CN218197927U - Head-up display device - Google Patents

Abstract

The utility model provides a head-up display device that can make the equipment simple. A head-up display device (100) displays a virtual image by projecting display light (L) onto a windshield. A head-up display device (100) is provided with: a light source (16 a); a display panel (12) that receives light from the light source (16 a) and emits display light (L); a lamp box (40) which is formed in a tubular shape surrounding an optical path from the light source (16 a) to the display panel (12) and supports the display panel (12); and a display shielding member (11) which cuts off noise emitted from the display panel (12). The display shielding member (11) is provided with: a frame portion located on the outer peripheral side of a light emitting surface of the display panel (12) that emits display light (L); and a locking part which is locked on the lamp box (40) to enable the display panel (12) to be clamped between the frame part and the lamp box (40).

Description

Head-up display device

Technical Field

The utility model relates to a head-up display device.

Background

For example, a head-up display device described in patent document 1 includes: a light source; a lens group for collimating and diffusing light from the light source; a display panel that receives light from the light source via the lens group and emits display light for displaying an image; a lamp box for accommodating the light source and the lens group, and making the light from the light source reach the display panel without leaking to the outside; a light shielding plate which is a metal member surrounding the periphery of the display panel; and a display panel cover which holds the light shielding plate and the display panel and is embedded in the lamp box.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2019-45531

The head-up display device described in patent document 1 is difficult to assemble. For example, it is necessary to provide a light shielding plate after providing a display panel on a lamp box, and then embed a display panel cover in the lamp box, which makes assembly difficult. Further, for example, it is necessary to fix a condenser lens (condenser lens) and a lenticular lens (lenticular lens) constituting a lens group in the lamp box by using a positioning pin or the like, respectively, and assembly is difficult.

SUMMERY OF THE UTILITY MODEL

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a head-up display device which can be easily assembled.

In order to achieve the above object, a head-up display device according to a first aspect of the present invention is a head-up display device that displays a virtual image by projecting display light onto a projection target member, the head-up display device including: a light source; a display panel that receives the light from the light source and emits the display light; a lamp box formed in a cylindrical shape surrounding an optical path from the light source to the display panel and supporting the display panel; and a display shielding member that blocks noise emitted from the display panel, the display shielding member including: a frame portion located on an outer peripheral side of a light emitting surface of the display panel that emits the display light; and a locking portion that is locked to the lamp box so that the display panel is sandwiched between the frame and the lamp box.

In order to achieve the above object, according to a second aspect of the present invention, there is provided a head-up display device for displaying a virtual image by projecting display light onto a member to be projected, the head-up display device including: a light source; a first lens and a second lens which are arranged along an optical axis direction of the light from the light source and transmit the light from the light source; a display panel that receives the light from the light source that has passed through the first lens and the second lens and emits the display light; and a lamp housing formed in a cylindrical shape surrounding an optical path from the light source to the display panel, and supporting the first lens, the second lens, and the display panel, the lamp housing including: a lens setting part that sets the first lens in an inner space of the lamp box; and a lens pressing portion that presses the second lens toward the first lens and the lens setting portion.

Effect of the utility model

According to the utility model discloses, in head up display device, can make the equipment simplification.

Drawings

Fig. 1 is a schematic view of a vehicle on which a head-up display device according to a first embodiment of the present invention is mounted.

Fig. 2 is a schematic cross-sectional view of a head-up display device according to a first embodiment of the present invention.

Fig. 3 is an exploded perspective view of a diffusion plate and a lamp box according to a first embodiment of the present invention.

Fig. 4 is a plan view of the display panel and the lamp box according to the first embodiment of the present invention and an enlarged view of a part of the plan view.

Fig. 5 is a plan view of the display shield member, the display panel, and the lamp box according to the first embodiment of the present invention, and an enlarged view of a part of the plan view.

Fig. 6 is a view as viewed from an arrow F7 of fig. 5.

Fig. 7 is a view as viewed from an arrow F8 of fig. 5.

Fig. 8 is a perspective view of the display shielding member and the light source substrate according to the first embodiment of the present invention.

Fig. 9 is a perspective view of a lamp box according to a first embodiment of the present invention.

Fig. 10 is a perspective view of a lamp box according to a first embodiment of the present invention.

Fig. 11 is a perspective view of a first lenticular lens and a second lenticular lens according to a first embodiment of the present invention.

Fig. 12 is a front view of a first lenticular lens according to the first embodiment of the present invention.

Fig. 13 is a rear view of the second lenticular lens according to the first embodiment of the present invention.

Fig. 14 is a perspective view of the first lenticular lens and the lamp box according to the first embodiment of the present invention and an enlarged view of a part of the perspective view.

Fig. 15 is a perspective view of the second cylindrical lens and the lamp box according to the first embodiment of the present invention and an enlarged view of a part of the perspective view.

Fig. 16 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 15.

Fig. 17 is a sectional view taken along line B-B of fig. 15.

Fig. 18 is a perspective view of a first lenticular lens and a second lenticular lens according to a second embodiment of the present invention.

Fig. 19 is a perspective view of a first lenticular lens according to a second embodiment of the present invention.

Fig. 20 is a perspective view of a second cylindrical lens according to a second embodiment of the present invention.

Fig. 21 is a perspective view of a lamp box according to a second embodiment of the present invention.

Fig. 22 is a perspective view of a lens support part of a lamp box according to a second embodiment of the present invention.

Description of the symbols

1. Visually recognizing the person

10. Display unit

11. Display shielding member

11a, 11b, 11c, 11d fitting holes

11e frame part

11f1, 11f2 locking part

11g1, 11g2 feet

12. Display panel

12a pressing surface

12b adhesive member

12c light exit surface

13. A first cylindrical lens

13a, 13b, 14a, 14b positioning part

13a1, 13b1, 14a1, 14b1 base parts

13a2, 13b2, 14a2, 14b2 front end parts

13c, 14c center line

13a3, 14a3 side

13a4, 14a4 end face

13f, 13g, 14g contact part

13k, 14k outer frame portion

13m, 14m lens body

13s1, 14s1 first side

13s2, 14s2 second side

13u1 to 13u3, 13j1, 13j2 contact part

13r1, 13r2 rib

13z, 14z parting line (parting line)

14. Second cylindrical lens

14o, 14p, 14q are pressed

14u1 to 14u3, 14j1, 14j2 contact part

14r1 to 14r5 first ribs

14v1 to 14v4 second rib

15. Condensing lens

16. Light source substrate

16a light source

16z terminal

17. Heat radiator

19. Diffusion plate

19a, 19b through hole

20. Reflecting mirror

30. Concave mirror

40. Lamp box

41. Cylinder part

41a supporting end face

41b, 41c diffusion plate supporting claw

41s1 first side wall

41s2 second side wall

42a, 42b, 42c, 42d positioning rib

42e, 42f rotation restricting ribs

42g display panel positioning part

42h shield positioning part

42g1 upper surface

43a, 43b locking ribs

45a lens setting part

46a, 46b lens support

46a1, 46b1 first receiving portion

46a2, 46b2 second receiving portion

46a3, 46b3 receiving bottom

46g, 46h, 46i, 46j wall parts

46c, 46d, 46e, 46f, 46k reinforce the wall section

47a, 47b, 47c lens pressing part

47a1 inclined plane

48a, 48b, 48c window portion

60. Box body

60a opening part

61. Upper shell

62. Middle shell

62a light passing hole

62c back side

63. Mirror holding case

68. Lower casing

68a exposure hole

70. Control substrate

80. 90 substrate shielding member

100. Head-up display device

200. Vehicle with a steering wheel

201. Windscreen

C1, 11C1 first corner

Second corner of C2, 11C2

C3 Third corner

L display light

Virtual image of V

W width direction

As1, as2 symmetry axes

Ax rotating shaft

Sp light path space

Sc accommodating space

Detailed Description

(first embodiment)

A first embodiment of a head-up display device according to the present invention will be described with reference to fig. 1 to 17.

As shown in fig. 1, the head-up display device 100 is mounted in an instrument panel of a vehicle 200. The head-up display device 100 emits display light L representing an image toward a windshield 201, which is an example of a projected member of the vehicle 200. The display light L is reflected by the windshield 201 and reaches the viewer 1 (mainly the driver of the vehicle 200). Thus, the head-up display device 100 displays the virtual image V including the vehicle information so that the viewer 1 can visually recognize it.

As shown in fig. 2, the head-up display device 100 includes a display unit 10, a reflecting mirror 20, a concave mirror 30, a mirror holding case 63, a box 60, a control board 70, and board shielding members 80 and 90.

As shown in fig. 2, the display unit 10 includes a light emitting surface 12c that emits display light L representing an image under the control of the control board 70. The specific structure of the display unit 10 will be described in detail later. Mirror 20 reflects display light L from display unit 10 toward concave mirror 30. The mirror holding case 63 is formed of resin, and holds the mirror 20 in a state where the reflecting surface of the mirror 20 is exposed.

Concave mirror 30 enlarges and reflects display light L reflected by reflecting mirror 20 toward windshield 201. Concave mirror 30 is supported rotatably about a rotation axis Ax along the vehicle width direction in an intermediate case 62 described later of box 60.

As shown in fig. 2, the casing 60 is formed of a non-light-transmissive resin or metal, and has a hollow substantially rectangular parallelepiped shape. Each configuration of the head-up display device 100 is housed in the case 60.

An opening 60a is formed in the case 60 at a position facing the windshield 201 (see fig. 1). The case 60 includes a curved plate-like window plate 50 that closes the opening 60a. The window plate 50 is made of a light-transmitting resin such as acrylic through which the display light L passes.

Specifically, as shown in fig. 2, the case 60 includes an upper case 61, a middle case 62, and a lower case 68.

The middle case 62 has a box shape opened in the upward direction. In accommodation space Sc in middle case 62, mirror holding case 63 that holds reflecting mirror 20 and concave mirror 30 are accommodated. The display unit 10, the control board 70, and the board shielding members 80 and 90 are fixed to the rear surface 62c of the middle case 62.

A light passage hole 62a is formed in the bottom surface of the housing space Sc of the middle case 62. The light passing hole portion 62a is a through hole through which the display light L from the display unit 10 passes. The light exit surface 12c of the display unit 10 is disposed at a position facing the light passage hole portion 62a of the middle housing 62.

The head-up display device 100 includes a mirror driving unit not shown. The mirror driving unit rotates concave mirror 30 about rotation axis Ax.

The substrate shielding members 80 and 90 are in the form of a metal plate and are positioned so as to sandwich the control substrate 70 from the thickness direction of the control substrate 70. The substrate shielding members 80 and 90 can block electromagnetic noise from a portable terminal such as a smartphone and suppress adverse effects of the electromagnetic noise on the control substrate 70.

The lower case 68 has a box shape opened upward, and is attached to the lower portion of the middle case 62 so as to cover the rear surface 62c of the middle case 62 to which the substrate shielding members 80 and 90 and the control substrate 70 are fixed. The lower case 68 is formed with an exposure hole 68a as a through hole for exposing the later-described heat sink 17 of the display unit 10 to the outside.

Next, the display unit 10 will be described in detail.

As shown in fig. 2, the display unit 10 includes a display shielding member 11, a display panel 12, a condenser lens 15, a first lenticular lens 13, a second lenticular lens 14, a light source substrate 16 on which a plurality of light sources 16a are mounted, a heat sink 17, a diffusion plate 19, an adhesive member 12b, and a lamp box 40.

As shown in fig. 3 to 17, the Z direction is defined as the optical axis direction of the light from the light source 16a, and the X direction and the Y direction are defined as directions orthogonal to each other and to the Z direction. The X direction is along the long side direction of the display unit 10, and the Y direction is along the short side direction of the display unit 10.

As shown in fig. 2, each Light source 16a is formed of an LED (Light Emitting Diode), and is mounted on a mounting surface of the Light source substrate 16 facing the condenser lens 15. Each light source 16a emits light toward the condenser lens 15.

As shown in fig. 8, two terminals 16z are provided on the mounting surface of the light source substrate 16. Each terminal 16Z is made of metal, is formed in a zigzag shape, is elastically deformable in the Z direction, and is connected to the ground terminal of the light source substrate 16. Each terminal 16z is in contact with the tip of each leg 11g1, 11g2 of the display shield member 11, which will be described later.

As shown in fig. 2, the heat sink 17 absorbs and dissipates heat of the light source substrate 16. The heat sink 17 is positioned on the back surface of the light source substrate 16 on which the light source 16a is not mounted, and is exposed to the outside of the head-up display device 100 through the exposure hole 68a of the lower case 68.

The condenser lens 15 collimates the light from the light source 16a and then emits the collimated light toward the second cylindrical lens 14.

The second cylindrical lens 14 diffuses the light from the light source 16a passing through the condenser lens 15 in the Y direction and emits the diffused light to the first cylindrical lens 13. This uniformizes the light in the Y direction.

As shown in fig. 11 and 13, the second cylindrical lens 14 includes a lens body portion 14m, an outer frame portion 14k, positioning portions 14a, 14b, a plurality of contact portions 14g, and pressed portions 14o, 14p, 14q.

The lens body 14m is a light-transmitting portion, has a rectangular plate shape, and has fine semicylinders extending in the X direction and arranged in the Y direction on the front and back surfaces of the lens body 14 m.

The outer frame portion 14k is located around the lens main body portion 14m, and has a rectangular frame plate shape extending in the same direction as the lens main body portion 14 m.

The plurality of contact portions 14g are provided on the surface of the outer frame portion 14k facing the first lenticular lens 13. One contact portion 14g is provided at each of the four corners of the outer frame portion 14k. The contact portion 14g is formed in a disc shape and contacts a contact portion 13g of the first lenticular lens 13, which will be described later. The abutting portion 14g is provided to position the second lenticular lens 14 in the Z direction with respect to the first lenticular lens 13 while ensuring a gap between the first lenticular lens 13 and the second lenticular lens 14.

As shown in fig. 13, the positioning portions 14a, 14b are provided one at each of both ends of the second lenticular lens 14 in the X direction. The two positioning portions 14a and 14b are formed asymmetrically around an axis of symmetry As2 extending in the Y direction. The axis of symmetry As2 is located at the center of the second lenticular lens 14 in the X direction. The shapes of the two positioning portions 14a, 14b are different from each other, and the positions in the Y direction are different. The positioning portions 14a and 14b are plate-shaped along the lens main body portion 14m and the outer frame portion 14k.

As shown in fig. 13, the positioning portion 14a is provided on the first side surface 14s1 of the second lenticular lens 14 extending in the Y direction. The positioning portion 14b is provided on the second side surface 14s2 of the second lenticular lens 14 extending in the Y direction. The first side surface 14s1 and the second side surface 14s2 are parallel to each other.

The positioning portion 14a includes a base portion 14a1 and a tip portion 14a2.

The base portion 14a1 has a rectangular plate shape elongated in the Y direction. The distal end portion 14a2 is located on the opposite side of the lens main body portion 14m from the base portion 14a1 in the X direction. The distal end portion 14a2 has a rectangular plate shape elongated in the Y direction. The length of the distal end portion 14a2 in the width direction W in the Y direction is set smaller than the length of the base portion 14a1 in the width direction W. The base portion 14a1 and the tip portion 14a2 are formed centering on a center line 14c along the X direction of the second cylindrical lens 14.

The positioning portion 14b includes a base portion 14b1 and a tip portion 14b2.

The base portion 14b1 has a rectangular plate shape elongated in the Y direction. The length of the base portion 14b1 in the width direction W is set smaller than the length of the base portion 14a1 in the width direction W. The base portion 14b1 is provided at a position shifted from the center line 14 c. The distal end portion 14b2 is located on the opposite side of the lens main body portion 14m from the base portion 14b1 in the X direction. The distal end portion 14b2 has a rectangular plate shape elongated in the Y direction. The length of the distal end portion 14b2 in the width direction W in the Y direction is set to be smaller than the length of the base portion 14b1 in the width direction W and is set to be smaller than the length of the distal end portion 14a2 in the width direction W. The base portion 14b1 and the tip portion 14b2 are formed at positions shifted in the Y direction with respect to the center line 14c of the second lenticular lens 14.

As shown in an enlarged view in the lower part of fig. 15, the side surface 14a3 of the tip end portion 14a2 along the X direction comes into contact with a second receiving portion 46a2 of a lens support portion 46a of the lamp box 40, which will be described later, whereby the first lenticular lens 13 is positioned in the Y direction. In addition, the end face 14a4 of the base portion 14a1 along the Y direction is in contact with a second receiving portion 46a2 of a lens supporting portion 46a of the lamp box 40, which will be described later, whereby the first lenticular lens 13 is positioned in the X direction. Similarly, the base portion 14b1 and the tip portion 14b2 are also in contact with a second receiving portion 46b2 of a lens support portion 46b of the lamp box 40, which will be described later, and the first lenticular lens 13 is positioned in the X direction and the Y direction.

As shown in fig. 15, the pressed portions 14o, 14p, and 14q are portions pressed by lens pressing portions 47a, 47b, and 47c, which will be described later, of the lamp box 40 so as to press the second lenticular lens 14 toward the first lenticular lens 13.

As shown in fig. 13, the pressed portions 14o, 14p, and 14q each have a rectangular plate shape extending along the lens body portion 14m and the outer frame portion 14k, and are provided on the outer peripheral surface of the outer frame portion 14k.

The pressed portion 14q is provided on the side surface of the first side portion 14k1 in the X direction in the outer frame portion 14k, and is located at the center portion of the first side portion 14k1 in the X direction.

The pressed portions 14o and 14p are arranged on the side surface of the second side portion 14k2 of the outer frame portion 14k. The second side portion 14k2 is parallel to the first side portion 14k1 of the outer frame portion 14k along the X direction. The pressed portions 14o and 14p are arranged so as to sandwich the pressed portion 14q in the X direction.

The first lenticular lens 13 diffuses the light from the light source 16a passing through the second lenticular lens 14 in the X direction and emits the diffused light to the display panel 12. This uniformizes the light in the X direction.

As shown in fig. 11 and 12, the first lenticular lens 13 includes a lens main body portion 13m, an outer frame portion 13k, positioning portions 13a and 13b, and a plurality of contact portions 13f and 13g.

The lens body 13m is a portion through which light passes, and has a rectangular plate shape. As shown in fig. 12, the rear surface of the lens body 13m is shaped such that fine semicylinders extending in the Y direction are aligned in the X direction. As shown in fig. 11, the surface of the lens body 13m is in the shape of a concave lens curved in the X direction.

The outer frame portion 13k is located around the lens main body portion 13m and has a rectangular frame plate shape.

The plurality of contact portions 13g are provided on the surface of the outer frame portion 13k facing the second cylindrical lens 14. One contact portion 13g is provided at each of the four corners of the outer frame portion 13k. The tip of the contact portion 13g is formed in a flat hemispherical shape, and the flat surface portion thereof is in surface contact with the contact portion 14g of the second lenticular lens 14. The abutting portion 13g ensures a gap between the first lenticular lens 13 and the first lenticular lens 13.

The plurality of contact portions 13f are provided on the surface of the outer frame portion 13k opposite to the surface on which the contact portions 13g are provided, that is, the surface facing the display panel 12. The contact portions 13f are provided at four corners of the outer frame portion 13k, respectively. The abutting portion 13f has a rectangular plate shape and is in contact with a lens setting portion 45a (see fig. 16) of the lamp box 40, which will be described later, and the abutting portion 13g is provided to position the first lenticular lens 13 in the Z direction in the optical path space Sp of the lamp box 40.

As shown in fig. 12, the positioning portions 13a and 13b are provided one at each of both ends of the first lenticular lens 13 in the X direction. The two positioning portions 13a, 13b are formed asymmetrically with the center at the axis of symmetry As1 extending in the Y direction. The axis of symmetry As1 is located at the center of the first lenticular lens 13 in the X direction. The two positioning portions 13a, 13b are different in shape from each other, and are different in position in the Y direction. The positioning portions 13a and 13b are plate-shaped along the lens main body portion 13m and the outer frame portion 13k.

The positioning portion 13a is provided on the first side surface 13s1 of the first lenticular lens 13 extending in the Y direction. The positioning portion 13b is provided on the second side surface 13s2 of the first lenticular lens 13 extending in the Y direction. The first side surface 13s1 and the second side surface 13s2 are parallel to each other.

The positioning portion 13a includes a base portion 13a1 and a tip portion 13a2.

The base portion 13a1 has a rectangular plate shape elongated in the Y direction. The distal end portion 13a2 is located on the opposite side of the lens body portion 13m from the base portion 13a1 in the X direction. The distal end portion 13a2 has a rectangular plate shape elongated in the Y direction. The length of the distal end portion 13a2 in the width direction W along the Y direction is set smaller than the length of the base portion 13a1 in the width direction W. The base portion 13a1 and the tip portion 13a2 are formed centering on a center line 13c along the X direction of the first lenticular lens 13.

The positioning portion 13b includes a base portion 13b1 and a tip portion 13b2.

The base portion 13b1 has a rectangular plate shape elongated in the Y direction. The length of the base portion 13b1 in the width direction W is set smaller than the length of the base portion 13a1 in the width direction W. The base portion 13b1 is provided at a position shifted from the center line 13 c. The distal end portion 13b2 is located on the opposite side of the lens body portion 13m from the base portion 13b1 in the X direction. The distal end portion 13b2 has a rectangular plate shape elongated in the Y direction. The length of the distal end portion 13b2 in the width direction W is set to be smaller than the length of the base portion 13b1 in the width direction W and is set to be smaller than the length of the distal end portion 13a2 in the width direction W. The base portion 13b1 and the tip portion 13b2 are formed at positions shifted in the Y direction with respect to the center line 13c of the first lenticular lens 13.

As shown in an enlarged view in the lower part of fig. 14, the side surface 13a3 of the distal end portion 13a2 along the X direction comes into contact with a first receiving portion 46a1 of a lens supporting portion 46a of the lamp box 40, which will be described later, whereby the first lenticular lens 13 is positioned in the Y direction. In addition, the end surface 13a4 of the base portion 13a1 along the Y direction is in contact with a first receiving portion 46a1 of a lens supporting portion 46a of the lamp box 40, which will be described later, whereby the first lenticular lens 13 is positioned in the X direction. Similarly, the base portion 13b1 and the distal end portion 13b2 are also in contact with a first receiving portion 46b1 of a lens support portion 46b, which will be described later, of the lamp box 40, whereby the first lenticular lens 13 is positioned in the X direction and the Y direction with respect to the lamp box 40.

As shown in fig. 2, the lamp box 40 is made of light-shielding resin, houses the display shielding member 11, the display panel 12, the condenser lens 15, the first lenticular lens 13, and the second lenticular lens 14, and surrounds the light path from the light source 16a to the display panel 12.

Specifically, as shown in fig. 3, the lamp box 40 includes: a cylindrical portion 41 having a support end surface 41 a; diffusion plate supporting claws 41b, 41c; positioning ribs 42a, 42b, 42c, 42d; rotation restricting ribs 42e, 42f; and locking ribs 43a, 43b.

The cylindrical portion 41 has a rectangular cylindrical shape. An optical path space Sp through which light from the light source 16a passes is formed in the internal space of the cylindrical portion 41. The support end surface 41a is a rectangular frame-shaped flat surface located on the upper end surface of the cylindrical portion 41 and supporting the outer periphery of the diffusion plate 19. The diffuser plate 19 diffuses the light having passed through the first and second lenticular lenses 13 and 14 and emits the light to the display panel 12. The diffuser plate 19 is formed with through holes 19a, 19b penetrating in the thickness direction of the diffuser plate 19 and into which the diffuser plate support claws 41b, 41c are fitted, respectively. The diffuser plate support claws 41b and 41C are located at the center in the X direction of the support end surface 41a and are provided at positions facing each other with the optical path space Sp therebetween in the Y direction.

As shown in fig. 4, the positioning ribs 42a, 42b are provided corresponding to the first corner C1 of the display panel 12, and the positioning ribs 42C, 42d are provided corresponding to the second corner C2 located on the diagonal of the first corner C1 of the display panel 12.

The positioning ribs 42b and 42c are provided at different positions in the Y direction, and are positioned so as to sandwich the display panel 12 from the X direction. Therefore, the positioning ribs 42b, 42c position the display panel 12 to the lamp box 40 in the X direction.

The positioning ribs 42a and 42d are provided at different positions in the X direction, and are positioned so as to sandwich the display panel 12 from the Y direction. Therefore, the positioning ribs 42a, 42d position the display panel 12 to the lamp box 40 in the Y direction.

The positioning ribs 42a, 42b, 42c, 42d are formed in an L-shaped column shape. As shown in fig. 6 and 7, the positioning ribs 42a, 42b, 42c, and 42d include a display panel positioning portion 42g and a shield positioning portion 42h, respectively.

The display panel positioning portion 42g determines the positions of the display panel 12 in the X direction and the Y direction by contacting the side surface of the display panel 12. The display panel positioning portion 42g has a rectangular column shape extending along the side surface of the display panel 12.

As shown in fig. 3, the display panel positioning portion 42g of each of the positioning ribs 42a, 42d extends along the X direction. The display panel positioning portions 42g of the positioning ribs 42b, 42c extend in the Y direction.

As shown in fig. 6 and 7, the shield positioning portion 42h is located on the upper surface 42g1 of the display panel positioning portion 42g, and has a cubic shape. The shield positioning portions 42h of the positioning ribs 42a, 42b, 42c, and 42d are fitted into fitting holes 11a, 11b, 11c, and 11d (see fig. 5) of the display shield member 11, which will be described later, to position the display shield member 11 in the X direction and the Y direction on the lamp box 40. As shown in fig. 5, the fitting holes 11a, 11b, 11c, and 11d are formed as cutouts. The fitting holes 11a, 11b, 11c, and 11d are not limited to the cutouts, and may be formed as through holes.

As shown in fig. 3 and 4, the rotation restricting ribs 42e and 42f are provided corresponding to a third corner portion C3 of the display panel 12 different from the first corner portion C1 and the second corner portion C2. The rotation restricting ribs 42e and 42f each have a cubic shape and contact the side surface of the display panel 12 to suppress rotation of the display panel 12. The rotation restriction rib 42e abuts against a side surface of the display panel 12 extending in the Y direction, and the rotation restriction rib 42f abuts against a side surface of the display panel 12 extending in the X direction.

As shown in fig. 3, 5, and 7, the locking ribs 43a and 43b fix the display shielding member 11 to the lamp box 40 by fitting locking portions 11f1 and 11f2, which will be described later, of the display shielding member 11. The locking rib 43a is provided at a position corresponding to the positioning rib 42d on the outer peripheral surface of the cylindrical portion 41. The locking rib 43b is provided at a position corresponding to the positioning rib 42a on the outer peripheral surface of the cylindrical portion 41. The locking ribs 43a, 43b are arranged in the vicinity of the diagonal line of the rectangular tubular cylinder 41.

As shown in fig. 10, the light box 40 includes: lens support sections 46a, 46b; a lens setting part 45a; lens pressing portions 47a, 47b, 47c; and window portions 48a, 48b, 48c.

The lens support portions 46a and 46b support the first lenticular lens 13 and the second lenticular lens 14 in the cylindrical portion 41. The lens support portions 46a and 46b are open downward on the side opposite to the support end face 41a. The lens support portions 46a and 46b are provided one on each of the two inner surfaces of the cylindrical portion 41 facing in the X direction. The lens support portions 46a, 46b are provided at positions different from each other in the Y direction.

The lens support portion 46a includes two wall portions 46i and 46j facing each other in the Y direction, and reinforcing wall portions 46e and 46f provided corresponding to the wall portions 46i and 46j, respectively. The wall portions 46i and 46j have a rectangular plate shape elongated in the Z direction. Between the wall portions 46i, 46j, the positioning portion 13a of the first lenticular lens 13 and the positioning portion 14a of the second lenticular lens 14 are supported.

The reinforcing wall portion 46e and the wall portion 46i are integrally formed in an L-shaped plate shape, and both ends of the integrated reinforcing wall portion 46e and the wall portion 46c are connected to the inner surface of the tube portion 41. The reinforcing wall portion 46e is formed between the front end of the wall portion 46i in the X direction and the inner surface of the cylinder portion 41, and has a plate shape extending in the Y direction and the Z direction in a direction away from the lens support portion 46 a.

The reinforcing wall 46f and the wall 46j are integrally formed in an L-shaped plate shape, and both ends of the integrated reinforcing wall 46f and the wall 46j are connected to the inner surface of the tube 41. The reinforcing wall portion 46f is formed between the front end of the wall portion 46j in the X direction and the inner surface of the cylinder portion 41, and has a plate shape extending in the Y direction and the Z direction in a direction away from the lens support portion 46 a. The reinforcing wall portions 46e and 46f are provided to enhance the strength of the light box 40. The lens support portion 46b includes two wall portions 46g and 46h and two reinforcing wall portions 46c and 46d, similarly to the lens support portion 46 a.

As shown enlarged in the upper part of fig. 17, the lens support portion 46b includes: a second receiving portion 46b2 that receives the front end portion 14b2 of the positioning portion 14b of the second lenticular lens 14; and a first receiving portion 46b1 that receives the front end portion 13b2 of the positioning portion 13b of the first lenticular lens 13.

The first receiving portion 46b1 and the second receiving portion 46b2 are respectively connected to each other with a step in the Z direction as the length of the hole in the width direction W in the Y direction becomes smaller as approaching the display panel 12.

The second receiving portion 46b2 sandwiches the distal end portion 14b2 of the positioning portion 14b from the Y direction (width direction W) to support the distal end portion 14b2. The first receiving portion 46b1 is located closer to the display panel 12 than the second receiving portion 46b2. The first receiving portion 46b1 supports the distal end portion 13b2 by sandwiching the distal end portion 13b2 of the positioning portion 13b from the Y direction (width direction W).

As shown in fig. 14, the lens support portion 46a includes, similarly to the lens support portion 46b, in an enlarged manner in the lower portion: a first receiving portion 46a1 that receives the front end portion 13a2 of the positioning portion 13a of the first lenticular lens 13; and a second receiving portion 46a2 that receives the front end portion 14a2 of the positioning portion 14a of the second lenticular lens 14, as shown enlarged in the lower part of fig. 15.

The first receiving portion 46a1 and the second receiving portion 46a2 are connected to each other in a stepwise manner in the Z direction, with the length of the hole in the width direction W becoming smaller as the display panel 12 approaches.

As shown in an enlarged view in the lower portion of fig. 14, the first receiving portion 46a1 supports the distal end portion 13a2 of the positioning portion 13a by sandwiching the distal end portion 13a2 from the width direction W. The first receiving portion 46a1 is located closer to the display panel 12 than the second receiving portion 46a 2. As shown in an enlarged view in the lower portion of fig. 15, the second receiving portion 46a2 supports the distal end portion 14a2 of the positioning portion 14a by sandwiching the distal end portion 14a2 from the width direction W.

As shown in fig. 10 and 14, the plurality of lens arrangement portions 45a are respectively provided on the inner surface of the cylindrical portion 41, and support the first lenticular lens 13 from the Z direction. The lens arrangement portions 45a each have a columnar shape extending in the Z direction, and extend in the Z direction from the back surface of the support end surface 41a along the inner wall surface of the cylindrical portion 41. As shown enlarged in the upper part of fig. 16, the lens setting portion 45a is provided corresponding to the abutting portion 13f of the first lenticular lens 13, and is in contact with the corresponding abutting portion 13 f. Thereby, the lens setting part 45a positions the first lenticular lens 13 in the Z direction with respect to the lamp box 40.

As shown in fig. 9, the window portions 48a, 48b, and 48c are provided as through holes in the side wall of the tube portion 41.

The lens pressing portions 47a, 47b, and 47c are provided at positions facing the window portions 48a, 48b, and 48c, respectively, and press the pressed portions 14o, 14p, and 14q of the second lenticular lens 14 toward the first lenticular lens 13 (see fig. 14), as shown in fig. 15 and 16. Thereby, the first lenticular lens 13 and the second lenticular lens 14 are fixed within the lamp box 40.

As shown in fig. 9, the lens pressing portions 47a, 47b, and 47c have a rectangular plate shape extending in the Z direction. The proximal end portions of the lens pressing portions 47a, 47b, and 47c are fixed to the tube portion 41, and the distal end portions of the lens pressing portions 47a, 47b, and 47c are provided at positions closer to the display panel 12 than the proximal end portions, and are formed so as to be elastically deformable in a bending manner toward the optical path space Sp. As shown enlarged in the upper part of fig. 16, the distal end portion of the lens pressing portion 47a includes an inclined surface 47a1 that presses the pressed portion 14q of the second lenticular lens 14 toward the first lenticular lens 13. The inclined surface 47a1 is inclined so as to be distant from the first lenticular lens 13 in the Z direction as approaching the center of the second lenticular lens 14. The other lens pressing portions 47b and 47c also have inclined surfaces that press the pressed portions 14o and 14p of the second cylindrical lens 14, similarly to the lens pressing portion 47a.

As shown in fig. 9, the cylindrical portion 41 includes a first side wall 41s1 and a second side wall 41s2 that extend in the X direction and face each other in the Y direction with the optical path space Sp interposed therebetween. On the first side wall 41s1 of the tube 41, two window portions 48b, 48c and two lens pressing portions 47b, 47c are aligned along the X direction. The second side wall 41s2 of the tube 41 is provided with a window 48a and a lens pressing portion 47a. The window portion 48a and the lens pressing portion 47a are located between the window portion 48b and the lens pressing portion 47b and the window portion 48c and the lens pressing portion 47c in the X direction.

As shown in fig. 9 and 16, the window portions 48a, 48b, and 48c expose the portions of the pressed portions 14o, 14p, and 14q pressed by the lens pressing portions 47a, 47b, and 47c to be visible from the outside of the lamp box 40. Therefore, the assembled state of the second cylindrical lens 14 can be visually recognized from the outside of the lamp box 40.

As shown in fig. 4, the display panel 12 is a transmissive display, for example, a Thin Film Transistor (TFT) type liquid crystal display panel. The display panel 12 has a rectangular plate shape, and is not a metal light shielding plate having an electromagnetic noise shielding effect. The display panel 12 includes a pressing surface 12a located on the outer periphery of the upper surface (light emitting surface 12 c) of the display panel 12. The display panel 12 is provided on the support end surface 41a of the lamp box 40 such that the side surface of the display panel 12 contacts the positioning ribs 42a, 42b, 42c, and 42d and the rotation restricting ribs 42e and 42f.

The Display panel 12 is not limited to the transmissive Display, and may be a self-luminous Display such as an Organic EL Display (OELD).

The adhesive member 12b is a double-sided tape having conductivity and cushioning properties, and is positioned between the pressing surface 12a of the display panel 12 and the display shielding member 11, and fixes the display shielding member 11 to the display panel 12. One adhesive member 12b is provided on each of two side portions extending in the Y direction of the rectangular frame-shaped pressing surface 12a. Since the adhesive member 12b has cushioning properties, stress concentration or impact applied from the display shielding member 11 to the display panel 12 can be reduced. For example, as shown in fig. 7, the upper surface of the adhesive member 12b is set at a position lower than the shield positioning portion 42h of the positioning rib 42 c. Thus, when the display shield member 11 is assembled to the lamp box 40, the shield positioning portion 42h is inserted into the fitting holes 11a, 11b, 11c, and 11d of the frame portion 11e, and then the frame portion 11e is brought into contact with and bonded to the upper surface of the bonding member 12b. Therefore, the frame portion 11e is prevented from being bonded to the adhesive member 12b in a state where the frame portion 11e is displaced from the display panel 12.

As shown in fig. 8, the display shielding member 11 includes: fitting holes 11a, 11b, 11c, 11d; a frame portion 11e; two locking portions 11f1, 11f2; and two leg portions 11g1, 11g2.

The frame 11e is shaped like a flat plate extending in the X direction and the Y direction, and has a rectangular frame shape extending in the X direction. The frame 11e is formed to cover the pressing surface 12a of the display panel 12 in the Z direction (see fig. 4).

The fitting holes 11a, 11b, 11c, and 11d are formed so as to open to the side opposite to the optical path space Sp in the frame portion 11 e. The fitting holes 11a and 11b are provided corresponding to the first corner 11c1 of the frame 11e, and the fitting holes 11c and 11d are provided corresponding to the second corner 11c2 located on the diagonal line of the first corner 11c1 of the frame 11 e. The fitting holes 11a, 11d extend in the Y direction and open in the Y direction, and the fitting holes 11b, 11c extend in the X direction and open in the X direction.

As shown in fig. 5, the positioning rib 42a of the lamp box 40 is fitted in the fitting hole 11a, the positioning rib 42b of the lamp box 40 is fitted in the fitting hole 11b, the positioning rib 42c of the lamp box 40 is fitted in the fitting hole 11c, and the positioning rib 42d of the lamp box 40 is fitted in the fitting hole 11d. The fitting holes 11a, 11d position the display shield member 11 in the X direction, and the fitting holes 11b, 11c position the display shield member 11 in the Y direction.

As shown in fig. 5 and 7, the two locking portions 11f1 and 11f2 extend from the outer peripheral edge of the frame 11e toward the lower side orthogonal to the frame 11e, and are fitted into the locking ribs 43a and 43b of the lamp box 40. The two locking portions 11f1, 11f2 are shaped like a frame plate surrounding the corresponding locking ribs 43a, 43b. As shown in fig. 8, the locking portion 11f1 is located at a position corresponding to the second corner portion 11c2 of the frame 11e, and the locking portion 11f2 is located at a position corresponding to the first corner portion 11c1 of the frame 11 e. The two locking portions 11f1 and 11f2 are provided closer to the center of the frame 11e than the fitting holes 11a and 11d in the X direction. The locking portions 11f1 and 11f2 are formed so as to be elastically deformable in the thickness direction of the locking portions 11f1 and 11f2 so that the locking portions 11f1 and 11f2 can fit into the locking ribs 43a and 43b.

As shown in fig. 5, the two locking portions 11f1 and 11f2 are fitted into the locking ribs 43a and 43b of the lamp box 40. Thereby, the display shielding member 11 is fixed to the lamp box 40 with the display panel 12 interposed between the display shielding member and the lamp box 40.

As shown in fig. 8, the two leg portions 11g1, 11g2 extend from the outer peripheral edge of the frame 11e in a direction perpendicular to the frame 11 e. The two legs 11g1, 11g2 are disposed at intervals in the X direction. The tips of the legs 11g1 and 11g2 are bent toward the optical path space Sp and contact the terminals 16z of the light source substrate 16. Thereby, the display shielding member 11 and the terminal 16z are in a conductive state, and electromagnetic noise emitted from the display panel 12 flows to the ground of the light source substrate 16 via the display shielding member 11 and the terminal 16z.

Next, a method of assembling the display unit 10 will be described. This assembly operation is performed by an operator or an operation robot.

First, a method of assembling the diffusion plate 19, the display panel 12, and the display shielding member 11 to the lamp box 40 will be described.

As shown in fig. 3, a diffusion plate 19 is provided on the support end surface 41a of the lamp box 40. At this time, the diffusion plate support claws 41b and 41c of the lamp box 40 are fitted into the through holes 19a and 19b of the diffusion plate 19.

Next, as shown in fig. 3 and 4, the display panel 12 is provided so as to cover the diffusion plate 19 on the support end face 41a of the lamp box 40. At this time, the positioning ribs 42a, 42b, 42c, 42d and the rotation restricting ribs 42e, 42f are in contact with the side surfaces of the display panel 12. Thereby, the display panel 12 is positioned.

Then, two adhesive members 12b are attached to the pressing surface 12a of the display panel 12. In this case, the range of the adhesive member 12b to be adhered may be indicated by the drawn lines on the pressing surface 12a of the display panel 12.

Next, as shown in fig. 4 and 5, the back surface of the frame 11e of the display shielding member 11 is fixed to the pressing surface 12a of the display panel 12 via the adhesive member 12b. At this time, when the frame portion 11e of the display shielding member 11 approaches the display panel 12, first, as shown in fig. 6 and 7, the movement of the frame portion 11e is guided by the shield positioning portion 42h in a state where the shield positioning portion 42h is inserted into the fitting holes 11a, 11b, 11c, and 11d of the frame portion 11e and the positions of the display shielding member 11 with respect to the X direction and the Y direction of the lamp box 40 are determined. Thereafter, when the frame portion 11e further approaches the display panel 12, the back surface of the frame portion 11e is bonded to the adhesive member 12b. As shown in fig. 5, the two locking portions 11f1 and 11f2 of the display shielding member 11 are fitted into the locking ribs 43a and 43b of the lamp box 40. Thus, the display shielding member 11 is fixed to the lamp box 40 in a state where the frame portion 11e of the display shielding member 11 sandwiches the pressing surface 12a of the display panel 12 with the support end surface 41a of the lamp box 40 via the adhesive member 12b. At this time, the adhesive member 12b is compressed between the pressing surface 12a of the display panel 12 and the frame 11e of the display shielding member 11.

Next, a method of assembling the first lenticular lens 13 and the second lenticular lens 14 to the lamp box 40 will be described.

As shown in fig. 10 and 14, the first lenticular lens 13 is disposed in the lens disposing portion 45a in the cylindrical portion 41. Thereby, the first lenticular lens 13 is positioned in the Z direction.

At this time, the distal end portions 13a2, 13b2 of the positioning portions 13a, 13b of the first lenticular lens 13 are fitted into the first receiving portions 46a1, 46b1 of the lens supporting portions 46a, 46b. Thereby, the first lenticular lens 13 is positioned in the X direction and the Y direction.

Next, as shown in fig. 15, the second lenticular lens 14 is inserted into the tube portion 41 so as to overlap the back surface of the first lenticular lens 13. At this time, as shown in fig. 16, each abutting portion 13g of the first lenticular lens 13 comes into contact with each abutting portion 14g of the second lenticular lens 14. Thereby, the second cylindrical lens 14 is positioned in the Z direction.

At this time, as shown in fig. 15, the distal end portions 14a2, 14b2 of the positioning portions 14a, 14b of the second lenticular lens 14 are fitted into the second receiving portions 46a2, 46b2 of the lens supporting portions 46a, 46b. Thereby, the second cylindrical lens 14 is positioned in the X direction and the Y direction.

At this time, as shown in fig. 15 and 16, the lens pressing portions 47a, 47b, and 47c press the pressed portions 14o, 14p, and 14q of the second lenticular lens 14 toward the first lenticular lens 13. Thereby, the first lenticular lens 13 and the second lenticular lens 14 are fixed inside the tube portion 41 of the lamp box 40. In this way, the two lenses, i.e., the first lenticular lens 13 and the second lenticular lens 14, can be fixed within the lamp box 40 by the lens pressing portions 47a, 47b, and 47c as a set of fixing means.

Then, the condenser lens 15, the light source substrate 16, and the heat sink 17 are stacked in this order on the back surface of the second cylindrical lens 14.

The above completes the description of the method of assembling the display unit 10.

As shown in fig. 13, the positioning portions 14a, 14b of the second lenticular lens 14 are formed asymmetrically with the axis of symmetry As2 As the center. Therefore, even if an operator or the like mistakenly inserts the front and back sides of the second cylindrical lens 14 into the cylindrical portion 41 of the lamp box 40 in the opposite direction, the positioning portions 14a and 14b of the second cylindrical lens 14 cannot be inserted into the lens support portions 46a and 46b. Therefore, erroneous assembly of the second cylindrical lens 14 is suppressed. Similarly, since the positioning portions 13a and 13b are formed asymmetrically about the axis of symmetry As1 in the first lenticular lens 13, erroneous assembly is suppressed.

Further, it is assumed that an operator or the like erroneously inserts the second lenticular lens 14 into the tube portion 41 of the lamp box 40 before the first lenticular lens 13, and inserts the positioning portions 14a and 14b of the second lenticular lens 14 into the lens support portions 46a and 46b. In this case, since the first lenticular lens 13 does not exist in the cylindrical portion 41, the second lenticular lens 14 is not supported by the first lenticular lens 13. Therefore, the pressed portions 14o, 14p, and 14q of the second cylindrical lens 14 are not pressed by the lens pressing portions 47a, 47b, and 47c, and the second cylindrical lens 14 is not fixed in the tube portion 41 of the lamp box 40 and is in a free state. Therefore, the operator can notice an error in the assembly sequence of the first lenticular lens 13 and the second lenticular lens 14 by not fixing the second lenticular lens 14.

(Effect)

As described above, according to the first embodiment, the following effects are obtained.

(1) The head-up display device 100 projects the display light L onto a windshield 201, which is an example of a member to be projected, to display a virtual image V. The head-up display device 100 includes: a light source 16a; a first lenticular lens 13 and a second lenticular lens 14, which are examples of lenses through which light from the light source 16a passes; a display panel 12 that receives light from the light source 16a that has passed through the first and second lenticular lenses 13 and 14 and emits display light L; a lamp box 40 formed in a cylindrical shape surrounding an optical path from the light source 16a to the display panel 12 and supporting the first lenticular lens 13, the second lenticular lens 14, and the display panel 12; and a display shielding member 11 for shielding noise emitted from the display panel 12. The display shielding member 11 includes: a frame 11e located on the outer peripheral side of a light emission surface 12c of the display panel 12, which emits display light L; and locking portions 11f1, 11f2 that are locked to light box 40, thereby sandwiching display panel 12 between frame portion 11e and light box 40.

According to this structure, the display shielding member 11 fixes the display panel 12 to the lamp box 40. Therefore, the assembly of a dedicated display panel cover for fixing the display panel 12 to the lamp box 40 is not required, and the assembly can be simplified. In addition, since a dedicated display panel cover is not required, the structure of the head-up display device 100 can be simplified.

(2) The lamp box 40 includes: a display panel positioning portion 42g that positions the display panel 12 by contacting a side surface of the display panel 12; and a shield positioning portion 42h that is formed integrally with the display panel positioning portion 42g at an upper surface 42g1 of the display panel positioning portion 42g, and positions the display shielding member 11 by being in contact with the display shielding member 11.

According to this structure, the display panel positioning portion 42g and the shield positioning portion 42h are integrally formed. In this case, the same shape error as that of the display panel positioning portion 42g is likely to occur in the shield positioning portion 42h. Therefore, compared to the case where the display panel positioning portion and the shield positioning portion are provided at separate positions, the occurrence of misalignment in the relationship between the position of the display panel 12 and the position of the display shield member 11 is suppressed.

(3) The frame 11e of the display shielding member 11 has fitting holes 11a, 11b, 11c, and 11d into which the shielding positioning portions 42h are fitted. The shield positioning portion 42h is provided in a part of the upper surface 42g1 of the display panel positioning portion 42 g.

According to this configuration, the contact area of the display panel positioning portion 42g with the display panel 12 is increased, whereby the display panel 12 can be stably held, and the shield positioning portion 42h can be set to a size suitable for the fitting holes 11a, 11b, 11c, and 11d.

(4) The head-up display device 100 includes an adhesive member 12b formed of an elastic member for adhering the frame 11e to the display panel 12.

According to this structure, since the adhesive material 12b has cushioning properties, the display shielding member 11 suppresses the occurrence of stress concentration on the display panel 12.

(5) The lamp box 40 includes locking ribs 43a, 43b provided on the outer peripheral surface of the lamp box 40 and locking the locking portions 11f1, 11f2 of the display shield member 11.

According to this configuration, since the locking portions 11f1 and 11f2 and the locking ribs 43a and 43b are positioned on the outer peripheral surface of the lamp box 40, the influence on the light from the light source 16a is suppressed. Further, the operation of locking the locking portions 11f1 and 11f2 of the display shielding member 11 to the locking ribs 43a and 43b is easy.

(6) The head-up display device 100 includes a terminal 16z connected to a ground terminal and a light source substrate 16 on which a light source 16a is mounted. The display shielding member 11 includes leg portions 11g1 and 11g2 extending in a direction intersecting the frame portion 11e and contacting the terminal 16z.

With this configuration, electromagnetic noise emitted from the display panel 12 flows to the ground of the light source substrate 16 via the display shielding member 11 and the terminal 16z. Therefore, leakage of electromagnetic noise to the outside of the head-up display device 100 is suppressed.

(7) The head-up display device 100 projects the display light L onto a windshield 201, which is an example of a member to be projected, to display a virtual image V. The head-up display device 100 includes: a light source 16a; a first lenticular lens 13 as an example of a first lens and a second lenticular lens 14 as an example of a second lens which are arranged along an optical axis direction (Z direction) of light from the light source 16a and through which the light from the light source 16a passes; a display panel 12 that receives light from the light source 16a via the first and second lenticular lenses 13 and 14 and emits display light L; and a lamp box 40 formed in a cylindrical shape surrounding an optical path from the light source 16a to the display panel 12 and supporting the first lenticular lens 13, the second lenticular lens 14, and the display panel 12. The lamp box 40 includes: a lens setting part 45a that sets the first lenticular lens 13 in the internal space (optical path space Sp) of the lamp box 40; and lens pressing portions 47a, 47b, and 47c that press the second lenticular lens 14 toward the first lenticular lens 13 and the lens arrangement portion 45a.

According to this configuration, the second lenticular lens 14 is pressed toward the first lenticular lens 13 by the lens pressing portions 47a, 47b, and 47c, the first lenticular lens 13 is pressed toward the lens setting portion 45a, and the first lenticular lens 13 and the second lenticular lens 14 are fixed in the tube portion 41 of the lamp box 40. Therefore, the work of fixing the first lenticular lens 13 and the second lenticular lens 14 in the tube portion 41 of the lamp box 40 is not required at the time of assembly, and the assembly of the head-up display device 100 can be simplified.

(8) The first lenticular lens 13 includes a distal end portion 13b2 of a positioning portion 13b, which is an example of a first positioning portion, provided on a side peripheral surface of the first lenticular lens 13. The second cylindrical lens 14 includes a distal end portion 14b2 of the positioning portion 14b, which is an example of the second positioning portion, provided on the side circumferential surface of the second cylindrical lens 14 and having a width (length in the width direction W) larger than the distal end portion 13b2 of the positioning portion 13b. The lamp box 40 includes a lens support portion 46b, and the lens support portion 46b includes a first receiving portion 46b1 that receives the positioning portion 13b by sandwiching the front end portion 13b2 of the positioning portion 13b from the width direction W, and a second receiving portion 46b2 that receives the positioning portion 14b by sandwiching the front end portion 14b2 of the positioning portion 14b from the width direction W. The first receiving portion 46b1 is provided at a position closer to the lens arrangement portion 45a than the second receiving portion 46b2, and is formed continuously with the second receiving portion 46b2 along the optical axis direction (Z direction).

For example, in the case where the second lenticular lens 14 is erroneously inserted into the lamp box 40 earlier than the first lenticular lens 13, the positioning portion 14b of the second lenticular lens 14 is fitted into the second receiving portion 46b2 in a state where the positioning portion 13b of the first lenticular lens 13 is not fitted into the first receiving portion 46b1. Due to this state, even if the first lenticular lens 13 is inserted into the lamp box 40, the insertion of the positioning portion 13b of the first lenticular lens 13 into the first receiving portion 46b1 is hindered by the positioning portion 14b located in the second receiving portion 46b2. Therefore, in the case where the order of assembling the first lenticular lens 13 and the second lenticular lens 14 is wrong, the first lenticular lens 13 is not supported by the lens support portion 46b. Therefore, the operator or the like easily recognizes that the order of assembling the first lenticular lens 13 and the second lenticular lens 14 is wrong.

As a comparative example, in the case where the first lenticular lens and the second lenticular lens and the lamp box are fixed by the pins and the holes, it is necessary to pass the pins formed in the lamp box through the respective holes of the first lenticular lens and the second lenticular lens. Therefore, it is troublesome to assemble the first lenticular lens and the second lenticular lens to the lamp box. In contrast to this comparative example, according to the above configuration, the first lenticular lens 13 and the second lenticular lens 14 can be fixed in the lamp box 40 only by sequentially fitting the first lenticular lens 13 and the second lenticular lens 14 into the lamp box 40 without passing a pin through a hole. Therefore, the assembly of the head-up display device 100 can be simplified. In addition, although a space for forming the pins is required in the case of forming the pins in the lamp box as in the comparative example, according to the above configuration, it is not necessary to form a plurality of pins in the lamp box 40, and the lamp box 40 can be downsized.

(9) The first lenticular lens 13 has a rectangular plate shape. The positioning portions 13a and 13b, which are examples of the two first positioning portions, are provided at positions facing each other along the longitudinal direction (X direction), which is an example of the first direction of the first lenticular lens 13, and are formed asymmetrically about the symmetry axis As1, which is an example of the first symmetry axis. The axis of symmetry As1 is located at the center of the first lenticular lens 13 in the longitudinal direction (X direction), and extends in the short direction (Y direction) which is one example of the second direction of the first lenticular lens 13. The second cylindrical lens 14 has a rectangular plate shape. The positioning portions 14a and 14b, which are examples of the two second positioning portions, are provided at positions facing each other along the longitudinal direction (X direction), which is an example of the first direction of the second lenticular lens 14, and are formed asymmetrically about the symmetry axis As2, which is an example of the second symmetry axis. The symmetry axis As2 is located at the center of the second lenticular lens 14 in the longitudinal direction (X direction), and extends along the short direction (Y direction) As an example of the second direction of the second lenticular lens 14.

According to this configuration, since the positioning portions 13a, 13b are formed asymmetrically with the axis of symmetry As1 As the center, in the case where the first lenticular lens 13 is inserted into the lamp box 40 in the wrong direction, the positioning portions 13a, 13b of the first lenticular lens 13 are not fitted into the first receiving portions 46a1, 46b1. Therefore, the worker or the like can easily recognize that the front and rear surfaces of the first lenticular lens 13 are opposite to each other. The same applies to the second lenticular lens 14, and in the case where the second lenticular lens 14 is erroneously inserted into the light box 40 in the opposite direction, the positioning portions 14a, 14b of the second lenticular lens 14 are not fitted into the second receiving portions 46a2, 46b2. Therefore, the operator or the like can easily recognize that the front and rear sides of the second lenticular lens 14 are opposite to each other. In addition, the positioning portions 13a, 13b, 14a, 14b may be formed at positions facing each other along the short side direction (Y direction) of the lenticular lenses 13, 14, and in this case, the symmetry axes As1, as2 may be designed to be located at the center of the short side direction (Y direction) of the lenticular lenses 13, 14 and extend along the longitudinal direction of the lenticular lenses 13, 14.

(10) The second cylindrical lens 14 includes pressed portions 14o, 14p, and 14q pressed by lens pressing portions 47a, 47b, and 47 c. The lamp box 40 includes: a cylindrical portion 41 surrounding an optical path from the light source 16a to the display panel 12; and window portions 48a, 48b, 48c which are formed as through holes at portions of the tube portion 41 which face the lens pressing portions 47a, 47b, 47c and which allow the portions of the pressed portions 14o, 14p, 14q which are pressed by the lens pressing portions 47a, 47b, 47c to be visually recognized from the outside of the lamp box 40.

With this configuration, the operator or the like can confirm whether or not the pressed portions 14o, 14p, and 14q of the second cylindrical lens 14 are pressed by the lens pressing portions 47a, 47b, and 47c, that is, whether or not the first cylindrical lens 13 and the second cylindrical lens 14 are correctly assembled in the tube portion 41 of the lamp box 40, through the window portions 48a, 48b, and 48c.

(second embodiment)

A second embodiment of the head-up display device according to the present invention will be described with reference to fig. 18 to 22. Hereinafter, points different from the first embodiment will be described.

As shown in fig. 18, in the second cylindrical lens 14, contact portions 14u1 to 14u3, 14j1, and 14j2 are formed in addition to the contact portion 14g provided at each corner of the outer frame portion 14k. The contact portions 14u1 to 14u3, 14j1, and 14j2 are provided on the surface of the outer frame portion 14k facing the first lenticular lens 13. The contact portions 14u1 to 14u3, 14j1, and 14j2 are formed in a disc shape similarly to the contact portion 14g.

The plurality of contact portions 14j1 and 14j2 are provided at the root portions of the positioning portions 14a and 14 b. The abutting portion 14j1 is located at a boundary portion between the positioning portion 14a and the outer frame portion 14k. The abutting portion 14j2 is located at the boundary portion between the positioning portion 14b and the outer frame portion 14k.

The contact portions 14u1 to 14u3 are provided at the root portions of the pressed portions 14o, 14p, and 14q. The contact portion 14u1 is located at a position facing the pressed portion 14o of the outer frame portion 14k. The contact portion 14u2 is located at a position facing the pressed portion 14p of the outer frame portion 14k. The contact portion 14u3 is located at a position facing the pressed portion 14q of the outer frame portion 14k.

As shown in fig. 20, the first ribs 14r1 to 14r5 and the second ribs 14v1 to 14v4 are formed on the second lenticular lens 14. The first ribs 14r1 to 14r5 and the second ribs 14v1 to 14v4 are formed on the surface of the second lenticular lens 14 on the side opposite to the surface on which the contact portion 14g is provided. The first ribs 14r1 to 14r5 and the second ribs 14v1 to 14v4 are provided to increase the strength of the second lenticular lens 14. The cross sections of the first ribs 14r1 to 14r5 and the second ribs 14v1 to 14v4 are substantially trapezoidal shapes whose widths decrease with distance from the outer frame portion 14k.

The first ribs 14r1, 14r2 extend in the X direction. Specifically, the first rib 14r1 is provided in the positioning portion 14a, and extends in a direction in which the positioning portion 14a protrudes with respect to the outer frame portion 14k. The first ribs 14r2 are provided on the positioning portion 14b, and extend in a direction in which the positioning portion 14b protrudes with respect to the outer frame portion 14k.

The first ribs 14r3, 14r4, 14r5 extend in the Y direction. Specifically, the first rib 14r3 is provided on the pressed portion 14o and extends in a direction in which the pressed portion 14o protrudes from the outer frame portion 14k. The first rib 14r4 is provided on the pressed portion 14p, and extends in a direction in which the pressed portion 14p protrudes from the outer frame portion 14k. The first rib 14r5 is provided on the pressed portion 14q, and extends in a direction in which the pressed portion 14q projects from the outer frame portion 14k.

The second ribs 14v1 to 14v4 are formed to extend in a direction intersecting the first ribs 14r1 to 14r5, respectively, and are connected to the first ribs 14r1 to 14r 5.

Specifically, the second ribs 14v1 and 14v2 extend in the Y direction, respectively. The second rib 14v1 is located at a boundary portion between the positioning portion 14a and the outer frame portion 14k. The end of the first rib 14r1 is connected to the center of the second rib 14v 1. The first rib 14r1 and the second rib 14v1 are T-shaped.

The second ribs 14v2 are located at the boundary portion between the positioning portion 14b and the outer frame portion 14k. The end of the first rib 14r2 is connected to the center of the second rib 14v2. The first rib 14r2 and the second rib 14v2 are T-shaped.

The second ribs 14v3, 14v4 extend in the X direction, respectively. Specifically, the second rib 14v3 extends along the lower side of the outer frame portion 14k. The second rib 14v3 is connected to the ends of the first ribs 14r3 and 14r 4.

The second rib 14v4 extends along the upper edge of the outer frame portion 14k. The end of the first rib 14r5 is connected to the center of the second rib 14v4.

As shown in fig. 20, a parting line 14z is formed on the surface of the second lenticular lens 14 on which the first ribs 14r1 to 14r5 and the second ribs 14v1 to 14v4 are formed. The parting line 14z is located in the entire region of the outer peripheral corner of the second lenticular lens 14. The parting line 14z is formed in a linear shape by a gap between a core, which is a movable mold not shown, and a cavity, which is a fixed mold. The core has recesses for forming the first ribs 14r1 to 14r5 and the second ribs 14v1 to 14v4, and when a molded product is taken out by injection molding, the core is separated from the cavity while the first ribs 14r1 to 14r5 and the second ribs 14v1 to 14v4 are sandwiched by the recesses. Therefore, the core can reliably peel off the second cylindrical lens 14 as a molded product from the cavity.

As shown in fig. 19, the first lenticular lens 13 has contact portions 13u1 to 13u3, 13j1, and 13j2 formed thereon, in addition to the contact portion 13g provided at each corner of the outer frame portion 13k. The contact portions 13u1 to 13u3, 13j1, and 13j2 are provided on the surface of the outer frame portion 13k facing the second cylindrical lens 14. The contact portions 13u1 to 13u3, 13j1, and 13j2 have flat hemispherical tips, similarly to the contact portion 13g. The surface of the outer frame portion 13k on which the abutting portion 13g is formed is indicated with an identification display such as a model number.

The abutting portions 13j1 and 13j2 are provided at the root portions of the positioning portions 13a and 13b, respectively. The abutting portion 13j1 is located at a boundary portion between the positioning portion 13a and the outer frame portion 13k. The abutting portion 13j2 is located at a boundary portion between the positioning portion 13b and the outer frame portion 13k.

The contact portions 13u1 and 13u2 are arranged along the lower side of the outer frame portion 13k, and are provided between two contact portions 13g located at both ends of the lower side of the outer frame portion 13k. The two abutting portions 13g and the two abutting portions 13u1 and 13u2 are arranged at equal intervals.

The contact portion 13u3 is disposed along the upper side of the outer frame portion 13k, and is provided between two contact portions 13g located at both ends of the upper side of the outer frame portion 13k, in this example, at the center of the two contact portions 13g.

Ribs 13r1 and 13r2 are formed on the outer frame portion 13k of the first lenticular lens 13. The ribs 13r1 and 13r2 are provided to increase the strength of the first lenticular lens 12. The cross sections of the ribs 13r1, 13r2 are trapezoidal in shape whose width decreases with distance from the outer frame portion 13k.

The rib 13r1 extends along the lower edge of the outer frame portion 13k. The rib 13r1 is formed to connect two contact portions 13g located at both ends of the lower side of the outer frame portion 13k and the two contact portions 13u1 and 13u 2.

The rib 13r2 extends along the upper edge of the outer frame portion 13k. The rib 13r2 is formed to connect the two contact portions 13g and the contact portion 13u3 located at both ends of the upper side of the outer frame portion 13k.

As shown in fig. 18 and 19, in a state where the first lenticular lens 13 and the second lenticular lens 14 are accommodated in the lamp box 40 (see fig. 15), the abutting portion 13u1 contacts the abutting portion 14u1, the abutting portion 13u2 contacts the abutting portion 14u2, the abutting portion 13u3 contacts the abutting portion 14u3, the abutting portion 13j1 contacts the abutting portion 14j1, and the abutting portion 13j2 contacts the abutting portion 14j2.

As shown in fig. 19, a parting line 13z is formed on the surface of the first lenticular lens 13 on which the ribs 13r1 and 13r2 are formed. The parting line 13z is located in the entire region of the outer peripheral corner of the first lenticular lens 13. The parting line 13z is formed in a linear shape by a gap between a core, which is a movable mold not shown, and a cavity, which is a fixed mold. The core has recesses for forming the ribs 13r1 and 13r2, and when the molded article is taken out during injection molding, the core is separated from the cavity while the ribs 13r1 and 13r2 are sandwiched by the recesses. Therefore, the core can reliably peel off the first lenticular lens 13 as a molded product from the cavity.

As shown in fig. 21, the lens support portions 46a and 46b are formed with bottomed holes, and include receiving bottom portions 46a3 and 46b3 that support the positioning portions 13a and 13b (see fig. 18) from the lens arrangement portion 45a side. In the present embodiment, the first receiving portions 46a1, 46b1 do not sandwich the positioning portions 13a, 13b from the width direction. The receiving bottoms 46a3, 46b3 support the root portions NA of the front end portions 13a2, 13b2 of the positioning portions 13a, 13b (refer to fig. 18). The root portion NA refers to a portion of the distal end portions 13a2 and 13b2 close to the base portions 13a1 and 13b 1.

As shown in fig. 22, the receiving bottom portion 46b3 is located at the upper end of the reinforcing wall portion 46k that connects between the reinforcing wall portions 46c, 46d. The reinforcing wall 46k is formed in a plate shape along the same direction as the reinforcing walls 46c and 46d, and is formed lower than the reinforcing walls 46c and 46d toward the lens installation portion 45a. The receiving bottom 46a3 is formed similarly to the receiving bottom 46b3.

Various vibrations are applied to the head-up display device 100. For example, a comparative example in which the first lenticular lens does not have the contact portions 13j1 and 13j2 and the second lenticular lens does not have the contact portions 14j1 and 14j2 will be described.

In this comparative example, when the second cylindrical lens resonates due to vibration applied to the head-up display device, the second cylindrical lens is alternately curved in a concave shape and a convex shape along the longitudinal direction of the second cylindrical lens. Thereby, the positioning portions 14a, 14b of the second lenticular lens vibrate in the thickness direction of the second lenticular lens. Thereby, the positioning portions 14a, 14b rub against the second receiving portions 46a2, 46b2, and abrasion powder is generated from the positioning portions 14a, 14 b. Specifically, the side surface 14a3 and the end surface 14a4 of the positioning portion 14a, which are shown enlarged in the lower portion of fig. 15, rub against the second receiving portion 46a2, and abrasion powder is generated. In addition, the vibration of the positioning portions 14a, 14b of the second lenticular lens is transmitted to the positioning portions 13a, 13b of the first lenticular lens, and the positioning portions 13a, 13b rub against the first receiving portions 46a1, 46b1 to generate abrasion powder from the first receiving portions 46a1, 46b1. Specifically, the side surface 13a3 and the end surface 13a4 of the positioning portion 13a shown in an enlarged manner in the lower portion of fig. 14 rub against the first receiving portion 46a1, thereby generating abrasion powder.

If the abrasion powder generated is attached to the lens body portion of each of the first lenticular lens and the second lenticular lens, light from the light source is blocked, and there is a possibility that the display quality of the virtual image is degraded.

In this regard, in the present embodiment, the abutting portions 13j1 and 13j2 of the first lenticular lens 13 abut against the abutting portions 14j1 and 14j2 of the second lenticular lens 14, thereby suppressing the vibration of the positioning portions 13a and 13b of the first lenticular lens 13 and the positioning portions 14a and 14b of the second lenticular lens 14. Therefore, the positioning portions 13a, 13b, 14a, 14b are inhibited from being worn against the first receiving portions 46a1, 46b1 and the second receiving portions 46a2, 46b2 to generate wear dust.

In the present embodiment, abutting portions 14u1 to 14u3 are provided at the root portions of the pressed portions 14o, 14p, and 14q. Therefore, the pressed portions 14o, 14p, 14q are suppressed from rubbing against the lens pressing portions 47a, 47b, 47c, and thereby generation of abrasion powder is suppressed.

(Effect)

As described above, according to the second embodiment, the following effects are obtained.

(1) The first lenticular lens 13 includes abutting portions 13j1 and 13j1 as an example of a first abutting portion provided at the root portions of positioning portions 13a and 13b as an example of a first positioning portion on a surface facing the second lenticular lens 14. The second lenticular lens 14 includes abutting portions 14j1 and 14j2 as an example of a second abutting portion that is provided at the root portions of the positioning portions 14a and 14b as an example of a second positioning portion on the surface facing the first lenticular lens 13 and abuts against the abutting portions 13j1 and 13j2 of the first lenticular lens 13.

According to this configuration, the abutting portions 13j1, 13j2 of the first lenticular lens 13 abut against the abutting portions 14j1, 14j2 of the second lenticular lens 14, whereby vibration of the positioning portions 13a, 13b of the first lenticular lens 13 and the positioning portions 14a, 14b of the second lenticular lens 14 is suppressed. Therefore, abrasion powder is suppressed from being generated by friction between the positioning portions 13a, 13b, 14a, 14b and the first receiving portions 46a1, 46b1 and the second receiving portions 46a2, 46b2.

(2) The first lenticular lens 13 includes a lens main body portion 13m, which is an example of a first lens main body portion through which light passes, and an outer frame portion 13k, which is an example of a first outer frame portion, located around the lens main body portion 13 m. The positioning portions 13a and 13b are provided on the outer peripheral edge portion of the outer frame portion 13K so as to project toward the outer peripheral side of the outer frame portion 13K. The second cylindrical lens 14 includes a lens main body portion 14m, which is an example of a second lens main body portion through which light passes, and an outer frame portion 14k, which is an example of a second outer frame portion, located around the lens main body portion 14 m. The positioning portions 14a and 14b are provided on the outer peripheral edge portion of the outer frame portion 14k so as to protrude toward the outer peripheral side of the outer frame portion 14k. First ribs 14r1, 14r2 extending in the protruding direction of the positioning portions 14a, 14b are formed on the positioning portions 14a, 14 b.

According to this configuration, the first ribs 14r1, 14r2 increase the rigidity of the positioning portions 14a, 14b, thereby suppressing the vibration of the positioning portions 14a, 14 b.

(3) Second ribs 14v1, 14v2 extending along the outer frame portion 14k in a direction intersecting the first ribs 14r1, 14r2 and connected to end portions of the first ribs 14r1, 14r2 are formed in the outer frame portion 14k.

According to this configuration, since the first ribs 14r1, 14r2 and the second ribs 14v1, 14v2 extending in different directions from each other are formed so as to be linked, the rigidity of the positioning portions 14a, 14b is further improved, and vibration of the positioning portions 14a, 14b is suppressed.

(4) In the first lenticular lens 13, a parting line 13z is formed on the surface on which the ribs 13r1 and 13r2 are formed.

According to this configuration, when a molded article is taken out by injection molding, the core as the movable mold moves relative to the cavity as the fixed mold while sandwiching the ribs 13r1 and 13r2. Therefore, the core can reliably peel off the first lenticular lens 13 as a molded product from the cavity.

(5) The lens support portions 46a and 46b include receiving bottom portions 46a3 and 46b3 that support the root portions of the distal end portions 13a2 and 13b2 of the first positioning portions 13a and 13b from the lens arrangement portion 45a side.

According to this structure, since the receiving bottom portions 46a3, 46b3 support the root portions of the distal end portions 13a2, 13b2 of the positioning portions 13a, 13b, it is possible to suppress vibration of the positioning portions 13a, 13b, thereby suppressing generation of abrasion powder.

(6) The surface of the second lenticular lens 14 on which the first ribs 14r1 to 14r5 and the second ribs 14v1 to 14v4 are formed faces the same direction as the surface of the first lenticular lens 13 on which the ribs 13r1 and 13r2 are formed.

As a comparative example, in the case where the ribs of the first lenticular lens and the second lenticular lens face each other, in order to suppress the distance between the first lenticular lens and the second lenticular lens from increasing, the height of the rib needs to be set low. In this case, it is difficult to increase the strength of the first lenticular lens and the second lenticular lens by the ribs.

In this regard, according to the above configuration, the first ribs 14r1 to 14r5 and the second ribs 14v1 to 14v4 of the second lenticular lens 14 are not opposed to the ribs 13r1 and 13r2 of the first lenticular lens 13 because they are oriented in the same direction. Therefore, the heights of the first ribs 14r1 to 14r5, the second ribs 14v1 to 14v4, and the ribs 13r1 and 13r2 can be increased while suppressing an increase in the distance between the first lenticular lens 13 and the second lenticular lens 14. Therefore, the first ribs 14r1 to 14r5, the second ribs 14v1 to 14v4, and the ribs 13r1 and 13r2 can increase the strength of the first lenticular lens 13 and the second lenticular lens 14.

(7) The first lenticular lens 13 is disposed at a position closer to the display panel 12 than the second lenticular lens 14, and the ribs 13r1, 13r2 are formed on the opposite side to the display panel 12, that is, on the surface of the first lenticular lens 13 close to the light source 16 a. A model number as an example of identification display is displayed on the surface of the outer frame portion 13k of the first lenticular lens 13 near the display panel 12.

As an assembly procedure of the display unit 10, first, a lens insertion step of inserting the first lenticular lens 13 and the second lenticular lens 14 into the lamp box 40 is followed by a panel setting step of setting the display panel 12 on the support end surface 41a of the lamp box 40. After the lens insertion step and before the panel installation step, the model number of the outer frame portion 13k can be visually recognized from the support end surface 41a side. Since the ribs 13r1 and 13r2 are not formed on the surface of the first lenticular lens 13 on which the model numbers are displayed, the degree of freedom in the display size or display position of the model numbers is increased, and the visibility of the model numbers can be improved.

The present invention is not limited to the above embodiments and drawings. Changes (including deletion of constituent elements) can be made as appropriate without departing from the spirit of the present invention. An example of the modification is described below.

(modification example)

In each of the above embodiments, at least one of the window portions 48a, 48b, and 48c may be omitted.

The lens pressing portions 47a, 47b, and 47c may be provided inside the tube portion 41.

In each of the above embodiments, the display panel positioning portion 42g and the shield positioning portion 42h are integrally formed, but the present invention is not limited thereto, and the display panel positioning portion 42g and the shield positioning portion 42h may be separately formed at separate positions.

In each of the above embodiments, the shield positioning portion 42h is provided on a part of the upper surface 42g1 of the display panel positioning portion 42g, but the present invention is not limited thereto, and may be provided on the entire area of the upper surface 42g 1.

In the above embodiments, the positions, the number, and the shapes of the positioning ribs 42a, 42b, 42c, and 42d can be changed as appropriate. Further, the rotation restricting ribs 42e and 42f can be omitted. Further, the adhesive member 12b can be omitted.

In each of the above embodiments, the first receiving portion 46b1 and the second receiving portion 46b2 are formed to be continuous with steps in the Z direction, but the first receiving portion 46b1 and the second receiving portion 46b2 may be provided at different positions in the Z direction. Similarly, the first receiving portion 46a1 and the second receiving portion 46a2 may be provided at different positions in the Z direction.

In the above embodiments, the positions, the number, and the shapes of the locking ribs 43a and 43b can be changed as appropriate. For example, the locking ribs 43a and 43b are provided on the outer peripheral surface of the tube portion 41, but the present invention is not limited thereto, and may be provided on an end portion of the tube portion 41 or the inner peripheral surface of the tube portion 41.

In the display shielding member 11 of each of the above embodiments, the positions, the number, and the shapes of the locking portions 11f1, 11f2 and the leg portions 11g1, 11g2 can be changed as appropriate. The leg portions 11g1 and 11g2 may be omitted.

In each of the above embodiments, the positioning portions 13a and 13b are formed asymmetrically about the axis of symmetry As1, but the positioning portions 13a and 13b may be formed symmetrically about the axis of symmetry As 1. The positioning portions 14a and 14b may be formed symmetrically about the axis of symmetry As 2.

The positions, the number, and the shapes of the positioning portions 14a, 14b and the pressed portions 14o, 14p, 14q of the second cylindrical lens 14 in the above embodiments can be changed as appropriate. Similarly, the positions, the number, and the shapes of the positioning portions 13a and 13b of the first lenticular lens 13 can be appropriately changed. The base portions 13a1, 13b1, 14a1, and 14b1 can be omitted.

In addition, the positioning portions 14a, 14b and the pressed portions 14o, 14p, 14q of the second cylindrical lens 14 in the above embodiments may be shared. In this case, the shared portions are supported by the lens supporting portions 46a, 46b and pressed by the lens pressing portions 47a, 47b, 47 c.

Further, the pressed portions 14o, 14p, and 14q of the second cylindrical lens 14 may be omitted, and the lens pressing portions 47a, 47b, and 47c may press the outer frame portion 14k of the second cylindrical lens 14 as the pressed portions.

The positions, the number, and the shapes of the lens pressing portions 47a, 47b, and 47c in the above embodiments can be changed as appropriate.

In the above embodiments, the lens pressing portions 47a, 47b, and 47c are formed integrally with the tube portion 41, but the present invention is not limited thereto, and may be provided as separate members. In this case, the lens pressing portions 47a, 47b, and 47c may be springs or elastic materials that press the second lenticular lens 14 by elastic force.

Further, the fitting holes 11a, 11b, 11c, and 11d of the display shielding member 11 may be omitted. In this case, the shield positioning portion 42h may be in contact with the side surface of the display shield member 11.

In each of the above embodiments, the lens pressing portions 47a, 47b, and 47c hold two lenses, that is, the first lenticular lens 13 and the second lenticular lens 14, in the lamp box 40 between the lens pressing portions 47a, 47b, and 47c and the lens setting portion 45a, but the number of lenses held in the lamp box 40 by the lens pressing portions 47a, 47b, and 47c may be three or more. The types and shapes of the first lenticular lens 13 and the second lenticular lens 14 can be appropriately changed.

In each of the above embodiments, the head-up display device 100 is mounted on the vehicle 200, but may be mounted on a vehicle such as an airplane or a ship other than the vehicle 200. The projected member is not limited to the windshield, and may be a dedicated combiner.

In the second embodiment, the abutting portions 14j1 and 14j2 are located at the boundary portions between the positioning portions 14a and 14b and the outer frame portion 14k, but are not limited thereto as long as they are provided at the root portions of the positioning portions 14a and 14 b. For example, the contact portions 14j1 and 14j2 may be provided at positions of the outer frame portion 14k that face the positioning portions 14a and 14b, or may be provided at positions of the positioning portions 14a and 14b that are close to the outer frame portion 14k.

In the second embodiment, the abutting portions 14u1 to 14u3 are provided on the outer frame 14k, but may be located at the boundary portions between the pressed portions 14o, 14p, and 14q and the outer frame portion 14k or in the vicinity of the outer frame portion 14k of the pressed portions 14o, 14p, and 14q as long as they are located at the root portions of the pressed portions 14o, 14p, and 14q.

At least one of the second ribs 14v1 to 14v4 in the second embodiment may be omitted. At least one of the first ribs 14r1 to 14r5 may be omitted.

In the second embodiment, at least one of the first ribs and the second ribs may be formed on the positioning portions 13a and 13b of the first lenticular lens 13, as in the second lenticular lens 14.

Claims (15)

1. A head-up display device that displays a virtual image by projecting display light onto a member to be projected, the head-up display device comprising:

a light source;

a display panel that receives the light from the light source and emits the display light;

a lamp box formed in a cylindrical shape surrounding an optical path from the light source to the display panel and supporting the display panel; and

a display shielding member blocking noise emitted from the display panel,

the display shielding member includes:

a frame portion located on an outer peripheral side of a light emitting surface of the display panel that emits the display light; and

and a locking portion that is locked to the lamp box so that the display panel is sandwiched between the frame and the lamp box.

2. Head-up display device according to claim 1,

the lamp box is provided with:

a display panel positioning portion that positions the display panel by being in contact with a side surface of the display panel; and

a shield positioning portion integrally formed with the display panel positioning portion on an upper surface of the display panel positioning portion, the shield positioning portion positioning the display shielding member by contacting the display shielding member.

3. Head-up display device according to claim 2,

a fitting hole into which the shield positioning portion is fitted is formed in the frame portion of the display shield member,

the shielding positioning portion is provided in a part of the upper surface of the display panel positioning portion.

4. Head-up display device according to any one of claims 1 to 3,

the disclosed device is provided with: an adhesive member that is located between the frame portion and the display panel and is formed of an elastic member.

5. Head-up display device according to any one of claims 1 to 3,

the lamp box is provided with: and a locking rib provided on an outer peripheral surface of the lamp housing and locking the locking portion of the display shielding member.

6. Head-up display device according to any one of claims 1 to 3,

the head-up display device includes: a terminal connected to a ground terminal and a light source substrate on which the light source is mounted,

the display shielding member includes: a leg portion that extends in a direction intersecting the frame portion and that is in contact with the terminal.

7. A head-up display device that displays a virtual image by projecting display light onto a member to be projected, the head-up display device comprising:

a light source;

a first lens and a second lens that are aligned in an optical axis direction of the light from the light source and transmit the light from the light source;

a display panel that receives the light from the light source that has passed through the first lens and the second lens and emits the display light; and

a lamp box formed in a cylindrical shape surrounding an optical path from the light source to the display panel, supporting the first lens, the second lens, and the display panel,

the lamp box is provided with:

a lens setting part that sets the first lens in an inner space of the lamp box; and

a lens pressing portion that presses the second lens toward the first lens and the lens setting portion.

8. Head-up display device according to claim 7,

the first lens includes: a first positioning portion provided on a side circumferential surface of the first lens,

the second lens includes: a second positioning portion provided on a side circumferential surface of the second lens and having a larger width than the first positioning portion,

the lamp box is provided with:

a lens support section having a first receiving portion that is located at a position where the first positioning portion is sandwiched from a width direction and receives the first positioning portion, and a second receiving portion that is located at a position where the second positioning portion is sandwiched from a width direction and receives the second positioning portion,

the first receiving portion is provided at a position closer to the lens setting portion than the second receiving portion, and is formed to be continuous with the second receiving portion in the optical axis direction.

9. Head-up display device according to claim 8,

the first lens is in a rectangular plate shape,

the two first positioning portions are provided at positions facing each other in a first lateral direction of the first lens, and are formed asymmetrically with a first axis of symmetry located at a center of the first lateral direction of the first lens and extending in a second lateral direction of the first lens as a center,

the second lens is in a rectangular plate shape,

the two second positioning portions are provided at positions facing each other in a first side direction of the second lens, and are formed asymmetrically with a second axis of symmetry located at the center in the first side direction of the second lens and extending in a second side direction of the second lens as a center.

10. Head-up display device according to claim 8 or 9,

the first lens includes: a first contact portion provided at a root portion of the first positioning portion on a surface facing the second lens,

the second lens includes: and a second abutting portion provided at a root portion of the second positioning portion on a surface facing the first lens, and abutting against the first abutting portion of the first lens.

11. Head-up display device according to claim 8 or 9,

the first lens includes:

a first lens body portion that is a portion through which light is transmitted; and

a first outer frame portion located around the first lens main body portion,

the first positioning portion is provided on an outer peripheral edge portion of the first outer frame portion so as to protrude toward an outer peripheral side of the first outer frame portion,

the second lens includes:

a second lens body portion that is a portion through which light is transmitted; and

a second outer frame portion located around the second lens main body portion,

the second positioning portion is provided on an outer peripheral edge portion of the second outer frame portion so as to protrude toward an outer peripheral side of the second outer frame portion,

first ribs extending in a direction in which the first positioning portion and/or the second positioning portion protrude are formed in the first positioning portion and/or the second positioning portion.

12. Head-up display device according to claim 11,

second ribs extending along the first outer frame portion and/or the second outer frame portion so as to intersect the first ribs are formed in the first outer frame portion and/or the second outer frame portion.

13. Head-up display device according to claim 11,

in the first lens and/or the second lens, a parting line is formed on a surface on which the first rib is formed.

14. Head-up display device according to claim 8 or 9,

the lens support section includes: a receiving bottom portion that supports a root portion of a leading end portion of the first positioning portion from the lens setting portion side.

15. Head-up display device according to any one of claims 7 to 9,

the second lens includes:

a pressed portion pressed by the lens pressing portion,

the lamp box is provided with:

a barrel portion surrounding the optical path from the light source to the display panel; and

a window portion formed as a through hole at a portion of the cylindrical portion facing the lens pressing portion, the window portion enabling a portion of the pressed portion pressed by the lens pressing portion to be visually recognized from outside the lamp box.

Images