JP2008185790A - Head-up display device - Google Patents

Abstract

A head-up display device capable of managing shakiness without using an urging member is provided.
A head-up display device includes a holder member 20 that holds a reflecting member 10 and support portions 31 and 41 that are provided in the housing 1 and support the holder member 20 so as to be rotatable about a rotation axis AX. The holder member 20 is provided with a pair of first and second supported parts 23 and 24 provided so as to sandwich the reflecting member 10 along the rotation axis AX, and the support parts 31 and 41 are the first parts. The first support portion 31 that supports the supported portion 23 and the second support portion 41 that supports the second supported portion 24, and the first support portion 31 and the first supported portion 23. A gap S that allows movement of the first supported portion 23 in the direction of the rotation axis AX is provided, and the second supported portion 41 and the second supported portion 24 are arranged on the side where the second supported portion 24 is disposed. Restriction portions 25 and 26 for restricting movement of the support portion 24 in the direction of the rotation axis AX Digits.
[Selection] Figure 4

Description

  The present invention relates to a head-up display device which is mounted on a vehicle and performs display by irradiating display light from a display element to a windshield or a dedicated irradiation member.

  As a conventional head-up display device, for example, a device described in Patent Document 1 is known. In this head-up display device, a display element made of, for example, a liquid crystal panel and a reflection member are accommodated in a housing in which an emission part is formed, and display light (display image) of the display element is reflected through the reflection member and is also transmitted through the emission part. The display is performed by irradiating the irradiation member of the vehicle and the windshield of the automobile.

  The reflection member is held through a holder member, and is provided so as to be rotatable about a predetermined rotation axis so that the position of the display image irradiated on the windshield as an irradiation member can be moved to adjust the position. At this time, the holder member is provided with a pair of shaft portions (supported portions) that project to the periphery along the rotation axis, and on the other hand, on the housing side, a pair of bearing portions that support the pair of shaft portions ( The supporting member is provided, and the reflecting member held through the holder member is configured to be rotatable by bearing-holding these shaft portions with the bearing portion.

  Incidentally, the holder member is preferably formed of a synthetic resin material, but the synthetic resin material has a property of a large linear expansion coefficient. For this reason, it is necessary to secure a clearance in the rotation axis direction (rotation thrust direction) when supporting the synthetic resin holder member by bearing. However, if the clearance is set large, rattling occurs due to vibration.

In order to cope with such a problem, in the head-up display device described in Patent Document 1 below, a biasing member made of a coil spring is interposed between the shaft portion and the bearing portion to move the holder member in the direction of the rotation axis. Controls (prevents) rattling caused by movement of
JP 2006-248322 A (FIG. 2)

  However, the head-up display device described in Patent Document 1 requires a biasing member to prevent the holder member from rattling, which increases the number of parts and further complicates the assembly work. .

  The present invention has been made in view of this point, and a main object thereof is to provide a head-up display device capable of managing shakiness without using an urging member.

  In order to achieve the above object, the present invention accommodates a display element and a reflecting member in a housing in which an emitting part is formed, reflects display light of the display element through the reflecting member, and transmits a predetermined light through the emitting part. A head-up display device that performs display by irradiating an irradiation member, the holder member holding the reflection member and being rotatable about a predetermined rotation axis, and the holder member being provided in the housing And a support part that supports the pivot member so as to be pivotable about the pivot axis, and the holder member is provided with a pair of first and second supported parts sandwiching the reflecting member along the pivot axis. A first support portion that supports the first supported portion and a second support portion that supports the second supported portion, and the first support portion The first A gap that allows movement of the first supported portion in the direction of the rotation axis is provided between the support portion, and the second support portion and the second supported portion are disposed on the side where the second supported portion is disposed. A restricting portion for restricting movement of the second supported portion in the direction of the rotation axis is provided.

  Further, the present invention is characterized in that at least one of the first and second support portions is formed as a separate part from the housing, and is fixed to the housing.

  Further, the present invention is characterized in that the second support portion is formed on a support member which is a separate part from the housing, and the support member is formed in a box shape.

  ADVANTAGE OF THE INVENTION According to this invention, the initial objective can be achieved and the head-up display apparatus which can manage shakiness without using a biasing member can be provided.

  1 to 8 show an embodiment of the present invention. FIG. 1 is a schematic view showing the overall configuration of a head-up display device to which the present invention is applied. FIG. 2 is an exploded perspective view of a reflection unit in the embodiment. 3 is a front view of the reflecting unit in the same embodiment, FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3, FIG. 5 is a side view of the reflecting unit in the same embodiment, and FIG. The perspective view of a supporting member and FIG.7 and FIG.8 are principal part sectional drawings explaining the assembly | attachment of the 2nd supporting member in the embodiment.

  In FIG. 1, the head-up display device according to the present embodiment is mounted on, for example, an automobile, and includes a housing 1, a display unit 2, a backlight unit (illuminating means) 3, a plane mirror 4, and a reflection unit 5. , The actuator 6, and the display light (display image) L generated through the display unit 2 and the backlight unit 3 and reflected through the plane mirror 4 and the reflection unit 5 is converted to a windshield of the vehicle (predetermined irradiation member). 7 is displayed and the display contents include various vehicle information, navigation information, and the like.

  The housing 1 is made of, for example, black synthetic resin. The housing 1 accommodates the display unit 2, the backlight unit 3, the plane mirror 4, the reflection unit 5, and the actuator 6 inside, and displays light L on the side facing the windshield 7. Is emitted toward the windshield 7, and the emission portion 8 is covered with a translucent cover 9.

  The display unit 2 includes a display panel made of, for example, a liquid crystal display panel that receives light from the backlight unit 3 and forms a display image (display light) L, and is fixedly disposed on the housing 1.

  The backlight unit 3 includes a light source substrate, a light source, a lens member, a case, and the like. The backlight unit 3 is located behind the display unit 2 and fixed to the housing 1.

  The plane mirror 4 reflects the display light L from the display unit 2 toward the reflection unit 5.

  The reflection unit 5 reflects the display light (display image) L incident through the plane mirror 4 toward the emission unit 8 and, with the operation of the actuator 6, the center (axis) about a predetermined rotation axis AX (see FIG. 4). Although it is comprised so that rotation is possible, the detailed structure is mentioned later.

  The display light L reflected through the reflection unit 5 is transmitted through the translucent cover 9 provided in the emitting portion 8 and is irradiated onto the windshield 7 and is visually recognized by the occupant P as a virtual image.

  The actuator 6 is composed of, for example, a stepping motor, and is attached and fixed to the housing 1 in a state of being connected to the reflection unit 5 through an output gear 6a (see FIG. 5).

  Next, the reflection unit 5 will be described with reference to FIGS. The reflection unit 5 includes a reflection member 10 and a holder member 20.

  The reflecting member 10 is a concave mirror in which a reflecting film is formed on the surface of a base material made of a synthetic resin material by means such as vapor deposition.

  The holder member 20 is made of, for example, a black synthetic resin material, and includes a holding portion 21, a gear portion 22, a pair of first and second supported portions 23 and 24, and a pair of restriction portions 25 and 26. ing.

  The holding part 21 extends along the reflecting member 10 and adheres to and holds the reflecting member 10.

  The gear portion 22 is formed on the opposite side of the holding portion 21 to the side to which the reflecting member 10 is bonded, and is connected to the output gear 6 a of the actuator 6.

  The pair of first and second supported parts 23 and 24 are provided so as to sandwich the reflecting member 10 along the rotation axis AX when the holder member 20 is rotated through the actuator 6. It is rotatably supported by the housing 1 through a pair of support portions.

  Of the pair of first and second supported portions 23 and 24, the first supported portion 23 is located on the opposite side of the holding portion 21 from the side to which the reflecting member 10 is bonded, and is cylindrical ( And is open so that one of the pair of support portions can be inserted.

  On the other hand, the second supported portion 24 is narrow in cross-section by using the protruding piece 28 that is bent from the holding portion 21 and protrudes further laterally from the outer wall surface of the extension 27 that extends to the side of the reflecting member 10. It is formed as a shaft part so that it can be inserted into the other of the pair of support parts.

  The pair of restricting portions 25 and 26 is formed of a flange-shaped portion having a wide cross section formed so as to sandwich the second supported portion 24 using the protruding piece 28, and the second supported portion 24 is connected to the other of the above-described portions. When inserted into the support portion, it abuts against a part of the support portion and restricts the movement of the second supported portion 24 in the direction of the rotation axis AX. In this case, the interval between the restricting portions 25 and 26 allows the second supported portion 24 to be inserted into the other supporting portion, but when the insertion is completed, the second supported portion 24 is moved in the direction of the rotation axis AX. It is set to a size that can be prohibited.

  Next, the first and second support portions will be described with reference to FIGS. 2 to 4 and 6.

  First, first and second support members 30 and 40 which are separate parts from the housing 1 are attached and fixed to one location of the housing corresponding to each of the first and second supported portions 23 and 24. First and second support portions 31 and 41 are formed on the first and second support members 30 and 40, respectively.

  The first support member 30 is made of, for example, a black synthetic resin material, and includes a first support portion 31 and a first attachment fixing portion 32.

  The 1st support part 31 protrudes along rotation axis AX, and consists of a protrusion part which inserts the 1st supported part 23 and supports the end of the holder member 20 rotatably.

  The first mounting and fixing portion 32 is formed of a plate-like piece whose cross-sectional shape is bent in a “<” shape, and is fixedly fixed to the first mounting portion 50 of the housing 1 through a screw or the like.

  The second support member (support member) 40 is also made of, for example, a black synthetic resin material, and includes a second support portion 41, a second attachment fixing portion 42, a peripheral wall portion 43, and a partition portion 44. It has a bottom box shape.

  The second support portion 41 includes a hole portion that rotatably supports the second support portion 24 by forming a part of the peripheral wall portion 43 in a notch. An introduction groove 45 provided to cut out a part of the peripheral wall portion 43 is connected, and the second support portion 24 is assembled through the introduction groove 45.

  The second mounting / fixing portion 42 forms a bottom wall of the peripheral wall portion 43 and the partitioning portion 44 and is fixedly fixed to the second mounting portion 60 of the housing 1 through screws or the like.

  The peripheral wall portion 43 and the partition portion 44 are continuously formed on the second mounting / fixing portion 4 so as to ensure the strength of the second support member 40.

  Next, attachment of the holder member 20 to the housing 1 through the first and second support members 30 and 40 will be described.

  First, the first support member 30 is attached and fixed to the first attachment portion 50 of the housing 1.

  Next, the second support member 40 is inserted and assembled into the second supported portion 24 of the holder member 20.

  At this time, as shown in FIGS. 7 and 8, the second supported portion 24 has a cross-sectional shape set to an elongated shape formed by combining a pair of wide portions and a pair of narrow portions. After the supported portion 24 is inserted into the introduction groove 45 of the second support member 40 along its longitudinal axis and positioned in the second support portion 41 (FIG. 7), the supported portion 24 or the second portion By rotating the support member 40, the longitudinal axis of the supported portion 24 and the extension axis of the introduction groove 45 are made inconsistent, whereby the assembly of the second support member 20 to the holder member 20 is completed.

  Next, the holder member 20 assembled with the second support member 20 is assembled to the housing 1, and the assembly is performed by attaching the holder member to the first support portion 31 of the first support member 30 that is attached and fixed in advance. The first supported portion 23 of 20 is inserted along the direction of the rotation axis AX to support the holder member 20 with respect to the housing 1, and then the second supported portion 41 of the holder member 20 is supported. The second support member 40 is attached and fixed to the second attachment portion 60 of the housing 1, whereby the holder member 20 is rotatably attached to the housing 1.

  In this attached state, the gear 22 of the holder member 20 is connected to the output gear 6 a of the actuator 6, and the reflecting member 10 held by the holder member 20 rotates with the operation of the actuator 6, and the display on the windshield 7 is performed. The position of the image L can be adjusted in the vertical direction when viewed from the passenger P.

  Further, in this attached state, the first supported portion 23 has a gap S between the first supported portion 31 and the first supported portion 23 that allows the first supported portion 23 to move in the direction of the rotation axis AX. The second supported portion 24 is supported by the first support portion 31, while the second supported portion 24 is the second support portion 41 in a state where the movement in the rotation axis AX direction is prohibited by the pair of restricting portions 25 and 26. Supported (see FIG. 4).

  Therefore, for example, even if the holder member 20 expands due to a cooling cycle or the like and increases in size, the increase due to the gap S is absorbed, thereby ensuring a gap necessary for the rotation of the holder member 20 at all times and regulating the holder member 20. Since the movement in the direction of the rotation axis AX is restricted by the portions 25 and 26, rattling does not occur.

  As described above, in the present embodiment, the display unit (element) 2 and the reflection member 10 are accommodated in the housing 1 in which the emission portion 8 is formed, and the display light L of the display unit 2 is reflected through the reflection member 10. A head-up display device that performs display by irradiating a windshield (predetermined irradiating member) 7 through an emitting portion 8, and is provided so as to hold the reflecting member 10 and to rotate about a predetermined rotational axis AX. The holder member 20 is provided with support portions 31 and 41 that are provided in the housing 1 and support the holder member 20 rotatably about the rotation axis AX. The holder member 20 includes the reflecting member 10 along the rotation axis AX. A pair of first and second supported parts 23, 24 provided to sandwich the first supported part 23 is provided, and the support parts 31, 41 support the first supported part 23 and the second supported part 23. It consists of a second support part 41 that supports the supported part 24, and the first supported part 23 moves in the direction of the rotation axis AX between the first supported part 31 and the first supported part 23. And a regulating portion 25 that regulates the movement of the second supported portion 24 in the direction of the rotation axis AX on the side where the second supported portion 41 and the second supported portion 24 are disposed. , 26 can be used to manage and suppress rattling without using a dedicated urging member, thereby reducing the number of parts and the number of assembly steps.

  In the present embodiment, the first and second support portions 31 and 41 are formed as separate parts from the housing 1, and are attached and fixed to the housing 1, so that when the holder member 20 is assembled to the housing 1, the housing 1 In addition, at least one of the first and second support portions 31 and 41 is assembled to the holder member 20 first, and at least one of the first and second support portions 31 and 41 is prevented. Since the holder member 20 can be attached by fixing one side to the housing 1, the assembly workability can be improved.

  Further, in the present embodiment, the second support portion 41 is formed on the second support member 40 which is a separate part from the housing 1, and the support member 40 is formed in a box shape, so that the second support portion 40 is formed. The rigidity of the 2nd support member 40 in which the part 41 is formed can be improved, and intensity | strength can be ensured.

  In the present embodiment, the partition member 44 is provided on the support member 40 to further increase the rigidity.

  In the present embodiment, the restricting portions 25 and 26 are provided using the protruding pieces 28 of the holding portion 21. However, the restricting portion includes the second support portion 41 and the second supported portion 24. On the side, that is, the side opposite to the side where the first support part 41 and the first supported part 23 are arranged with the reflecting member 10 interposed therebetween, in the direction of the rotation axis AX of the second supported part 24 It is only necessary to be provided so as to be able to restrict the movement to the second support portion 24, and it is not necessarily required to be provided in the vicinity of the second supported portion 24, and the formation target is not limited to the holder member 20, but the holder member 20 And any other member including the second support member 40 may be provided.

  Further, in the present embodiment, the first support portion 31 has a protruding shape and the first supported portion 23 has a cylindrical shape, but the shape is arbitrary as long as both can be connected via the gap S.

1 is a schematic diagram showing the overall configuration of a head-up display device according to an embodiment of the present invention. The disassembled perspective view of the reflection unit in the embodiment. The front view of the reflection unit in the embodiment. AA sectional drawing of FIG. The side view of the reflection unit in the embodiment. The perspective view of the 2nd supporting member in the embodiment. The principal part sectional drawing explaining the assembly | attachment of the 2nd support member in the embodiment. The principal part sectional drawing explaining the assembly | attachment of the 2nd supporting member in the same embodiment similarly.

Explanation of symbols

1 Housing 2 Display Unit 3 Backlight Unit (Lighting Means)
4 Plane mirror 5 Reflecting unit 6 Actuator 6a Output gear 7 Windshield (predetermined irradiation member)
8 emitting portion 9 translucent cover 10 reflecting member 20 holder member 21 holding portion 22 gear portion 23, 24 first and second supported portions 25, 26 regulating portion 27 extending portion 28 protruding piece 30, 40 first and first 2 support members 31, 41 first and second support portions 32 first attachment fixing portions 42 second attachment fixing portions 43 peripheral wall portions 44 partition portions 45 introduction grooves 50 first attachment portions 60 second attachment portions AX axis of rotation L Display light (display image)
P Crew S Clearance

Claims (3)

A head-up in which a display element and a reflection member are accommodated in a housing in which an emission part is formed, and display is performed by reflecting display light of the display element through the reflection member and irradiating a predetermined irradiation member through the emission part. A display device,
A holder member provided to hold the reflecting member and to be rotatable about a predetermined rotation axis;
A support portion provided in the housing and supporting the holder member so as to be rotatable about the rotation axis;
The holder member is provided with a pair of first and second supported portions provided so as to sandwich the reflecting member along the rotation axis.
The support portion includes a first support portion that supports the first supported portion and a second support portion that supports the second supported portion,
A gap is provided between the first support portion and the first supported portion to allow movement of the first supported portion in the rotational axis direction,
A head having a restricting portion for restricting movement of the second supported portion in the rotational axis direction on a side where the second supporting portion and the second supported portion are disposed. Up display device. 2. The head-up display device according to claim 1, wherein at least one of the first and second support portions is formed as a separate component from the housing and is fixedly attached to the housing. 2. The head-up display device according to claim 1, wherein the second support portion is formed on a support member that is a separate component from the housing, and the support member is formed in a box shape.

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