CN111369892A - Waterproof function indication screen for electric appliance - Google Patents
Waterproof function indication screen for electric appliance Download PDFInfo
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- CN111369892A CN111369892A CN202010150396.3A CN202010150396A CN111369892A CN 111369892 A CN111369892 A CN 111369892A CN 202010150396 A CN202010150396 A CN 202010150396A CN 111369892 A CN111369892 A CN 111369892A
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- heat
- circuit board
- fixed
- screen
- indication screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0213—Venting apertures; Constructional details thereof
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
Abstract
The invention relates to the technical field of indication screens, and discloses a waterproof function indication screen for an electric appliance, which comprises an upper shell and a lower shell, wherein an installation support is fixed on the inner wall of the bottom of the lower shell through bolts, a circuit board is fixed on the bottom of the installation support through bolts, a heat insulation plate is fixed on the top of the installation support through bolts, an elastic gasket is arranged on the top of the heat insulation plate, an indication screen body is arranged on the top of the elastic gasket, the upper shell is fixedly clamped on the lower shell, a square hole formed in the center of the upper shell is arranged in a manner of corresponding to the indication screen body, and a heat dissipation mechanism in contact with the circuit board is arranged in the center of the bottom of the lower shell. The invention has novel structure and ingenious conception, not only effectively realizes the heat isolation between the circuit board and the indicating screen, but also ensures that the circuit board and the indicating screen do not interfere with each other, effectively prolongs the service life of the indicating screen, and has good waterproof performance.
Description
Technical Field
The invention relates to the technical field of indication screens, in particular to a waterproof function indication screen for an electric appliance.
Background
With the development of society, various display screens are applied to various electronic products to enrich the lives of people. The display screen generally includes a screen body, a driving chip, and a circuit board. The driving chip is electrically connected with the screen body and the circuit board. The indication screen is also commonly referred to as a monitor. The display is an I/O device belonging to an appliance, i.e., an input-output device. The electronic document display tool is a display tool which displays a certain electronic document on a screen through a specific transmission device and reflects the electronic document to human eyes.
However, when the existing indication screen is installed, the circuit board and the display screen are generally directly installed together, heat generated between the circuit board and the display screen can interfere with each other, the service life of the display screen is influenced, and the waterproof performance is poor. Therefore, it is necessary to design a waterproof function indication screen for electric appliances.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the waterproof function indicating screen for the electric appliance, which has the advantages of novel structure and ingenious design, not only effectively realizes the heat isolation between the circuit board and the indicating screen, but also prevents the circuit board and the indicating screen from interfering with each other, effectively prolongs the service life of the indicating screen, and has good waterproof performance.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a waterproof function indicator screen for electrical apparatus, includes casing and lower casing, the bottom inner wall of casing has the installing support through the bolt fastening down, the bottom of installing support has the circuit board through the bolt fastening, the top of installing support has the heat insulating board through the bolt fastening, the top of heat insulating board is provided with the elastic gasket, the top of elastic gasket is provided with the indicator screen body, and the joint is fixed with the casing down on the casing, and the quad slit that the center department of going up the casing was seted up just corresponds the indicator screen body installation, the bottom center department of casing installs the heat dissipation mechanism with the circuit board contact down.
According to the technical scheme, the waterproof connector is embedded into one side of the upper shell, and the output end of the waterproof connector is connected with the input end of the circuit board.
According to the technical scheme, the indication screen body comprises an indication screen, a frame and a sealing rubber ring, the frame is fixedly bonded around the indication screen, the sealing rubber ring is fixedly bonded at the top of the frame, and the sealing rubber ring is clamped and fixed around the bottom of the square hole of the upper shell.
According to the technical scheme, the mounting support comprises a support body, an upper positioning groove, a lower positioning frame, through holes and heat conducting sheet mounting grooves, the support body is fixed to the inner wall of the bottom of the lower shell through bolts, the heat conducting sheet mounting grooves are formed in the center of the inner wall of the bottom of the support body, the through holes penetrating through the heat conducting sheet mounting grooves are formed in the bottom of the support body at equal intervals, the lower positioning frame is welded and fixed to the inner wall of the bottom of the support body at equal intervals, a circuit board is fixed to the lower positioning frame through bolts, the upper positioning groove is formed in the periphery of the top of the support body, and a heat insulation board is fixedly clamped.
According to the technical scheme, heat dissipation mechanism includes heat-conducting plate, heat conduction copper pipe, radiating seat and fin, the inside at the heat-conducting plate mounting groove is fixed to the heat-conducting plate joint, the radiating seat is located through welded fastening at the bottom center of casing down, the heat conduction copper pipe that the heat-conducting plate passed casing down through the equidistance is connected with the radiating seat, the equidistant welded fastening in bottom of radiating seat has the fin.
According to the technical scheme, the heat insulation plate comprises an aerogel felt layer, a vacuum heat insulation layer and an aluminum foil reflection layer, the bottom of the aerogel felt layer is fixedly bonded with the vacuum heat insulation layer, the bottom of the vacuum heat insulation layer is fixedly bonded with the aluminum foil reflection layer, and the aluminum foil reflection layer is installed on one side close to the circuit board.
According to the technical scheme, the heat conduction silica gel is filled between the mounting bracket and the heat insulation plate and wraps the outer side of the circuit board.
According to the technical scheme, the heat-conducting silica gel is prepared from the following raw materials in parts by weight: 23-34 parts of light curing glue, 10-15 parts of silane coupling agent, 9-16 parts of vinyl trimethoxy silane, 5-9 parts of silicon micropowder, 20-24 parts of polydimethylsiloxane, 3-6 parts of dimethyl silicone oil, 5-7 parts of hydrogen-containing silicone oil, 5-7 parts of MQ silicone resin, 1-2 parts of catalyst, 1-2 parts of silica gel reinforcing agent and 1-2 parts of tackifier.
According to the technical scheme, the preparation method of the heat-conducting silica gel comprises the following steps:
the method comprises the following steps: drying the surface-treated silicon micropowder in an oven at the temperature of 120-180 ℃ for 2-4h for later use;
step two: adding dimethyl silicone oil and hydrogen-containing silicone oil into a stirring kettle, stirring and dispersing uniformly, then adding the silicon micropowder dried in the first step, heating to 60-80 ℃, starting vacuum to remove bubbles and micromolecule substances, and maintaining for 1.5-2 hours at the rotating speed of 90-130rpm to uniformly mix the materials in the stirring kettle to obtain a mixed material A;
step three: adding the photocuring glue, the silane coupling agent, the vinyl trimethoxy silane, the polydimethyl vinyl siloxane and the MQ silicon resin into a stirring kettle, heating to 180 ℃ at the rotation speed of 120-;
step four: adding the mixed material A into a stirring kettle of the mixed material B, heating to 45-60 ℃, maintaining for 2.5-3.5 hours at the rotating speed of 50-45rpm to uniformly mix the materials in the stirring kettle, and starting vacuum to remove bubbles and micromolecule substances to obtain a mixed material C;
step five: and after the mixed material C is cooled to room temperature, firstly adding the silane coupling agent, the silica gel reinforcing agent and the tackifier, uniformly stirring at the rotating speed of 55-70rpm, then adding the catalyst, uniformly mixing at the rotating speed of 60-80rpm, and vacuumizing until bubbles in the material are completely pumped out to obtain the heat-conducting silica gel.
The invention has the beneficial effects that: install the circuit board in the bottom of installing support, and install the heat insulating board at the top of installing support, thereby will instruct the screen body to separate with the circuit board, make the heat that instructs screen body and circuit board to produce in the work engineering can not mutual interference, thereby the effectual life who promotes the instruction screen, and the heat insulating board adopts the aerogel carpet veneer, vacuum insulation layer and aluminium foil reflection stratum are constituteed, make it have good heat-proof quality, be convenient for heat conduction silica gel on with the whole heat-conducting plates that transmit of absorptive heat, and transmit through heat conduction copper pipe and carry out quick heat dissipation on the fin, thereby the quick heat dissipation of circuit board has been realized, the effectual convenience that promotes the use, and adopt heat conduction silica gel full parcel circuit board, make it have good waterproof performance.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic three-dimensional structure of a waterproof function indicating screen for an electric appliance according to the present invention;
FIG. 2 is a schematic cross-sectional view of a waterproof function indicating screen for an electric appliance according to the present invention;
FIG. 3 is a schematic plan view of the indicating screen body of the present invention;
FIG. 4 is a schematic plan view of the mounting bracket of the present invention;
FIG. 5 is a schematic plan view of the heat dissipation mechanism of the present invention;
FIG. 6 is a schematic cross-sectional view of the heat shield of the present invention;
reference numbers in the figures: 1. an upper housing; 2. an indication screen body; 3. a waterproof joint; 4. mounting a bracket; 5. a heat dissipation mechanism; 6. heat conducting silica gel; 7. a circuit board; 8. an elastic pad; 9. a heat insulation plate; 10. a square hole; 11. an indication screen; 12. a frame; 13. sealing the rubber ring; 14. a stent body; 15. an upper positioning groove; 16. a lower positioning frame; 17. a through hole; 18. a heat conducting fin mounting groove; 19. a heat conducting plate; 20. a heat conducting copper pipe; 21. a heat dissipation base; 22. a heat sink; 23. an aerogel blanket; 24. a vacuum heat insulation layer; 25. an aluminum foil reflective layer; 26. a lower housing.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings 1 to 6.
Example 1: as shown in fig. 1 to 6, the present invention provides the following technical solutions: the utility model provides a waterproof function indication screen for electrical apparatus, including last casing 1 and casing 26 down, casing 26's bottom inner wall has installing support 4 through the bolt fastening down, there is circuit board 7 bottom of installing support 4 through the bolt fastening, there is heat insulating board 9 at installing support 4's top through the bolt fastening, the top of heat insulating board 9 is provided with elastic gasket 8, elastic gasket 8's top is provided with indication screen body 2, the joint is fixed with casing 1 down on casing 26, and square hole 10 that the center department of going up casing 1 seted up is just to corresponding indication screen body 2 installation, the bottom center department of casing 26 down installs heat dissipation mechanism 5 with the contact of circuit board 7.
According to the technical scheme, the waterproof connector 3 is embedded into one side of the upper shell 1, and the output end of the waterproof connector 3 is connected with the input end of the circuit board 7.
According to the technical scheme, the indication screen body 2 comprises the indication screen 11, a frame 12 and a sealing rubber ring 13, the frame 12 is fixedly bonded around the indication screen 11, the sealing rubber ring 13 is fixedly bonded at the top of the frame 12, and the sealing rubber ring 13 is clamped and fixed around the bottom of the square hole 10 of the upper shell 1.
According to the above technical scheme, installing support 4 includes stake body 14, go up constant head tank 15, locating rack 16 down, through-hole 17 and conducting strip mounting groove 18, stake body 14 passes through the bolt fastening at the bottom inner wall of casing 26 down, conducting strip mounting groove 18 has been seted up to stake body 14's bottom inner wall center department, the through-hole 17 that link up conducting strip mounting groove 18 is seted up to stake body 14's bottom equidistance, the bottom inner wall equidistance welded fastening of stake body 14 has lower locating rack 16, and there is circuit board 7 through the bolt fastening on the locating rack 16 down, last constant head tank 15 has been seted up all around stake body 14's top, and the joint is fixed with heat insulating board 9 on last constant head tank 15.
According to the technical scheme, the heat dissipation mechanism 5 comprises a heat conduction plate 19, a heat conduction copper pipe 20, a heat dissipation seat 21 and heat dissipation fins 22, the heat conduction plate 19 is clamped and fixed in the heat conduction fin installation groove 18, the heat dissipation seat 21 is fixed at the center of the bottom of the lower shell 26 through welding, the heat conduction plate 19 is connected with the heat dissipation seat 21 through the heat conduction copper pipes 20 penetrating through the lower shell 26 at equal intervals, and the heat dissipation fins 22 are fixed at the bottom of the heat dissipation seat 21 at equal intervals through welding.
According to the technical scheme, the heat insulation board 9 comprises an aerogel felt layer 23, a vacuum heat insulation layer 24 and an aluminum foil reflection layer 25, the vacuum heat insulation layer 24 is fixedly bonded to the bottom of the aerogel felt layer 23, the aluminum foil reflection layer 25 is fixedly bonded to the bottom of the vacuum heat insulation layer 24, and the aluminum foil reflection layer 25 is installed on one side close to the circuit board 7.
According to the technical scheme, the heat-conducting silica gel 6 is filled between the mounting bracket 4 and the heat insulation plate 9, and the heat-conducting silica gel 6 is wrapped on the outer side of the circuit board 7.
According to the technical scheme, the heat-conducting silica gel 6 is prepared from the following raw materials in parts by weight: 23 parts of light curing glue, 10 parts of silane coupling agent, 9 parts of vinyl trimethoxy silane, 5 parts of silicon micropowder, 20 parts of polydimethyl vinyl siloxane, 3 parts of dimethyl silicone oil, 5 parts of hydrogen-containing silicone oil, 5 parts of MQ silicone resin, 1 part of catalyst, 1 part of silica gel reinforcing agent and 1 part of tackifier.
According to the technical scheme, the preparation method of the heat-conducting silica gel 6 comprises the following steps:
the method comprises the following steps: drying the surface-treated silicon micropowder in an oven at the temperature of 120-180 ℃ for 2-4h for later use;
step two: adding dimethyl silicone oil and hydrogen-containing silicone oil into a stirring kettle, stirring and dispersing uniformly, then adding the silicon micropowder dried in the first step, heating to 60-80 ℃, starting vacuum to remove bubbles and micromolecule substances, and maintaining for 1.5-2 hours at the rotating speed of 90-130rpm to uniformly mix the materials in the stirring kettle to obtain a mixed material A;
step three: adding the photocuring glue, the silane coupling agent, the vinyl trimethoxy silane, the polydimethyl vinyl siloxane and the MQ silicon resin into a stirring kettle, heating to 180 ℃ at the rotation speed of 120-;
step four: adding the mixed material A into a stirring kettle of the mixed material B, heating to 45-60 ℃, maintaining for 2.5-3.5 hours at the rotating speed of 50-45rpm to uniformly mix the materials in the stirring kettle, and starting vacuum to remove bubbles and micromolecule substances to obtain a mixed material C;
step five: and after the mixed material C is cooled to room temperature, firstly adding the silane coupling agent, the silica gel reinforcing agent and the tackifier, uniformly stirring at the rotating speed of 55-70rpm, then adding the catalyst, uniformly mixing at the rotating speed of 60-80rpm, and vacuumizing until bubbles in the material are completely pumped out to obtain the heat-conducting silica gel.
Example 2: as shown in fig. 1 to 6, the present invention provides the following technical solutions: the utility model provides a waterproof function indication screen for electrical apparatus, including last casing 1 and casing 26 down, casing 26's bottom inner wall has installing support 4 through the bolt fastening down, there is circuit board 7 bottom of installing support 4 through the bolt fastening, there is heat insulating board 9 at installing support 4's top through the bolt fastening, the top of heat insulating board 9 is provided with elastic gasket 8, elastic gasket 8's top is provided with indication screen body 2, the joint is fixed with casing 1 down on casing 26, and square hole 10 that the center department of going up casing 1 seted up is just to corresponding indication screen body 2 installation, the bottom center department of casing 26 down installs heat dissipation mechanism 5 with the contact of circuit board 7.
According to the technical scheme, the waterproof connector 3 is embedded into one side of the upper shell 1, and the output end of the waterproof connector 3 is connected with the input end of the circuit board 7.
According to the technical scheme, the indication screen body 2 comprises the indication screen 11, a frame 12 and a sealing rubber ring 13, the frame 12 is fixedly bonded around the indication screen 11, the sealing rubber ring 13 is fixedly bonded at the top of the frame 12, and the sealing rubber ring 13 is clamped and fixed around the bottom of the square hole 10 of the upper shell 1.
According to the above technical scheme, installing support 4 includes stake body 14, go up constant head tank 15, locating rack 16 down, through-hole 17 and conducting strip mounting groove 18, stake body 14 passes through the bolt fastening at the bottom inner wall of casing 26 down, conducting strip mounting groove 18 has been seted up to stake body 14's bottom inner wall center department, the through-hole 17 that link up conducting strip mounting groove 18 is seted up to stake body 14's bottom equidistance, the bottom inner wall equidistance welded fastening of stake body 14 has lower locating rack 16, and there is circuit board 7 through the bolt fastening on the locating rack 16 down, last constant head tank 15 has been seted up all around stake body 14's top, and the joint is fixed with heat insulating board 9 on last constant head tank 15.
According to the technical scheme, the heat dissipation mechanism 5 comprises a heat conduction plate 19, a heat conduction copper pipe 20, a heat dissipation seat 21 and heat dissipation fins 22, the heat conduction plate 19 is clamped and fixed in the heat conduction fin installation groove 18, the heat dissipation seat 21 is fixed at the center of the bottom of the lower shell 26 through welding, the heat conduction plate 19 is connected with the heat dissipation seat 21 through the heat conduction copper pipes 20 penetrating through the lower shell 26 at equal intervals, and the heat dissipation fins 22 are fixed at the bottom of the heat dissipation seat 21 at equal intervals through welding.
According to the technical scheme, the heat insulation board 9 comprises an aerogel felt layer 23, a vacuum heat insulation layer 24 and an aluminum foil reflection layer 25, the vacuum heat insulation layer 24 is fixedly bonded to the bottom of the aerogel felt layer 23, the aluminum foil reflection layer 25 is fixedly bonded to the bottom of the vacuum heat insulation layer 24, and the aluminum foil reflection layer 25 is installed on one side close to the circuit board 7.
According to the technical scheme, the heat-conducting silica gel 6 is filled between the mounting bracket 4 and the heat insulation plate 9, and the heat-conducting silica gel 6 is wrapped on the outer side of the circuit board 7.
According to the technical scheme, the heat-conducting silica gel 6 is prepared from the following raw materials in parts by weight: 34 parts of light curing glue, 15 parts of silane coupling agent, 16 parts of vinyl trimethoxy silane, 9 parts of silicon micropowder, 24 parts of polydimethyl vinyl siloxane, 6 parts of dimethyl silicone oil, 7 parts of hydrogen-containing silicone oil, 7 parts of MQ silicone resin, 2 parts of catalyst, 2 parts of silica gel reinforcing agent and 2 parts of tackifier.
According to the technical scheme, the preparation method of the heat-conducting silica gel 6 comprises the following steps:
the method comprises the following steps: drying the surface-treated silicon micropowder in an oven at the temperature of 120-180 ℃ for 2-4h for later use;
step two: adding dimethyl silicone oil and hydrogen-containing silicone oil into a stirring kettle, stirring and dispersing uniformly, then adding the silicon micropowder dried in the first step, heating to 60-80 ℃, starting vacuum to remove bubbles and micromolecule substances, and maintaining for 1.5-2 hours at the rotating speed of 90-130rpm to uniformly mix the materials in the stirring kettle to obtain a mixed material A;
step three: adding the photocuring glue, the silane coupling agent, the vinyl trimethoxy silane, the polydimethyl vinyl siloxane and the MQ silicon resin into a stirring kettle, heating to 180 ℃ at the rotation speed of 120-;
step four: adding the mixed material A into a stirring kettle of the mixed material B, heating to 45-60 ℃, maintaining for 2.5-3.5 hours at the rotating speed of 50-45rpm to uniformly mix the materials in the stirring kettle, and starting vacuum to remove bubbles and micromolecule substances to obtain a mixed material C;
step five: and after the mixed material C is cooled to room temperature, firstly adding the silane coupling agent, the silica gel reinforcing agent and the tackifier, uniformly stirring at the rotating speed of 55-70rpm, then adding the catalyst, uniformly mixing at the rotating speed of 60-80rpm, and vacuumizing until bubbles in the material are completely pumped out to obtain the heat-conducting silica gel.
Experimental example:
subject: the heat-conducting silica gel prepared in the embodiment of the invention is used as a first experimental group, a second experimental group and a third experimental group, and the heat-conducting silica gel with common quality on the market, such as Kafter K-5202 heat-conducting silica gel, is selected as a first comparative group.
Purpose of the experiment: and testing the insulativity, the thermal conductivity coefficient and the flame retardance of each group of the heat-conducting silica gel.
The experimental method comprises the following steps: according to the national heat-conducting silica gel test standard and the national standards GB/T1408.1, GB11205 and GB/T13488, the heat-conducting silica gel prepared by the experimental group and the Kafft K-5202 heat-conducting silica gel are subjected to insulation, heat conductivity coefficient and flame retardance tests by adopting a professional instrument, and the experimental results are recorded.
Table of experimental results:
the experimental results show that the heat-conducting silica gel disclosed by the invention has good heat-conducting property, insulating property and flame retardant property, and meets the requirements of the heat-conducting silica gel in the electronic industry.
When the heat-insulating type heat-conducting silica gel heat-conducting device is used, the circuit board 7 is arranged at the bottom of the mounting bracket 4, the heat-insulating plate 9 is arranged at the top of the mounting bracket 4, so that the indication screen body 2 is separated from the circuit board 7, heat generated by the indication screen body 2 and the circuit board 7 in a working process cannot interfere with each other, the service life of the indication screen is effectively prolonged, the heat-insulating plate 9 consists of the aerogel felt layer 23, the vacuum heat-insulating layer 24 and the aluminum foil reflecting layer 25, the heat-insulating type heat-conducting silica gel heat-conducting plate has good heat-insulating performance, the heat-conducting silica gel 6 is convenient to completely transfer absorbed heat to the heat-conducting plate 19 and transfer to the heat-radiating fins 22 through the heat-conducting copper tube 20 for rapid heat radiation, the rapid heat radiation of the circuit board 7 is realized, the use convenience is effectively improved, the circuit board 7 is completely wrapped, The silane coupling agent, the vinyl trimethoxy silane, the polydimethyl vinyl siloxane and the MQ silicon resin are used as main raw materials, the dimethyl silicone oil and the hydrogen-containing silicone oil are used as auxiliary raw materials, and the molded heat-conducting silica gel 6 has good heat-conducting property, insulating property and flame retardant property, and meets the requirements of heat-conducting silica gel in the electronic industry.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a waterproof function indication screen for electrical apparatus, includes casing (1) and casing (26) down, its characterized in that, the bottom inner wall of casing (26) has installing support (4) through the bolt fastening down, the bottom of installing support (4) has circuit board (7) through the bolt fastening, the top of installing support (4) has heat insulating board (9) through the bolt fastening, the top of heat insulating board (9) is provided with elastic gasket (8), the top of elastic gasket (8) is provided with indication screen body (2), and the joint is fixed with casing (1) down on casing (26), and square hole (10) of seting up in the center department of going up casing (1) just correspond indication screen body (2) installation, the bottom center department of casing (26) installs heat dissipation mechanism (5) with circuit board (7) contact down.
2. The waterproof function indicating screen for the electric appliance according to claim 1, wherein the waterproof connector (3) is embedded and installed on one side of the upper shell (1), and the output end of the waterproof connector (3) is connected with the input end of the circuit board (7).
3. The waterproof function indication screen for the electric appliance according to claim 1, wherein the indication screen body (2) comprises an indication screen (11), a frame (12) and a sealing rubber ring (13), the frame (12) is fixedly bonded around the indication screen (11), the sealing rubber ring (13) is fixedly bonded on the top of the frame (12), and the sealing rubber ring (13) is clamped and fixed around the bottom of the square hole (10) of the upper shell (1).
4. The waterproof function indication screen for electric appliances according to claim 1, the mounting bracket (4) comprises a bracket body (14), an upper positioning groove (15), a lower positioning frame (16), a through hole (17) and a heat conducting fin mounting groove (18), the bracket body (14) is fixed on the inner wall of the bottom of the lower shell (26) through bolts, a heat conducting fin mounting groove (18) is arranged at the center of the inner wall of the bottom of the bracket body (14), the bottom of the bracket body (14) is provided with through holes (17) which penetrate through the heat conducting sheet mounting grooves (18) at equal intervals, the inner wall of the bottom of the bracket body (14) is welded and fixed with lower positioning frames (16) at equal intervals, and a circuit board (7) is fixed on the lower positioning frame (16) through a bolt, an upper positioning groove (15) is formed around the top of the bracket body (14), and a heat insulation plate (9) is clamped and fixed on the upper positioning groove (15).
5. The waterproof function indication screen for the electric appliance according to claim 1, wherein the heat dissipation mechanism (5) comprises a heat conduction plate (19), a heat conduction copper pipe (20), a heat dissipation seat (21) and heat dissipation fins (22), the heat conduction plate (19) is clamped and fixed in the heat conduction fin installation groove (18), the heat dissipation seat (21) is fixed at the center of the bottom of the lower shell (26) through welding, the heat conduction plate (19) penetrates through the heat conduction copper pipe (20) of the lower shell (26) at equal intervals to be connected with the heat dissipation seat (21), and the heat dissipation fins (22) are fixed at equal intervals to the bottom of the heat dissipation seat (21).
6. The waterproof function indicating screen for the electric appliances is characterized in that the heat insulation board (9) comprises an aerogel felt layer (23), a vacuum heat insulation layer (24) and an aluminum foil reflection layer (25), the vacuum heat insulation layer (24) is fixedly bonded to the bottom of the aerogel felt layer (23), the aluminum foil reflection layer (25) is fixedly bonded to the bottom of the vacuum heat insulation layer (24), and the aluminum foil reflection layer (25) is installed on one side close to the circuit board (7).
7. The waterproof function indicating screen for the electric appliance according to claim 1, wherein a heat conducting silica gel (6) is filled between the mounting bracket (4) and the heat insulation plate (9), and the heat conducting silica gel (6) is wrapped on the outer side of the circuit board (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010150396.3A CN111369892A (en) | 2020-03-06 | 2020-03-06 | Waterproof function indication screen for electric appliance |
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| CN202010150396.3A CN111369892A (en) | 2020-03-06 | 2020-03-06 | Waterproof function indication screen for electric appliance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593438A (en) * | 2021-08-09 | 2021-11-02 | 路特迩科技(杭州)有限公司 | All-weather variable information signboard based on liquid crystal display screen and safety management method thereof |
| CN115528553A (en) * | 2022-09-15 | 2022-12-27 | 南京开关厂股份有限公司 | Bury formula ring box with actively dehumidification function |
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