WO2017198218A1 - 抬头显示器、车用抬头显示器设备及其显示屏 - Google Patents

抬头显示器、车用抬头显示器设备及其显示屏 Download PDF

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Publication number
WO2017198218A1
WO2017198218A1 PCT/CN2017/085096 CN2017085096W WO2017198218A1 WO 2017198218 A1 WO2017198218 A1 WO 2017198218A1 CN 2017085096 W CN2017085096 W CN 2017085096W WO 2017198218 A1 WO2017198218 A1 WO 2017198218A1
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WO
WIPO (PCT)
Prior art keywords
display
display screen
head
light source
dot matrix
Prior art date
Application number
PCT/CN2017/085096
Other languages
English (en)
French (fr)
Inventor
樊强
Original Assignee
樊强
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201610339925.8A external-priority patent/CN105866951A/zh
Priority claimed from CN201620944110.8U external-priority patent/CN206049535U/zh
Application filed by 樊强 filed Critical 樊强
Publication of WO2017198218A1 publication Critical patent/WO2017198218A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • 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
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
    • 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

Definitions

  • the invention relates to the technical field of vehicle head-up displays, and in particular to a head-up display.
  • Head Up Display is a kind of glass imaging that projects the main information required by the driver in front of the field of view by means of icons or text, so that the driver can pay attention to the driving environment and related driving at the same time.
  • the information can prevent the driver from shifting the line of sight due to viewing the driving data during driving, so that the attention to the road ahead is dispersed, and the safety of the driving can be effectively increased.
  • the head-up display for the vehicle can generally be used in a car or a train.
  • the conventional HUD product displays the image in the form of a projection, that is, a projection lens is arranged, the lens transmits the image light to the projection screen, and the image light is reflected by the projection screen to provide the source image, and the source image is transmitted to the front and then transparent.
  • the front reflection of the glass reflective mirror is a mirror image, and the mirror image enters the driver's field of view, so that the driver can view the driving information in the mirror while driving, and can also view the road surface in front of the mirror.
  • the vehicle head-up display requires a lens to project a source image for reflection, and a certain distance between the lens and the projection screen is required to present a source image of a target size, so that the head-up display occupies a large space inside the vehicle.
  • the existing head-up display also directly uses an electronic screen as a display screen.
  • the electronic display screen adopts an LCD or an LED screen, etc., and the power consumption is large when displaying, and the heat is generated more, in order to better heat the general display part.
  • the volume is set larger to facilitate heat dissipation in the display section.
  • the size of its larger display also occupies more space inside the car, which is not conducive to the promotion of the head-up display.
  • Independent inverted mirrors generally need to be placed in front of the driver's cab and under the windshield.
  • the car's bridge is not completely horizontal, it usually has a certain degree of curvature.
  • the curves of different models are not the same, so the color is reversed.
  • the mirror device tends to be easily shaken or prone to displacement, which is not conducive to the driver viewing the image.
  • the present invention provides a display screen for a head-up display, comprising an electronic display screen and a housing, the electronic display screen being disposed on one side of the housing and connected to the housing to form an exterior of the display screen of the head-up display, the housing There are a plurality of vents, the electronic display screen comprises a liquid crystal screen and an LED dot matrix light source panel, wherein the LED dot matrix light source panel is provided with a plurality of LED lights, and between the LED lights on the LED dot matrix light source plate At least one heat dissipation hole is disposed at the gap; the heat dissipation hole penetrates the LED dot matrix light source plate for heat dissipation of the display screen of the head display.
  • the vent is divided into an air inlet and an air outlet, wherein the air inlet, the heat dissipation hole and the air outlet jointly form a heat dissipation channel.
  • the utility model further comprises a fan, wherein the fan is arranged on the electronic display screen, and the fan is used for rotating to drive the air to flow to form a heat-dissipating air flow.
  • the electronic display screen and the fan are electrically connected to a control board, and the liquid crystal screen is configured to display driving information under the control of the control board, and the fan is used in the office when the electronic display is working. Rotate under the control of the control board.
  • the fan is disposed on the LED dot matrix light source plate where the heat dissipation hole is located, or the fan is disposed on the LED dot matrix light source plate at the corresponding position of the ventilation hole.
  • a heat sink is further disposed, and the heat sink is disposed on one or both sides or three sides of the fan or on the LED dot matrix light source board.
  • the air inlet is disposed on one side of the outer casing, and the air outlet is disposed on the other side of the outer casing.
  • the air inlet is disposed on a first side of the back of the outer casing, and correspondingly, the air outlet is disposed on a second side of the back of the outer casing, and the first side and the second side are opposite Two opposite sides of the center of the back of the housing.
  • At least one heat dissipation hole is located at a center position of the LED dot matrix light source plate.
  • the method further includes an atomizing plate disposed between the liquid crystal panel and the LED dot matrix light source panel.
  • one side of the atomizing plate is attached to the liquid crystal screen, and the other side is 6 mm or more away from the LED dot matrix light source plate.
  • the overall thickness of the exterior of the display screen of the head-up display is 12 mm to 18 mm.
  • the present invention also provides a head-up display comprising a display screen as described above, further comprising a control unit, wherein the control unit is provided with a control board, the control board is electrically connected to the electronic display screen, and the control The portion is fixedly or pivotally connected to the exterior of the outer casing or the control portion is fixedly disposed within the outer casing.
  • the outer back surface of the outer casing is provided with a convex portion, and the convex portion is provided with a connecting portion, and the control portion is fixedly connected or pivotally connected to the outer casing through the connecting portion.
  • the convex portion is further provided with an air inlet and an air outlet, the air inlet is located at one side of the convex portion, and the air outlet is located at the other side of the convex portion.
  • the present invention also provides a head-up display device for a vehicle, comprising a display and a mirror device for providing a source image projected to the inverse mirror device, wherein the display comprises a display as described above a screen, the inverse mirror device includes a reverse mirror and a support portion connected thereto, the support portion having an adaptively adjusted curvature base for matching the curvature of the support surface on which the inverse mirror device is placed .
  • the support portion further includes a bracket, the upper portion of the bracket is connected to the inverse color mirror, and the lower portion is fixed to the upper surface of the base; wherein the bracket includes a plurality of subracks stacked on top of each other The subracks are detachably connected.
  • the upper portion of the bracket is provided with a fixing portion for fixing with a lower portion of the reflecting mirror, wherein the fixing portion is rotatably connected with an upper portion of the bracket.
  • the base comprises a plurality of sub-blocks, the plurality of sub-blocks are tightly coupled with each other; or the base is an integral structure having a curvature in cooperation with a car bridge.
  • the adjacent two sub-blocks respectively have an embedding portion and a groove, and the embedding portion cooperates with the groove so that the adjacent sub-blocks are tightly coupled and can be opposite Rotating;
  • the material of the base is PPU or rubber, and the hardness is 40 to 70 degrees.
  • an adhesive layer is disposed on a bottom surface of the base that is in contact with the support surface.
  • the display screen of the head-up display provided by the invention has a hole in the LED dot matrix light source plate of the display screen, so that an effective air flow path can be formed between the liquid crystal screen and the LED dot matrix light source plate, and the function of the fan is used to make the display heat dissipation
  • the performance is good and the volume is small, which can better meet the needs of the entire head-up display requiring a small volume and presenting a large source image.
  • the opening method does not require special special improvement of the material and process of the LED dot matrix light source panel or the liquid crystal panel to improve the heat resistance performance thereof, and the prior art can effectively dissipate the display screen and effectively improve the lifting head.
  • the service life and display effect of the display is not require special special improvement of the material and process of the LED dot matrix light source panel or the liquid crystal panel to improve the heat resistance performance thereof, and the prior art can effectively dissipate the display screen and effectively improve the lifting head.
  • the base of the inverse mirror device can be adapted to different support surfaces, so that the inverted mirror device can be set on different types of automobile bridges; the height of the bracket can be adjusted to facilitate height adjustment according to different driver needs; the structure is simple and easy to meet needs Use and adjust the base curvature and the height of the inverted mirror; the display device with the inverted mirror device has a wider range of applications.
  • FIG. 1 is a schematic overall structural view of a head-up display according to Embodiment 1 of the present invention.
  • FIG. 2 is a front elevational view of a portion of a display screen of a head-up display according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic diagram showing the internal composition of a display portion of a head-up display according to Embodiment 1 of the present invention.
  • FIG. 4 is a front view of a LED dot matrix light source panel of a head-up display according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic diagram showing the exterior rear portion of a display screen of a head-up display according to Embodiment 1 of the present invention.
  • FIG. 6 is a front elevational view showing a LED dot matrix light source panel of a head-up display according to Embodiment 3 of the present invention.
  • FIG. 7 is a schematic diagram showing the exterior rear side of a display screen of a head-up display according to Embodiment 3 of the present invention.
  • FIG. 8 is a schematic structural diagram of a screen portion of a display screen of a head-up display according to Embodiment 4 of the present invention.
  • FIG. 9 is a schematic overall structural diagram of a head-up display according to Embodiment 5 of the present invention.
  • FIG. 10 is a schematic diagram of use of a head-up display device according to a preferred embodiment of the present invention.
  • Figure 11 is a block diagram showing an overall structure of a reflecting mirror device according to a preferred embodiment of the present invention.
  • Figure 12 is a structural view showing a portion of a bracket of the inverse mirror device according to a preferred embodiment of the present invention.
  • Figure 13 is a bottom plan view of a reflecting mirror device according to a preferred embodiment of the present invention.
  • Figure 14 is a rear elevational view of the inverse mirror device provided by a preferred embodiment of the present invention.
  • Figure 15 is a structural view of a reflecting mirror device according to another preferred embodiment of the present invention.
  • the display screen 10 of the head-up display includes an electronic display screen and a casing, wherein the electronic display screen comprises a liquid crystal screen 11 and an LED dot matrix light source panel 12 (the structure can be referred to 4 or FIG. 6), the electronic display screen is disposed on one side of the outer casing 14 and connected to the outer casing 14 to form an external overall structure of the display screen portion of the head-up display, and accordingly, the liquid crystal panel 11 cooperates with the outer casing 14 to form an external structure of the display screen, and
  • the LED dot matrix light source panel 12 is located in the display portion of the liquid crystal panel 11 and the casing, that is, it is located inside the display panel.
  • the casing 14 is provided with a plurality of vents, and the vents are divided into an air inlet and an air outlet (refer to the form of the vents 141 to 143 of FIG. 5 or FIG. 7).
  • the LED dot matrix light source panel 12 is provided with a plurality of LED lamps, and at least one of the heat dissipation holes 122 is disposed at a gap between the LED lamps on the LED dot matrix light source panel 12.
  • the heat dissipation hole 122 penetrates the LED dot matrix light source plate for heat dissipation of the display screen of the head up display. At this time, the airflow inside the display screen on both sides of the heat dissipation hole 122 can be exchanged through the heat dissipation holes. And with the vent on the outer casing can achieve better air flow and improve heat dissipation.
  • the working principle of the display screen 10 is: the liquid crystal panel 11 is used for displaying driving information, and the LED dot matrix light source panel 12 is used to provide an adjustable backlight for the liquid crystal panel 11, so that the display screen is suitable for different brightness environments. Display driving information.
  • the vents on the outer casing cooperate with the louvers on the LED dot matrix light source panel 12 located inside the display screen to form an air passage for the airflow to dissipate heat.
  • the display screen of this embodiment has the following working forms when performing heat dissipation:
  • the heated air can flow through the vent to exchange with the outside air. At this time, when the air on one side of the LED dot matrix light source flows, the air heated on the other side can flow through the vent hole.
  • the housing carried and flowing out of the display screen for heat dissipation;
  • the air inlet and the air outlet are located on the outer side of the LED dot matrix light source board.
  • the air flows a part of the air enters the other side of the LED dot matrix light source board through the heat dissipation hole, and then returns to the original side through the heat dissipation hole, and then After the air outlet exits the display screen to achieve heat dissipation, the number of heat dissipation holes can be multiple.
  • the working forms may exist at the same time according to the actual setting mode of the display screen and different working states, or only some combinations or ones of the working forms exist.
  • the display screen can realize the flow exchange of air in different areas inside the display screen 10 by setting the heat dissipation holes, and can also speed up the flow and achieve better heat dissipation. In this way, the distance between the LCD screen of the display screen and the LED dot matrix light source panel 12 and the LED dot matrix light source panel 12 and the outer casing can be reduced as much as possible, thereby reducing the overall volume of the display screen without causing internal Too small a space causes heat to accumulate faster and affects the working life of the display.
  • the air inlet, the heat dissipation hole and the air outlet jointly form a heat dissipation channel.
  • the specific working form of the heat dissipation channel at this time may be one of the above a), c) and d), or different combinations of the three working forms.
  • the fan is further disposed on the electronic display screen, and the fan is used to rotate to drive the air to form a heat-dissipating air flow, thereby speeding the flow speed of the heat-dissipating airflow and improving the heat dissipation efficiency.
  • the electronic display screen and the fan are electrically connected to a control board, and the liquid crystal screen is used for displaying driving information under the control of the control board.
  • the fan is used for rotating under the control of the control board.
  • the head-up display provided by the embodiment includes a display screen 10 , a control unit 20 and a buckle 30 .
  • the control unit 20 is connected to the display screen 10 through a connection portion 40 , and the buckle 30 can make the head-up display It can be hung on a car sun visor or other hangable location in the car's cab.
  • the connecting portion 40 in this embodiment is a rotating shaft, and the control portion 20 is pivotally connected to the outer casing of the display screen 10 through the rotating shaft.
  • the control unit 20 is provided with a control board, which may be a circuit board integrated with the control chip for controlling the operation of the display screen 10 to provide a source image for display.
  • the display screen 10 in this embodiment includes a liquid crystal screen 11 , an LED dot matrix light source panel 12 , a fan 13 , a casing 14 and a heat sink 15 , wherein the liquid crystal screen 11 and the LED point are arranged.
  • the array light source panel 12 constitutes an electronic display screen which is disposed on the front side of the outer casing 14 and is fixedly coupled to the outer casing 14 to form an integral exterior of the head-up display.
  • the fan 13 is provided on a portion of the electronic display screen located inside the casing 14.
  • the heat sink 15 is disposed on two sides of the fan on the back of the electronic display screen.
  • the heat sink 15 is a hollow structure made of metal material, which can quickly collect the heat generated by the LED dot matrix light source plate, and heat the air where the fan 13 is located, thereby working.
  • the fan 13 at the time takes away the heated air to further improve the heat dissipation efficiency.
  • the liquid crystal panel 11, the LED dot matrix light source panel 12, and the fan 13 are electrically connected to a control board in the control unit 20.
  • the liquid crystal panel 11 is configured to display driving information under the control of the control board, and the LED dot matrix light source board 12 is used to provide backlighting for the liquid crystal panel 11 so that the source image provided by the display screen 10 can reach the target brightness.
  • the side of the fan 13 is further provided with an opening 131 which cooperates with the air inlet and outlet to facilitate the flow of air in the casing.
  • the LED dot matrix light source panel 12 provided in this embodiment has a plurality of LED lamps uniformly arranged, and gaps are left between the LED lamps.
  • a heat dissipation hole 122 is defined, and two power supply connection points 123 are disposed at a corner of the LED dot matrix light source plate 12.
  • the heat dissipation hole 122 is composed of three shaped holes, specifically including two inverted "T" holes and one as shown in FIG. The hole and the heat dissipation hole 122 are formed on the substrate between the LED lattices, so that the substrate connecting the LED lamp beads is kept continuous so as not to damage the stability between the LED lamp beads fixed by the substrate, and does not damage the LED lamp beads.
  • the printed circuit of the power supply or the circuit trace of the layout can simultaneously make the LED dot matrix light source plate 12 have a heat dissipation hole through which the airflow can flow.
  • the number of the fans 13 in the present embodiment is one, and is disposed at a position corresponding to the heat dissipation holes 122 on the back surface of the LED dot matrix light source panel 12.
  • a plurality of vents are defined in the back surface of the outer casing 14 of the present embodiment, and the vents are divided into an air inlet and an air outlet.
  • the air inlet 141 and the air inlet 142 in this embodiment are disposed on the lower side of the back surface of the outer casing.
  • the air outlet 143 is disposed on the upper side of the back surface of the outer casing opposite to the side where the air inlets 141, 142 are located.
  • the air outlet 143 of the present embodiment is disposed at a position corresponding to the position between the liquid crystal panel 11 and the LED dot matrix light source panel 12.
  • the vent of the embodiment is disposed on the back surface to prevent light leakage from the vent opening on the side of the outer casing, so that the image display effect at the edge of the liquid crystal screen is not poorly imaged due to darkening of the backlight.
  • the arrangement of the vents can effectively improve the display effect of the display screen, and at the same time, the overall size of the display screen can be made smaller, because when the side does not need to open the hole for the airflow, no light leakage occurs, and the outer casing and the liquid crystal screen can be used at this time.
  • the edge of the joint is set as narrow as possible, and even the periphery of the liquid crystal screen can be borderless, so that the effective display area of the front surface of the entire display screen is larger, and it is not necessary to increase the frame portion in order to achieve the target size display area while satisfying good heat dissipation.
  • the control board controls the LCD screen 11 to display driving information, and controls the LED dot matrix light source board 12 to provide backlighting, while controlling the rotation of the fan so that the inside of the outer casing 14 of the display screen 10 forms a heat-dissipating air flow, and the external air passes from the air inlet 141.
  • the 142 enters the outer casing 14, passes through the gap between the outer casing 14 and the LED dot matrix light source plate 12, and then enters the gap between the liquid crystal panel 11 and the LED dot matrix light source panel 12 through the heat dissipation hole, and finally flows out from the air outlet 143.
  • the flowing air is heated by the heat generated by the LED dot matrix light source plate 12 and/or the heat sink 15 when passing through the above-mentioned gap, thereby taking away the heat generated in the display screen 10, and avoiding the heat generated when the head-up display is operated for a long time. A situation that affects the service life and work efficiency.
  • the fan in this embodiment can be used with a side blower fan, which can be better matched with the back surface of the LED dot matrix light source plate 12, and is matched with the heat dissipation hole to guide the airflow from the air inlet to the air outlet.
  • a side blower fan which can be better matched with the back surface of the LED dot matrix light source plate 12, and is matched with the heat dissipation hole to guide the airflow from the air inlet to the air outlet.
  • the entire display screen forms an air flow path, and the display screen is satisfied.
  • the body volume can form an effective heat dissipation path under the condition of being small, and the heat dissipation of the display is better, which can effectively improve the working effect and service life of the display.
  • the heat dissipation holes 122 are formed on the substrate between the LED lattices, and the heat dissipation holes formed by the three holes are located at the center of the entire LED dot matrix light source plate 12.
  • the outer casing 14 in the embodiment has a convex portion, and the convex portion is provided with a connecting portion 40 through which the display screen 10 is fixedly connected or pivotally connected to the control portion 20 .
  • the arrangement of the bosses facilitates the provision of a connection for the connection between the display screen and the control unit.
  • the upper portion of the convex portion is provided with an air outlet 143, and the lower portion is provided with two air inlets 141 and 142.
  • the structure of the air inlet and the air outlet can make full use of the convex structure that the outer casing 14 needs to be connected with the control portion 20, and the air inlet and the air outlet are provided on the convex structure, so that the space for the airflow inside the outer casing 14 is larger. It is also closer to the position of the fan, and the air inlet and the air outlet are all arranged on the back of the casing to avoid light leakage, which also makes the airflow more smooth and improves the heat dissipation effect.
  • the connecting portion may also be a hinge or a snap portion, as long as it satisfies the connection between the control portion and the display screen and allows both to freely rotate.
  • the buckle may be omitted, and the control portion and the display screen are integrated into an integrated structure, that is, the control portion is also disposed in the outer casing of the display screen, but the control portion needs to be fixedly disposed on the outer casing of the display screen.
  • the head-up display can be directly placed on the driver's cab by means of a base, and the display screen and the base are connected by a rotating shaft or other forms of connection, thereby facilitating adjustment of the angle of the display, thereby adjusting the transmission of the source image. direction.
  • the fan is disposed on the back surface of the LED dot matrix light source plate at the corresponding position of the vent, thereby avoiding blocking the light of the LED lamp bead, and directly forming the airflow into the ventilating air.
  • the number of fans can be set to 2 or more. Those skilled in the art can freely select the position of the fan as the heat dissipation hole or each vent, as long as the good heat dissipation effect is satisfied.
  • the heat sink may be a plurality of metal sheets arranged in parallel, which may be disposed on one side or three sides of the fan, and may be provided by those skilled in the art according to the number of fans and the space inside the display screen and heat dissipation. Appropriate modifications and adaptations may be made in light of the above teachings and are intended to be included within the scope of the invention.
  • the aperture type of the aperture can occupy as much space as possible between adjacent two or more LED lamp beads to provide the largest possible hole for air circulation, but can not affect the wire and LED lamp bead connected to the LED lamp bead. Original location.
  • a person skilled in the art can set the heat dissipation hole as one or more combinations of the above-mentioned hole types as needed, and can also be used on the LED dot matrix light source plate in addition to the combination of the plurality of holes in the first embodiment and the second embodiment.
  • a regular hole or a plurality of uniformly arranged and regular holes are provided, which satisfy the circulation of the airflow inside the display without affecting the lighting and arrangement of the LED beads.
  • the hole When the heat dissipation hole is a ".” type hole, the hole may be " ⁇ ", “ ⁇ ", “ ⁇ ” or other regular or irregular shape, or a combination of a plurality of holes of the shape, as long as it satisfies
  • the substrate on the gap between the LED lamp beads is opened without affecting the lighting and arrangement of the LED lamp beads.
  • At least one heat dissipation hole is located at a center position of the LED dot matrix light source plate.
  • the positional relationship between the arrangement of the plurality of shaped holes or the same holes is not limited to the above embodiment, and various modifications made by the person skilled in the art according to the above disclosure regarding the arrangement of the heat dissipation holes should be It is included in the scope of the invention.
  • This embodiment can be taken as a preferred embodiment of the above embodiment, or can be a separate embodiment. details as follows:
  • the screen portion of the display screen of the head-up display provided in this embodiment includes a liquid crystal panel 11, an LED dot matrix light source panel 12, and a uniform light-insulating device.
  • the uniform light-insulating device in this embodiment is a fog.
  • the plate 16 is disposed between the liquid crystal panel 11 and the LED dot matrix light source panel 12. Moreover, the distance between the atomizing plate 16 and the liquid crystal panel 11 is smaller than the distance between the atomizing plate 16 and the LED dot matrix light source plate 12.
  • the light emitted by the LED dot matrix light source can be effectively atomized, thereby providing a more uniform backlight for the image displayed on the liquid crystal screen, effectively shortening the liquid crystal.
  • the distance between the screen and the LED dot matrix light source plate also prevents the user from seeing or being able to feel the presence of the dot matrix of the LED lamp bead.
  • the atomizing plate is not set, although the distance between the liquid crystal screen and the LED dot matrix light source plate is far enough, the backlight can be made uniform, but this method needs to make the distance between the liquid crystal screen and the LED dot matrix light source plate far apart.
  • a plurality of LED lights are disposed on the LED dot matrix light source panel 12, and at least one heat dissipation hole 122 is disposed in a gap between the LED lamps on the LED dot matrix light source panel 12.
  • the outer casing of the display screen is provided with a venting opening, and the venting hole and the venting opening cooperate to form a passage of air flowing in the inner space of the display screen, which can effectively supply the internal air heated when the display screen works, thereby improving the heat dissipation effect.
  • one side of the atomizing plate 16 is attached to the liquid crystal panel 11, and the other side thereof is separated from the LED dot matrix light source plate 12 by any one of 6 mm or more.
  • the uniform light-insulating device may be a device having an atomizing plate, a homogenizing film, a polarizing film, a brightness enhancing film, a heat insulating film, etc., having uniform light characteristics or heat insulating properties, such that The uniform light insulation device can better illuminate the LED dot matrix light source and achieve good heat insulation effect.
  • the thickness of the atomizing plate is 1.5 mm to 2 mm, and the thickness value of the atomizing plate in the range can be selected according to requirements in the field, specifically according to the atomization degree of the atomizing plate, the liquid crystal screen.
  • the specification parameters are selected according to the distance between the LED dot matrix light source panel and the specifications of the actually selected LED dot matrix light source panel.
  • the overall thickness of the external display of the head-up display is 12 mm to 18 mm.
  • the thickness of the display of the head-up display is effectively reduced, thereby reducing the overall size of the head-up display.
  • this embodiment is a preferred embodiment of the first or second embodiment.
  • the other content is the same as the first or second embodiment except that the following parts are different, and the details are as follows:
  • the head-up display provided in this embodiment includes a display screen 10, a control unit 20, and a buckle 30.
  • the control unit 20 and the display screen 10 are fixedly connected by the connecting portion 40.
  • the connecting portion 40 is an extension of the housing of the display screen 10, and is integrally connected with the control portion 20 such that the control portion 20 and the outer casing of the display screen 10 are fixedly connected by the connecting portion 40.
  • the outer casing of the control portion and the outer casing of the display screen can be directly integrated, without the connection of the connecting portion 40, making the structure more stable.
  • the buckle may not be provided.
  • the display screen portion of the head-up display provided by the present invention can be set as the display screen can be rotated relative to the control portion as needed, or can be set such that the display screen is not rotatable relative to the control portion, or the control board is disposed in the housing in which the display screen is located.
  • the present embodiment provides a vehicle head-up display device including a color-changing mirror device 200 and a display 100 for a vehicle head-up display.
  • the display 100 when the heads up display device is in operation, the display 100 is used to provide a source image projected to the inverse mirror device 200, and the inverse mirror device 200 is configured to reflect the above-mentioned source image to cause light to enter Human eyes.
  • the display 100 is disposed above the cab, the display 100 can be hung on the sun visor 300, and the inverse mirror device 200 is disposed on the bridge below the windshield 400 of the cab for pairing The image from the display 100 is reflected while the driver can see the road ahead in the direction through the mirror device.
  • the display 100 in this embodiment is a display having the display screen 10 of the above embodiments, and the screen of the display screen 10 can be set as an LCD screen, an LED screen or a touchable liquid crystal screen, etc., to perform source image.
  • the display can select a specific implementation form of the display as needed by those skilled in the art.
  • the inverse mirror device 200 used in the embodiment is a transparent curved mirror for placing on the driver's cab, which does not affect the driver's line of sight, and the reflected source image thereof can be provided to the driver.
  • the curved inverse mirror can enlarge the source image to a certain extent when the volume is limited, so that the driver can see the reflected image more clearly.
  • the inverse color mirror device 200 in this embodiment specifically includes a reflective mirror 210 and a supporting portion connected thereto, and the supporting portion has a base 220 capable of adaptively adjusting the bending degree for The bending of the support surface on which the inverse mirror device is placed, such as the bridge in the cab of the car, is matched.
  • the support portion further includes a bracket 230.
  • the upper portion of the bracket 230 is connected to the inverse mirror 210, and the lower portion of the bracket 230 is fixed to the upper surface of the base 220.
  • the upper portion of the bracket 230 is further provided with a fixing portion 231 for fixing to the lower portion of the reflecting mirror 210.
  • the fixing portion 231 is rotatably coupled to the upper portion of the bracket 230.
  • the fixing portion 231 includes two clips 231a, 231b (231b is the same as 231a, only 231a is shown in FIG. 12), and the two clips 231a, 231b cooperate with each other for the inverse mirror 210 is fixed by clamping, wherein the bottom of the reflecting mirror 210 is disposed between the two clips 231a, 231b, and the two clips 231a, 231b are screwed and fixed by a plurality of screws; in addition, the two clips 231a, 231b are further The shaft 232 is connected to the shaft 232.
  • the two ends of the shaft are fixed to the two clips 231a and 231b by a screw structure, and the middle portion of the shaft 232 passes through the shaft hole provided in the upper portion of the bracket 230, and the shaft 232 and the shaft hole are tightly coupled with each other. .
  • the middle portion of the clip 231a, 231b is provided with a groove, and the upper portion of the bracket is located in the recess, so that the clip can be fixed with the rotating shaft of the upper portion of the bracket, and the clip can be opposite to the bracket Turn.
  • This structure allows the rotating shaft 232 to rotate in the shaft hole, so that the driver can adjust the reflection angle of the reflecting mirror 210 as needed, which is convenient for the driver.
  • the inverse mirror 210 is not slid relative to the bracket 230, avoiding excessive flexibility when the mirror 210 is rotated, or the mirror 210 cannot be fixed at a selected angle with respect to the bracket 230.
  • the bracket in this embodiment further includes two subracks stacked on top of each other, and the two subracks are detachably connected.
  • the bracket may include one or more subracks, wherein, in the case of one subrack, the upper subrack of the two subracks is used to set the shaft hole to be connected to the clip.
  • the connection to the inverse mirror is realized, and the bottom of the lowermost subrack is provided with a connection portion connected to the base, or is directly fixedly connected to the base or integrally connected.
  • the other sub-frames may have the same structure as each other, and the sub-frames and the sub-frames are detachably connected, such as recesses and protrusions with interference fits for fixed connection.
  • a person skilled in the art can set the connection manner between the sub-frames as needed, which can be freely disassembled between the sub-frame and the sub-frame.
  • the bracket can facilitate the driver to remove a part of the sub-frame as needed, thereby adjusting the height of the bracket to adjust the height of the inverse mirror.
  • the base 220 includes sub-blocks 220a-220g, and the sub-blocks 220a-220g are tightly coupled.
  • the sub-blocks 220a-220g of the base are provided with an adhesive layer 221 on the bottom surface of the car bridge that is in contact with the support surface of the mirror device.
  • the number of sub-blocks in the embodiment is seven, and the sub-block 220d is located at an intermediate position, and two sets of sub-blocks are respectively 220a, 220b, 220c and 220e, 220f, 220g.
  • the sub-block 220d is for connecting to the bracket such that the base and the bracket together form a support portion supporting the inverse mirror.
  • the base 220 is configured as a plurality of sub-blocks to make the The mutual rotation between the sub-blocks allows the bottom of the base 220 to freely adjust the curvature of the base according to the curvature of the supporting surface on which the base 220 is located.
  • This structure is similar to the chain structure, but between the sub-blocks and the sub-blocks.
  • the tight mating connection allows the sub-blocks to rotate relative to each other, but can not be flexibly rotated, so that a certain relative position can be maintained between the adjacent sub-blocks and the sub-blocks, which facilitates the fixing of the base and the function of supporting the inverse mirror.
  • the adhesive layer 221 is disposed such that the position of the base and the bridge can be relatively fixed to avoid relative positional sliding during driving. Wherein, the adhesiveness of the adhesive layer here should be such that the base and the support surface are fixed to each other, and the driver is separated from the support surface as needed.
  • the adjacent two sub-blocks respectively have an embedding portion and a groove, wherein the embedding portion has a circular cross section, and correspondingly, the groove cross-section is also circular, and the embedding portion and the groove cooperate to make adjacent The sub-blocks are tightly coupled and relatively rotatable.
  • the base 220 is a unitary structure having a curvature that cooperates with the cab of the automobile.
  • the material of the base of the overall structure can be set to a soft material having a certain hardness such as PPU or rubber as needed, so as to be directly attached to the surface of the automobile bridge, and the hardness thereof is 40 to 70 degrees.
  • the form of the fixing portion is not limited to the clip, and the inverted mirror may be perforated and fixed in the fixing portion by screws and a fixing plate to be fixed to the bracket.
  • the height adjustment of the bracket can also realize the specific structure of the bracket by means of a telescopic support rod.
  • the number of subracks and sub-blocks can be freely set as needed by those skilled in the art, and various modifications made by those skilled in the art based on the above embodiments are included in the scope of the present invention.

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Abstract

一种抬头显示器(100)、车用抬头显示器设备及其显示屏(10)，显示屏(10)包括电子显示屏、风扇(13)及外壳(14)，外壳(14)上设有若干通风口，风扇(13)设于电子显示屏上，电子显示屏及风扇(13)与一控制主板电连接，电子显示屏包括液晶屏(11)及LED点阵光源板(12)，液晶屏(11)用于显示行车信息，LED点阵光源板(12)用于提供背光，风扇(13)用于形成散热的空气流，LED点阵光源板(12)的LED灯之间的空隙处设有散热孔(122)。该显示屏(10)通过散热孔(122)配合通风孔，形成散热通路，散热性能良好，且体积较小。该车用抬头显示器设备，包括显示器(100)及反色镜装置(200)，显示器(100)具有上述的显示屏(10)，反色镜装置(200)具有一自适应调整弯曲度的底座(220)，可置于不同类型的驾驶台上，使车用抬头显示器设备适应性更好。

Description

抬头显示器、车用抬头显示器设备及其显示屏 技术领域
本发明涉及车用抬头显示器技术领域，特别涉及一种抬头显示器。
背景技术
车用抬头显示器(Head Up Display-HUD)是一种利用玻璃成像，将驾驶员所需要的主要信息以图标或文字的方式投射在其视野前方，使得驾驶员可以同时关注驾车环境和相关的驾驶信息，避免驾驶员在驾驶过程中因查看行驶数据而偏移视线导致对前方路况的注意力被分散，可以有效地增加行车的安全性，车用抬头显示器一般可在汽车或火车内使用。
目前普通的HUD产品在结构上采用投影的形式显示图像，即配置有投影镜头，镜头将图像光线发送至投影屏幕上，由投影屏幕反射图像光线以提供源图像，源图像传输至前方再通过透明玻璃材质的反色镜的正面反射呈一镜像，镜像再进入驾驶员视野内，使得驾驶员即可以开车的同时查看镜像内的行车信息，也可以同时查看反色镜前方的路面情况。
但这种车用抬头显示器需要镜头进行投影后再提供供反射的源图像，镜头及投影屏幕间需要一定的距离才能呈现目标大小的源图像，使得抬头显示器占用车内空间较大。现有的抬头显示器也有直接采用电子屏作为显示屏的，这种电子显示屏采用LCD或LED屏等，进行显示时功耗较大，产生热量较多，为了较好的散热一般显示屏部分的体积设置较大，以利于显示屏部分的散热。但其较大的显示屏的体积同样占用较多的车内空间，不利于抬头显示器的推广。
独立的反色镜一般需要置于汽车驾驶台前方，挡风玻璃下方，这种情况下由于汽车驾驶台并非完全水平的平面，一般具有一定的弧度，不同的车型弧度并不相同，因而反色镜装置往往易于晃动，或易于发生位移，不利于驾驶员查看图像。
发明内容
本发明的目的在于提供一种抬头显示器，以解决现有的抬头显示器采用电子屏时散热较差、体积较大的问题。
为实现上述目的，本发明提供了一种抬头显示器的显示屏，包括电子显示屏及外壳，所述电子显示屏设于外壳的一侧与外壳连接构成抬头显示器的显示屏外部整体，所述外壳上设有若干通风口，所述电子显示屏包括液晶屏及LED点阵光源板，所述LED点阵光源板上设有若干LED灯，所述LED点阵光源板上的LED灯之间的空隙处设有至少一个散热孔；所述散热孔贯通所述LED点阵光源板，用于抬头显示器的显示屏的散热。
较佳地，所述通风口分为进风口以及出风口，其中所述进风口、散热孔以及出风口共同形成一散热通道。
较佳地，还包括风扇，所述风扇设于所述电子显示屏上，所述风扇用于转动以带动空气流动形成散热的空气流。
较佳地，所述电子显示屏及风扇均与一控制主板电连接，所述液晶屏用于在所述控制主板的控制下显示行车信息，当电子显示屏工作时所述风扇用于在所述控制主板的控制下进行转动。
较佳地，所述风扇设置于所述散热孔所在处的LED点阵光源板上，或所述风扇设置于所述通风口处对应位置的LED点阵光源板上。
较佳地，还包括散热器，所述散热器设置于所述风扇的一侧或两侧或三侧或周围的LED点阵光源板上。
较佳地，所述进风口设置于所述外壳的一个侧面上，所述出风口设置于所述外壳的另一个侧面上。
较佳地，所述进风口设置于所述外壳的背面的第一侧，相应地，所述出风口设置于所述外壳的背面的第二侧，所述第一侧及第二侧为相对外壳背面中心位置的两相对侧。
较佳地，所述散热孔为
Figure PCTCN2017085096-appb-000001
型、“T”型、“L”型、“Η”型、“丰”型、“Π”型、“+”型、“＝”型、“.”型、
Figure PCTCN2017085096-appb-000002
型、“±”型、“:”型、“Ε”型或“∫”型中的一种或若干个相同或不同的孔的组合。
较佳地，当所述散热孔的数量为多个时，至少一个散热孔位于所述LED点阵光源板的中心位置处。
较佳地，还包括雾化板，所述雾化板设于所述液晶屏及LED点阵光源板之间。
较佳地，所述雾化板的一侧与液晶屏贴合，另一侧距离所述LED点阵光源板为6mm以上。
较佳地，所述抬头显示器的显示屏外部整体的厚度为12mm～18mm。
本发明还提供了一种抬头显示器，包括如上面所述的显示屏，还包括控制部，所述控制部内设有控制主板，所述控制主板与所述电子显示屏电连接，所述控制部与所述外壳的外部固定连接或枢转连接或者所述控制部固定设置于所述外壳内。
较佳地，所述外壳的外部背面设有凸起部，所述凸起部上设置有连接部，所述控制部与所述外壳通过所述连接部固定连接或枢转连接。
较佳地，所述凸起部上还设置有进风口及出风口，所述进风口位于所述凸起部的一侧，所述出风口位于所述凸起部的另一侧。
本发明还提供了一种车用抬头显示器设备，包括显示器及反色镜装置，所述显示器用于提供投射至所述反色镜装置的源图像，其中，所述显示器包括如上所述的显示屏，所述反色镜装置包括反色镜及与之相连的支撑部，所述支撑部具有一自适应调整弯曲度的底座，用于与放置反色镜装置的支撑面的弯曲度相配合。
较佳地，所述支撑部还包括一支架，所述支架上部与所述反色镜相连，下部与所述底座的上表面相固连；其中，所述支架包括若干个上下叠加的子架，所述子架之间为可拆卸连接。
较佳地，所述支架的上部设置有固定部，所述固定部用于与所述反色镜的下部相固连，其中，所述固定部与所述支架的上部转动连接。
较佳地，所述底座包括若干子块，所述若干子块两两紧配合连接；或所述底座为一具有与汽车驾驶台配合的弧度的整体结构。
较佳地，所述底座包括若干子块时，相邻的两个子块分别具有嵌入部及凹槽，所述嵌入部与所述凹槽配合使得相邻的子块紧配合连接，且可相对转动；所述底座为一具有弧度的整体结构时，所述底座的材料为PPU或橡胶，硬度为40～70度。
较佳地，所述底座的与所述支撑面相接触的底面上设有黏胶层。
本发明提供的抬头显示器的显示屏通过在显示屏的LED点阵光源板上开孔，使得液晶屏与LED点阵光源板间可以形成有效的气流通路，配合风扇的作用，使得该显示屏散热性能良好，且体积较小，可以较好地满足整个抬头显示器需要较小的体积及呈现较大的源图像的需要。同时，这种开孔方式无需额外的专门改进LED点阵光源板或液晶屏的材质、工艺等以提高其耐热性能，利用现有技术既可以对显示屏进行良好散热，有效地提高的抬头显示器的使用寿命及显示效果。
反色镜装置的底座可适应不同的支撑面，使得反色镜装置可设置在不同类型的汽车驾驶台上；支架高度可调整，便于根据不同的驾驶员需要调整高度；结构简单，易于根据需要使用及调整底座弯曲度及反色镜的高度；具有该反色镜装置抬头显示器设备应用范围更加广泛。
附图说明
图1为本发明实施例一提供的抬头显示器整体结构示意图；
图2为本发明实施例一提供的抬头显示器显示屏部分正面示意图；
图3为本发明实施例一提供的抬头显示器显示屏部分内部组成示意图；
图4为本发明实施例一提供的抬头显示器LED点阵光源板的正面示意图；
图5为本发明实施例一提供的抬头显示器显示屏部分外部背面示意图；
图6为本发明实施例三提供的抬头显示器LED点阵光源板的正面示意图；
图7为本发明实施例三提供的抬头显示器显示屏部分外部背面示意图；
图8为本发明实施例四提供的抬头显示器显示屏的屏幕部分结构示意图；
图9为本发明实施例五提供的抬头显示器整体结构示意图；
图10为本发明优选实施例提供的抬头显示器设备使用示意图；
图11为本发明优选实施例提供的反色镜装置整体结构图；
图12为本发明优选实施例提供的反色镜装置的支架部分结构图；
图13为本发明优选实施例提供的反色镜装置的底部视图；
图14为本发明优选实施例提供的反色镜装置的背面视图；
图15为本发明另一优选实施例提供的反色镜装置的结构视图。
具体实施方式
为更好地说明本发明，兹以一优选实施例，并配合附图对本发明作详细说明，具体如下：
实施例一
如图1至图5所示，本实施例提供的一种抬头显示器的显示屏10，包括电子显示屏及外壳，其中，电子显示屏包括液晶屏11及LED点阵光源板12(结构可参考图4或图6)，电子显示屏设于外壳14的一侧且与外壳14连接构成抬头显示器的显示屏部分的外部整体结构，则相应地液晶屏11配合外壳14构成显示屏外部结构，而LED点阵光源板12位于液晶屏11与外壳构成的显示屏部分内，即其位于显示屏的内部。外壳14上设有若干通风口，通风口分为进风口和出风口(可参考图5或图7的通风口141～143的形式)。其中，LED点阵光源板12上设有若干LED灯，而LED点阵光源板12上的LED灯之间的空隙处设有至少一个散热孔122。散热孔122贯通所述LED点阵光源板，用于抬头显示器的显示屏的散热。此时，散热孔122两侧的显示屏内部的气流可通过散热孔互相交换。并且配合外壳上的通风口可以实现较好的空气流动，提高散热效果。
其中，该显示屏10的工作原理为：液晶屏11用于显示行车信息，而LED点阵光源板12用于为液晶屏11提供可调整的背光，使得该显示屏适用于不同亮度的环境中显示行车信息。而外壳上的通风口与位于显示屏内部的LED点阵光源板12上的散热孔配合，以形成可以供气流通过进行散热的空气通道。
当LED点阵光源板12工作时，显示屏内部的空气被加热，液晶屏11与LED点阵光源板12之间，以及LED点阵光源板12与外壳背面之间的空隙中所存在的空气被加热。本实施例的显示屏在进行散热时具有以下几种工作形式：
a)被加热的空气可通过通风口进行流动以与外部空气进行交换，此时，当LED点阵光源板一侧的空气流动时，另一侧被加热的空气可以通过散热孔被流动的空气所携带而流出显示屏的外壳进行散热；
b)显示屏外部的空气在受到相对较热的显示屏散发的热量的影响而流动时，通风口处流动的空气带走一部分显示屏内部的加热的空气实现散热；
c)通过散热孔进行显示屏内部的空气流动，即LED点阵光源板两侧的空气进行流动，再通过外壳上设置的通风口与外部空气进行流动和交换，例如进风口与出风口分别位于LED点阵光源板两侧的外壳上，则空气从一侧的进风口进入，穿过散热孔，再从另一侧的出风口流出，实现散热；
d)进风口与出风口位于LED点阵光源板一侧的外壳上，空气流动时，一部分空气通过散热孔进入到LED点阵光源板的另一侧，再经过散热孔返回原来所在侧，再经过出风口流出显示屏，实现散热，此时散热孔可为多个。
该些工作形式根据实际的显示屏的设置方式及不同工作状态可以同时存在，或仅存在部分组合或其中之一的工作形式。
该显示屏通过设置散热孔可以实现显示屏10内部不同区域的空气的流动交换，也可加快流动的速度，实现较好的散热。如此，显示屏的液晶屏与LED点阵光源板12以及LED点阵光源板12与外壳之间的距离可以尽可能地缩小，从而减小显示屏的整体体积，而不会造成因为显示屏内部空间过小造成热量积聚较快而影响显示屏的工作寿命。
在本实施例的一优选实施例中，进风口、散热孔以及出风口共同形成一散热通道。此时的散热通道的具体工作形式可以为上述的a)、c)及d)之一，或该三种工作形式的不同组合。
在本实施例的一优选实施例中，还包括风扇，风扇设置于电子显示屏上，风扇用于转动以带动空气形成散热的空气流，从而加快散热气流的流动速度，提高散热效率。
优选地，电子显示屏及风扇均与一控制主板电连接，液晶屏用于在控制主板的控制下显示行车信息，当电子显示屏工作时风扇用于在控制主板的控制下进行转动。
实施例二
如图1所示，本实施例提供的抬头显示器，包括显示屏10、控制部20及卡扣30，其中，控制部20与显示屏10通过连接部40连接，卡扣30可以使得该抬头显示器可以挂设在汽车遮阳板上或汽车驾驶室内的其他可挂设的位置处。本实施例中的连接部40为转轴，控制部20与显示屏10的外壳通过该转轴枢接。其中，控制部20内设有控制主板，其可以为一集成了控制芯片的电路板，以用来控制显示屏10部分的工作以提供用以显示的源图像。
如图2、图3所示，本实施例中的显示屏10包括依次排列的液晶屏11、LED点阵光源板12、风扇13、外壳14及散热器15，其中，液晶屏11、LED点阵光源板12构成电子显示屏，该电子显示屏设于外壳14的正面一侧且与外壳14紧密相固定连接构成抬头显示器外部整体。风扇13设于电子显示屏位于外壳14的内部的部分上。散热器15设于电子显示屏背部的风扇的两侧，散热器15为金属材质的空心结构，其可以将LED点阵光源板产生的热量快速收集，加热风扇13所在处的空气，从而由工作时的风扇13将加热的空气带走，进一步提高散热效率。液晶屏11、LED点阵光源板12及风扇13与控制部20内的控制主板电连接。液晶屏11用于在控制主板的控制下显示行车信息，LED点阵光源板12用于为液晶屏11提供背光，以使显示屏10提供的源图像可以达到目标亮度。优选地，风扇13的侧面还设有开口131，其与空气进出口配合，更有利于空气在壳体内的流动。
如图4所示，本实施例提供的LED点阵光源板12上具有均匀排列的若干个LED灯，该些LED灯之间留有空隙。而本实施例提供的LED灯之间的空隙处开设有散热孔122，LED点阵光源板12的一角设有两个电源接线点123。其中，该散热孔122由三个异型孔构成，具体包括如图4所示的两个倒“T”型孔及一个
Figure PCTCN2017085096-appb-000003
型孔，散热孔122开设在LED点阵之间的基板上，使得连接LED灯珠的基板保持连贯从而不破坏基板所固定的各LED灯珠间的稳固性，也不 破坏为各LED灯珠供电的印刷线路或布设的电路走线，同时可以使得该LED点阵光源板12上具有可供气流流通的散热孔。再次参见图3，具体地，本实施例中的风扇13的数量为一个，设置在LED点阵光源板12背面的与散热孔122相对应的位置处。
如图5所示，本实施例的外壳14的背面上开设有若干通风口，通风口分为进风口及出风口，本实施例中的进风口141及进风口142设置于外壳背面的下方侧面上，出风口143设置与外壳上与进风口141、142所在侧相对的背面上方侧面上。具体地，本实施例的出风口143设置在液晶屏11与LED点阵光源板12之间位置所对应的外壳位置处。本实施例的通风口设置在背面可以避免开设在外壳侧面的通风口漏光，从而使得液晶屏边缘处的图像显示效果不会由于背光变暗而成像较差。这种通风口的设置可以有效地提高显示屏显示效果，同时可以使得显示屏整体体积更小，原因在于当侧面无需开供气流流通的孔时，不会漏光，此时可以将外壳与液晶屏连接处的边缘设置的尽可能窄，甚至液晶屏周围可以无边框，使得整个显示屏正面的有效显示区域更大，而不必为了达到目标大小的显示区域同时满足良好散热而必须增大边框部分。
本实施例提供的抬头显示器工作过程如下：
当显示屏工作时，控制主板控制液晶屏11显示行车信息，控制LED点阵光源板12提供背光，同时控制风扇转动使得显示屏10的外壳14内部形成散热的空气流，外部空气从进风口141、142进入外壳14内，经由外壳14与LED点阵光源板12间的空隙后，再通过散热孔进入液晶屏11与LED点阵光源板12间的空隙，最后从出风口143流出。该些流动的空气在经过上述空隙时，被LED点阵光源板12及/或散热器15产生的热量加热，从而带走显示屏10内产生的热量，避免抬头显示器长时间工作时容易产生发热影响使用寿命及工作效果的情况。
本实施例中的风扇可选用侧向鼓风机式风扇，可以较好地与LED点阵光源板12背面贴合，配合散热孔将气流从进风口导引至出风口。本实施例由于在LED点阵光源板12上开孔使得整个显示屏形成气流通路，在满足显示屏整 体体积尽肯能小的条件下形成有效的散热通路，较好地为显示屏散热，可有效提高显示屏的工作效果及使用寿命。
实施例三
本实施例中，除以下部分与实施例一或二有所区别外，其余均与实施例一或二的实施方式相同，具体如下：
如图6所示，本实施例中的散热孔122包括两个“＝”型孔及一个
Figure PCTCN2017085096-appb-000004
型孔，两个“＝”型孔分别设置在
Figure PCTCN2017085096-appb-000005
型孔的两侧。散热孔122开设在LED点阵之间的基板上，且三个孔共同组成的散热孔位于整个LED点阵光源板12的中心位置处。
如图7所示，本实施例中的外壳14具有一凸起部，该凸起部上设有连接部40，显示屏10通过该凸起部与控制部20进行固定连接或枢转连接，凸起部的设置方便设置连接部以进行显示屏与控制部之间的连接。优选地，该凸起部的上部设有出风口143，下部设有两个进风口141及142。这种进风口及出风口的结构可以充分利用外壳14需要与控制部20相连的凸起结构，在该凸起结构上设置进风口及出风口即使得外壳14内部供气流流动的空间更大，也更接近风扇的位置，且进风口及出风口均设置在外壳背面，避免漏光，也使得气流流通更顺畅，提高散热效果。
在其他优选实施例中，连接部还可以设为铰链或卡接部，只要其满足可以将控制部及显示屏连接且可以使两者自由转动即可。
在其他优选实施例中，可以不设置卡扣，而将控制部与显示屏集成为一体式的结构，即将控制部也设置在显示屏的外壳内，但控制部需固定设置在显示屏的外壳内，这种抬头显示器可以通过配备底座而直接立置于汽车驾驶台上，显示屏与底座间通过转轴式或其他形式的连接部连接，从而便于调整显示屏的角度，从而调整源图像的发送方向。
在其他优选实施例中，风扇设于通风口处对应位置的LED点阵光源板的背面上，既可以避免挡住LED灯珠的光线，也可以在通风口处直接使空气形成散热气流，当然，风扇的数量可以设置为2个及以上，本领域技术人员可自由选择风扇的位置为散热孔处或各通风口处，只要满足良好的散热效果即可。
在其他优选实施例中，散热器可以为若干个平行排列的金属片，其可以设置在风扇的一侧或三侧或周围，根据风扇的数量及显示屏内部的空间及散热需要本领域技术人员可根据上述的内容进行适当的变形及调整，其均应包含在本发明范围之内。
在其他优选实施例中，散热孔的形式可以为
Figure PCTCN2017085096-appb-000006
型、“T”型、“L”型、“Η”型、“丰”型、“Π”型、“+”型、“＝”型、“.”型、
Figure PCTCN2017085096-appb-000007
型、“±”型、“:”型、“Ε”型或“∫”型中的一种或若干种不同孔型的孔的组合或多个同种类型的孔的组合。开孔的孔型可以尽可能占据相邻的两个或多个LED灯珠间的全部空隙，以提供尽可能大的孔供空气流通，但不能影响与LED灯珠相连的导线及LED灯珠的原本位置。本领域技术人员可根据需要将散热孔设为一个或多个上述孔型的组合，除实施例一及实施例二的设置多个孔的组合的方式外，还可以在LED点阵光源板上开设一个形状规则的孔或多个均匀排布且形状规则的孔，其满足显示屏内部气流的流通，而不影响LED灯珠的点亮及排布即可。当散热孔为“.”型孔时，该孔可以为“□”、“○”、“◇”或其他规则或不规则形状，也可以多个该些形状的孔的组合，只要其满足是LED灯珠之间的间隙处的基板上开设，而不影响LED灯珠的点亮及排布即可。
当所述散热孔的数量为多个时，至少一个散热孔位于所述LED点阵光源板的中心位置处。当然本发明对多个异型孔或相同孔间的排布的位置关系不仅以上述实施例为限，本领域技术人员根据上述公开内容所做的关于散热孔的排布方式的各种变形均应包含在本发明的范围之内。
实施例四
本实施例可以作为上述实施例的优选实施例，也可为单独的实施例。具体如下：
如图8所示，本实施例中提供的抬头显示器的显示屏的屏幕部分包括液晶屏11、LED点阵光源板12及均光隔热装置，本实施例中的均光隔热装置为雾化板16，其中，雾化板16位于液晶屏11及LED点阵光源板12之间。且雾化板16与液晶屏11之间的距离小于其与LED点阵光源板12之间的距离。通 过在液晶屏及LED点阵光源板之间设置雾化板，可以有效地将LED点阵光源发出的光线雾化，从而为液晶屏显示的图像提供更为均匀的背光，有效地缩短了液晶屏与LED点阵光源板之间的距离，也避免使用者看到或能够感受到LED灯珠的点阵的存在。而不设置雾化板时，虽然液晶屏与LED点阵光源板之间的距离达到足够远时也可以使得背光均匀，但这种方式需要使液晶屏与LED点阵光源板之间距离较远，增加了显示屏屏幕部分占用的空间，不利于抬头显示器整体的小型化、轻薄化设计。另外，LED点阵光源板12上设有若干LED灯，而LED点阵光源板12上的LED灯之间的空隙处设有至少一个散热孔122。显示屏的外壳上设有通风口，散热孔与通风口配合形成在显示屏内部空间内的空气流动的通道，可以有效地供显示屏工作时加热的内部空气流出，提高散热效果。
本实施例的一个优选实施例中，雾化板16的一侧与液晶屏11贴合，而其另一侧距离LED点阵光源板12的距离为6mm或6mm以上的任意一个数值。
在本实施例的其他优选实施例中，均光隔热装置可以为包括雾化板、均光膜、偏正膜、增光膜、隔热膜等具有均光特性或隔热特性的器件，使得该均光隔热装置可以较好地均匀LED点阵光源的发光及起到良好的隔热作用。
本实施例的一个优选实施例中，雾化板的厚度为1.5mm～2mm，本领域可根据需要选择该范围内雾化板的厚度值，具体可根据雾化板的雾化度、液晶屏与LED点阵光源板间的距离以及实际选用的LED点阵光源板的规格的不同适应性选取其规格参数。
本实施例的一个优选实施例中，抬头显示器外部整体的厚度为12mm～18mm，通过增加雾化板，使得抬头显示器显示屏的厚度有效降低，从而减小了抬头显示器的整体尺寸。
实施例五
如图9所示，本实施例为实施例一或二的优选实施例，除以下部分有所区别外，其他内容与实施例一或二相同，具体如下：
本实施例提供的抬头显示器，包括显示屏10、控制部20及卡扣30，其中，控制部20与显示屏10通过连接部40固定连接。其中，本实施例中的连 接部40为显示屏10壳体的延伸部，其与控制部20连接成为一体，使得控制部20与显示屏10的外壳通过该该连接部40固定连接。当然，在其他优选实施例中，控制部的外壳与显示屏的外壳可以直接一体化设置，而无需连接部40的连接，使其结构更稳定。此外，在其他优选实施例中也可以不设置卡扣。
其中，本发明提供的抬头显示器的显示屏部分可根据需要设置为显示屏相对控制部可以转动，也可以设置为显示屏相对于控制部不可转动，或者设置控制主板在显示屏所在的壳体内。
如图10所示，本实施例提供了一种车用抬头显示器设备，该设备包括车用抬头显示器的反色镜装置200及显示器100。其中，如图10所示，该抬头显示器设备工作时，显示器100用于提供投射至反色镜装置200的源图像，而反色镜装置200用于将上述的源图像反射以使其光线进入人眼。具体地，本实施例中显示器100设置在驾驶室上方，显示器100可挂设于遮阳板300上，而反色镜装置200设置在驾驶室的挡风玻璃400下方的驾驶台上，以便进行对来自显示器100的图像进行反射，同时驾驶员可透过反色镜装置看到前方路面。本实施例中的显示器100为一具有上述各实施例的显示屏10的显示器，该显示屏10的屏幕可根据需要设置为LCD屏、LED屏或可触控的液晶屏等以进行源图像的显示，本领域技术人员可根据需要选择显示器的具体实现形式。
其中，本实施例中所采用的反色镜装置200为透明的曲面镜，其用于放置在汽车驾驶台上，既不影响驾驶员的视线，同时其所反射的源图像可为驾驶员提供相关的行车信息，曲面的反色镜在体积有限的情况下可以对源图像进行一定程度的放大，使得驾驶员可以更加清晰地看到反射过来的图像。
进一步地，如图11所示，本实施例中的反色镜装置200具体包括反色镜210及与之相连的支撑部，支撑部具有一可自适应调整弯曲度的底座220，用于与放置反色镜装置的支撑面(如汽车驾驶室内的驾驶台)的弯曲度相配合。此外，支撑部还包括一支架230，支架230的上部与反色镜210相连，支架230的下部与底座220的上表面相固连。其中，支架230的上部还设置有固定部231，固定部231用于与反色镜210的下部相固连。
本实施例中，固定部231与支架230的上部转动连接。具体地，参见图12，固定部231包括两个夹片231a、231b(231b结构同231a，图12中仅示出231a)，该两个夹片231a、231b互相配合，用于将反色镜210夹持固定，其中，反色镜210的底部设于两个夹片231a、231b之间，两个夹片231a、231b通过若干个螺钉进行拧紧固定；此外，两个夹片231a、231b还与转轴232连接，该转轴的两端通过螺钉结构与两个夹片231a、231b互相固定，而转轴232的中间部分穿过支架230上部设置的轴孔，转轴232与轴孔之间紧配合连接。为便于夹片相对支架的转动，夹片231a、231b的中间位置处设有凹槽，支架的上部位于该凹槽内，使得夹片即可与支架上部的转轴固定，且夹片可相对支架转动。这种结构使得该转轴232既可以在轴孔中转动，方便驾驶员根据需要调整反色镜210的反射角度，便于驾驶员的使用。同时，不会使反色镜210相对支架230发生滑动，避免造成反色镜210转动时过于灵活，或反色镜210无法相对于支架230固定在选定的角度上。
此外，本实施例中的支架还包括2个上下叠加的子架，该两个子架之间为可拆卸连接。在其他优选实施例中，支架可以包括1个或2个以上的子架，其中，1个子架时，2个以上的子架时最上面的子架用于设置轴孔以与夹片相连，实现对反色镜的连接，最下面的子架的底部设有与底座相连的连接部，或其直接与底座固定连接或为一体式连接。而其他子架可以为彼此相同的结构，子架与子架之间为可拆卸连接，如具有过盈配合的凹部与凸部，以进行固定连接。本领域技术人员可根据需要设置子架之间的连接方式，其满足子架与子架之间可自由拆卸即可。这种支架可以方便驾驶员根据需要拆卸掉部分子架，实现对支架高度的调整，从而调整反色镜的高度。
如图13、图14所示，底座220包括子块220a～220g，子块220a～220g两两紧配合连接。优选地，底座的子块220a～220g与汽车驾驶台支撑该反色镜装置的支撑面相接触的底面上设有黏胶层221。具体地，本实施例中的子块数量为7个，子块220d位于中间位置，两侧分别设有两组子块分别为220a、220b、220c及220e、220f、220g。子块220d用于与支架相连，以使得底座与支架共同构成支撑部支撑反色镜。而底座220设置为多个子块的结构可使得该些 子块之间进行自适应的相互转动，使得底座220的底部可根据其所在的支撑面的弧度而自由地调整底座的弧度，这种结构类似与链式结构，但子块与子块之间紧配合连接，使得各子块之间可相互转动，但不可以灵活转动，使得相邻子块与子块之间可保持一定的相对位置，便于底座的固定及支撑反色镜的功能。而黏胶层221的设置使得底座与驾驶台的位置可相对固定，以避免其在行车的过程中发生相对位置的滑动。其中，此处的黏胶层的黏性应当为：既可以使得底座与支撑面相互固定，又便于驾驶员根据需要将底座与支撑面相分离。
再次参见图14，相邻的两个子块分别具有嵌入部及凹槽，其中，嵌入部的截面为圆形，相应地，凹槽截面也为圆形，嵌入部与凹槽配合使得相邻的子块紧配合连接，且可相对转动。
在另一优选实施例中，参见图15，底座220为一具有与汽车驾驶台配合的弧度的整体结构。此时，该整体结构的底座的材料可以根据需要设置为PPU或橡胶等具有一定硬度的软质材料，便于直接于汽车驾驶台表面贴合，其硬度为40～70度。
本领域技术人员应当理解，上述的固定部的形式不仅限于夹片，还可为通过螺钉及固定板将反色镜穿孔后固定在固定部内，以与支架固定。而支架的高度调节也可通过可伸缩的支撑杆的形式实现支架的具体结构。而子架与子块的数量本领域技术人员均可根据需要自由设置，本领域技术人员根据上述实施例所作出的各种变形其均应包含在本发明的范围内。
本领域技术人员可在上述各实施例的启示下，根据上述各实施例的技术方案对各技术特征进行自由组合，只要个技术特征在自由组合时不相互冲突即可，因此，对上述各实施例的技术特征进行的各种组合的技术方案也包含在本发明范围之内。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何本领域的技术人员在本发明揭露的技术范围内，对本发明所做的变形或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述的权利要求的保护范围为准。

Claims (20)

  1. 一种抬头显示器的显示屏，其特征在于，包括电子显示屏及外壳，所述电子显示屏设于外壳的一侧与外壳连接构成抬头显示器的显示屏外部整体，所述外壳上设有若干通风口，所述电子显示屏包括液晶屏及LED点阵光源板，所述LED点阵光源板上设有若干LED灯，所述LED点阵光源板上的LED灯之间的空隙处设有至少一个散热孔；所述散热孔贯通所述LED点阵光源板，用于抬头显示器的显示屏的散热。
  2. 根据权利要求1所述的抬头显示器的显示屏，其特征在于，所述通风口分为进风口以及出风口，其中所述进风口、散热孔以及出风口共同形成一散热通道。
  3. 根据权利要求1或2所述的抬头显示器的显示屏，其特征在于，还包括风扇，所述风扇设于所述电子显示屏上，所述风扇用于转动以带动空气流动形成散热的空气流。
  4. 根据权利要求3所述的抬头显示器的显示屏，其特征在于，所述电子显示屏及风扇均与一控制主板电连接，所述液晶屏用于在所述控制主板的控制下显示行车信息，当电子显示屏工作时所述风扇用于在所述控制主板的控制下进行转动。
  5. 根据权利要求3所述的抬头显示器的显示屏，其特征在于，所述风扇设置于所述散热孔所在处的LED点阵光源板上，或所述风扇设置于所述通风口处对应位置的LED点阵光源板上。
  6. 根据权利要求3所述的抬头显示器的显示屏，其特征在于，还包括散热器，所述散热器设置于所述风扇的一侧或两侧或三侧或周围的LED点阵光源板上。
  7. 根据权利要求2所述的抬头显示器的显示屏，其特征在于，所述进风口设置于所述外壳的一个侧面上，所述出风口设置于所述外壳的另一个侧面上。
  8. 根据权利要求2所述的抬头显示器的显示屏，其特征在于，所述进风口设置于所述外壳的背面的第一侧，相应地，所述出风口设置于所述外壳的背面的第二侧，所述第一侧及第二侧为相对外壳背面中心位置的两相对侧。
  9. 根据权利要求1所述的抬头显示器的显示屏，其特征在于，当所述散热孔的数量为多个时，至少一个散热孔位于所述LED点阵光源板的中心位置处。
  10. 根据权利要求1所述的抬头显示器的显示屏，其特征在于，还包括雾化板，所述雾化板设于所述液晶屏及LED点阵光源板之间。
  11. 根据权利要求10所述的抬头显示器的显示屏，其特征在于，所述雾化板的一侧与液晶屏贴合，另一侧距离所述LED点阵光源板为6mm以上。
  12. 一种抬头显示器，其特征在于，包括如权利要求1至11任意一项所述的显示屏，还包括控制部，所述控制部内设有控制主板，所述控制主板与所述电子显示屏电连接，所述控制部与所述外壳的外部固定连接或枢转连接或者所述控制部固定设置于所述外壳内。
  13. 根据权利要求12所述的抬头显示器，其特征在于，所述外壳的外部背面设有凸起部，所述凸起部上设置有连接部，所述控制部与所述外壳通过所述连接部固定连接或枢转连接。
  14. 根据权利要求13所述的抬头显示器，其特征在于，所述凸起部上还设置有进风口及出风口，所述进风口位于所述凸起部的一侧，所述出风口位于所述凸起部的另一侧。
  15. 一种车用抬头显示器设备，其特征在于，包括显示器及反色镜装置，所述显示器用于提供投射至所述反色镜装置的源图像，其中，所述显示器包括如权利要求1至11任意一项所述的显示屏，所述反色镜装置包括反色镜及与之相连的支撑部，所述支撑部具有一自适应调整弯曲度的底座，用于与放置反色镜装置的支撑面的弯曲度相配合。
  16. 根据权利要求15所示的车用抬头显示器设备，其特征在于，所述支撑部还包括一支架，所述支架上部与所述反色镜相连，下部与所述底座的上表面相固连；其中，所述支架包括若干个上下叠加的子架，所述子架之间为可拆卸连接。
  17. 根据权利要求16所示的车用抬头显示器设备，其特征在于，所述支架的上部设置有固定部，所述固定部用于与所述反色镜的下部相固连，其中，所述固定部与所述支架的上部转动连接。
  18. 根据权利要求15所述的车用抬头显示器设备，其特征在于，所述底座包括若干子块，所述若干子块两两紧配合连接；或所述底座为一具有与汽车驾 驶台配合的弧度的整体结构。
  19. 根据权利要求18所述的车用抬头显示器设备，其特征在于，所述底座包括若干子块时，相邻的两个子块分别具有嵌入部及凹槽，所述嵌入部与所述凹槽配合使得相邻的子块紧配合连接，且可相对转动；所述底座为一具有弧度的整体结构时，所述底座的材料为PPU或橡胶，硬度为40～70度。
  20. 根据权利要求15所述的车用抬头显示器设备，其特征在于，所述底座的与所述支撑面相接触的底面上设有黏胶层。
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