CN210591410U

CN210591410U - Novel vehicle-mounted instrument

Info

Publication number: CN210591410U
Application number: CN201920659030.1U
Authority: CN
Inventors: 王会镇
Original assignee: National New Energy Vehicle Co ltd
Current assignee: National New Energy Vehicle Co ltd
Priority date: 2019-05-09
Filing date: 2019-05-09
Publication date: 2020-05-22
Anticipated expiration: 2029-05-09

Abstract

The utility model discloses a novel vehicle-mounted instrument, including the backshell, still include display module, speaker, automatically controlled subassembly and radiating piece, display module and backshell looks lock joint, the space that the two encloses is the shielded area, be equipped with automatically controlled subassembly in the shielded area. The beneficial effects of the utility model are that, shielding electromagnetic radiation, benign heat dissipation.

Description

Novel vehicle-mounted instrument

Technical Field

The utility model relates to an on-vehicle instrument improves, especially a novel on-vehicle instrument.

Background

The vehicle-mounted instrument system is a comprehensive display device for various working condition information of the vehicle. The vehicle-mounted instrument is mechanical at first, namely only a speedometer, an odometer and a tachometer are additionally provided with some alarm lamps. With the development of automobile technology, the structure of a vehicle is more and more complex, and more information needs to be displayed, so that a mechanical pointer and liquid crystal display mode appears. In recent years, with the development of display technologies, technologies such as LCD and OLED are becoming mature, the cost of liquid crystal display is gradually reduced, and in order to improve visual enjoyment of customers and increase driving pleasure, large-size liquid crystal display and even full-liquid crystal virtual display instruments are gradually favored by the market. The utility model discloses a surface display form for containing liquid crystal display's instrument.

The existing product shell is ABS + PC, and the purpose is that the lightweight is realized, increases the insulation resistance of instrument and automobile body, but along with instrument display screen increases, main chip calculated amount increases, for guaranteeing display effect, needs to improve the calculation frequency of main chip, brings two problems thereupon:

1. the EMC problem is prominent;

2. the heat productivity is increased;

in summary, it is an urgent need to design a vehicle instrument to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem, a novel vehicle-mounted instrument is designed.

The technical scheme of the utility model is that, the novel vehicle-mounted instrument comprises a rear shell, a display component, a loudspeaker, an electric control component and a heat radiating piece, wherein the display component is buckled with the rear shell, the space enclosed by the display component and the rear shell is a shielding area, and the electric control component is arranged in the shielding area;

the heat dissipation piece comprises a heat conduction plate, a first bulge and a second bulge, the heat conduction plate is fixedly connected with the surface of the rear shell, the first bulge and the second bulge are attached to the surface of the heat conduction plate of the rear shell, the first bulge and the second bulge respectively penetrate through the rear shell and are in contact with the electric control assembly, and a grid used for increasing the heat dissipation area is formed on the heat conduction plate.

Preferably, the display module comprises a display screen backlight module, an FOG module and an outer shell, the display screen backlight module and the FOG module are arranged in the outer shell, and the FOG module is connected with the display screen backlight module in a clamping mode.

Preferably, the electronic control assembly comprises a PCB integrated with a main control chip, an MCU and a power management chip, the backlight module is connected with the PCB through a first flexible circuit board, and the FOG module is connected with the PCB through a second flexible circuit board.

Preferably, a speaker is disposed on the first surface of the PCB.

Preferably, the shell includes display screen front shroud and display screen rear cover, the butt joint of display screen front shroud and display screen rear cover forms the dust zone, be equipped with in the dust zone of the inside of shell the display screen backlight unit and the FOG module.

Preferably, the surface of the PCB board far away from the rear cover of the display screen is a first surface; the surface of the PCB close to the rear cover of the display screen is a second surface.

Preferably, a shock absorption foam is arranged between the display screen rear cover and the loudspeaker.

Preferably, the first bulge penetrates through the rear shell and is connected with a main control chip on the PCB through a main control chip heat dissipation silica gel sheet; the second bulge penetrates through the rear shell and is connected with the power management chip on the PCB through the power management chip heat dissipation silica gel sheet.

Preferably, the gap between the rear case and the PCB board of the display assembly is filled with a conductor spacer.

Preferably, a waterproof tape for sealing and waterproofing is attached to the edge of the display screen front cover.

Utilize the technical scheme of the utility model a novel on-vehicle instrument of preparation has following

Has the advantages that:

firstly, a display module is matched with a galvanized iron plate and a cast aluminum radiating fin to fully wrap a conductor of an instrument main control component so as to isolate electromagnetic radiation;

and a conductor gasket is filled between the second rear shell and the display module to prevent electromagnetic diffraction.

Drawings

FIG. 1 is a schematic diagram of a prior art in-vehicle instrument;

fig. 2 is a schematic structural diagram of a novel vehicle-mounted instrument according to the present invention;

fig. 3 is a schematic structural diagram of the heat sink of the present invention;

in the figure, the position of the upper end of the main shaft,

1. waterproof adhesive tape 2, display screen front cover 3 and FOG module

4. Display screen backlight unit 5, display screen rear cover 6, shock attenuation bubble are cotton

7. Loudspeaker 8, PCB 15, conductor gasket

10. Main control chip heat dissipation silicon 11, power management chip heat dissipation 12, backshell

Film silica gel piece

13. Heat conducting plate 14, fixing bolt 1301 and first bulge

1302. Second projection

21. Lens 22, decorative strip 23 and front cover

24. Pointer 25, first character board 26, second character board

27. Light guide plate 28, LCD display screen 29 and PCB

210. Rear case 211, fixing screw 212, pointer

213. Third character board 214 and support

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of other embodiments without departing from the spirit and scope thereof as defined by the appended claims.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Prior art, as shown in fig. 1:

the existing vehicle-mounted instrument, lens201, ornamental strip 202, front shroud 203, pointer 4, letter board subassembly, light guide plate 207, LCD display screen 208, PCB board 209 and backshell 210 assemble in proper order and fix through set screw 211 and form vehicle-mounted instrument major structure to there is support 214 to support, has following problem:

first, in the existing vehicle-mounted instrument, heat generated by electronic components such as an LCD display screen 8 and a control chip on a PCB in the whole instrument is accelerated to exchange with outside air by forming heat dissipation holes in a rear case 10, so as to achieve a heat dissipation effect, and the front cover 3 and the rear case 10 are made of ABS and PS materials, so as to achieve a light-weight effect of the whole instrument;

secondly, the PCB and the components on the PCB in the vehicle instrument are the main source of EMC problem, the structure for sealing the PCB and the components on the PCB is not arranged in the existing vehicle instrument, especially for the 12.3 inch liquid crystal instrument, in order to ensure the display effect, the frequency of the display main control chip can be as high as nearly hundred MHz or hundreds MHz, the field intensity near the instrument is larger due to the structure without sealing and shielding the magnetic field, and the generated interference seriously affects the hearing enjoyment of surrounding parts, especially radio stations.

The first embodiment is as follows:

the present invention is described in detail with reference to the accompanying drawings, and as shown in fig. 2 to 3, a novel vehicle-mounted instrument includes a rear shell 12, and further includes a display component, a speaker 7, an electric control component and a heat sink, the display component is fastened to the rear shell 12, a space enclosed by the display component and the rear shell is a shielding area, and the electric control component is arranged in the shielding area; the heat dissipation member includes a heat conduction plate 13, a first protrusion 1301 and a second protrusion 1302, the heat conduction plate 13 is fixedly connected to the surface of the rear case 12, the first protrusion 1301 and the second protrusion 1302 are formed on the surface of the heat conduction plate 13 attached to the rear s case 12, the first protrusion 1301 and the second protrusion 1302 respectively penetrate through the rear case 12 and contact the electronic control component, and a grid 16 for increasing the heat dissipation area is formed on the heat conduction plate 13.

In this technical scheme, further, the display module includes display screen backlight unit 4, FOG module 3 and shell, is equipped with display screen backlight unit 4 and FOG module 3 in the shell.

In this technical scheme, further, automatically controlled subassembly is including the PCB board 8 of integrated main control chip, MCU, power management chip, still integrates other control chips on the PCB board 8, and backlight unit 4 is connected with PCB board 8 through first flexible circuit board, FOG module 3 is connected with PCB board 8 through the second flexible circuit board.

In the present technical solution, further, a speaker 7 is disposed on the first surface of the PCB board 8.

In this technical scheme, further, the shell includes display screen front shroud 2 and display screen back shroud 5, and display screen front shroud 2 forms the dust prevention district with the 5 butt joints of display screen back shroud, is equipped with display screen backlight unit 4 and FOG module 3 in the dust prevention district of the inside of shell.

In the technical scheme, further, the surface of the PCB board 8 far away from the display screen rear cover 5 is a first surface; the surface of the PCB board 8 adjacent to the display screen rear cover 5 is a second surface.

In the technical scheme, further, a shock absorption foam 6 is arranged between the display screen rear cover 5 and the loudspeaker 7.

In the technical scheme, further, the first protrusion 1301 penetrates through the rear shell 12 and is connected with a main control chip on the PCB board 8 through a main control chip heat dissipation silica gel sheet 10; the second protrusion 1302 penetrates through the rear case 12 and is connected with the power management chip on the PCB board 8 through the power management chip heat dissipation silicone sheet 11.

In the present solution, further, the gap between the rear case 12 and the PCB board 8 of the display assembly is filled by the conductor pad 15.

In this technical scheme, further, attached waterproof sticky tape 1 that is used for waterproof sealing at the edge of display screen front shroud 2.

In the present technical solution, further, the rear case 12 is fixedly connected with the display module through a plurality of fixing bolts 14.

In the technical scheme, the PCB and the components on the PCB are the main source of EMC (electro magnetic compatibility) problems, especially for a 12.3-inch liquid crystal instrument, in order to ensure the display effect, the frequency of a display main control chip can reach nearly hundred megahertz or hundreds of megahertz, the field intensity nearby the display main control chip is large, and the generated interference seriously influences the hearing enjoyment of surrounding parts, especially radio stations. In order to solve the problem, the back shell 12 of the instrument is fully wrapped by a galvanized iron sheet layer, and the back shell 12 is matched with the display screen front cover 2 and the display screen rear cover 5 of the display assembly to form a good shielding layer. A conductor gasket layer is filled in a gap between the rear shell 12 and the display assembly, and electromagnetic radiation is blocked in a shielding layer formed by matching the rear shell 12 of the instrument and the display screen front cover 2 and the display screen rear cover 5 of the display assembly.

The main control chip and the power management chip on the PCB board 8 are the main sources of heat and electromagnetic interference, and need to be specially processed during design. The main control chip heat dissipation silica gel layer 10 and the power management chip heat dissipation silica gel layer 11 are mainly used for conducting chip heat to the fin to prevent the chip from overheating and losing efficacy, and aiming at the high heating problems of the main control chip and the power management chip which are used for displaying on the PCB 8, the heat dissipation part is added, and the heat dissipation plate 13 of the heat dissipation part is made of cast aluminum materials and is beneficial to heat dissipation. A main control chip heat-conducting silica gel layer 10 and a power management chip heat-conducting silica gel layer 11 are added on a main control chip and a power management chip which are displayed so as to conduct the heat of the chips to a heat dissipation plate 13 made of cast aluminum materials, and the heat dissipation plate 13 extends to the back of a rear shell 12 of the instrument and is made into a grid shape so as to increase the heat dissipation area. And the cast aluminum module and the rear shell are fixed by riveting. The rear shell and the display module are fixed by bolts.

Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.

Claims

1. A novel vehicle-mounted instrument comprises a rear shell (12) and is characterized by further comprising a display component, a loudspeaker (7), an electric control component and a radiating piece, wherein the display component is fastened with the rear shell (12), a space defined by the display component and the rear shell is a shielding area, and the electric control component is arranged in the shielding area;

the heat dissipation piece comprises a heat conduction plate (13), a first protrusion (1301) and a second protrusion (1302), the heat conduction plate (13) is fixedly connected with the surface of the rear shell (12), the first protrusion (1301) and the second protrusion (1302) are attached to the surface of the heat conduction plate (13) of the rear shell (12), the first protrusion (1301) and the second protrusion (1302) penetrate through the rear shell (12) respectively and contact the electric control assembly, and a grid (16) used for increasing the heat dissipation area is formed on the heat conduction plate (13).

2. The novel vehicle-mounted instrument according to claim 1, wherein the display assembly comprises a display screen backlight module (4), an FOG module (3) and a shell, the display screen backlight module (4) and the FOG module (3) are arranged in the shell, and the FOG module (3) is connected with the display screen backlight module (4) in a clamping manner.

3. The novel vehicle-mounted instrument according to claim 2, wherein the electric control assembly comprises a PCB (8) integrating a main control chip, an MCU and a power management chip, the backlight module (4) is connected with the PCB (8) through a first flexible circuit board, and the FOG module (3) is connected with the PCB (8) through a second flexible circuit board.

4. A novel vehicle instrument according to claim 3, characterized in that the first surface of the PCB board (8) is provided with a speaker (7).

5. The novel vehicle-mounted instrument according to claim 4, wherein the housing comprises a front display screen cover (2) and a rear display screen cover (5), the front display screen cover (2) and the rear display screen cover (5) are butted to form a dustproof area, and the display screen backlight module (4) and the FOG module (3) are arranged in the dustproof area inside the housing.

6. A novel vehicle instrument according to claim 5, characterized in that the surface of the PCB (8) far away from the display screen rear cover (5) is a first surface; the surface of the PCB (8) close to the display screen rear cover (5) is a second surface.

7. A novel vehicle-mounted instrument according to claim 6, characterized in that a shock absorption foam (6) is arranged between the display screen rear cover (5) and the loudspeaker (7).

8. The novel vehicle-mounted instrument according to claim 1, characterized in that the first protrusion (1301) penetrates through the rear shell (12) and is connected with a main control chip on the PCB (8) through a main control chip heat dissipation silicon sheet (10); the second bump (1302) penetrates through the rear shell (12) and is connected with a power management chip on the PCB (8) through a power management chip heat dissipation silicon sheet (11).

9. A new vehicle instrument according to claim 3, characterized in that the gap between the back cover (12) and the PCB board (8) of the display module is filled by conductor spacers (15).

10. A novel vehicle-mounted instrument according to claim 5, characterized in that a waterproof adhesive tape (1) for sealing and waterproofing is attached to the edge of the display screen front cover (2).