light-regulating glass is a novel special photoelectric glass product, also called electric control light-regulating glass, and is an integrally formed sandwich structure formed by compounding a liquid crystal film between two layers of glass and gluing the two layers of glass at high temperature and high pressure. The existing electric control dimming glass realizes the switching of the dimming glass between a transparent state and an opaque state by controlling the on and off of a power supply. When the power supply of the light control glass is turned off, liquid crystal molecules in the electric control light control glass are in an irregular dispersion state, and the electric control glass is in a transparent and opaque appearance state; when the dimming glass is electrified, the liquid crystal molecules in the dimming glass are arranged in order, light can penetrate through the dimming glass freely, and the dimming glass is in a transparent state instantly.

At present, some automobile top skylights in the market are provided with the dimming glass so as to achieve the effects of appropriately protecting privacy, blocking heat, resisting ultraviolet rays and the like. Generally, the dimming glass is electrically connected with the control module, and the dimming glass is adjusted by the control module to be switched among various states so as to meet actual requirements. However, because the power of the control module is high, the generated heat is also high, the existing control module cannot effectively perform heat dissipation treatment, the control module is easily damaged, and high quality hidden danger exists.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at solves the unable effective radiating technical problem of dimming glass control module among the prior art.

In order to achieve the above object, an embodiment of the utility model discloses a dimming glass control module installs in the roof panel beating, include: the heat dissipation structure comprises an upper cover and a PCB main board, wherein a first heat dissipation piece is arranged between the upper cover and a vehicle roof metal plate and is respectively contacted with the upper cover and the vehicle roof metal plate; and a second heat radiating piece is arranged between the upper cover and the PCB main board and is respectively contacted with the upper cover and the PCB main board so as to form a heat conduction path from the PCB main board to a vehicle roof metal plate through the second heat radiating piece, the upper cover and the first heat radiating piece in sequence.

On one hand, heat generated by the PCB main board can be guided into the vehicle roof metal plate through the second heat radiating piece, the upper cover and the first heat radiating piece in sequence in a heat conduction mode, so that the heat radiating capacity of the control module is enhanced, and the damage of the PCB main board in the control module due to the fact that the heat cannot be radiated in time is avoided; on the other hand, the heat generated by the PCB main board is transmitted to the car roof metal plate through the first heat radiating piece and the second heat radiating piece, namely, the heat is conducted to the car roof metal plate from the PCB main board, and finally most of heat is radiated to the outside of the car from the car roof metal plate, so that the temperature in the car is prevented from being increased due to the fact that the heat is radiated into the car, and the effect of blocking the heat of the dimming glass is further enhanced.

Optionally, in the dimming glass control module provided by the embodiment of the present invention, a concave cavity is concavely provided on one side of the upper cover facing the PCB main board, and the concave cavity is convex towards the direction of the roof metal plate; the second heat dissipation member is disposed in the cavity.

Optionally, in the dimming glass control module provided by the embodiment of the present invention, the second heat dissipation member is a heat dissipation caulking agent and is filled in the cavity.

Optionally, in the utility model provides an among the dimming glass control module, the degree of depth of cavity is 0.2mm to 0.4 mm.

Optionally, the embodiment of the utility model provides an among the dimming glass control module, one side that the PCB mainboard was covered dorsad is provided with the shield cover.

Optionally, the embodiment of the utility model provides an among the dimming glass control module, one side that the PCB mainboard was covered dorsad has a plurality of fixation clamps for fixed shield cover.

Optionally, the embodiment of the utility model provides an among the dimming glass control module, the upper cover has at least one first arch that contacts with the PCB mainboard, and upper cover and first bellied material are the metal.

Optionally, in the dimming glass control module provided in an embodiment of the present invention, the lower cover has a second protrusion on a side of the lower cover facing the shielding case, and the second protrusion abuts against the shielding case; the lower cover is connected with the upper cover.

Optionally, in the utility model provides an among the dimming glass control module, first radiating piece respectively with upper cover and roof panel beating interference fit.

Optionally, in the utility model provides an among the dimming glass control module, first radiating part is the silica gel piece.

Compared with the prior art, the technical scheme of the utility model have following advantage:

the embodiment of the utility model provides a dimming glass control module, through set up the first heat dissipation piece between upper cover and roof panel beating and set up the second heat dissipation piece between upper cover and PCB mainboard, on the one hand can be with the heat that the PCB mainboard produced in the heat-conduction mode lead in to the roof panel beating through the second heat dissipation piece, upper cover and first heat dissipation piece in proper order, make the heat-sinking capability of this control module can strengthen, thus avoid the PCB mainboard in the control module to lead to damaging because of the heat can't give off in time; on the other hand, the heat generated by the PCB main board is transmitted to the car roof metal plate through the first heat radiating piece and the second heat radiating piece, namely the heat transmission direction is the direction in which the heat is guided to the car roof metal plate by the PCB main board, and finally most of the heat is radiated to the outside of the car by the car roof metal plate, so that the increase of the temperature in the car caused by the radiation of the heat to the inside of the car is avoided, and the effect of blocking the heat by the dimming glass is further enhanced.

Drawings

Fig. 1 is a schematic structural diagram of a light control glass module according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a light control glass module according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an upper cover in a dimming glass control module according to an embodiment of the present invention;

FIG. 4 is a side view of FIG. 3 taken along the line B-B;

FIG. 5 is an enlarged fragmentary view taken along line A of FIG. 4;

fig. 6 is a schematic structural diagram of a PCB motherboard in a dimming glass control module according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a lower cover in a dimming glass control module according to an embodiment of the present invention.

Detailed Description

The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

In the description of the present embodiment, it should be noted that the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," "fixed," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The intelligent dimming glass is electrically connected with the dimming glass control module, and the arrangement of liquid crystal molecules in the dimming glass is adjusted through the dimming glass control module so as to change the intensity of light penetrating through the dimming glass and achieve the dimming purpose. However, the driving voltage required by the dimming glass control module is relatively large, generally more than 30V, and even up to 100V, so that the power of the dimming glass control module is large, heat is generated more, and if the dimming glass control module cannot dissipate heat in time, the dimming glass control module is easy to cause self failure and even burn out.

As shown in fig. 1, an embodiment of the present invention provides a dimming glass control module for being installed on a roof metal plate 7, and the dimming glass control module may include an upper cover 2 and a pcb (printed Circuit board) main board 4, wherein a first heat sink 1 is disposed between the upper cover 2 and the roof metal plate 7, and the first heat sink 1 is in contact with the upper cover 2 and the roof metal plate 7 respectively. A second heat dissipation part 3 is arranged between the upper cover 2 and the PCB main board 4, the second heat dissipation part 3 is respectively contacted with the upper cover 2 and the PCB main board 4, and thus a heat conduction path from the PCB main board 4 to the roof metal plate 7 through the second heat dissipation part 3, the upper cover 2 and the first heat dissipation part 1 in sequence is formed.

Specifically, the dimming glass control module is installed on one side of the roof metal plate 7 facing the vehicle interior, the PCB main board 4 of the dimming glass control module generates a large amount of heat when the dimming glass is adjusted, in the embodiment, the first heat dissipation member 1 is arranged between the upper cover 2 and the roof metal plate 7, and the second heat dissipation member 3 is arranged between the upper cover 2 and the PCB main board, so that the heat generated by the PCB main board is transferred to the upper cover 2 in a heat conduction manner through the second heat dissipation member 3, then the heat received by the upper cover 2 is transferred to the roof metal plate 7 in the same heat conduction manner through the first heat dissipation member 1, and finally the heat is dissipated by the roof metal plate 7. It should be noted that the heat generated by the PCB main board 4 in the present embodiment is conducted in the direction (indicated by the direction X in fig. 1) in which the heat is guided from the PCB main board 4 to the roof metal plate 7, so as to avoid the heat radiating downward into the vehicle, and the heat is conducted in a heat conduction manner, which is more efficient than the heat conduction manner such as heat radiation.

Therefore, in the dimming glass control module provided by the embodiment, on one hand, heat generated by the PCB main board 4 is guided into the roof metal plate 7 through the second heat dissipation member 3, the upper cover 2 and the first heat dissipation member 1 in sequence in a heat conduction manner, so that the heat dissipation capability of the control module is enhanced, and the PCB main board 4 in the control module is prevented from being damaged due to the fact that the heat cannot be dissipated in time; on the other hand, the heat generated by the PCB main board 4 is transferred to the roof metal plate through the first heat radiating piece 1 and the second heat radiating piece 3, namely the heat transfer direction of the PCB main board 4 is guided to the roof metal plate 7 by the PCB main board 4, and finally most of the heat is radiated to the outside of the vehicle by the roof metal plate 7, so that the increase of the temperature in the vehicle caused by the radiation of the part of heat to the inside of the vehicle is avoided, and the effect of blocking the heat by the dimming glass is further enhanced.

Referring to fig. 3 and 4, as an alternative embodiment of the present embodiment, a concave cavity 23 is concavely provided on a side of the upper cover 2 facing the main board of the PCB, and the concave cavity 23 is convex toward the sheet metal direction of the roof; the second heat dissipation element 3 is arranged in the cavity 23.

Fig. 4 is a side view of fig. 3 taken along a cross-sectional plane B-B, and specifically, a cavity 23 may be recessed toward one side of the PCB main board 4 in a diagonal line region (refer to a dashed-line frame region in fig. 3, but not limited to the dashed-line frame region), and optionally, the second heat dissipation member 3 is a heat dissipation gap filler filled in the cavity 23, and as can be seen from fig. 3 and 4, the heat dissipation gap filler is in large-area contact with the upper cover 2 and the PCB main board 4. The purpose of such a large area contact is to better transfer the heat generated by the PCB main board 4 to the upper cover 2 via the heat-dissipating gap filler. In addition, in order to achieve the cost and the heat dissipation effect, as shown in fig. 5, as an alternative embodiment of the present embodiment, the depth d of the concave cavity 23 may be set between 0.2mm and 0.4 mm. It should be noted that the heat-dissipating gap filler mentioned in the present embodiment may include various types, such as heat-dissipating silicone gap filler, heat-conductive putty paste, heat-conductive gel, etc., and is not limited herein.

As an alternative to this embodiment, the first heat sink 1 is in interference fit with the upper cover 2 and the roof sheet metal 7, so that heat can be better conducted to the roof sheet metal. Optionally, the first heat dissipation element 1 may be a silicone sheet. Specifically, the upper cover 2 may be provided with two third protrusions 25, and the height of the third protrusions 25 is smaller than the thickness of the silicone sheet, for example, the height of the third protrusions 25 may be set to 1mm, and the thickness of the silicone sheet is 1.5mm, so that it is ensured that the silicone sheet can be tightly attached between the upper cover 2 and the roof metal plate 7, heat is better introduced into the roof metal plate 7, vibration and noise are reduced, and breakage of the silicone sheet caused by excessive extrusion of the upper cover 2 and the roof metal plate 7 can be avoided.

It should be noted that although the silicone sheet is selected as the first heat sink 1 in the embodiment, the first heat sink 1 is not limited thereto, and may also be a Thermal Interface Material (TIM) with high heat dissipation performance, such as silicone grease, a heat dissipation pad, a phase change material, a phase change metal sheet, and a heat conductive adhesive, which is not limited herein.

Referring to fig. 2, in an implementation, connectors 41 are further disposed on two sides of the PCB main board 4, respectively, and the light control glass module can be electrically connected to a vehicle body power supply through the connectors 41 to supply a driving voltage to the control module.

As an alternative to this embodiment, the upper cover 2 and the PCB main board 4 may be connected by riveting, so that the PCB main board and the upper cover 2 are connected more firmly. Here, the upper cover 2 can be provided with a riveting column, and the PCB main board 4 is provided with a corresponding clamping groove; a riveting column can be arranged on the PCB mainboard 4, and a corresponding clamping groove is arranged on the upper cover 2; alternatively, the riveting may be performed by other methods, which are not limited herein. Considering the cost and the process difficulty, optionally, as shown in fig. 3, a riveting column 21 may be circumferentially disposed on one side of the upper cover 2 facing the PCB main board 4, a groove matched with the riveting column 21 is disposed on a corresponding side of the PCB main board, and the upper cover 2 is riveted with the PCB main board 4 by the riveting column 21 being engaged with the groove. Although fig. 3 shows that the upper cover 2 is provided with 4 riveting columns at four corners, the positions and the number of the riveting columns and the corresponding grooves on the PCB main board are not limited thereto, and the riveting columns and the corresponding grooves can be provided according to actual requirements.

Referring to fig. 2, in order to prevent electromagnetic interference, as an alternative embodiment of the present embodiment, a shielding cover 6 is further disposed on a side of the PCB main board 4 of the dimming glass control module, which faces away from the upper cover 2, and the shielding cover can cover electronic devices on the PCB main board 4, and the material of the shielding cover is metal, such as iron, aluminum, copper, and the like.

Referring to fig. 6, optionally, the side of the PCB main board 4 facing away from the upper cover 2 has a fixing member 42 for fixing the shield can 6. Specifically, the fixing members 42 may be fixing clips, and the fixing clips may be disposed in a plurality and distributed around the PCB main board 4. When the device is specifically implemented, the shielding cover 6 can be automatically inserted into the fixing clamp on a production line, the device is convenient and simple, and the working efficiency is improved. In addition, for the common way of welding the shield cover on the PCB mainboard, use the fixed shield cover of fixation clamp to guarantee to assemble and can not influence the measuring of producing the pipeline front road ICT to components and parts after producing the line, and easily dismantle. When the production line needs to analyze the problem PCB mainboard, the shielding case can be detached for detection, and scrappage is reduced. The fixing clip may be disposed on the PCB main board 4 by means of bonding, welding, etc., which is not limited herein.

With continued reference to fig. 3 and 4, in order to further optimize the electromagnetic shielding effect, the upper cover further has at least one first protrusion 24 contacting with the PCB main board, and the material of the upper cover 2 and the first protrusion 24 is metal, and the arrangement of the first protrusion 24 can enable the upper cover 2 to better contact with the PCB main board 4 at the first protrusion 24, so as to optimize the electromagnetic shielding. The PCB mainboard contacts with the upper cover 2 that is the metal material equally through the first arch 24 of metal material, is equivalent to the effect that realizes PCB mainboard ground connection to electromagnetic shield's ability has further been improved. Specifically, in the present embodiment, the number of the first protrusions 24 is 4, and the first protrusions may be located on two long sides of the upper cover 2, but in other embodiments, the number and the positions of the first protrusions 24 may be set according to actual needs, and are not limited herein.

Referring to fig. 2 and 7, as an optional embodiment of the present invention, the dimming glass control module may further include a lower cover 5, the lower cover 5 has a second protrusion 53 toward one side of the shielding case 6, and the second protrusion 53 abuts against the shielding case 6 on the PCB main board 4, so as to reduce the risk that the shielding case 6 falls off from the PCB main board 4 and the shielding case 6 rattles abnormally. The shield case 6 is housed in the lower cover 5, and the lower cover 5 is connected to the upper cover 2. Optionally, in this embodiment, as shown in fig. 7, the number of the second protrusions 53 is 5, and the second protrusions are respectively distributed at four corners and a central position of the lower cover 5, but in other embodiments, the number and the positions of the second protrusions may be set according to actual needs, and are not limited herein.

Optionally, two long sides of the lower cover 5 are respectively provided with mounting buckles 54 distributed at intervals, a corresponding position of the upper cover 2 is provided with a mounting protrusion 22 matched with the mounting buckles 54, and the upper cover 2 and the lower cover 5 are connected with the mounting buckles 54 in a clamping manner through the mounting protrusions 22. And, still have the installation foot 51 that opens the screw on two short sides of lower cover 5 respectively, treat upper cover 2, PCB mainboard 4, shield cover 6 and lower cover 5 and connect the back, again with the installation foot 51 of lower cover 5 through bolt and roof panel beating 7 be connected to closely pressfitting first radiating part 1 between upper cover 2 and roof panel beating 7, make better with the heat transfer to roof panel beating 7 step by PCB mainboard 4. In addition, in order to prevent the control module from being installed reversely, the lower cover 5 is further provided with a positioning pin 52, and the positioning pin 52 is matched with a hole groove on the roof sheet metal 7, so that an installer can conveniently and better recognize the installation direction.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, and the specific embodiments thereof are not intended to be limiting. Various changes in form and detail may be made therein by those skilled in the art, including simple deductions or substitutions without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a dimming glass control module installs in roof panel beating, its characterized in that includes: the heat dissipation structure comprises an upper cover and a PCB main board, wherein a first heat dissipation piece is arranged between the upper cover and a roof metal plate and is respectively contacted with the upper cover and the roof metal plate; the upper cover with be equipped with the second radiating piece between the PCB mainboard, the second radiating piece respectively with the upper cover with the PCB mainboard contact, in order to form follow the PCB mainboard passes through in proper order the second radiating piece the upper cover first radiating piece extremely the heat-conduction route of roof panel beating.

2. The dimming glass control module according to claim 1, wherein a concave cavity is concavely formed on one side of the upper cover facing the PCB main board, and the concave cavity is convex towards the direction of the roof sheet metal; the second heat dissipation member is disposed in the cavity.

3. The dimming glass control module of claim 2, wherein the second heat dissipation member is a heat dissipation gap filler filled in the cavity.

4. The dimming glass control module of claim 2, wherein the cavity has a depth of 0.2mm to 0.4 mm.

5. The dimming glass control module of claim 1, wherein a side of the PCB motherboard facing away from the upper cover is provided with a shielding can.

6. The dimming glass control module of claim 5, wherein a side of the PCB motherboard facing away from the top cover has a plurality of retaining clips for retaining the shielding cage.

7. The dimming glass control module according to claim 1 or 5, wherein the upper cover has at least one first protrusion contacting with the PCB main board, and the upper cover and the first protrusion are both made of metal.

8. The dimming glass control module of claim 5, further comprising: the lower cover is provided with a second bulge on one side facing the shielding case, and the second bulge is abutted with the shielding case; the lower cover is connected with the upper cover.

9. The dimming glass control module of claim 1, wherein the first heat sink is interference fit with the upper cover and the roof sheet metal, respectively.

10. The dimming glass control module of claim 1, wherein the first heat sink is a silicone sheet.