JP2016222064A - Head-up display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a head-up display device which properly discharges a liquid entering into a housing.SOLUTION: A head-up display device 1 according to an embodiment includes: a display 2 which emits display light L; a reflecting mirror 3 which reflects the display light L; a combiner 4 which receives the display light L reflected by the reflecting mirror 3 to display virtual images; and a housing 6 which houses the display 2 and the reflecting mirror 3. The housing 6 has: an opening 613 through which the display light L reflected by the reflecting mirror 3 is emitted; a discharge port 600 for discharging a liquid entering through the opening 613; a first inclined surface 616 which conceals the discharge port 600 and inclines downward from the reflecting mirror 3 side to the display 2 side; and a second inclined surface 617 which inclines downward from a lower end side of the first inclined surface 616 toward the discharge port 600.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a head-up display device that appropriately discharges liquid that has entered a housing.

  A conventional head-up display device (HUD device) is disclosed in Patent Document 1, for example. In this HUD device, display light emitted from a display is reflected by a reflecting portion, and then the reflected display light is emitted from an opening of a housing to display a virtual image on a combiner.

Japanese Patent Laying-Open No. 2015-4927

  However, the liquid may enter from the opening of the housing that emits the display light, which may adversely affect the equipment inside the housing.

  An object of the present invention is to provide a head-up display device that appropriately discharges the liquid that has entered the housing.

The head-up display device according to the present invention includes:
An indicator that emits indicator light;
A reflecting mirror for reflecting the display light;
A combiner that receives the display light reflected by the reflecting mirror and displays a virtual image;
A head-up display device comprising: a housing for housing the display and the reflecting mirror;
The housing has an opening for emitting the display light reflected by the reflecting mirror, an outlet for discharging liquid that has entered through the opening, and concealing the outlet, from the reflecting mirror side toward the display side. A first slope inclined downward, and a second slope inclined downward from the lower end side of the first slope toward the discharge port.

  ADVANTAGE OF THE INVENTION According to this invention, the head up display apparatus which discharges | emits appropriately the liquid which penetrate | invaded the housing can be provided.

The perspective view of one embodiment of the present invention. The top view of the embodiment. The AA sectional view showing the main composition of the embodiment. The AA sectional view showing the composition of the housing of the embodiment. BB sectional drawing which shows the structure of the housing of the embodiment.

  A HUD device 1 as an embodiment to which the present invention is applied will be described with reference to the drawings.

  As shown in FIG. 3, the HUD device 1 mainly includes a display 2, a reflecting mirror 3, a combiner 4, a circuit board 5, and a housing 6.

  The display 2 includes, for example, a light source substrate on which a light source element such as an LED is mounted, an optical member made of a lens or a diffuser plate for uniforming the illuminance distribution of light emitted from the light source substrate, and the optical member. It consists of a liquid crystal panel illuminated by the light from the light source substrate that has passed through, and a case body that houses these members. The display 2 emits display light L that represents vehicle information such as the traveling speed of the vehicle.

  The reflecting mirror 3 is a flat mirror in which a flat reflecting surface is formed by depositing a metal such as aluminum on the surface of a resin member such as polycarbonate (PC). The reflecting mirror 3 reflects the display light L emitted from the display device 2 to the combiner 4.

  In the combiner 4, for example, a transflective layer is formed on the main surface of a light-transmitting resin such as a plate-shaped polymethyl methacrylate resin (PMMA) having a curved surface (a surface substantially opposite to the reflecting surface of the reflecting mirror 3). It is constituted by a half mirror. The combiner 4 receives the display light L reflected by the reflecting mirror on the main surface, and displays a virtual image.

  The circuit board 5 is mounted with a microcontroller in which a CPU, a memory for storing a program operated by the CPU, a timer, and an input / output unit for communicating with an external peripheral device and the like are integrated. The circuit board 5 is a control means for controlling the entire HUD device 1 and is connected to an in-vehicle network via a cable connected to a connector 50 mounted on the circuit board 5, and vehicle information obtained from the in-vehicle network. Is displayed on the display 2.

  The housing 6 is a case body that accommodates the display 2, the reflecting mirror 3, and the circuit board 5 and supports the combiner 4 so as to protrude from the housing 6. For example, the housing 6 may be a PC or polypropylene (PP). Consists of impermeable synthetic resin. The housing 6 includes a lower case 60, an intermediate case 61, and an upper case 62.

  As shown in FIG. 4, the lower case 60 is formed with a discharge port 600 for discharging the liquid that has entered the housing and an opening for exposing the connector 50 of the circuit board 5 to the outside of the housing. Yes.

  As shown in FIG. 4, the middle case 61 includes a first opening 610, a reflector mounting unit 611, a combiner mounting unit 612, a second opening 613, a third opening 614, and a light shielding wall 615. First slope 616 and second slope 617 are formed.

  The first opening 610 is an opening serving as an emission port for emitting the display light L emitted from the display 2, and the display 2 is fixed.

  The reflecting mirror 3 is fixed to the reflecting mirror mounting portion 611 so as to be substantially opposed to the display surface of the display 2 fixed to the first opening 610.

  The combiner 4 is fixed to the combiner mounting portion 612 so as to receive the display light L reflected by the reflecting mirror 3.

  The second opening 613 is an opening serving as an emission port for emitting the display light L reflected by the reflecting mirror 3. As shown in FIG. 5, an inclined surface 613 a that is inclined toward the second opening 613 is formed on the periphery of the second opening 613.

  The third opening 614 is an opening formed in the vicinity of the combiner placement unit 2. The third opening 614 is a hole from the display device 2 toward the reflecting mirror 3, and prevents liquid that has entered the middle case 61 from the third opening 614 from splashing on the display device 2.

  The light shielding wall 615 is a wall that hangs obliquely downward to prevent external light such as sunlight from entering the display 2. A slope inclined toward the second opening 613 and the third opening 614 is formed on the upper surface of the light shielding wall 615, and the liquid poured on the upper surface of the light shielding wall 615 is the second opening 613 or the third opening 614. It flows toward. Since the light shielding wall 615 is inclined toward the third opening 614, and the third opening 614 is a hole inclined toward the reflecting mirror 3 from the display 2 side, the third opening 614 is a combiner. It becomes difficult to see from the viewer who visually recognizes 4, and the aesthetic appearance is not impaired. In addition, the surface of the light shielding wall 615 is coated with a black paint that suppresses reflection of external light such as sunlight, and is coated with a coating for increasing hydrophobicity.

  The first inclined surface 616 is an inclined surface that hides the discharge port 600 and descends from the reflecting mirror mounting portion 611 toward the first opening 610. The liquid that has entered from the second opening 613 and the third opening 614 is guided to the second slope 617 described later by the first slope 616. Further, as shown in FIG. 5, the first slope 616 has an arc shape with a depressed center, and even a small amount of liquid flows to the second slope 617 without staying on the first slope 616. The surface of the first slope 616 is coated with a black paint that suppresses reflection of external light such as sunlight, and a coating for increasing hydrophobicity.

  The second inclined surface 617 is an inclined surface that descends from the lower end side of the first inclined surface 616 toward the discharge port 600. The liquid flowing from the first slope 616 is guided to the discharge port 600 by the second slope 617. Further, as shown in FIG. 5, the second slope 617 has an arc shape with a depressed center, and even a small amount of liquid flows to the discharge port 600 without staying on the second slope 617. Further, the surface of the second slope 617 is coated to increase hydrophobicity.

  The upper case 62 is fitted with the lower case 60 and covers the upper part. In the upper case 62, an opening for securing an optical path from the reflecting mirror 3 to the combiner 4 is formed, and the combiner 4 protrudes from the opening.

As described above, the HUD device 1 according to the present embodiment receives a display 2 that emits display light L, a reflecting mirror 3 that reflects the display light L, and a display light L that is reflected by the reflecting mirror 3 to generate a virtual image. The head-up display device 1 includes a combiner 4 for displaying, and a housing 6 that houses the display 2 and the reflecting mirror 3, and the housing 6 is an opening that emits display light L reflected by the reflecting mirror 3. 613, a discharge port 600 for discharging the liquid that has entered through the opening 613, a first inclined surface 616 that conceals the discharge port 600 and is inclined downward from the reflecting mirror 3 side toward the display 2 side, and a first inclined surface 616 And a second inclined surface 617 inclined downward from the lower end side toward the discharge port 600.
According to this configuration, the liquid that has entered from the second opening 613 is guided to the discharge port 600 by the first inclined surface 616 and the second inclined surface 617, and can be discharged from the discharge port 600 to the outside of the head-up display device 1. Further, since the discharge port 600 is concealed by the first slope 616, the aesthetic appearance is not impaired.

  The embodiment of the present invention has been described above. The present invention is not limited to the above embodiments (including the contents of the drawings). Modifications (including deletion of constituent elements) can be added to the above-described embodiment within the scope of the gist of the present invention.

1: Head-up display device (HUD device)
2: Display 3: Reflector 4: Combiner 5: Circuit board 6: Housing 60: Lower case 600: Outlet 61: Middle case 610: 1st opening 611: Reflector mounting part 612: Combiner mounting part 613: 2nd opening 614: 3rd opening 615: Light-shielding wall 616: 1st slope 617: 2nd slope 62: Upper case

Claims (1)

An indicator that emits indicator light;
A reflecting mirror for reflecting the display light;
A combiner that receives the display light reflected by the reflecting mirror and displays a virtual image;
A head-up display device comprising: a housing for housing the display and the reflecting mirror;
The housing has an opening for emitting the display light reflected by the reflecting mirror, an outlet for discharging liquid that has entered through the opening, and concealing the outlet, from the reflecting mirror side toward the display side. A head-up display device, comprising: a first slope that slopes downward; and a second slope that slopes downward from the lower end side of the first slope toward the discharge port.

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