CN217197782U - Head-up display - Google Patents
Head-up display Download PDFInfo
- Publication number
- CN217197782U CN217197782U CN202090000739.1U CN202090000739U CN217197782U CN 217197782 U CN217197782 U CN 217197782U CN 202090000739 U CN202090000739 U CN 202090000739U CN 217197782 U CN217197782 U CN 217197782U
- Authority
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- China
- Prior art keywords
- positioning
- side contact
- contact portion
- supported
- head
- Prior art date
- Legal status (The legal status 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 status listed.)
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Links
- 229920005989 resin Polymers 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 8
- 239000000945 filler Substances 0.000 description 6
- 239000004677 Nylon Substances 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 239000011231 conductive filler Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Instrument Panels (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The utility model provides a head-up display that can realize saving spaceization. A head-up display (1) according to an embodiment is provided with: a lower housing (55) having a housing side contact portion (81); and a radiator (20) which has a radiator side contact portion (91) and is supported by being screwed to the housing side contact portion (81) at the radiator side contact portion (91). The housing-side contact portion (81) has: a positioning concave part (82) which is concave relative to the shell side contact part (81); and a housing-side threaded hole (85) formed in the positioning recess (82), the heat sink-side contact portion (91) having: a positioning convex part (92) which is convex relative to the radiator side contact part (91) and is accommodated in the positioning concave part (82); and a radiator-side screw hole (95) formed in the positioning convex section (92) along the convex direction of the positioning convex section (92).
Description
Technical Field
The present invention relates to a head-up display mounted on a vehicle or the like.
Background
The head-up display includes a housing accommodating a display device and a reflector in an internal space. Various structures for fixing and supporting components such as a display device are provided in the housing. When fixing the member to the housing, the following method may be employed: with the structures for positioning provided to the housing and the component, respectively, screw fastening is performed after temporary fixing.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2014-96226
In the case where both the structure for positioning and the structure for screw fastening are provided on the housing and the component, it is necessary to secure respective areas for them. At the same time, the size of the housing and the components becomes large, which may hinder space saving of the head-up display.
The present invention has been made in view of such circumstances, and an object thereof is to provide a head-up display capable of realizing space saving.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the head-up display of the present invention includes: a support member having a support-side contact portion; and a supported member that has a supported-side contact portion and is supported by being screwed to the supporting-side contact portion at the supported-side contact portion, the supporting-side contact portion having: a positioning concave portion that is concave with respect to the support-side contact portion; and a support-side threaded hole formed in the positioning recess, the supported-side contact portion having: a positioning convex portion that is convex with respect to the supported-side contact portion and that is accommodated in the positioning concave portion; and a supported side screw hole formed in the positioning convex portion along a convex direction of the positioning convex portion.
Effect of utility model
The utility model discloses a head-up display can realize the space-saving.
Drawings
Fig. 1 is an external perspective view illustrating an overall configuration of a head-up display according to a first embodiment of the present invention.
Fig. 2 is a plan view of the head-up display in the first embodiment with the upper case removed, as viewed from above.
Fig. 3 is a sectional view taken along the line III-III of fig. 2.
Description of the symbols
1 head-up display (HUD)
10 display device
20 heating radiator (supported component)
21 base part
21a both end faces
22 heat radiation fin
30 plane mirror
40 concave mirror
50 casing
50a inner space
51 upper shell
52 opening part
53 light-transmitting cover
55 lower case (supporting parts)
55a inner surface
55b outer surface of
56 open mouth
60 Circuit Board
80 fixing structure
81 casing side contact part (support side contact part)
81a front side contact part
81b rear side contact
82 positioning concave part
82a front side positioning concave part (second concave part)
82b rear side positioning concave part (first concave part)
83 bottom surface
85 side screw hole of shell (support side screw hole)
90 fixed structure
91 radiator side contact part (supported side contact part)
91a lower surface
92 positioning convex part
95 radiator side screw hole (supported side screw hole)
100 screw
L display light
Detailed Description
A first embodiment of a head-up display according to the present invention is described with reference to the drawings. The utility model discloses a head-up display for example carries on vehicles such as car.
(first embodiment)
Fig. 1 is an external perspective view illustrating an overall structure of an embodiment of a head-up display according to the present invention.
Fig. 2 is a plan view of the head-up display 1 in a state where the upper case 51 is removed, as viewed from above.
In the following description, "front (front)", "rear (back)", "upper", "lower", "right" and "left" are in accordance with the definitions "Fr.", "Re.", "To.", "Bo.", "R" and "L" in fig. 1 to 3.
The head-up display 1 (hereinafter referred to as HUD1) is disposed in the instrument panel of an automobile. The HUD1 mainly has the display device 10, the heat sink 20, the plane mirror 30, the concave mirror 40, the case 50, and the circuit substrate 60. The HUD1 reflects the display light L indicating the display image displayed by the display device 10 on the plane mirror 30 and the concave mirror 40 constituting the relay optical system, and irradiates the windshield of the automobile, which is an example of the transmission/reflection unit. The viewer (mainly the driver) can visually recognize the virtual image of the display image while overlapping the real scene in front of the vehicle.
The display device 10 outputs display light L. The display device 10 is, for example, a TFT (Thin Film Transistor) type liquid crystal display device. The display device 10 has a backlight unit and a liquid crystal display panel. In particular, the backlight unit has a light source substrate that becomes a heat generation source.
The heat sink 20 is fixed to the display device 10, and dissipates heat generated from the light source substrate (display device 10). The heat sink 20 is thermally connected via a heat conductive sheet. The heat conductive sheet is provided between the light source substrate and the heat sink 20, and efficiently transfers heat of the light source to the heat sink 20.
The heat sink 20 has a base 21 and a plurality of heat radiating fins 22. The base 21 has a disposition surface of the heat conductive sheet. The heat dissipating fins 22 extend substantially perpendicularly from the surface of the base 21 opposite to the surface on which the heat conductive sheets are arranged. A part of the heat radiation fins 22 is exposed from the opening 56 of the lower case 55. The heat sink 20 is fixed to the lower case 55 by screws 100 (described in detail later).
The heat sink 20 is a molded article formed of a highly thermally conductive resin material. The high thermal conductivity resin of the present invention is obtained by mixing a high thermal conductivity filler such as a ceramic filler with a resin such as nylon, and is defined as a mixed resin having a thermal conductivity (thermal conductivity) of at least 1.0W/(m · K). The highly thermally conductive filler is preferably an insulating filler such as alumina, boron nitride, or aluminum nitride, which is one of ceramics. When heat dissipation is further required, a filler having no electrical insulating property, such as aluminum, copper, or graphite, may be selected as the high thermal conductive filler.
As an example of the thermal conductivity in each structure, the thermal conductivity of the nylon resin alone is 0.22 to 0.43W/(m.K). On the other hand, the thermal conductivity of a highly thermally conductive resin in which a ceramic filler having electrical insulation is mixed with a nylon resin is about 5W/(m · K). The thermal conductivity of a highly thermally conductive resin obtained by mixing a nylon resin with a filler having no electrical insulating property is about 50W/(m · K). That is, the highly thermally conductive resin has higher thermal conductivity than general resins.
The plane mirror 30 (reflecting mirror) has a base material made of, for example, a synthetic resin material, and a reflecting film formed on the surface of the base material by vapor deposition or the like. The plane mirror 30 reflects the display light L output from the display device 10 toward the concave mirror 40.
The concave mirror 40 (reflecting mirror) has a base material made of, for example, a synthetic resin material, and a reflecting film formed on the surface of the base material by means of vapor deposition or the like. The concave mirror 40 reflects the display light L reflected by the plane mirror 30 toward the windshield. The concave mirror 40 has a function as a magnifying lens, and magnifies and reflects the display image toward the windshield. Thereby, the viewer views the enlarged virtual image of the display image. The concave mirror 40 is rotated about a rotation axis by an actuator (not shown). The actuator adjusts the angle of the concave mirror 40 by rotating the concave mirror 40, thereby adjusting the irradiation position of the display light L or adjusting the angle at which the external light is not reflected by the concave mirror 40 toward the display device 10.
The housing 50 has an upper housing 51 and a lower housing 55. The housing 50 forms an internal space 50a by combining the upper housing 51 and the lower housing 55. Display device 10, plane mirror 30, and concave mirror 40 are accommodated in internal space 50 a. The internal space 50a of the housing 50 serves as an optical path of the display light L. The upper case 51 and the lower case 55 are made of, for example, black synthetic resin (e.g., polypropylene) having light-shielding properties.
The upper case 51 has an opening 52 at a portion facing the windshield. The opening 52 is covered with a translucent cover 53 having translucency. The light-transmitting cover 53 transmits the display light L reflected by the concave mirror 40.
The circuit board 60 is a printed circuit board on which a control unit for controlling the operation of the display device 10 and the like is mounted. The control Unit includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and executes predetermined arithmetic Processing in accordance with a program written in the ROM, for example. The Control Unit obtains various pieces of vehicle information from, for example, an ECU (Electronic Control Unit) of the vehicle. The control unit drives the display device 10 based on the acquired information.
The circuit board 60 is disposed on the outer surface 55b of the lower case 55. The circuit board 60 is covered and protected by a board cover (not shown). The board cover is fixed to the lower case 55 together with the circuit board 60 by screws.
Next, a fixing structure formed in the lower case 55 and the heat sink 20 for fixing the heat sink 20 to the lower case 55 will be described in detail. Fig. 3 is a sectional view taken along the line III-III of fig. 2. In fig. 3, a part of the structure of the heat sink 20 is omitted for the explanation of the fixing structure.
The fixing structure 80 on the lower housing 55 (support member) side has a housing side contact portion 81, a positioning recess 82, and a housing side threaded hole 85.
The housing-side contact portion 81 (support-side contact portion) has a front-side contact portion 81a and a rear-side contact portion 81b which are provided symmetrically with respect to the substantially front-rear direction. The case side contact portion 81 is a flat surface-shaped region substantially orthogonal to the vertical direction.
The positioning concave portion 82 is formed in a concave shape with respect to the housing side contact portion 81. The rear positioning concave portion 82b (first concave portion) formed in the rear contact portion 81b is formed in a substantially circular shape in a plan view (axial direction view). The front positioning recess 82a (second recess) formed in the front contact portion 81a is formed in a substantially oblong shape having a major axis along a direction toward the rear positioning recess 82b in a plan view.
The housing-side threaded hole 85 (support-side threaded hole) is a female thread in which a thread to be fitted with the thread of the screw 100 is formed. The housing-side threaded hole 85 (support-side threaded hole) is a female thread in which a thread to be fitted with the thread of the screw 100 is formed. The housing-side threaded hole 85 is formed downward from the bottom surface 83, which is a surface facing the opening end surface of the positioning recess 82 on the housing-side contact portion 81 side. The case-side threaded hole 85 on the rear positioning recessed portion 82b side is formed concentrically (with the central axis aligned) with the right circular rear positioning recessed portion 82 b. The housing-side threaded hole 85 on the front positioning recessed portion 82a side and the elongated front positioning recessed portion 82a are formed concentrically (with the central axis aligned).
The fixing structures 90 on the heat sink 20 (fixed member) side are provided on both end surfaces 21a of the base 21 facing in the front-rear direction. The fixing structure 90 has a radiator-side contact portion 91, a positioning convex portion 92, and a radiator-side screw hole 95.
The radiator-side contact portion 91 (supported-side contact portion) is a flat-surface-shaped region (member) that protrudes substantially perpendicularly from both end surfaces 21a of the radiator 20 and substantially perpendicularly to the vertical direction. The heat sink 20 is physically contacted and supported with the case side contact portion 81 by the heat sink side contact portion 91.
The positioning convex portion 92 is convex downward with respect to the heat sink side contact portion 91, and has a substantially right circular column shape. The positioning convex portion 92 has a diameter set to have a clearance with the positioning concave portion 82. The positioning convex portion 92 has a projection amount (vertical length from (the lower surface 91a of) the heat sink side contact portion 91) smaller than a recess amount (vertical length from) the housing side contact portion 81 of the positioning concave portion 82. Thus, the positioning convex portion 92 is completely accommodated in the positioning concave portion 82 in a state of not contacting the positioning concave portion 82 in design.
A radiator-side screw hole 95 (supported-side screw hole) is formed in the positioning convex portion 92 along the convex direction of the positioning convex portion 92. Specifically, the radiator-side screw hole 95 is formed at a position where the positioning convex portion 92 is provided on the radiator-side contact portion 91. The radiator-side screw hole 95 and the positioning convex portion 92 of the right circular column shape are formed concentrically (with the central axis coinciding). The radiator-side screw hole 95 has a diameter larger than that of the case-side screw hole 85, and is not provided with a screw thread.
The HUD1 can save space by having the fixing structures 80 and 90. That is, in comparison with the HUD having the uneven structure for positioning at a different location from the threaded hole as a comparative example, the HUD1 of the present embodiment has the threaded holes 85 and 95, the positioning convex portion 92, and the positioning concave portion 82 formed along the axial direction (vertical direction) of the screw 100. Thus, the HUD1 does not need to secure a space for providing the positioning concave portion 82 and the positioning convex portion 92 on the front-rear-left-right direction surface, other than the space for providing the screw holes 85 and 95. Therefore, the HUD1 can save space, and can also reduce the size of the HUD1 and improve the degree of freedom in design.
In addition, the heat sink 20 is formed of a high thermal conductive resin material having lower strength than metal. Accordingly, the heat sink side screw hole 95 is made larger than the diameter of the case side screw hole 85, that is, the diameter to be fitted with the screw 100. The amount of projection of the positioning convex portion 92 is made smaller than the amount of recess of the positioning concave portion 82. Further, the diameter of the positioning convex portion 92 is set so as to form a gap between the positioning concave portion 82 and the positioning convex portion 92. This can prevent the heat sink 20 from contacting the screw 100 and the lower case 55 and applying unnecessary force to the heat sink 20 during screwing, and can prevent the heat sink 20 from being damaged.
Several embodiments of the present invention have been described, but these embodiments are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope equivalent to the invention described in the claims.
For example, although an example in which the supporting member is the lower case 55 and the supported member is the heat sink 20 has been described, the present invention is not limited to this example, and can be applied to various kinds of members between two members. For example, the supporting member may be the lower case 55, and the supported member may be the display device 10. The supporting member may be the display device 10, and the supported member may be the heat sink 20.
The clearance between the positioning convex portion and the positioning concave portion is not essential, and may be in contact.
Claims (7)
1. A head-up display is characterized by comprising:
a support member having a support-side contact portion; and
a supported member that has a supported-side contact portion and is supported by being screwed to the supporting-side contact portion at the supported-side contact portion,
the support-side contact portion has: a positioning concave portion that is concave with respect to the support-side contact portion; and a support-side threaded hole formed in the positioning recess,
the supported side contact portion has: a positioning convex portion that is convex with respect to the supported-side contact portion and that is accommodated in the positioning concave portion; and a supported side screw hole formed in the positioning convex portion along a convex direction of the positioning convex portion.
2. Head-up display according to claim 1,
the positioning concave part and the supporting side threaded hole are formed in concentric circles,
the positioning convex part and the supported side threaded hole are formed in concentric circles.
3. Head-up display according to claim 2,
the positioning recess has: a first recess formed in a substantially perfect circle shape when viewed in an axial direction; and a second recess formed in a substantially oblong shape having a long axis along a direction toward the first recess.
4. Head-up display according to claim 1,
the supported side threaded hole has a diameter larger than that of the supporting side threaded hole.
5. Head-up display according to claim 1,
the positioning convex portion has a smaller amount of projection than the amount of recess of the positioning concave portion.
6. Head-up display according to claim 1,
the positioning convex portion has a diameter set with a gap from the positioning concave portion.
7. The head-up display according to claim 1, comprising:
a display device that outputs display light;
a heat sink that dissipates heat emitted by the display device;
a mirror that reflects the display light output from the display device; and
a housing accommodating the display device and the mirror,
the support member is the housing and the support member is,
the supported member is the heat sink.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019170941 | 2019-09-19 | ||
| JP2019-170941 | 2019-09-19 | ||
| PCT/JP2020/033869 WO2021054188A1 (en) | 2019-09-19 | 2020-09-08 | Head-up display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217197782U true CN217197782U (en) | 2022-08-16 |
Family
ID=74883139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202090000739.1U Active CN217197782U (en) | 2019-09-19 | 2020-09-08 | Head-up display |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2021054188A1 (en) |
| CN (1) | CN217197782U (en) |
| WO (1) | WO2021054188A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0353472Y2 (en) * | 1987-06-12 | 1991-11-22 | ||
| JP3806673B2 (en) * | 2002-06-28 | 2006-08-09 | 三洋電機株式会社 | Power supply |
| JP2013098318A (en) * | 2011-10-31 | 2013-05-20 | Panasonic Corp | Substrate positioning structure |
| JP6885098B2 (en) * | 2017-02-21 | 2021-06-09 | 日本精機株式会社 | Lighting device |
| JP2019059440A (en) * | 2017-09-28 | 2019-04-18 | 三菱自動車工業株式会社 | Attachment structure of vehicle head-up display device |
-
2020
- 2020-09-08 WO PCT/JP2020/033869 patent/WO2021054188A1/en active Application Filing
- 2020-09-08 JP JP2021546621A patent/JPWO2021054188A1/ja active Pending
- 2020-09-08 CN CN202090000739.1U patent/CN217197782U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021054188A1 (en) | 2021-03-25 |
| JPWO2021054188A1 (en) | 2021-03-25 |
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