JP2010132207A - Head-up display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a head-up display device for easily exchanging a light transmitting member when the light transmitting member breaks. <P>SOLUTION: The head-up display device includes a liquid crystal display element 22 for emitting display light L, a concave mirror 41 for reflecting the display light L, and a housing 50 having a space part 51 which houses the liquid crystal display element 22 and the concave mirror 41 and an aperture part 52 through which the display light L reflected by the concave mirror 41 transmits. In the head-up display device, a light transmitting cover (light transmitting member) 60 has a peripheral edge part 62 arranged on the aperture part 52 to be held by a holding part 54 formed in the housing 50, and the display light L reflected by the concave mirror 41 is projected to a windshield 13 through the light transmitting cover 60 to display information to an observer 14. The head-up display device includes a cover member 70 for covering a required part and the peripheral part 62 of a front wall 53, and the cover member 70 is detachably mounted on the housing 50. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a head-up display device that projects display light emitted from a display element onto a projection member such as a windshield of a vehicle and displays a virtual image to an observer.

  Conventionally, in this type of head-up display device, as described in Patent Document 1, for example, display light from a display unit (display device) is projected onto a windshield (projection member) of a vehicle to display a virtual image. Is known to do.

  The display unit is attached to an instrument panel (hereinafter referred to as instrument panel) of a vehicle, and includes a display element (liquid crystal display element) that emits display light, and a concave mirror (reflective member) that reflects display light emitted from the display element. ), And a housing having a space for housing the display element and the concave mirror and an opening through which the display light reflected by the concave mirror passes, and a transparent acrylic resin formed separately from the housing. A translucent cover (translucent member) is attached (arranged) to the opening formed in the front wall of the housing, and the display light reflected by the concave mirror is projected onto the projection member through the translucent cover ( Projection) to display a virtual image to the observer.

Further, in this case, the translucent cover is attached to the opening so that the back surface portion at the peripheral edge thereof is held by a holding portion having a bowl shape integrally formed with the housing (the front wall), Further, the peripheral part of the translucent cover and the holding part formed in a bowl shape integrally formed on the housing (the front wall) so as to hold the rear side of the peripheral part are firmly fixed (adhered) with a double-sided adhesive tape. ).
JP 2008-185753 A

  In the configuration in which the housing (the holding portion) and the translucent cover (the peripheral portion) are firmly bonded with the double-sided adhesive tape as in the head-up display device described above, after the translucent cover is fixed to the housing The display unit is attached to the instrument panel.

  By the way, if the translucent cover is damaged for some reason after the display unit is attached to the instrument panel (for example, the translucent cover is damaged by a hard object directly hitting the surface of the translucent cover). In this case, the light-transmitting cover is firmly bonded to the housing as described above, and thus includes not only the light-transmitting cover but also the light-transmitting cover, the display element, the concave mirror, and the housing. It is necessary to remove the entire display unit from the instrument panel and install a new display unit on the instrument panel again.

In other words, if only the translucent cover (translucent member) that is originally a component of the display unit is damaged, replace only the damaged translucent cover with a new non-damaged translucent cover. However, because the translucent cover is firmly bonded to the housing, not only the translucent cover but also other parts (display element, concave mirror, and housing) that are not damaged together (simultaneously) There was a contradiction that had to be replaced, and there was room for further improvement in this regard.
Accordingly, an object of the present invention is to provide a head-up display device that can easily replace a light-transmitting member when the light-transmitting member is damaged in order to deal with the above-described problems.

  The present invention provides a display element that emits display light, a reflective member that reflects the display light, a space that houses the display element and the reflective member, and an opening through which the display light reflected by the reflective member passes. A translucent member formed separately from the housing is disposed so as to cover the opening, and the display light reflected by the reflective member is transmitted through the translucent member. In a head-up display device that projects an image onto a projection member through a member to display to an observer, the translucent member is detachably provided to the housing.

  The present invention also provides a display element that emits display light, a reflective member that reflects the display light, a space that houses the display element and the reflective member, and an opening through which the display light reflected by the reflective member passes. And a translucent member formed separately from the housing is disposed in the opening so that a peripheral edge thereof is held by a holding portion formed in the housing. A head-up display device that projects the display light reflected by the reflecting member onto a projection member through the translucent member and displays it to an observer, comprising: a covering member that covers at least the peripheral edge; A covering member is detachably provided on the housing.

  Further, the present invention is characterized in that the covering member and the translucent member are integrally formed.

  The translucent member may further include a curved surface portion in a region corresponding to the opening, so that reflected light when external light is reflected on the surface of the curved surface portion is not reflected on the observer side. The curvature of the curved surface portion is set.

  ADVANTAGE OF THE INVENTION According to this invention, the initial objective can be achieved and the head-up display apparatus which can replace | exchange a translucent member easily when a translucent member is damaged can be provided.

(First Embodiment) An embodiment in which the present invention is applied to a head-up display device for a vehicle will be described below with reference to the accompanying drawings. 1 to 6 show a first embodiment of the present invention, FIG. 1 is a schematic diagram of a head-up display device according to the first embodiment of the present invention, and FIG. 2 is a display device according to the same embodiment. FIG. 3 is an enlarged cross-sectional view showing the portion A in FIG. 2 in an enlarged manner, and FIG. 4 is a partial view of the housing, a translucent member, and a cover member when viewed from the direction of arrow B in FIG. FIG. 5 is a view showing an assembly example for assembling the translucent member and the cover member to the housing according to the embodiment.

  As shown in FIG. 1, the head-up display device is configured such that the display light L projected by the display device 12, which is a display unit disposed on the instrument panel 11 of the vehicle 10, is generated by the windshield 13 of the vehicle 10 that is a projection member. The virtual image V is displayed by reflecting in the direction of the driver (observer) 14. In other words, the head-up display device irradiates (projects) the display light L emitted from a liquid crystal display (described later) of the display device 12 onto the windshield 13 (the projection member), and displays a display image ( Virtual image) V is made visible to the driver 14. Thus, the driver 14 can observe the virtual image V superimposed on the landscape.

  In the case of the present embodiment, a housing to be described later provided in the display device 12 is in a state where a region A surrounded by an alternate long and short dash line protrudes from the instrument panel 11 in FIG. It shall be attached using the fixing means.

  As shown in FIG. 2, the display device 12 mainly includes a liquid crystal display 20, a first reflector 30, a second reflector 40, a housing 50, and a cover member 70.

  The liquid crystal display 20 has a light source 21 formed of a light emitting diode mounted on the wiring board R and a front side (directly above) the light source 21 so as to transmit the illumination light from the light source 21 and form the display light L. It is mainly composed of a TFT-type liquid crystal display element (display element) 22 positioned. This means that the light source 21 is disposed behind (directly below) the liquid crystal display element 22, and the liquid crystal display element 22 displays predetermined information (information to be described later) by the light emitted from the light source 21. I mean. The liquid crystal display 20 is provided in the housing 50 such that the surface on the emission side of the display light L faces a cold mirror (to be described later) of the first reflector 30, and the optical axis of the display light L is on the cold mirror. Fixed and held at a crossing position and orientation.

  Further, the liquid crystal display element 22 emits and displays information (for example, the speed of the vehicle and the engine speed) to be displayed by an element driving circuit (not shown) by numerical values. The liquid crystal display 20 outputs display light L composed of light in the visible wavelength range. For example, a light source 21 that emits red light (mainly emission wavelength range of 610 to 640 nm) can be applied. Needless to say, the information to be displayed is not limited to the speed of the vehicle and the engine speed, and any display form can be adopted.

  The first reflector 30 includes a cold mirror 31 and an attachment member 32 for attaching and fixing the cold mirror 31 using predetermined attachment means. The cold mirror 31 includes a substantially rectangular glass substrate 31a and a first reflective layer 31b formed on one surface of the glass substrate 31a (a surface facing a concave mirror described later of the second reflector 40). . The first reflective layer 31b is composed of multilayer interference films having different film thicknesses, and is formed by a method such as vapor deposition. Further, the cold mirror 31 is disposed in an inclined state at a position where the display light L emitted from the liquid crystal display 20 (liquid crystal display element 22) is reflected toward the second reflector 40 (the concave mirror). .

  The cold mirror 31 reflects light in the visible wavelength range (450 to 750 nm) including the emission wavelength range of the liquid crystal display 20 with a high reflectance (for example, 80% or more), and lowers light outside the visible wavelength range. It reflects with reflectivity. In this case, a cold mirror 31 that reflects light in the infrared wavelength region other than the visible wavelength region (infrared rays or heat rays of sunlight) with a low reflectance (for example, 15% or less) is applied. The light that is not reflected by the first reflective layer 31 b is configured to pass through the cold mirror 31. The attachment member 32 is made of, for example, a black synthetic resin material and is fixed to the housing 50.

  The second reflector 40 includes a concave mirror (reflecting member) 41 that reflects the display light L from the cold mirror 31 (that is, the display element 22), and a mirror holder 42 that holds the concave mirror 41.

  The concave mirror 41 is formed by vapor-depositing a second reflective layer 41a on a resin substrate made of polycarbonate having a concave surface. The concave mirror 41 is disposed in an inclined state at a position where the second reflective layer 41a faces the cold mirror 31 and a translucent cover (to be described later) of the housing 50 and faces the translucent cover.

  The concave mirror 41 is for reflecting (projecting) the display light L from the cold mirror 31 toward the translucent cover (the windshield 13 of the vehicle 10). This means that the concave mirror 41 enlarges the display light L reflected by the cold mirror 31 and projects the enlarged display light L onto the windshield 13 through the translucent cover. The concave mirror 41 is bonded to the mirror holder 42 with a double-sided adhesive tape. The mirror holder 42 is made of synthetic resin (for example, ABS resin) and is fixed to the housing 50.

  The housing 50 is made of, for example, a black light-shielding synthetic resin material, is formed in a substantially box shape, and the liquid crystal display 20 (the liquid crystal display element 22), the first reflector 30, and the space portion 51 that is an internal space of the housing 50. The second reflector 40 (concave mirror 41) is held and accommodated, and has an opening 52 that opens at the upper portion (front glass 13 side) of the concave mirror 41 in the second reflector 40. Then, the display light L reflected by the concave mirror 41 passes through the opening 52.

  The housing 50 is provided with a translucent cover (translucent member) 60 formed by a member (separate member) different from the housing 50 so as to close the opening 52. The translucent cover 60 is made of a translucent synthetic resin material (for example, acrylic resin) and has a function as a light transmissive member that transmits (passes) the display light L reflected by the concave mirror 41. . That is, the display light L reflected by the cold mirror 31 and the concave mirror 41 is projected onto the windshield 13 through the translucent cover 60 disposed in the opening 52 in the housing 50, whereby the display of the virtual image V is displayed by the driver. 14 will be performed.

  Incidentally, in FIG. 3 showing the A portion of FIG. 2 in an enlarged manner, reference numeral 53 denotes a front wall formed so as to surround the opening 52 of the housing 50, and the front wall 53 is translucent at the lower end side thereof. In order to hold a peripheral portion of the cover 60 which will be described later, a holding portion 54 having a hook shape protruding inward from the opening 52 (that is, the inner wall surface of the front wall 53) is provided. Since the holding portion 54 that holds the peripheral edge portion is integrally formed on the lower end side of the front wall 53 as described above, a width that is narrower than the opening width of the opening portion 52 is formed on the lower end side of the front wall 53. A narrow opening 55 is provided.

  Also, in FIG. 4, which is a view when viewed from the direction of arrow B in FIGS. 3 and 2, 56 is an engaging portion formed on an outer wall surface portion of the housing 50 corresponding to a locking portion described later, The engaging portion 56 is formed by providing a substantially U-shaped engaging frame 56a that protrudes outward from the outer wall surface of the housing 50, and the engaging frame 56a. It consists of the space part 56b as a piece insertion space.

  57 is a support part that is integrally formed with the housing 50 so as to be positioned below the engaging part 56, and has a function of supporting a lower end portion of the engaging part after the engaging part is inserted into the space part 56b. It is. Here, in this example, the engaging portion 56 and the support portion 57 corresponding thereto are formed at two locations along one side surface portion (the outer wall surface) of the housing 50 on the windshield 13 side. In addition, the cross-sectional shape formed by the CC line in FIG. 4 corresponds to the cross-sectional view shown in FIG.

  On the other hand, on the front wall 53 of the housing 50, which is an upper portion of the location where the cold mirror 31 is disposed and is slightly away from the windshield 13, a substantially cylindrical boss projecting toward the cold mirror 31 side. 58 is provided (see FIGS. 2 and 3). The boss portion 58 is provided with a screw threaded portion 58a for screwing the screw S into a substantially central portion thereof.

  As shown in FIG. 3, the translucent cover 60 described above has a curved curved surface portion 61 formed in a region corresponding to the opening 52 in the housing 50, and a flat plate shape formed around the curved surface portion 61. And a peripheral edge 62. When the translucent cover 60 is attached to the housing 50 so that the translucent cover 60 is embedded in the opening 52, the peripheral edge 62 abuts on the holding portion 54 and is held by the holding portion 54. The housing 50 can hold the translucent cover 60.

  In the present embodiment, for example, reflected light when external light (that is, external light) such as sunlight is reflected on the surface of the translucent cover 60 (curved surface portion 61) is transmitted through the windshield 13. It is assumed that the curvature of the curved surface portion 61 is set so as not to be reflected to the driver 14 side. This means that the curved surface portion 61 is formed in a curved surface shape so that the reflected light reflected when receiving the external light is not reflected to the driver 14 side through the windshield 13.

  The housing 50 with the translucent cover 60 disposed thereon is a covering member made of a synthetic resin material or the like so as to cover the peripheral edge 62 of the translucent cover 60 and a required portion of the front wall 53 in the housing 50. 70 is disposed.

  The covering member 70 includes an opening window portion 71 corresponding to the opening portion 52 of the housing 50 and a substantially flat frame portion 72 that surrounds the four sides of the opening window portion 71. Then, in the frame portion 72, the peripheral edge of the left frame portion 73, which is the first frame portion located on the left side of the opening window portion 71 in FIG. A pair of locking portions 74 are formed so as to hang down.

  The locking portion 74 is directed outwardly so as to be substantially parallel to the plate surface of the front wall 53 from the lower end portion 74a formed downwardly hanging toward the engaging portion 56 and the lower end portion of the hanging portion 74. And a locking piece 74b made of a protruding collar.

  Further, in the frame portion 72, the right frame portion 75, which is the second frame portion located to the right of the opening window portion 71 in FIG. 4, penetrates a substantially circular shape at a position corresponding to the screw threaded portion 58a. A hole 75a is formed. In this example, three through holes 75a are provided along the right frame portion 75 as shown in FIG. Along with this, screw screwing portions 58 a are also provided at three locations along the right frame portion 75.

  Next, paying attention to the housing 50, the translucent cover 60, and the cover member 70, an assembly example for assembling these three members will be described with reference to FIG. In this case, first, the translucent cover 60 is assembled to the housing 50, and then the cover member 70 is further assembled to the housing 50 to which the translucent cover 60 is assembled.

  First, when the translucent cover 60 is assembled to the housing 50, detailed illustration is omitted. However, the curved portion 61 of the translucent cover 60 is bent toward the housing 50 side so that the translucent cover 60 is transparent to the upper side of the housing 50. The light cover 60 is positioned. At this time, the housing 50 and the translucent cover 60 are aligned so that the holding portion 54 of the housing 50 and the peripheral portion 62 of the translucent cover 60 face each other.

  When the translucent cover 60 is translated from this state to the housing 50 side, the peripheral edge portion 62 and the holding portion 54 come into contact with each other, and the peripheral edge portion 62 is held by the holding portion 54. The cover 60 is placed (arranged) on the housing 50 (see FIG. 5A).

  Next, in order to assemble the cover member 70 and the housing 50 on which the translucent cover 60 is mounted, detailed illustration is omitted, but with the engaging portion 74 of the cover member 70 facing the housing 50 side, the engagement is performed. The cover member 70 and the housing 50 on which the translucent cover 60 is placed are aligned so that the stop portion 74 and the space portion 56b of the engaging portion 56 face each other.

  Then, when the cover member 70 is translated from this state to the housing 50 side, the locking portion 74 passes through the space portion 56b formed by providing the locking frame 56a, and eventually the lower end portion of the locking portion 74 At the same time that the locking piece 74b located on the surface contacts (contacts) the support portion 57, the bottom surface of the frame portion 72 contacts (contacts) the front wall 53 and the peripheral edge 62 (FIG. 5B). )reference).

  Next, when the covering member 70 is moved along the left side (in the direction of the arrow X) from the state shown in FIG. 5B, the two locking pieces 74b are moved to the bottom wall portion of the locking frame 56a and the support portion 57. Each of the three through holes 75a in the right frame portion 75 is in communication with the screw threaded portion 58a in the boss portion 58 (see FIG. 5C). Finally, the screw S is screwed into the screw threaded portion 58a through the through hole 75a, so that the cover member 70 is placed on the housing 50 on which the translucent cover 60 is placed as shown in FIG. It will be fixed to.

  The mounting of the translucent cover 60 on the housing 50 (opening 52) and the fixing of the cover member 70 to the housing 50 are performed in the area A indicated by the one-dot chain line in FIG. By protruding beyond the upper side, it is possible to perform the operation while the housing 50 is attached to the instrument panel 11.

  By the way, after fixing the cover member 70 on the housing 50 on which the translucent cover 60 is placed as described above with the housing 50 attached to the instrument panel 11, for example, the translucent cover 60 (curved surface portion). 61) When the translucent cover 60 is damaged by a hard object directly hitting the surface, only the translucent cover 60 is attached with the housing 50 attached to the instrument panel 11 as follows. Can be removed.

  That is, when the translucent cover 60 is damaged, the work as shown in FIG. 5A, FIG. 5B, and FIG. Just do it. Specifically, first, after removing all the three screws S in order to release the screwed state of the screws S to the screw threaded portion 58a, the covering member until the entire locking piece 74b is positioned in the space portion 56b. 70 is moved to the right (in the direction opposite to the arrow X direction in FIG. 5B).

  In this state, the covering member 70 is parallel to the upper side so as to release the contact state between the locking piece 74b and the support portion 57 and the contact state between the front wall 53 and the peripheral edge portion 62 and the frame portion 72. The cover member 70 can be easily removed from the housing 50 by moving and the locking piece 74b passing through the space 56b.

  Then, the cover member 70 is removed from the housing 50, so that only the damaged translucent cover 60 is placed on the housing 50 as shown in FIG. In this state, for example, when an operator closes the suction surface of a suction cup (not shown) to the surface of the curved surface portion 61 and then lifts the suction cup, the translucent cover 60 is attracted to the suction surface, so The light cover 60 can be easily removed from the housing 50.

  Then, again according to the above-described order of FIGS. 5A to 5C, the housing 50 is attached to the instrument panel 11 and the new translucent cover 60 and the cover member 70 that are not damaged are housed. 50 can be easily attached.

  As described above, in the present embodiment, the liquid crystal display element 22 that emits the display light L, the concave mirror 41 that reflects the display light L, the liquid crystal display element 22 and the space 51 that houses the concave mirror 41 and the concave mirror 41 are reflected. The translucent cover 60 is provided with a housing 50 having an opening 52 through which the display light L passes. The translucent cover 60 formed separately from the housing 50 has a peripheral portion 62 formed in the housing 50. The display light L, which is arranged in the opening 52 so as to be held by the concave mirror 41 and is reflected by the concave mirror 41, is projected onto the windshield 13 through the translucent cover 60 (curved surface 61) and displayed to the driver 14. In the head-up display device, the cover member 70 that covers the required portion of the front wall 53 and the peripheral portion 62 is provided, and the cover member 70 is attached to and detached from the housing 50. Thus provided for the capability, that was feasible constituting the attachment and detachment of the housing 50 of the covering member 70.

  Therefore, when the translucent cover 60 is damaged, the display device 12 (housing 50) is attached to the instrument panel 11 without bothering to remove the entire display device 12 as a display unit from the instrument panel 11 as in the past. As a result, the translucent cover 60 can be easily replaced. That is, when the translucent cover 60 is damaged, not only the damaged translucent cover 60 but also other parts that are not damaged (the liquid crystal display element 22, the concave mirror 41, the housing 50, etc.) are simultaneously replaced. The contradiction that has occurred in the past will be resolved.

  In the present embodiment, the example in which the translucent cover 60 and the cover member 70 are formed by separate members has been described. However, as a modification of the present embodiment, the translucent cover 60 and the cover member 70 are separated by separate members. However, even if they are integrally formed, the same operational effects as those of the above-described embodiment can be obtained. In this case, although detailed illustration is omitted, in FIG. 3, between the inner wall surface of the opening 52 located on the boss 58 side and the outer wall surface of the peripheral edge 62 adjacent thereto, and adjacent to the holding portion 54. It is necessary to provide a gap portion that allows the covering member 70 to move in the direction of the arrow X and the direction of the covering member 70 in the direction opposite to the arrow X direction between the curved surface portion 61 and the outer wall surface.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. 6. The same reference numerals are used for the same or corresponding parts as in the first embodiment, and the detailed description thereof will be made. Is omitted. In the second embodiment, the cover member 70, the holding portion 54, etc. employed in the first embodiment are eliminated, and the housing 50 is transparently covered so as to cover the required portion of the front wall 53 and the opening 52. An optical cover (translucent member) 80 is placed (arranged).

  The translucent cover 80 in the second embodiment has a configuration in which the shape of the peripheral edge 62 is deformed with respect to the translucent cover 60 employed in the first embodiment. The curved surface portion 61 has substantially the same shape as the curved surface portion 61 adopted, and includes a curved surface portion 81 provided so as to correspond to the opening portion 52, and a substantially flat frame portion 82 surrounding the curved surface portion 81. In this case, it is desirable to provide a black printed layer or the like on the surface of the frame portion 82 in order to suppress external light from being reflected on the surface of the frame portion 82.

  In the frame portion 82, a pair of left and right frame portions 83, which are the third frame portions located on the left side of the curved surface portion 81 in FIG. The locking portion 84 is formed to hang down. The locking portion 84 is directed outwardly so as to be substantially parallel to the plate surface of the front wall 53 from the lower end portion of the hanging portion 84a that is formed hanging down toward the engaging portion 56 side. And a locking piece 84b made of a protruding collar.

  Further, in the frame portion 82, the right frame portion 85, which is the fourth frame portion positioned to the right of the curved surface portion 81 in FIG. 6, has a substantially circular through hole at a position corresponding to the screw threaded portion 58a. 85a is formed. Note that three through holes 85a are provided along the right frame portion 85 in the same manner as in the first embodiment. Along with this, screw screwing portions 58 a are also provided at three locations along the right frame portion 85.

  In FIG. 6, T is a gap formed between the inner wall surface of the opening 52 and the outer wall surface of the curved surface portion 81 adjacent to the opening 52. The gap portion T is damaged when the curved surface portion 81 is damaged. When the light cover 80 is removed from the housing 50, the light cover 80 includes a clearance provided to move the light cover 80 in the direction opposite to the arrow X direction.

  That is, in the second embodiment, the curved surface portion 61, the frame portion 72 (the left frame portion 73 and the right frame portion 75), and the locking portion 74 (the hanging portion 74a and the locking piece 74b) employed in the first embodiment. ), Instead of the through hole 75a, a curved surface portion 81, a frame portion 82 (left frame portion 83 and right frame portion 85), a locking portion 84 (hanging portion 84a and locking piece 84b), and a through hole 85a are employed. It has a configuration. The curved surface portion 81, the frame portion 82, the locking portion 84, the individual shapes and functions of the through holes 85a employed in the second embodiment are the same as the curved surface portion 61, the frame employed in the first embodiment. The portion 72, the locking portion 74, and the through hole 75a are substantially the same.

  Therefore, when the curved surface portion 81 of the translucent cover 80 is damaged, after the screwed state of the screw S to the screwed portion 58a is released from the state illustrated in FIG. The translucent cover 80 is moved in the direction opposite to the direction of the arrow X until it is positioned in the space portion 56b. Finally, the translucent cover 80 is translated upward, and the locking piece 84b is moved into the space portion. If it passes through 56b, the translucent cover 80 can be easily removed from the housing 50. Although not described in detail, a new translucent cover 80 can be easily attached to the housing 50 by performing an operation completely opposite to the translucent cover removal operation.

  That is, according to the second embodiment, the translucent cover 80 is detachably provided to the housing 50. In other words, the translucent cover 80 can be attached to and detached from the housing 50. With the configuration, when the curved surface portion 81 is damaged, the display unit (housing 50) is attached to the instrument panel 11 without bothering to remove the entire display unit from the instrument panel 11 as in the past. The replacement work of the translucent cover 80 can be easily performed, and the same effect as the first embodiment can be obtained.

  In each of the above embodiments, the example in which the display light L emitted from the liquid crystal display element 22 is projected onto the windshield 13 has been described. For example, the display light L is favorably reflected in the direction of the driver 14 on the windshield 13. A combiner film may be provided, or the display light L may be projected onto a dedicated reflecting member different from the windshield 13.

1 is a schematic view of a head-up display device according to a first embodiment of the present invention. It is sectional drawing of the display apparatus by the same embodiment. It is an expanded sectional view which expands and shows the A section in FIG. It is a figure which shows a part of housing, a translucent member, and a cover member when it sees from the arrow B direction in FIG. (A) is a figure which shows the state which has arrange | positioned the translucent member by the same embodiment in the housing, (b) is the state which mounted the cover member in the housing by which the translucent member by the same embodiment was arrange | positioned. (C) is a figure which shows the state after moving the cover member by the same embodiment to the arrow X direction. It is principal part sectional drawing of the display apparatus by 2nd Embodiment of this invention.

Explanation of symbols

13 Windshield (projection member)
14 Driver (observer)
22 Liquid crystal display elements (display elements)
41 Concave mirror (reflective member)
DESCRIPTION OF SYMBOLS 50 Housing 52 Opening part 53 Front wall 54 Holding part 56 Engagement part 56a Engagement frame 56b Space part 57 Support part 58a Screw screw part 60 Translucent cover (translucent member)
61 Curved surface portion 62 Peripheral portion 70 Cover member 74 Locking portion 74a Hanging portion 74b Locking piece 75a Through hole L Display light S Screw

Claims (4)

A housing having a display element that emits display light, a reflective member that reflects the display light, a space that houses the display element and the reflective member, and an opening through which the display light reflected by the reflective member passes. And
A translucent member formed separately from the housing is disposed so as to cover the opening,
In a head-up display device that projects the display light reflected by the reflecting member onto a projection member through the translucent member and displays it to an observer,
The head-up display device, wherein the translucent member is detachably attached to the housing. A housing having a display element that emits display light, a reflective member that reflects the display light, a space that houses the display element and the reflective member, and an opening through which the display light reflected by the reflective member passes. And
The translucent member formed separately from the housing is disposed in the opening so that the peripheral edge thereof is held by a holding portion formed in the housing,
In a head-up display device that projects the display light reflected by the reflecting member onto a projection member through the translucent member and displays it to an observer,
A covering member covering at least the peripheral edge;
The head-up display device, wherein the covering member is detachably provided on the housing. The head-up display device according to claim 2, wherein the covering member and the translucent member are integrally formed. The translucent member includes a curved surface portion formed in a region corresponding to the opening, and the curved surface portion prevents reflection light when external light is reflected on the surface of the curved surface portion from being reflected on the observer side. The head-up display device according to claim 1, wherein the curvature is set.

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