WO2017051739A1 - Dispositif d'affichage tête haute - Google Patents

Dispositif d'affichage tête haute Download PDF

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Publication number
WO2017051739A1
WO2017051739A1 PCT/JP2016/076787 JP2016076787W WO2017051739A1 WO 2017051739 A1 WO2017051739 A1 WO 2017051739A1 JP 2016076787 W JP2016076787 W JP 2016076787W WO 2017051739 A1 WO2017051739 A1 WO 2017051739A1
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WIPO (PCT)
Prior art keywords
temperature
predicted
display
rotational position
correction
Prior art date
Application number
PCT/JP2016/076787
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English (en)
Japanese (ja)
Inventor
佐々木　達也
Original Assignee
株式会社デンソー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2016033523A external-priority patent/JP6372502B2/ja
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Priority to EP16848527.4A priority Critical patent/EP3355095B1/fr
Priority to US15/761,897 priority patent/US10429642B2/en
Priority to KR1020187007978A priority patent/KR101997414B1/ko
Publication of WO2017051739A1 publication Critical patent/WO2017051739A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays

Definitions

  • the present disclosure relates to a head-up display (hereinafter referred to as HUD) device mounted on a vehicle.
  • HUD head-up display
  • HUD devices that realize a virtual image display of a display light image by projecting a display light image representing vehicle-related information related to the vehicle from a projector and reflecting it by a reflecting mirror are widely known.
  • the reflecting mirror is used in this way, the occupied space of the HUD device in the vehicle becomes as small as possible.
  • Patent Document 1 discloses an apparatus that adjusts the virtual image display position of a display light image by driving the reflecting mirror by decelerating the rotation of the stepping motor by a reduction gear mechanism and transmitting the reduced speed to the reflecting mirror. It is disclosed.
  • the rotation position of the stepping motor is controlled in accordance with an adjustment instruction from the vehicle occupant, so that the virtual image display position of the display light image can be appropriately adjusted to the occupant's expected position.
  • the elastic member generates a restoring force in a direction in which the transmission gears mesh with each other in the reduction gear mechanism, so that the backlash between the transmission gears disappears. As a result, a shift due to backlash between the transmission gears is less likely to occur at the virtual image display position of the display light image.
  • the present disclosure has been made in view of the problems described above, and an object thereof is to provide a HUD device that suppresses a shift of a virtual image display position of a display light image in a vehicle.
  • a first aspect of the present disclosure is a head-up display device mounted on a vehicle, and a projector that projects a display light image representing vehicle-related information related to the vehicle;
  • An optical unit that has a reflecting mirror that reflects the display light image projected from the projector so that it can be driven, and that adjusts the virtual image display position for displaying the display light image reflected by the reflecting mirror as a virtual image by driving the reflecting mirror.
  • a control unit that controls the rotational position of the stepping motor in accordance with an adjustment command from the vehicle occupant and an elastic member that generates At least one transmission gear is defined as a specific gear
  • the predicted temperature of creep deformation is defined as the predicted gear temperature as the environmental temperature of the specific gear, and predicted to occur at the virtual image display position due to creep deformation at the predicted deformation temperature.
  • At least one transmission gear whose creep deformation is predicted in the reduction gear mechanism is used as a specific gear, and correction using the ambient temperature of the specific gear as a trigger is given to the rotational position of the stepping motor.
  • the rotational position of the stepping motor is corrected to return the predicted display deviation related to the virtual image display position of the display light image.
  • the predicted display deviation is a deviation that is predicted to occur at the virtual image display position of the display light image due to creep deformation at or above the predicted deformation temperature. Therefore, even if the specific gear creep-deforms at an environmental temperature higher than the predicted deformation temperature, the virtual position of the display light image is prevented from shifting in the vehicle by correcting the rotational position to return the predicted display deviation. It becomes possible.
  • the control unit when the environmental temperature rises above the predicted deformation temperature, the control unit corrects the rotational position with a correction amount that changes the rotational position to return the predicted display deviation.
  • An execution block and a post-correction control block that controls the rotational position in accordance with the adjustment command based on the position corrected by the correction execution block.
  • the rotational position of the stepping motor when the environmental temperature rises above the predicted deformation temperature, the rotational position of the stepping motor is changed to the side that returns the predicted display deviation by executing the rotational position correction by the correction amount. To do. Therefore, after the change, the rotational position of the stepping motor is controlled according to the adjustment command with the corrected position as a reference. As a result, once the rotational position correction is executed at an environmental temperature that is equal to or higher than the predicted deformation temperature, the virtual image display position of the display light image can be controlled while the deviation due to creep deformation of the specific gear is reduced. It becomes.
  • the drawing It is a schematic structure figure showing the HUD device by a first embodiment. It is a schematic diagram which shows the virtual image display state of the display light image by the HUD apparatus of FIG. It is sectional drawing which shows the stepping motor and reduction gear mechanism of FIG. It is an electric circuit diagram which shows the electrical connection state of the stepping motor of FIG. 1, and a control unit. It is a characteristic view for demonstrating the drive signal applied to the stepping motor of FIG.
  • FIG. 6A is a schematic diagram for explaining creep deformation occurring in the transmission gear of FIG. 1
  • FIG. 6B is a schematic diagram for explaining creep deformation occurring in the transmission gear of FIG.
  • FIG. 8A is a schematic diagram for explaining a correction occurring at the virtual image display position shown in FIG. 2, and FIG. FIG. 2 is a block diagram showing a plurality of blocks constructed by the display control circuit of FIG. 1.
  • the HUD device 1 is mounted on a vehicle and displays a display light image 3 in a virtual image in the vehicle.
  • the HUD device 1 includes a housing 10, a projector 20, an optical unit 30, a stepping motor 40, a reduction gear mechanism 50, an elastic member 60, a temperature sensor 70, an adjustment switch 80, and a control unit 90.
  • the housing 10 is formed in a hollow shape and is installed on the instrument panel 2 in the vehicle.
  • the housing 10 accommodates the components 20, 30, 40, 50, 60, 70, etc. of the device 1 in front of the driver's seat of the vehicle.
  • the housing 10 has a translucent exit window 14 at a position facing the windshield 4 as a projection member in front of the driver's seat of the vehicle in the vertical direction.
  • the projector 20 is composed mainly of a transmission illumination type liquid crystal panel or an organic EL panel, and has a screen 22.
  • the screen 22 is illuminated by a backlight built in the projector 20.
  • the image displayed on the screen 22 as a real image is projected as the display light image 3 by receiving the transmitted illumination and emitting light.
  • the display light image 3 projected from the projector 20 represents vehicle related information related to the vehicle.
  • the display light image 3 of the present embodiment represents navigation information such as the vehicle traveling direction, as shown in FIG.
  • the display light image 3 may represent vehicle state information such as a vehicle speed, a remaining fuel amount, and a coolant temperature, and outside vehicle state information such as traffic conditions.
  • the optical unit 30 includes a plurality of optical members including a reflecting mirror 32.
  • the reflecting mirror 32 is a so-called concave mirror having a reflecting surface 34 that is recessed into a smooth curved surface.
  • the reflecting mirror 32 magnifies and reflects the display light image 3 incident directly or indirectly from the projector 20 to the reflecting surface 34 toward the exit window 14.
  • the reflected display light image 3 passes through the exit window 14 and is projected onto the windshield 4, thereby forming an image in front of the windshield 4 as shown in FIG. 2.
  • the vehicle related information represented by the display light image 3 is displayed as a virtual image toward the driver seat side in the vehicle.
  • the reflecting mirror 32 has a rotating shaft 38.
  • the rotation shaft 38 is rotatably supported by the base 16 fixed to the housing 10.
  • the virtual image display position of the display light image 3 changes up and down with respect to the windshield 4, as shown in FIG.
  • the virtual image display position of the display light image 3 can be adjusted.
  • the stepping motor 40 is a permanent magnet type having a claw pole structure.
  • the stepping motor 40 has a magnetic casing 46, a rotor 41, and stators 44 and 45.
  • the magnetic casing 46 is formed in a hollow shape by a magnetic material.
  • the rotor 41 is formed by assembling a rotor magnet 43 around the outer periphery of the motor shaft 42.
  • the motor shaft 42 is rotatably supported by a magnetic casing 46.
  • the rotor magnet 43 is formed with a plurality of N and S magnetic poles alternately in the rotation direction.
  • the two-phase stators 44 and 45 are held by a magnetic casing 46 on the outer peripheral side of the rotor 41.
  • the A-phase stator 44 includes magnetic yokes 441 and 442 and a coil 443.
  • the B-phase stator 45 includes magnetic yokes 451 and 452 and a coil 453.
  • the coils 443 and 453 of the respective phases A and B are energized and energized by the drive signal, so that the rotor magnet 43 rotates together with the motor shaft 42.
  • a drive signal is applied to the A-phase coil 443 in accordance with a cosine function that alternates the amplitude according to the electrical angle, as shown by a thick solid line graph in FIG.
  • a drive signal is applied to the B-phase coil 453 according to a sine function that alternates the amplitude according to the electrical angle, as shown by a thin solid line graph in FIG. Therefore, the rotational position of the motor shaft 42 is a position corresponding to the electrical angle of the drive signal applied to the coils 443 and 453 of the A and B phases.
  • the reduction gear mechanism 50 shares the magnetic casing 46 with the stepping motor 40.
  • the reduction gear mechanism 50 has a plurality of transmission gears 52, 53, 54, 55, 56, 57, 58, 59 inside the magnetic casing 46.
  • these transmission gears 52, 53, 54, 55, 56, 57, 58 and 59 the whole including the tooth profile portions 52a, 53a, 54a, 55a, 56a, 57a, 58a and 59a is resin-molded.
  • Such transmission gears 52, 53, 54, 55, 56, 57, 58, 59 are caused by residual stress during resin molding, as schematically shown by white arrows in FIG. 6 (a). Creep deformation is likely to occur. Therefore, in the present embodiment, any of the transmission gears 52, 53, 54, 55, 56, 57, 58, and 59 is defined as a “specific gear” in which creep deformation is predicted.
  • the first-stage transmission gear 52 is formed on the motor shaft.
  • the first idler transmission gear 53 and the first pinion transmission gear 54 are integrally formed and are rotatably supported by the magnetic casing 46.
  • the tooth profile 53a of the first idler transmission gear 53 is connected to the tooth profile 52a of the first stage transmission gear 52 by meshing.
  • the second idler transmission gear 55 and the second pinion transmission gear 56 are integrally formed and are rotatably supported by the magnetic casing 46.
  • the tooth profile 55a of the second idler transmission gear 55 is connected to the tooth profile 54a of the first pinion transmission gear 54 by meshing.
  • the third idler transmission gear 57 and the third pinion transmission gear 58 are integrally formed and are rotatably supported by the magnetic casing 46.
  • the tooth profile portion 57a of the third idler transmission gear 57 is connected to the tooth profile portion 58a of the second pinion transmission gear 56 by meshing.
  • the final stage transmission gear 59 is formed on the rotary shaft 38.
  • the tooth profile 59a of the final stage transmission gear 59 is connected to the tooth profile 58a of the third pinion transmission gear 58 by meshing.
  • the rotation of the motor shaft 42 is decelerated and transmitted to the rotation shaft 38.
  • the rotation shaft 38 is driven so that the virtual image display position of the display light image 3 shown in FIG. 2 changes toward the upper limit display position Du.
  • the rotating shaft 38 is driven so that the virtual image display position of the display light image 3 shown in FIG. 2 changes toward the lower lower limit display position Dl.
  • the elastic member 60 is a so-called tension coil spring made of metal.
  • One end of the elastic member 60 is locked by the reflecting mirror 32.
  • the other end of the elastic member 60 is locked by the base 16.
  • the elastic member 60 With such a locking form, the elastic member 60 generates a restoring force so as to urge the rotating shaft 38 to one side in the rotational direction.
  • This restoring force meshes the tooth profile portions 52a, 53a, 54a, 55a, 56a, 57a, 58a, 59a that form the connecting portions of the transmission gears 52, 53, 54, 55, 56, 57, 58, 59. This is the force that is generated in the direction of eliminating the backlash.
  • the creep deformation as shown in FIG. 6 (a) occurs so that the teeth of the tooth profile portions 52a, 53a, 54a, 55a, 56a, 57a, 58a, and 59a are bent to the opposite sides at the respective connecting portions. . Therefore, the transmission gears 59, 57, 55, 53 on the rear stage side receive the restoring force of the elastic member 60 and rotate as schematically shown by the dot-hatched arrows in FIG. Then, fill the backlash as much as possible by bending the teeth. As a result, the virtual image display position of the display light image 3 is shifted upward as schematically shown by a white arrow in FIG.
  • Such creep deformation that causes a shift in the virtual image display position is particularly short as the environmental temperature T (see FIG. 8) of the transmission gears 52, 53, 54, 55, 56, 57, 58, 59 increases. It happens greatly. Therefore, the displacement of the virtual image display position also occurs greatly in a short time as the environmental temperature T increases.
  • the environmental temperature T at which large creep deformation is predicted is defined as the predicted deformation temperature Te (see FIG. 8).
  • the predicted deformation temperature Te is set to a predetermined value such as a temperature T, for example, 85 ° C.
  • the deviation of the virtual image display position predicted to occur due to the creep deformation at the predicted deformation temperature Te is defined as a predicted display deviation ⁇ De as shown in FIG.
  • Such predicted deformation temperature Te and predicted display deviation ⁇ De may be measured from experimental results using a plurality of sets of transmission gears 52, 53, 54, 55, 56, 57, 58, 59, or estimated by simulation. May be.
  • the temperature sensor 70 is housed inside the magnetic casing 46 together with the transmission gears 52, 53, 54, 55, 56, 57, 58 and 59. Thereby, the temperature sensor 70 is installed in the instrument panel 2 in the vehicle.
  • the temperature sensor 70 is mainly composed of a thermistor having a relatively large electric resistance change with respect to a temperature change.
  • the temperature sensor 70 detects an environmental temperature T common to the transmission gears 52, 53, 54, 55, 56, 57, 58 and 59 inside the magnetic casing 46.
  • the temperature sensor 70 outputs a temperature signal representing the detected environmental temperature T.
  • the adjustment switch 80 is installed in the vicinity of the driver's seat of the vehicle so that it can be operated by a passenger.
  • the adjustment switch 80 has operation members 82 and 83 such as a lever type or a push type.
  • the up operation member 82 is operated by an occupant who wants to change the virtual image display position of the display light image 3 upward. In response to this operation, the adjustment switch 80 outputs a command signal for giving an up adjustment command.
  • the down operation member 83 is operated by an occupant who wants to change the virtual image display position of the display light image 3 downward. In response to this operation, the adjustment switch 80 outputs a command signal for giving a down adjustment command.
  • the control unit 90 is installed outside or inside the housing 10.
  • the control unit 90 is formed by combining a display control circuit 92 and a switching circuit 93.
  • the display control circuit 92 is mainly composed of a microcomputer having a processor 92a and a memory 92b.
  • the display control circuit 92 is electrically connected to the projector 20, the temperature sensor 70, and the adjustment switch 80.
  • the switching circuit 93 includes a plurality of transistors as switching elements 94.
  • the collector of each switching element 94 is electrically connected to one of the coils 443 and 453.
  • the emitter and base of each switching element 94 are electrically connected to the vehicle ground terminal and the display control circuit 92, respectively.
  • Each switching element 94 changes the drive signal applied to the coils 443 and 453 of the A and B phases in accordance with the base signal input from the display control circuit 92.
  • the rotational position of the motor shaft 42 changes according to the electrical angle of the drive signal applied to the coils 443 and 453 of the A and B phases. Therefore, hereinafter, controlling the base signal to each switching element 94 will be described as controlling the rotational position of the motor shaft 42.
  • the display control circuit 92 controls display of an image by the projector 20. At the same time, the display control circuit 92 controls the rotational position of the motor shaft 42 in accordance with the temperature signal input from the temperature sensor 70 and the command signal input from the adjustment switch 80.
  • the display control circuit 92 changes the rotational position of the motor shaft 42 to the positive rotation side in accordance with the up adjustment command by the operation of the up operation member 82. Thereby, the virtual image display position of the display light image 3 changes upward according to the up adjustment command.
  • the display control circuit 92 changes the rotation position of the motor shaft 42 to the reverse rotation side in accordance with the down adjustment command by the operation of the down operation member 83. Thereby, the virtual image display position of the display light image 3 changes downward according to the down adjustment command.
  • the up adjustment command and the down adjustment command are collectively referred to as an adjustment command.
  • the display control circuit 92 controls the rotational position of the motor shaft 42 according to the environmental temperature T detected by the temperature sensor 70. Therefore, in the following, the rotational position control according to the environmental temperature T will be described in detail.
  • the display control circuit 92 executes a plurality of blocks 921 and 922 shown in FIG. 9 by executing the control program stored in the memory 92b by the processor 92a in order to realize the rotational position control according to the environmental temperature T. To build.
  • the correction execution block 921 corrects the rotational position of the motor shaft 42 by a predetermined correction amount ⁇ C (see FIG. 8B).
  • the rotational position correction by the correction amount ⁇ C is executed. .
  • the correction amount ⁇ C is changed to the predicted display deviation ⁇ De above the predicted deformation temperature Te by changing the virtual image display position of the display light image 3 downward as schematically indicated by the dot hatching arrow in FIG. Is set on the reverse rotation side of the motor shaft. Therefore, here, as the electrical angle change amount of the drive signal applied to the coils 443 and 453 of the respective phases A and B, a change amount that reversely rotates the motor shaft 42 in order to return the predicted display deviation ⁇ De to before the deviation, for example, 2
  • the correction amount ⁇ C is set to a predetermined value such as 360 degrees for the step.
  • the correction amount ⁇ C is preset and stored in the memory 92b to a value that changes the rotational position of the motor shaft 42 to the reverse rotation side so as to return the predicted display deviation ⁇ De measured or estimated as described above. Yes. Accordingly, the correction execution block 921 reads the correction amount ⁇ C stored in the memory 92b, thereby executing rotational position correction using the correction amount ⁇ C. As a result, the electrical angle of the drive signal applied to the coils 443 and 453 of the A and B phases changes by the correction amount ⁇ C. Therefore, the rotational position of the motor shaft 42 is corrected to the reverse rotation side for returning the predicted display deviation ⁇ De.
  • the creep deformation of the transmission gears 52, 53, 54, 55, 56, 57, 58, 59 can be assumed to be substantially non-occurring after the rotational position correction by the correction execution block 921.
  • the post-correction control block 922 follows the rotational position of the motor shaft 42 from the current position corrected by the correction amount ⁇ C according to the initial adjustment command. Control to position. Further, when an adjustment command for the second time or later is given after the rotational position correction, the post-correction control block 922 determines the rotational position of the motor shaft 42 from the current position controlled through the position corrected by the correction amount ⁇ C. Is controlled to a position according to the second and subsequent adjustment commands. With the above control, once the rotational position of the motor shaft 42 is corrected according to the increase of the environmental temperature T to the predicted deformation temperature Te or higher, the rotational position is controlled based on the corrected position.
  • the display control circuit 92 realizes the display control flow shown in FIG. 10 by the construction of the plural blocks 921 and 922, and the details will be described below.
  • the display control flow starts in response to an on operation of a power switch in the vehicle and ends in response to an off operation of the switch. Further, during the display control flow, the virtual image display of the display light image 3 is continued by the projection of the display light image 3 from the projector 20. Further, “S” in the display control flow means each step.
  • a temperature signal representing the environmental temperature T detected by the temperature sensor 70 is acquired.
  • S103 whether or not the environmental temperature T detected by the temperature sensor 70 is equal to or higher than the predicted deformation temperature Te is determined based on the temperature signal acquired in the immediately preceding S102. As a result, when a positive determination is made, the process proceeds to S104.
  • the process proceeds to S106. Moreover, also when negative determination is made in S103, it transfers to S106. Furthermore, also when an affirmation determination is made in S101, it transfers to S106.
  • S106 even when shifting from any of S101, 103, and S105, in S106, whether or not an adjustment command is given by the occupant is determined based on the presence or absence of a command signal from the adjustment switch 80. As a result, if a negative determination is made, the process returns to S101. On the other hand, if a positive determination is made, the process proceeds to S107.
  • the transmission gears 52, 53, 54, 55, 56, 57, 58 and 59 whose creep deformation is predicted in the reduction gear mechanism 50 are set as “specific gears”, and the ambient temperature T of these gears is triggered. Is applied to the rotational position of the stepping motor 40. Specifically, when the environmental temperature T rises above the predicted deformation temperature Te that is predicted to undergo creep deformation, the rotational position of the stepping motor 40 is shifted to the side that returns the predicted display deviation ⁇ De related to the virtual image display position of the display light image 3. It is corrected.
  • the predicted display deviation ⁇ De is a deviation that is predicted to occur at the virtual image display position of the display light image 3 due to creep deformation at the predicted deformation temperature Te.
  • the rotational position of the stepping motor 40 is changed to return the predicted display deviation ⁇ De by executing the rotational position correction by the correction amount ⁇ C. . Therefore, after such a change, the rotational position of the stepping motor 40 is controlled in accordance with the adjustment command with the corrected position as a reference.
  • the virtual image display position of the display light image 3 is transmitted to the transmission gears 52, 53, 54, 55, 56, 57, 58, It is possible to control while maintaining a state in which the shift due to the creep deformation of 59 is reduced.
  • the environmental temperature T of the transmission gears 52, 53, 54, 55, 56, 57, 58, 59 is likely to be higher than the predicted deformation temperature Te due to traveling of the vehicle on which the HUD device 1 is mounted. Therefore, in the HUD device 1, when the environmental temperature T rises above the predicted deformation temperature Te for the first time after being mounted on the vehicle, rotational position correction is executed. According to this, the rotational position correction can be executed in a timely manner by reliably grasping the situation in which the creep deformation of the transmission gears 52, 53, 54, 55, 56, 57, 58, 59 is predicted. Therefore, it is possible to ensure reliability with respect to the effect of suppressing the shift of the virtual image display position of the display light image 3.
  • the temperature sensor 70 is housed together with the transmission gears 52, 53, 54, 55, 56, 57, 58, 59 inside the magnetic casing 46 in the reduction gear mechanism 50.
  • Such a temperature sensor 70 can detect the environmental temperature T of the transmission gears 52, 53, 54, 55, 56, 57, 58, 59 with high accuracy as close as possible to these gears. According to this, it is possible to accurately grasp that the environmental temperature T has risen above the predicted deformation temperature Te, and to perform rotational position correction in a timely manner. Therefore, it is possible to suppress a situation in which the virtual image display position of the display light image 3 is shifted due to the rotation position correction, although the predicted display deviation ⁇ De requiring the rotation position correction has not occurred. .
  • the transmission gears 52, 53, 54, 55, 56, 57, 58, 59 including the tooth profile portions 52 a, 53 a, 54 a, 55 a, 56 a, 57 a, 58 a, 59 a formed entirely of resin are predicted Creep deformation at the deformation temperature Te or higher is likely to occur.
  • the transmission gears 52, 53, 54, 55, 56, 57, 58, 59 are creep-deformed at the environmental temperature T equal to or higher than the predicted deformation temperature Te. According to this, it is possible to suppress the shift of the virtual image display position of the display light image 3.
  • the second embodiment is a modification of the first embodiment. As shown in FIG. 11, in the second embodiment, S2100 is added to the display control flow.
  • the process proceeds to S2100 when a negative determination is made in S101.
  • S2100 it is determined whether the set time has elapsed since the vehicle stopped.
  • the set time is set to a time necessary for saturation of the environmental temperature T detected by the temperature sensor 70 in the vehicle due to the stop of the vehicle such as an air conditioner. If a negative determination is made in S2100, the process proceeds to S106. On the other hand, if a positive determination is made in S2100, the process proceeds to S102.
  • the rotational position correction is executed.
  • the creep deformation of the transmission gears 52, 53, 54, 55, 56, 57, 58, 59 is predicted based on the knowledge that there is a high possibility that the environmental temperature T will rise after the vehicle stops running.
  • the rotation position correction can be executed in a timely manner. Therefore, it is possible to ensure reliability with respect to the effect of suppressing the shift of the virtual image display position of the display light image 3.
  • the third embodiment is a modification of the second embodiment. As shown in FIG. 12, in the third embodiment, S3104a and S3104b are executed in place of S104 in the display control flow.
  • the process proceeds to S3104a when an affirmative determination is made in S103.
  • the temperature sensor 70 determines which one of the temperature ranges ⁇ T1, ⁇ T2, and ⁇ T3 the environmental temperature T detected by the temperature sensor 70 is equal to or higher than the predicted deformation temperature Te based on the most recent temperature signal acquired in S102.
  • three temperature ranges ⁇ T1, ⁇ T2, and ⁇ T3 are set. These temperature ranges ⁇ T1, ⁇ T2, and ⁇ T3 have a significant difference in the predicted display deviation ⁇ De perceived by the occupant based on the temperature correlation It between the environmental temperature T equal to or higher than the predicted deformation temperature Te and the predicted display deviation ⁇ De as shown in FIG. It is set on the boundary of the predicted temperature.
  • the temperature ranges ⁇ T1, ⁇ T2, and ⁇ T3 are set based on the temperature correlation It in which the predicted display deviation ⁇ De increases as the environmental temperature T increases.
  • the process proceeds to S3104b after the temperature ranges ⁇ T1, ⁇ T2, and ⁇ T3 are determined in S3104a.
  • S3104b as a function of the correction execution block 921, the rotational position of the motor shaft 42 is corrected by one of the multiple values ⁇ C1, ⁇ C2, and ⁇ C3 that are variable correction amounts ⁇ C stored in the memory 92b.
  • three correction amounts ⁇ C1, ⁇ C2, and ⁇ C3 are set corresponding to the three temperature ranges ⁇ T1, ⁇ T2, and ⁇ T3.
  • correction amounts ⁇ C1, ⁇ C2, and ⁇ C3 are different for the corresponding temperature ranges ⁇ T1, ⁇ T2, and ⁇ T3, respectively, based on the temperature correlation It between the environmental temperature T that is equal to or higher than the predicted deformation temperature Te and the predicted display deviation ⁇ De as shown in FIG. Set to value.
  • correction amounts ⁇ C1, ⁇ C2, and ⁇ C3 that increase in value are set in descending order of the corresponding temperature ranges ⁇ T1, ⁇ T2, and ⁇ T3.
  • values corresponding to any one of the temperature ranges ⁇ T1, ⁇ T2, and ⁇ T3 determined in the immediately preceding S3104a are selected from the correction amounts ⁇ C1, ⁇ C2, and ⁇ C3, and the rotational position correction is performed using the selected values.
  • the process proceeds to S105.
  • the rotational position correction is executed by the variable correction amounts ⁇ C1, ⁇ C2, and ⁇ C3 based on the temperature correlation It between the environmental temperature T equal to or higher than the predicted deformation temperature Te and the predicted display deviation ⁇ De.
  • appropriate correction amounts ⁇ C1, ⁇ C2, and ⁇ C3 that take into account even the predicted display deviation ⁇ De varies according to the environmental temperature T can be selected and used for rotational position correction. Therefore, it is possible to ensure reliability with respect to the effect of suppressing the shift of the virtual image display position of the display light image 3.
  • the rotational position correction is executed with a value corresponding to the range to be performed.
  • appropriate correction amounts ⁇ C1, ⁇ C2, and ⁇ C3 are selected for each of the temperature ranges ⁇ T1, ⁇ T2, and ⁇ T3 where a significant difference is expected to occur in the predicted display deviation ⁇ De that the occupant feels, and rotational position correction is performed.
  • the environmental temperature T detected by the temperature sensor 70 is equal to or higher than the predicted deformation temperature Te for the first time after manufacture or factory shipment before the HUD device 1 is mounted on the vehicle.
  • the rotational position correction may be executed by the correction execution block 921.
  • at least a part of the plurality of blocks 921 and 922 may be constructed by hardware using one or a plurality of ICs.
  • a zero position serving as a reference in controlling the rotational position of the motor shaft 42 may be set.
  • the current position and the zero position are corrected with the fixed correction amount ⁇ C or the variable correction amounts ⁇ C1, ⁇ C2, and ⁇ C3 as the rotational position of the motor shaft 42, and then adjusted based on the corrected zero position.
  • Control according to the command may be executed.
  • the environmental temperature T is equal to or higher than the predicted deformation temperature Te for the gears except at least one of the transmission gears 52, 53, 54, 55, 56, 57, 58, 59. Even if it becomes, you may form with the material which does not produce creep deformation easily.
  • at least one transmission gear to be formed of resin as in the above embodiment is defined as a “specific gear”.
  • the tooth profile 52a at least one of the transmission gears 52, 53, 54, 55, 56, 57, 58, 59 is defined as “specific gear”.
  • 53a, 54a, 55a, 56a, 57a, 58a, 59a alone or a part including the tooth profile portions 52a, 53a, 54a, 55a, 56a, 57a, 58a, 59a may be formed of resin.
  • the occupant feels uncomfortable with at least one of the transmission gears 52, 53, 54, 55, 56, 57, 58, 59 defined as “specific gear”.
  • the transmission gears 52, 53, 54, 55, 56, 57, 58, 59 defined as “specific gear”.
  • it may be formed of a material other than resin.
  • any of the shafts of the transmission gears 53, 54, 55, 56, 57, and 58, or the motor shaft 42 may be urged by the elastic member 60.
  • thermometers such as a thermocouple type or an infrared type may be adopted as the temperature sensor 70.
  • the temperature sensor 70 may be installed outside the magnetic casing 46 in the housing 10.
  • the temperature sensor 70 may be installed outside the housing 10.
  • a temperature mounted on the vehicle separately from the HUD device 1 such as a room temperature sensor of an air conditioner.
  • the ambient temperature T may be detected by a sensor.
  • a laser scanner that projects laser light to be the display light image 3 by a micro electro mechanical system, or visible light or laser light to be the display light image 3 is projected by a digital mirror device.
  • a video display system or the like may be employed as the projector 20.
  • the display light image 3 may be projected toward a combiner or the like installed exclusively in the HUD device 1 in the vehicle.
  • the display control flow is changed so as to execute the correction of the rotational position when the environmental temperature T in the vehicle rises above the predicted deformation temperature Te while the vehicle is running. May be.
  • it is determined whether or not the vehicle is in a traveling state in S2100, and if an affirmative determination is made, the process proceeds to S102.
  • the temperature range and the correction amount may be set other than the above-described three sets, that is, two sets or four or more sets.
  • the process may be shifted to S102.
  • the correction amount corresponding to the value T0 as the environmental temperature T is 1: 1 based on the temperature correlation It where the predicted display deviation ⁇ De increases as the environmental temperature T increases.
  • a value ⁇ C0 that is ⁇ C may be used for rotational position correction.
  • the rotational position correction is executed with the correction amount ⁇ C0 corresponding to the environmental temperature T0 based on the acquisition signal at S102 in S3104b without executing S3104a.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Instrument Panels (AREA)

Abstract

L'invention concerne un dispositif d'affichage tête haute (1) comprenant : un projecteur (20); une unité optique (30) comportant un miroir de réflexion pouvant être entraîné (32) et réglant une position d'affichage d'image virtuelle par entraînement du miroir de réflexion; un moteur pas-à-pas (40) servant à entraîner le miroir de réflexion; un mécanisme de décélération (50) à engrenages comportant une pluralité d'engrenages rotatifs de transmission (52 - 59); un élément élastique (60) servant à générer une force de rappel dans une direction qui amène les engrenages de transmission à venir en prise les uns avec les autres; et une unité de commande (90) servant à commander la position de rotation d'un moteur conformément à une instruction de réglage d'un occupant de véhicule. L'unité de commande corrige la position de rotation vers une direction qui corrige une déviation d'affichage estimée lorsque la température ambiante s'élève à un niveau supérieur ou égal à une température de déformation estimée, au moins un engrenage de transmission vraisemblablement soumis à une déformation par fluage étant défini comme engrenage désigné, une température à laquelle est estimée démarrer la déformation par fluage étant définie comme température de déformation estimée (Te) et étant considérée comme température ambiante (T) de l'engrenage désigné, et une déviation estimée se produire au niveau d'une position d'affichage d'image virtuelle du fait de la déformation par fluage à la température de déformation estimée étant définie comme déviation d'affichage estimée (δDe).
PCT/JP2016/076787 2015-09-25 2016-09-12 Dispositif d'affichage tête haute WO2017051739A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP16848527.4A EP3355095B1 (fr) 2015-09-25 2016-09-12 Dispositif d'affichage tête haute
US15/761,897 US10429642B2 (en) 2015-09-25 2016-09-12 Head-up display device
KR1020187007978A KR101997414B1 (ko) 2015-09-25 2016-09-12 헤드업 디스플레이 장치

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2015-188752 2015-09-25
JP2015188752 2015-09-25
JP2016033523A JP6372502B2 (ja) 2015-09-25 2016-02-24 ヘッドアップディスプレイ装置
JP2016-033523 2016-02-24

Publications (1)

Publication Number Publication Date
WO2017051739A1 true WO2017051739A1 (fr) 2017-03-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108256179A (zh) * 2017-12-29 2018-07-06 沈阳工业大学 一种预测材料蠕变曲线的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0796771A (ja) * 1993-09-27 1995-04-11 Nippondenso Co Ltd ヘッドアップディスプレイの表示位置調整装置
JP2011131651A (ja) * 2009-12-22 2011-07-07 Denso Corp ヘッドアップディスプレイ装置
WO2011132407A1 (fr) * 2010-04-20 2011-10-27 パナソニック株式会社 Dispositif d'affichage d'image
JP2014203012A (ja) * 2013-04-09 2014-10-27 日本精機株式会社 ヘッドアップディスプレイ装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0796771A (ja) * 1993-09-27 1995-04-11 Nippondenso Co Ltd ヘッドアップディスプレイの表示位置調整装置
JP2011131651A (ja) * 2009-12-22 2011-07-07 Denso Corp ヘッドアップディスプレイ装置
WO2011132407A1 (fr) * 2010-04-20 2011-10-27 パナソニック株式会社 Dispositif d'affichage d'image
JP2014203012A (ja) * 2013-04-09 2014-10-27 日本精機株式会社 ヘッドアップディスプレイ装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108256179A (zh) * 2017-12-29 2018-07-06 沈阳工业大学 一种预测材料蠕变曲线的方法
CN108256179B (zh) * 2017-12-29 2021-06-15 沈阳工业大学 一种预测材料蠕变曲线的方法

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