JP6108874B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a vehicle display device.

  2. Description of the Related Art Conventionally, a display device for a vehicle that is attached to a vehicle instrument panel or the like and displays information such as vehicle information and navigation information is known. In recent years, a head that superimposes information with a scenery in front is visually recognized. Up-display devices have been proposed. This head-up display device includes an irradiation device that irradiates display light, and a combiner (reflecting plate) that reflects display light. The combiner is stored in the instrument panel, and can be moved between a storage position and a deployment position that is visible to the user.

  For example, Patent Literature 1 discloses a head-up display device that can switch between a storage position and a deployment position by rotating a combiner.

JP 2012-145902 A

  However, according to the technique disclosed in Patent Document 1, when the combiner is deployed, an object placed on the instrument panel may interfere with the combiner to drop the object, or between the windshield glass and the combiner. There is a possibility that objects will be caught in In addition, such a situation may cause damage to the combiner and the drive unit.

  The present invention has been made in view of such circumstances, and an object of the present invention is to suppress interference and pinching with the reflecting plate and to protect the apparatus.

In order to solve such a problem, the present invention includes a reflector, a reflector base that holds the reflector, a drive unit that is connected to the reflector base and performs an ascending operation of the reflector or a descending operation of the reflector, a cover for holding together for accommodating the base unit including a reflector base and the drive unit along the base unit to the lifting direction of the reflecting plate slidably interposed between the cover and the base unit, for supporting the base Suyunitto An elastic member; a detection unit that is provided on the cover and detects that the base unit is pushed down a predetermined amount from a reference position supported by the elastic member; and a control unit that controls the drive unit. When the detection unit determines that the base unit has been pushed down from the reference position by a predetermined amount during the raising operation of the reflector, To provide a vehicle display device to stop the upward movement of the.

  Here, in the present invention, it is desirable that the elastic member supports the base unit in a state of floating above the detection means by using the elastic force provided by itself.

  In the present invention, it is preferable that the elastic force of the elastic member is set in consideration of a reaction force acting on the reflecting plate.

  According to the present invention, when the reflecting plate interferes with an object on the instrument panel or an object is sandwiched between the windshield glass and the base unit, the base unit is pushed down from the reference position by a predetermined amount. . Since this pushed-down state can be detected by the detecting means, it is possible to appropriately determine the interference with the reflecting plate and the pinching. Moreover, when such a state is judged, the raising operation of the reflecting plate can be stopped. Thereby, interference with a reflector and pinching can be suppressed, and protection of an apparatus can be aimed at collectively.

The perspective view which shows the interior of the vehicle provided with the head-up display device Exploded perspective view schematically showing the configuration of the lifting device Exploded perspective view schematically showing the configuration of the lifting device Sectional drawing which shows the structure of a raising / lowering apparatus typically Explanatory drawing showing the configuration of the control system of the HUD device Explanatory drawing of combiner deployment position Explanatory drawing showing the operating state of the stop switch Explanatory drawing showing the interference state of the combiner Explanatory drawing showing the operating state of the stop switch

  FIG. 1 is a perspective view showing the interior of a vehicle provided with a head-up display device 1 according to the present embodiment. The head-up display device 1 (hereinafter referred to as “HUD device 1”) is a vehicle display device that is arranged on an instrument panel 200 of a vehicle and displays vehicle information and navigation information. An opening 200a is provided in the front portion of the driver's seat of the instrument panel 200, and the combiner 3 of the HUD device 1 is put in and out of the upper portion of the instrument panel 200 through the opening 200a.

  The HUD device 1 includes a combiner 3 that is a reflector, an elevating device 4 that raises and lowers the combiner 3 (see FIGS. 2 and 3), an irradiating device 5 (see FIG. 5), and a microcomputer 8 (FIG. 5) as control means. (See below).

  The combiner 3 is a half mirror, for example, and is composed of a plate glass and a light semi-transmissive film such as tin or silver deposited on one surface of the plate glass. The combiner 3 has translucency, and is formed so that the driver can see the front of the vehicle through the combiner 3.

  2 and 3 are exploded perspective views schematically showing the configuration of the lifting device 4. FIG. 4 is a cross-sectional view schematically showing the configuration of the lifting device 4. The elevating device 4 moves the combiner 3 from the storage position in which the combiner 3 is stored inside the instrument panel 200 to the deployed position in which the combiner 3 is pushed out to the upper part of the instrument panel 200. On the contrary, it is a device that moves the combiner 3 from the deployed position to the storage position. In this embodiment, the raising / lowering device 4 raises / lowers the combiner 3 up and down between the retracted position and the deployed position.

  The lifting device 4 is mainly composed of a cover 2, a drive unit 6, a reflector base 7, and a guide member 10.

  The cover 2 includes a substrate 20 having a substantially rectangular shape in plan view, a pair of upper and lower side wall portions 21 extending rearward from an edge portion extending in the left-right direction on the substrate 20, and extending vertically in the substrate 20. It is comprised with the left-right paired side wall part 22 extended toward the back from the existing edge part. The cover 2 includes an opening 2a by side wall portions 21 and 22 provided on the top, bottom, left and right.

  The drive unit 6 is connected to a reflector base 7 described later, and performs an ascending operation of the combiner 3 or a descending operation of the combiner 3. The drive unit 6 includes a female screw portion 60 connected to the reflector base 7, a feed screw 61 that is screwed into the female screw portion 60, and a motor 62 that rotates the feed screw 61. The drive unit 6 includes a drive gear 63 that is fixed to the output shaft of the motor 62 and transmits the driving force of the motor 62 to the feed screw 61, and a driven gear 64 that meshes with the drive gear 63. These elements are supported by struts 65.

  The female thread portion 60 is internally threaded. The feed screw 61 is composed of a screw shaft having a male screw cut on the outer surface thereof, and the screw shaft is arranged along the vertical direction. One end side (lower end side) of the feed screw 61 is fitted into the center opening of the driven gear 64, and the other end side (upper end side) of the feed screw 61 is rotatably supported by the support 65 via the bearing 69. Has been.

  In the drive unit 6, when the motor 62 is rotationally driven in a state where the male screw of the feed screw 61 and the female screw of the female screw portion 60 are screwed together, the drive gear 63 and the driven gear 64 are rotated. The feed screw 61 also rotates in synchronization with the rotation of the driven gear 64, and the reflector base 7 connected to the female screw portion 60 moves upward or downward with relative rotation between the male screw of the feed screw 61 and the female screw of the female screw portion 60. Moving. As will be described later, since the reflector base 7 holds the combiner 3, the ascending or descending operation of the combiner 3 can be performed in accordance with the ascent or descend of the reflector base 7.

  The reflector base 7 is a member for holding the combiner 3, is formed in a substantially rectangular shape, and is set to a size smaller than the size of the combiner 3. The reflecting plate base 7 is provided in the vicinity of the opening 2 a of the cover 2, and the combiner 3 held by the reflecting plate base 7 is set to be positioned behind the opening 2 a of the cover 2.

  The reflecting plate base 7 is formed with a pair of columnar portions 71 so as to protrude rearward, and screw holes are formed in the individual columnar portions 71 in the axial direction. The combiner 3 is fixed and held on the reflector base 7 by screwing the screw 72 into the screw hole of the column portion 71 through the through hole 31 formed in the combiner 3.

  The guide member 10 has a pair of guide racks 16. The guide member 10 has a pair of guide pins 17 that are attached to the reflector base 7 and slide along the guide grooves 16 </ b> A of the guide rack 16. Further, the guide member 10 is fitted to a rotating shaft 18 rotatably supported by the reflector base 7 and both ends of the rotating shaft 18, meshes with the rack 16B of the guide rack 16 and guide grooves 16A. And a pair of gears 19 that slide along the inside.

  Each guide rack 16 is formed in a rectangular plate shape, and is attached to the inside of the left and right side wall portions 22 of the cover 2 so that the longitudinal direction thereof is along the vertical direction. Each guide rack 16 has a step shape such that the front side is thicker than the rear side. Each guide rack 16 is constituted by a guide groove 16A formed extending in the vertical direction and a rack 16B formed along the front side of the guide groove 16A. The rack 16 </ b> B is formed by cutting a plurality of teeth at the step portion of the guide rack 16.

  In the guide member 10, when the pair of gears 19 is positioned at the upper end of the guide groove 16A, the combiner 3 is positioned at the deployed position. On the other hand, when the pair of guide pins 17 is positioned at the lower end of the guide groove 16A, the combiner 3 is positioned at the storage position.

  In the elevating device 4 having such a configuration, the cover 2 accommodates a base unit including the drive unit 6 and the reflector base 7 therein. An opening 25 is formed at a predetermined position on the upper surface of the cover 2, and a cylindrical body 26 is erected at a predetermined position on the lower surface of the cover 2. The upper end side of the feed screw 61 is inserted into the opening 25, and the lower end side of the feed screw 61 is inserted into the cylindrical body 26. The opening diameter of the opening 25 and the inner diameter of the cylindrical body 26 are set to values having a slight clearance from the outer diameter on the end portion side of the feed screw 61, and the feed screw 61, that is, the base unit including this It is possible to slide in the vertical direction. In other words, the cover 2 holds the base unit slidably along the ascending / descending direction of the combiner 3.

  A holding plate 23 is provided at a predetermined position of the substrate 20 of the cover 2. On the other hand, an engagement plate 65 a is provided at a predetermined position on the front side of the support column 65. When the base unit is accommodated in the cover 2, the holding plate 23 and the engagement plate 65 a are designed so as to face each other with a predetermined distance therebetween. A compression coil spring 24 as an elastic member is disposed between the holding plate 23 and the engagement plate 65a. Thereby, the compression coil spring 24 is interposed between the cover 2 and the base unit, and the base unit is floated at the reference position in the cover 2 with respect to the vertical direction by using the elastic force provided by itself. Will be supported.

  A stop switch 82 is disposed in the vicinity of the cylindrical body 26 on the lower surface of the cover 2, and the stop switch 82 is located below the base unit. When the base unit is pushed down from the reference position by a predetermined amount, the lower end (washer 66) of the base unit presses the movable piece of the stop switch 82, whereby the stop switch 82 outputs a predetermined detection signal.

  The irradiation device 5 is, for example, a liquid crystal display device, and irradiates the combiner 3 with the display light L1. The irradiation device 5 is disposed at a predetermined position of the instrument panel 200 closer to the driver's seat side than the combiner 3.

  FIG. 5 is an explanatory diagram showing the configuration of the control system of the HUD device 1. The microcomputer 8 has a function of controlling the HUD device 1, and controls the irradiation device 5 to control the irradiation light L <b> 1 output to the combiner 3 or a driving circuit 80 that outputs a driving current to the motor 62. By controlling, the raising / lowering operation | movement of the drive unit 6, ie, the combiner 3, is controlled. As the microcomputer 8, a microcomputer mainly composed of a CPU, a ROM, a RAM, and an I / O interface can be used.

  Signals from the up / down switch 81 and the stop switch 82 are input to the microcomputer 8.

  The raising / lowering switch 81 is an operating means that can be operated by the user, and outputs one signal indicating the ascending and descending of the combiner 3. The microcomputer 8 controls the drive circuit 80 in accordance with the signal input from the elevation switch 81 to rotationally drive the motor 62, thereby performing the ascending operation of the combiner 3 or the descending operation of the combiner 3.

  The stop switch 82 outputs a predetermined detection signal when the base unit is pushed down from the reference position by a predetermined amount. When the detection signal is input from the stop switch 82 during the raising operation of the reflector base 7, the microcomputer 8 controls the drive circuit 80 to stop the rotation drive of the motor 62. Thereby, the microcomputer 8 can stop the raising operation of the combiner 3.

  Hereinafter, in the HUD device 1, the ascending operation of the combiner 3 from the storage position to the deployment position will be described. Here, the state of the combiner 3 shown in FIG. 4 described above corresponds to the state in the storage position. When the microcomputer 8 outputs a control signal corresponding to the ascending operation of the combiner 3 to the drive circuit 80, the drive circuit 80 supplies a drive current to the motor 62. When the motor 62 is rotationally driven according to the drive current, the driving force of the motor 62 is transmitted to the drive gear 63 and the driven gear 64, and the feed screw 61 rotates. As the male screw of the feed screw 61 and the female screw of the female screw part 60 rotate relative to each other, the female screw part 60 moves upward, and accordingly, the reflector base 7 to which the female screw part 60 is connected also rises.

  In the reflector base 7, the gear 19 and the guide pin 17 move while being guided by the guide groove 16 </ b> A while the gear 19 is rolled to the rack 16 </ b> B, thereby being held by the reflector base 7 and this. The combiner 3 ascends while maintaining an upright posture. As the reflector base 7 rises, the gear 19 of the reflector base 7 reaches the upper end of the guide groove 16A, so that the rise of the reflector base 7 is restricted, and the combiner 3 reaches the deployed position (FIG. 6). reference).

  Next, the lowering operation of the combiner 3 from the deployment position to the storage position in the HUD device 1 will be described. When the microcomputer 8 outputs a control signal corresponding to the descending operation of the combiner 3 to the drive circuit 80, the drive circuit 80 supplies a drive current to the motor 62. When the motor 62 is rotationally driven according to the drive current, the driving force of the motor 62 is transmitted to the drive gear 63 and the driven gear 64, and the feed screw 61 rotates. As the male screw of the feed screw 61 and the female screw of the female screw part 60 rotate relative to each other, the female screw part 60 moves downward, and accordingly, the reflector base 7 to which the female screw part 60 is connected also descends.

  In the reflector base 7, the gear 19 and the guide pin 17 move while being guided by the guide groove 16 </ b> A while the gear 19 is rolled to the rack 16 </ b> B, thereby being held by the reflector base 7 and this. The combiner 3 descends while maintaining an upright posture. As the combiner 3 descends, the guide pin 17 of the reflector base 7 reaches the lower end of the guide groove 16A, so that the descender of the reflector base 7 is restricted and the combiner 3 reaches the storage position (see FIG. 4). ).

  In the process of the ascending operation of the combiner 3, if something is sandwiched between the upper edge of the combiner 3 and the windshield glass, a downward force (reaction force) acts on the combiner 3 from the sandwiched object. To do. The base unit that holds the combiner 3 is held by the cover 2 so as to be slidable in the vertical direction, and is supported by the compression coil spring 24 at a reference position in the cover 2. For this reason, when the ascending operation of the combiner 3 continues and the reaction force gradually increases, the reaction force exceeds the elastic force of the compression coil spring 24, and the base unit resists the elastic force of the compression coil spring 24. Pushed down.

  The downward pushing amount increases as long as the motor 62 continues to rotate. When the base unit is pushed down from the reference position by a predetermined amount, the lower end (washer 66) of the base unit is moved to the stop switch 82 as shown in FIG. Press the movable piece. When the movable piece of the stop switch 82 is pressed by the base unit, the stop switch 82 outputs a predetermined detection signal to the microcomputer 8. The microcomputer 8 controls the drive circuit 80 using the detection signal from the stop switch 82 as a trigger, and stops the rotation drive of the motor 62. Thereby, the microcomputer 8 stops the raising operation of the combiner 3.

  In addition, as shown in FIG. 8, when the combiner 3 is lifted, an object is placed on the instrument panel 200, which may press the combiner 3 and prevent the lift operation. In this case, as described above, a downward force (reaction force) from the object acts on the combiner 3. When the ascending operation of the combiner 3 continues and the reaction force gradually increases, when the base unit is pushed down from the reference position by a predetermined amount, the lower end (washer 66) of the base unit is moved to the stop switch as shown in FIG. 82 movable pieces are pressed. When the movable piece of the stop switch 82 is pressed, the stop switch 82 outputs a predetermined detection signal to the microcomputer 8. The microcomputer 8 controls the drive circuit 80 using the detection signal from the stop switch 82 as a trigger to stop the rotational drive of the motor 62. Thereby, the microcomputer 8 stops the raising operation of the combiner 3.

  As described above, in the present embodiment, the compression coil spring 24 is interposed between the cover 2 and the base unit, and the compression coil spring 24 allows the reference position in the cover 2 in the up and down direction (the up and down direction of the combiner 3). The base unit is supported. The cover 2 is provided with a stop switch 82 that detects that the base unit has been pushed down from the reference position by a predetermined amount. Further, when the microcomputer 8 determines through the stop switch 82 that the base unit has been pushed down from the reference position by a predetermined amount during the raising operation of the combiner 3, the microcomputer 8 stops the raising operation of the combiner 3.

  According to such a configuration, when the combiner 3 interferes with an object on the instrument panel 200 or an object is sandwiched between the windshield glass, the base unit is pushed down from the reference position by a predetermined amount. . Since such a pushed-down state can be detected by the stop switch 82, it is possible to determine whether the combiner 3 interferes with an object on the instrument panel 200 or an object is sandwiched between the windshield glass. it can. Moreover, when such a state is judged, the raise operation | movement of the combiner 3 can be stopped. Thereby, interference with a combiner 3 and pinching can be suppressed. In addition, the device can be protected.

  Moreover, in this embodiment, the compression coil spring 24 is supporting the base unit in the state which floated above the stop switch 82 using the elastic force with which it is provided.

  According to this configuration, the stop switch 82 can reliably detect that the base unit has been pushed down.

  In addition, the detection sensitivity for stopping the raising operation of the combiner 3 can be controlled by setting the elastic force of the compression coil spring 24. That is, the compression coil spring 24 is set with an elastic force in consideration of a reaction force acting on the combiner 3. Thereby, the weight of the object whose interference should be detected and the force applied to the sandwiched object can be arbitrarily set.

  In the above-described embodiment, the raising operation is stopped when it is determined through the stop switch 82 that the base unit has been pushed down from the reference position by a predetermined amount during the raising operation of the combiner 3. However, the microcomputer 8 may reversely drive the motor 62 to lower the combiner 3. That is, in this specification, such a lowering operation is also included in the process of stopping the ascending operation in a broad sense.

  The member that supports the base unit at the reference position is not limited to the compression coil spring, and may be a leaf spring, an air suspension, rubber, or the like. Further, when the base unit is supported from below under the stop switch 82, it may be a compression coil spring, but it may be supported from above, and in this case, a tension coil spring can be used. That is, as long as the base unit is supported at a reference position in the cover in the ascending / descending direction of the reflector in a state where it can be pushed down, it can be widely used as an elastic member.

  The vehicle display device according to this embodiment has been described above, but the present invention is not limited to this embodiment, and various modifications can be made within the scope of the invention.

DESCRIPTION OF SYMBOLS 1 HUD apparatus 3 Combiner 31 Through-hole 4 Lifting apparatus 2 Cover 2a Opening 21 Side wall part 22 Side wall part 24 Compression coil spring 25 Opening 26 Cylindrical body 6 Drive unit 60 Female screw part 61 Feed screw 62 Motor 63 Drive gear 64 Driven gear 65 Post 65a Engaging plate 7 Reflecting plate base 71 Column portion 72 Screw 10 Guide member 16 Guide rack 16A Guide groove 16B Rack 17 Guide pin 18 Rotating shaft 19 Gear 8 Microcomputer 81 Lift switch 82 Stop switch 5 Irradiation device

Claims (3)

A reflector,
A reflector base for holding the reflector;
A drive unit connected to the reflector base and performing an ascending operation of the reflector or a descending operation of the reflector;
A cover that houses the base unit including the reflector base and the drive unit, and holds the base unit slidably along the ascending / descending direction of the reflector;
An elastic member interposed between the cover and the base unit, for supporting the front SL base unit,
Detecting means provided on the cover for detecting that the base unit is pushed down a predetermined amount from a reference position supported by the elastic member ;
Control means for controlling the drive unit,
The control means stops the raising operation of the reflecting plate when it is judged through the detecting means that the base unit is pushed down from the reference position by a predetermined amount during the raising operation of the reflecting plate. A vehicle display device.   The vehicular display device according to claim 1, wherein the elastic member supports the base unit in a state of floating above the detection unit by using an elastic force provided by the elastic member.   The vehicular display device according to claim 2, wherein the elastic member is set with the elastic force in consideration of a reaction force acting on the reflecting plate.

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