JP2010064709A - Head-up display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a head-up display capable of ensuring impact absorption function of a pedestrian injury reduction structure of a vehicle body. <P>SOLUTION: The head-up display 10 has a fixed member 14 projected from a sidewall part 13 of a housing 11 and bonded to a bracket 50 provided at a vehicle body side. The fixed member 14 has: a support part 15 supported on the bracket 50; a fastening part 19 fastened to the bracket 50; and a connection part 16 for connecting the support part 15 and a sidewall part 13 of the housing 11. A groove 17 is formed on the connection part 16 and a thin part 18 is formed at a bottom part side of the groove 17. The thin part 18 is broken when predetermined external force is applied to the housing 11 and a bonding relationship of the housing 11 and the bracket 50 is released. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a head-up display device.

  A head-up display device that is disposed below the instrument panel and emits display light toward the front windshield through the opening of the panel, thereby allowing the driver to visually recognize the display light reflected on the windshield as a virtual image. It is known (see, for example, Patent Document 1).

The head-up display device described in Patent Document 1 is a vehicle body arranged below an instrument panel arranged so as to project toward the passenger compartment side and so as to project toward the instrument panel and the passenger compartment side. Are accommodated in a space formed between the skeleton and the skeleton.
JP 2004-196020 A

  Usually, the head-up display device is fixed to the vehicle body side by a bracket. However, as described in Patent Document 1, when the head-up display device is accommodated in the space below the instrument panel and is fixed to the vehicle body side by a bracket, walking when the vehicle collides with a pedestrian The head-up display device hinders the downward movement of the vehicle body structure such as the front windshield, the instrument panel, and the cowl for alleviating the impact on the person. This reduces the function of mitigating the impact applied to the pedestrian's head and legs.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a head-up display device capable of ensuring the shock absorbing function of the pedestrian injury reducing structure of the vehicle body.

The invention according to claim 1 is disposed below the front windshield so as to project toward the passenger compartment side of the vehicle body, and is housed in a space formed below the instrument panel fixed to the vehicle body. The head-up allows the driver to visually recognize the display light reflected on the front windshield as a virtual image by emitting the display light toward the front windshield through the opening of the instrument panel. A display device,
A display light generator that generates display light; and a housing that accommodates the display light generator. The housing is a fixing member that couples the housing and the bracket. When a predetermined external force is applied to the housing, the housing It has the fixing member which cancels | releases the connection relationship with a bracket, It is characterized by the above-mentioned.

  According to this configuration, when a predetermined external force is applied to the housing of the head-up display device, the coupling relationship between the housing and the bracket is released. Therefore, the head-up display device is installed in the space formed below the instrument panel. Can move freely.

  Since the head-up display device can move freely in the space, the downward movement of the front windshield, instrument panel, cowl, etc. when the vehicle collides with a pedestrian is accommodated in the space. It is possible to suppress obstruction by the head-up display device.

  By using such a head-up display device, a vehicle body structure such as a front windshield, an instrument panel, and a cowl is provided even in a vehicle in which the head-up display device is accommodated below the instrument panel. It is possible to ensure an impact absorbing function that is exhibited by moving downward.

  According to a second aspect of the present invention, the fixing member has a coupling portion that is coupled to the bracket, and a weakened portion that is formed between the coupling portion and the housing and breaks when a predetermined external force is applied to the housing. It is characterized by.

  According to this configuration, the coupling relationship between the head-up display device and the bracket is released when the fixing member side is broken. That is, the coupling relationship can be released without damaging the bracket provided on the vehicle body side.

  According to a third aspect of the present invention, the fragile portion is a thin portion formed by forming a groove in a connecting portion that connects the coupling portion and the housing.

  According to this configuration, the fragile portion is a thin portion formed by forming a groove in the connecting portion that connects the coupling portion and the housing. According to this, the thickness of a thin part can be adjusted by changing the depth of a groove | channel. With a simple act of changing the depth of the groove, it is possible to easily adjust the load when releasing the coupling relationship between the head-up display device and the bracket.

  The invention described in claim 4 is characterized in that the fixing member protrudes from a side wall portion located in the front-rear or left-right direction with respect to the vehicle body of the housing.

  According to this configuration, since the fixing member protrudes from the side wall portions positioned in the front-rear and left-right directions with respect to the vehicle body of the housing, the bracket is also disposed at a corresponding position. For this reason, when the coupling relationship between the housing and the bracket is released, it is possible to prevent the bracket from hindering the downward movement of the head-up display device.

  The invention according to claim 5 is characterized in that the fixing member protrudes from the side wall portion located on the left and right with respect to the vehicle body of the housing.

  According to this configuration, since the fixing member protrudes from the side wall portion positioned on the left and right with respect to the vehicle body of the housing, the fixing member is located on the side wall portion positioned on the front and rear with respect to the vehicle body of the housing. Compared with the case where the head-up display device protrudes from the head, the workability when the head-up display device is attached to the vehicle body is improved.

  Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. In addition, the overlapping description is abbreviate | omitted by attaching | subjecting the same code | symbol to the component corresponding in each embodiment.

(First embodiment)
(About the structure of the car body)
FIG. 1 shows a vehicle body 1 in the vicinity of an instrument panel 70 provided in front of a passenger compartment 3 of a vehicle equipped with a head-up display device (hereinafter referred to as “HUD”) 10 according to a first embodiment of the present invention. It is sectional drawing which showed the structure typically. In addition, the arrow which shows the front-back and up-down direction in a figure has shown the direction in the state which mounted HUD10 in the vehicle. FIG. 2 is a cross-sectional view schematically showing the structure of the vehicle body 1 when it collides with a pedestrian.

  The vehicle body 1 in the front part of the passenger compartment 3 includes a cowl 40, an instrument panel 70, a cowl toe breath 60, a lean reinforcement 61, and the like.

  The cowl 40 is made of a steel plate or a plate-like aluminum alloy, and separates the engine room 2 and the vehicle compartment 3 of the vehicle. The cowl 40 has an under cowl 41 and an upper cowl 42 coupled to the upper end portion of the under cowl 41 by spot welding or the like. The under cowl 41 is disposed along the vehicle width direction and the vehicle vertical direction.

  The upper cowl 42 has an inner cowl 43 and an outer cowl 46. The inner cowl 43 has a bent portion 44 at an intermediate portion. The bent portion 44 is formed so as to protrude toward the engine room 2 side. The inner cowl 43 has a flange portion 45 that protrudes toward the passenger compartment 3 at the upper end. The outer cowl 46 has a flange portion 47 which is coupled to the flange portion 45 of the inner cowl 43 by spot welding or the like at the lower end portion and protrudes toward the vehicle compartment 3 side. The outer cowl 46 has a support portion 48 that extends from the flange portion 47 to the engine room 2 side. The support portion 48 supports the front windshield 80 via the adhesive 49.

  The instrument panel 70 is disposed below the front windshield 80 so as to protrude from the cowl 40 toward the vehicle compartment 3 side. The instrument panel 70 includes a resin base, an elastic portion made of, for example, urethane material that covers the outer side of the base, and a skin portion that covers the outer side of the elastic portion. In FIG. 1, the instrument panel 70 is expressed as a single layer for convenience of explanation.

  The instrument panel 70 includes a flange (not shown) formed on the cowl 40 and flanges 45 and 47 of the cowl 40 fitted into a fitting portion 71 provided on the lower surface of the front end of the instrument panel 70. It is fixed to the vehicle body 1 by being coupled.

  The cowl 40 has a structure that alleviates the impact applied to the pedestrian's head and legs when colliding with the pedestrian. As shown in FIG. 2, when a predetermined impact load F is applied from the front windshield 80, the bent portion 44 of the inner cowl 43 is deformed (bent). The upper cowl 42 moves downward of the vehicle body 1 while being deformed. At this time, the fitting portion 71 of the instrument panel 70 is disengaged from the flange portions 45 and 47, and a part of the instrument panel 70 moves downward of the vehicle body 1 together with the upper cowl 42. Thereby, this load F is absorbed and a pedestrian obstacle can be reduced.

  In the vicinity of the front end of the instrument panel 70, an opening 72 through which display light 35 emitted from the HUD 10 described later is passed is formed. The opening 72 is provided with a translucent cover 73 that transmits light.

  The cowl toe brace 60 is made of steel, aluminum alloy, or the like, and is disposed so as to protrude from the under cowl 41 toward the vehicle compartment 3 side. A space 75 for accommodating devices such as the HUD 10 is formed between the cowl brace 60 and the instrument panel 70.

  A lean reinforcement 61 is joined to the end of the cowl toe brace 60 on the side of the passenger compartment 3 by welding or the like. The lean reinforcement 61 is a structure extending in the vehicle width direction, and improves the strength of the vehicle body 1. The lean reinforcement 61 holds a steering device (not shown) extending from the engine room 2 through the under cowl 41 toward the driver's seat in the passenger compartment 3.

  In a space portion 75 formed between the instrument panel 70 and the cowl toe breath 60, devices such as the HUD 10, the meter unit 90, and the air conditioner side face duct 92 are accommodated. In this space portion 75, in addition to the above-described devices, a wire harness 93 and the like for controlling power supply to the HUD 10 and the meter unit 90 are accommodated.

  The meter unit 90 is arranged so that the driver can visually recognize the display surface 91 from an opening 74 formed at the rear end of the instrument panel 70. The meter unit 90 is fixed by fastening with a bracket and a screw provided on the instrument panel 70. On the engine room 2 side of the meter unit 90, a resin air conditioner side face duct 92 that guides the adjusted air whose temperature / humidity is adjusted by an air conditioner to outlets provided on the left and right sides of the instrument panel 70 is disposed. ing. Further, the HUD 10 is arranged on the engine room 2 side of the duct 92. In this embodiment, the meter unit 90, the air conditioner side face duct 92, and the HUD 10 are arranged side by side in the front-rear direction of the vehicle body 1.

(About HUD)
Next, the HUD 10 will be described with reference to FIG. FIG. 3 is a perspective view schematically showing the HUD 10. In addition, the arrow which shows the front-back and up-down direction in a figure respond | corresponds to the arrow as described in FIG. In the left and right arrows in the figure, the left arrow corresponds to the near side in FIG. 1, and the right arrow corresponds to the far side.

  The HUD 10 includes a display 31, a reflecting mirror 32, a concave mirror 33, and the like. The display device 31, the reflecting mirror 32, and the concave mirror 33 constitute a display light generator 30. The HUD 10 has a housing 11 made of resin (for example, polypropylene) that houses the display light generator 30. The housing 11 includes a case 12 that houses the display light generator 30 and a cover 21 that covers an opening of the case 12. The two left and right side wall portions 13 located on the left and right sides of the vehicle body 1 in the case 12 are provided with fixing members 14 held by brackets 50 extending from the cowl to breath 60 toward the space portion 75 ( (See FIG. 1). Thereby, HUD10 can be fixed in the predetermined position in the space part 75. FIG. The structure of the fixing member 14 will be described later.

  The cover 21 has an opening 22 through which the display light 35 generated by the display light generator 30 passes. A transparent cover 23 through which the display light 35 is transmitted is provided in the opening 22.

  For example, the display 31 includes a liquid crystal panel, a light source, and the like, displays vehicle information such as a vehicle speed on the liquid crystal panel as an image, and emits the display light 35 toward the reflecting mirror 32. The image displayed on the liquid crystal panel is not only vehicle information but also an image in front of the vehicle that is attached to the vehicle, for example, created based on a video signal sent from a near infrared camera (not shown). Alternatively, it may be an arrow for route guidance created based on the operation of a navigation device (not shown).

  The reflecting mirror 32 reflects the display light 35 emitted from the display 31 and guides it to the concave mirror 33. The concave mirror 33 reflects the display light 35 reflected by the reflecting mirror 32 toward a predetermined position of the front windshield 80.

  Here, the concave mirror 33 is provided with an angle adjusting mechanism 34 that changes the inclination angle of the concave mirror 33. The angle adjusting mechanism 34 is composed of a motor, a speed reducer, and the like. The angle adjustment mechanism 34 operates based on an operation of a switch or the like provided on the instrument panel 70, for example. Thereby, the irradiation position of the display light 35 to the front windshield 80 can be changed freely.

  As shown in FIG. 1, the display light 35 reflected by the concave mirror 33 and applied to the front windshield 80 reaches the driver's eyes as a virtual image as if it is reflected outside the front windshield 80.

(About fixing members)
Next, the fixing member 14 provided in the housing 11 of the HUD 10 will be described based on FIGS. 3 and 4. FIG. 4 is a cross-sectional view schematically showing the IV-IV line in FIG.

  The fixing member 14 is provided so as to protrude from the two left and right side wall portions 13 in the case 12. The fixing member 14 is made of resin like the case 12 and is formed integrally with the left and right side wall portions 13 of the case 12. The fixing member 14 includes a support part 15, a connecting part 16, and a fastening part 19.

  The support portion 15 is formed in a plate shape long in the vehicle front-rear direction, and is supported by the upper end surface of the support portion 51 on the bracket 50 side as shown in FIG. 1 to support the HUD 10. A connecting portion 16 that connects the support portion 15 and the left and right side wall portions 13 is formed on the left and right side wall portion 13 side of the support portion 15.

  The fastening portions 19 are provided at both ends of the support portion 15 in the vehicle front-rear direction, and fastened with the fastening portions 52 on the bracket 50 side, for example, with screws 20 (see FIGS. 1 and 4). Thereby, the bracket 50 and the housing 11 are firmly coupled, and the position of the HUD 10 in the space 75 is fixed. Here, the coupling portion described in the claims is formed by the support portion 15 and the fastening portion 19 in the present embodiment.

  As shown in FIG. 3, the connecting portion 16 is formed with a groove 17 extending in the direction along the left and right side wall portions 13 of the case 12. By forming the groove 17 in the connecting portion 16, a thin portion 18 having a thickness smaller than that of the support portion 15 is formed on the bottom side of the groove 17. The thin portion 18 is weaker than the support portion 15. The thin portion 18 corresponds to the fragile portion described in the claims.

  The thin-walled portion 18 formed in this way has such a thickness that it breaks when a predetermined external force is applied to the housing 11 with the fastening portion 19 fastened to the fastening portion 52 on the bracket 50 side. ing. Only by changing the depth of the groove 17, the thickness of the thin portion 18 can be adjusted. According to this configuration, it is possible to easily adjust the condition for releasing the coupling relationship between the bracket 50 and the HUD 10 by a simple action of changing the depth of the groove 17. The setting of the thickness of the thin portion 18 will be described in detail later. In addition, the groove | channel 17 may be formed only in the lower surface of the connection part 16, and may be formed in both upper and lower surfaces.

(About the state of HUD at the time of pedestrian collision)
Next, the state of the HUD at the time of a pedestrian collision will be described based on FIG. As shown in FIG. 2, when a predetermined impact load F is applied to the front windshield 80, the bent portion 44 of the inner cowl 43 is deformed as described above, and a part of the instrument panel 70 is placed below the vehicle body 1. Moving.

  However, the position of the HUD 10 is fixed by being fixed to the bracket 50 provided on the cowl toe brace 60 that is not easily deformed even when a load F is applied to the front windshield 80. For this reason, the instrument panel 70 and the upper cowl 42 are pushed by the front windshield 80 and try to move downward of the vehicle body 1, but the movement is hindered by the HUD 10.

  In the present embodiment, as shown in FIG. 2, when the instrument panel 70 and the upper cowl 42 move downward and a predetermined external force is applied to the housing 11, the fixing member 14 is broken, and the housing 11, the bracket 50, The connection relationship of is released. As a result, the HUD 10 can freely move in the space 75, and the front windshield 80, the instrument panel 70, and the upper cowl 42 move downward of the vehicle body 1 to absorb the impact. It can be done.

  By using such a HUD 10, the front windshield 80, the instrument panel 70, the upper cowl 42, etc. The impact absorbing function exhibited by moving to can be ensured.

  Further, in the present embodiment, when a predetermined external force is applied to the housing 11, not the bracket 50 side but the fixing member 14 side is broken so that the coupling relationship between the housing 11 and the bracket 50 is released. According to this, the coupling relationship can be released without damaging the bracket 50.

  Furthermore, in this embodiment, the fixing member 14 is provided so as to protrude from the left and right side wall portions 13 of the case 12, and the bracket 50 that is coupled to the fixing member 14 is also provided at a position corresponding thereto. Therefore, it is possible to prevent the bracket 50 from hindering the downward movement of the HUD 10 when a predetermined external force is applied to the housing 11 and the HUD 10 moves downward, that is, drops.

  In the present embodiment, the fixing member 14 is provided at the left and right side wall portions 13 of the case 12, but the HUD 10 is dropped even at the front and rear side wall portions positioned front and rear with respect to the vehicle body 1. In doing so, the bracket 50 has an effect of preventing the downward movement of the HUD 10.

  The fixing member 14 is preferably provided on the left and right side wall portions 13 of the case 12. As shown in FIG. 1, the HUD 10 is disposed below a position where the front windshield 80 and the instrument panel 70 are relatively close to each other. For this reason, when the fixing member 14 is provided on the side wall portion positioned front and rear or up and down with respect to the vehicle body 1, workability when the HUD 10 is attached to the vehicle body 1 is deteriorated. On the other hand, when the fixing member 14 is provided on the left and right side wall portions 13 of the case 12, the workability at the time of mounting is better than that provided on the side wall portions positioned in the front-rear direction or the vertical direction. Become.

(Adjustment of conditions for releasing the connection between bracket and HUD)
Next, a method for adjusting the condition for releasing the coupling between the bracket 50 and the HUD 10 will be described with reference to FIGS. FIG. 5 is a graph showing the relationship between the length in the front-rear direction of the connecting portion 16 in the fixing member 14 and the load resistance of the thin portion 18.

  The fixing member 14 should be dimensioned in advance so that the thin portion 18 is broken so that the coupling relationship between the bracket 50 and the HUD 10 is released only when the external force applied from the front windshield 80 reaches a predetermined amount. is there.

  Here, in addition to the external force applied by the downward movement of the instrument panel 70 when colliding with a pedestrian or the like, the external force is also applied to the thin portion 18 of the fixing member 14 by vibration during normal traveling of the vehicle.

  In the present embodiment, the load resistance required for the fixing member 14 is set to be greater than 98 (N) and 500 (N) or less. Here, the load resistance means a load applied to the housing 11 when the fixing member 14 is broken. The load resistance on the lower limit side is obtained by assuming that the acceleration of 5 times the gravity acts on the HUD 10 while the vehicle is running, and further calculating the safety factor as 2. In the present embodiment, the weight of the HUD 10 is calculated as 1 kg. On the other hand, the load capacity on the upper limit side is obtained under the condition that it is possible to ensure shock absorption when colliding with a pedestrian.

  Note that the lower limit value and the upper limit value should be appropriately changed depending on the type and structure of the vehicle body 1 on which the HUD 10 is mounted. In this embodiment, since the fixing member 14 is provided on each of the left and right side wall portions 13, the lower limit of the load resistance F1 required for each fixing member 14 is 98/2 = 49 (N). Larger than 500/2 = 250 (N).

  Here, the dimensions of each part of the fixing member 14 are determined as follows. As shown in FIG. 4, the length in the front-rear direction of the vehicle body 1 at the connecting portion 16 of the fixing member 14 is L0 (mm), from the fastening center (center of the screw fastening portion) to the left and right side wall portions 13 of the case 12. Is the distance L1 (mm), and the thickness of the thin portion 18 of the connecting portion 16 is t (mm). And the load resistance F1 calculated | required from these dimensions (L0, L1, t) was calculated | required using the numerical formula represented by F1 = (L0 * t2 * (sigma)) / (6 * L1). Here, σ is a yield stress, which is 29.4 MPa in the present embodiment. “6” in the above formula is a section modulus.

  In the present embodiment, the distance L1 (mm) is fixed to 11 (mm) in consideration of mountability in the space 75. For this reason, in the present embodiment, the length L0 in the front-rear direction of the connecting portion 16 and the thickness t (mm) of the thin portion 18 so that the load resistance F1 obtained by the above formula is included in the above range. ) Was established.

  In this embodiment, L0 (mm) and t (mm) are set such that the calculated load resistance F1 breaks in the vicinity of the upper limit value. By setting the load resistance F1 in the vicinity of the upper limit value, it is possible to reliably avoid the fixing member 14 from being broken by the vibration of the vehicle body 1. According to FIG. 5 showing the change of the load resistance F1 when L0 and t obtained based on the above formula are changed, the thickness of the thin portion 18 is set to t = 3.2 mm, 3 mm, and 2 mm. In this case, the combination closest to the upper limit value of the load resistance F1 was a combination of L0 = 55 mm and t = 3.2 mm. In the present embodiment, L0 = 55 mm and t = 3.2 mm are adopted as the optimum dimensions of the fixing member 14.

  When the load resistance F1 is brought closer to the upper limit value, the thickness of the thin portion 18 tends to be shorter as the thickness of the thin portion 18 is increased. On the contrary, the thickness of the thin portion 18 is decreased. The longer L0 tends to be, the longer it becomes. The values of t and L0 may be appropriately changed according to the workability of the groove 17 and the size of the housing 11.

(Second Embodiment)
The second embodiment of the present invention is a modification of the first embodiment. In 2nd Embodiment, the arrangement position of the said bracket 50a differs from the bracket 50 of 1st Embodiment.

  FIG. 6 is a cross-sectional view schematically showing the structure of the vehicle body 1 in the vicinity of the instrument panel 70 provided in front of the passenger compartment 3 of the vehicle equipped with the HUD 10 according to the second embodiment of the present invention. FIG. 7 is a cross-sectional view schematically showing the structure of the vehicle body 1 when it collides with a pedestrian.

  As shown in FIG. 6, the bracket 50 a coupled to the fixing member 14 is provided on the instrument panel 70. The bracket 50 a has a fastening portion 52 a and is fastened to the fastening portion 19 of the fixing member 14 with, for example, a screw 20. The structure of the fixing member 14 and the structures of the cowl 40, the cowl toe brace 60, and the lean reinforcement 61 of the vehicle body 1 are the same as those in the first embodiment.

  As shown in FIG. 7, when a predetermined impact load F is applied from the front windshield 80 by colliding with a pedestrian, the bent portion 44 of the inner cowl 43 is deformed (bent). Thereby, the load F is absorbed. At this time, when the bent portion 44 of the inner cowl 43 is deformed, the fitting portion 71 is detached from the flange portions 45 and 47, and a part of the instrument panel 70 moves downward of the vehicle body 1. The HUD 10 moves downward together with the instrument panel 70.

  When the instrument panel 70 moves downward by a predetermined distance, an external force from the cowl toe brace 60 positioned below the instrument panel 70 acts on the housing 11 of the HUD 10 with the space 75 interposed therebetween.

  When the external force exceeds the load resistance of the thin portion 18, the thin portion 18 of the fixing member 14 is broken and the coupling relationship between the housing 11 and the bracket 50 a is released. As a result, the HUD 10 can move freely in the space 75, and the front windshield 80, the instrument panel 70, and the upper cowl 42 move downward of the vehicle body 1 to absorb the impact. It can be done.

(Other embodiments)
In the first and second embodiments, the groove 11 is formed in the fixing member 14 as means for releasing the coupling relationship between the housing 11 and the brackets 50 and 50a when a predetermined external force is applied to the housing 11. Although the thin-walled portion 18 is adopted, other forms may be adopted as means for releasing the coupling relationship. For example, it may be a slit formed in the connecting portion 16 at a predetermined interval. Moreover, it is good also as a material with the physical-property value which fractures | ruptures when the predetermined external force is applied for the material employ | adopted for the connection part 16 of the fixing member 14. FIG.

It is sectional drawing which showed typically the structure of the vehicle body in the vicinity of the instrument panel provided in the front of the compartment of the vehicle carrying HUD by 1st Embodiment of this invention. It is sectional drawing which showed typically the structure of the vehicle body at the time of the vehicle in FIG. 1 colliding with a pedestrian. It is the perspective view which showed HUD typically. It is sectional drawing which showed the IV-IV line | wire in FIG. It is a graph which shows the relationship between the length of the front-back direction of the connection part in a fixing member, and the load resistance of a thin part. It is sectional drawing which showed typically the structure of the vehicle body in the vicinity of the instrument panel provided in the front of the vehicle interior of the vehicle carrying HUD by 2nd Embodiment of this invention. It is sectional drawing which showed typically the structure of the vehicle body at the time of the vehicle in FIG. 6 colliding with a pedestrian.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Car body, 10 Head-up display apparatus (HUD), 11 Housing, 12 Case, 13 Left right side wall part, 14 Fixing member, 15 Support part (joining part), 16 Connection part, 17 Groove, 18 Thin part (fragile part) , 19 Fastening part (joint part), 20 screw, 21 cover, 30 display light generator, 35 display light, 40 cowl, 41 under cowl, 42 upper cowl, 43 inner cowl, 46 outer cowl, 50 bracket, 51 support part 52 fastening parts, 60 cowl breath, 61 lean reinforcement, 70 instrument panel, 75 space, 80 front windshield

Claims (5)

A bracket that is disposed below the front windshield so as to project to the vehicle compartment side of the vehicle body, is housed in a space formed below the instrument panel fixed to the vehicle body, and is provided on the vehicle body side The head-up display device allows the driver to visually recognize the display light reflected on the front windshield as a virtual image by emitting display light toward the front windshield through the opening of the instrument panel. And
A display light generator that generates the display light; and a housing that houses the display light generator;
The housing includes a fixing member that couples the housing and the bracket, and releases a coupling relationship between the housing and the bracket when a predetermined external force is applied to the housing. Head-up display device.   The fixing member includes a coupling portion coupled to the bracket, and a fragile portion formed between the coupling portion and the housing and fractured when the predetermined external force is applied to the housing. The head-up display device according to claim 1.   The head-up display device according to claim 2, wherein the fragile portion is a thin-walled portion formed by forming a groove in a connecting portion that connects the coupling portion and the housing.   4. The head-up display device according to claim 1, wherein the fixing member protrudes from a side wall portion that is positioned front-rear or left-right with respect to the vehicle body of the housing. 5.   4. The head-up display device according to claim 1, wherein the fixing member protrudes from a side wall portion positioned on the left and right of the vehicle body of the housing. 5.

Images