JP7484560B2 - Display device - Google Patents

Description

This disclosure relates to a display device that is attached to the dashboard of a vehicle.

One example of a conventional display device is that disclosed in Patent Document 1. This type of display device is fixed to the vehicle by covering a rib protruding from the lens on the front of the display device with a rubber cap, and fitting the dashboard (instrument panel part) into this part.

Japanese Utility Model Publication No. 02-045778

However, there was a problem in that when load was applied to the ribs through the dashboard due to vehicle vibrations, the lens surface became distorted, deteriorating the appearance of the display.

Therefore, this disclosure has been made in consideration of the above problems, and aims to provide a display device that has a good appearance when mounted on a vehicle.

The present disclosure comprises a front member 1 having a contact portion 11 that engages with an attachment member 9, a flyleaf member 2 arranged behind the front member 1, and a case member 5 arranged behind the flyleaf member 2, wherein the front member 1 has a first abutment portion 12 having a concave or convex shape , the flyleaf member 2 has a first abutment portion 22 that abuts the first abutment portion 12, a second abutment portion 23 that abuts the case member 5 at a position corresponding to the first abutment portion 12, and a second abutment portion 21 having a concave or convex shape at a position opposite the first abutment portion 12, and the second abutment portion 21 has the first abutment portion 22 or the second abutment portion 23 .
The product also comprises a front member 1 having a stop portion 11 that engages with an attachment member 9, a flyleaf member 2 that is arranged behind the front member 1, and a case member 5 that is arranged behind the flyleaf member 2, wherein the front member 1 has a first abutment portion 12 that is concave or convex, the flyleaf member 2 has a first abutment portion 22 that abuts against the first abutment portion 12, and a second abutment portion 23 that abuts against the case member 5 at a position corresponding to the first abutment portion 12, and the first abutment portion 22 or the second abutment portion 23 is formed to protrude from the flyleaf member 2.

1 is a front view of a display device showing an embodiment of the present disclosure. FIG. 2 is a cross-sectional view taken along line AA in FIG. FIG. 2 is a cross-sectional view taken along line BB in FIG. FIG.

This disclosure relates to a display device, and can be applied to a display device for a vehicle mounted on a moving object such as an automobile, motorcycle, or agricultural or construction machine.

The display device according to the embodiment of the present disclosure will be described below with reference to the attached Figures 1 to 3 using a vehicle instrument 100.

In the following description, the "front side" refers to the direction in which the driver seated in the driver's seat is viewed from the vehicle instrument 100, the near side in FIG. 1, and the upper side (rubber cap 6 side) in FIG. 2. The "rear (back) side" refers to the far side in FIG. 1 and the lower side (case 5 side) in FIG. 2.

As shown in FIG. 1, the vehicle instrument 100 is a device that is disposed in front of the occupant and displays information such as vehicle speed to the occupant. The vehicle instrument 100 includes a speedometer 101 that displays the vehicle speed and a tachometer 102 that displays the engine speed.

As shown in FIG. 2, the display device 100 comprises, from the front, at least a lens (front member) 1, a face cover (face cover member) 2, a pointer 3, a display panel 4, a case (case member) 5, a circuit board (not shown), and a rubber cap (cushioning member) 6.

Lens 1 is made of, for example, a translucent synthetic resin (e.g., acrylic). Lens 1 is fixed to endpaper 2 with a hook or the like, and covers the front opening of endpaper 2. Lens 1 functions as a covering member that covers the front of display board 4.

The lens 1 has a rib (contact portion) 11 with a rectangular cross section that protrudes forward at a position on the outer periphery that does not overlap with the visible portion M of the display panel 4. As shown in FIG. 3, this rib 11 fits into the dashboard (mounting member) 9 of the vehicle, thereby fixing the display device 100 to the vehicle. The lens 1 has a first recess (first abutment portion) 12 with a concave shape on the back. The first recess 12 is formed to be continuous with the rib 11. The first recess 12 is also formed to include the rib 11.

The surface of the see-through portion 13, which is the portion of the lens 1 that overlaps with the visible portion M of the display plate 4, is formed as a three-dimensional curved surface. In contrast, the recess back surface 12a that faces the inside cover 2 of the first recess 12 is formed as a surface parallel to the surface of the display plate 4. In other words, the recess back surface 12a is formed as a different surface that does not contact the surface of the see-through portion 13.

The endpaper 2 is made of an opaque black synthetic resin (e.g., polypropylene). The endpaper 2 is disposed behind the lens 1 and in front of the display plate 4. The endpaper 2 functions as a covering member that covers the outer periphery of the display plate 4. The endpaper 2 is engaged and fixed to the case 5 with a hook or the like.

The endpaper 2 has a concave second recess (second abutment portion) 21 on the back. The second recess 21 is formed in a position facing the first recess 12. The second recess 21 has a first abutment portion 22 that protrudes from the second recess 21 on the lens 1 side and abuts against the first recess 12. The second recess 21 has a second abutment portion 23 that protrudes from the second recess 21 on the display board 4 side and abuts against the display board 4. The second abutment portion 23 is formed in a position facing the first abutment portion 22.

The tip of the first abutment portion 22 is formed on a surface parallel to the recessed back surface 12a and abuts against the recessed back surface 12a in surface contact or line contact. The tip of the second abutment portion 23 is formed on a surface parallel to the display board 4 and abuts against the display board 4 in surface contact or line contact. The tips of the first abutment portion 22 and the second abutment portion 23 are chamfered.

The pointer 3 has an indicator 31 made of a light-transmitting resin and a pointer cap 32 made of a light-shielding resin. The pointer 3 is connected to a pointer drive unit made of a stepping motor at a position corresponding to the pointer cap 32, and rotates on the surface of the display plate 4. The pointer 3 indicates the vehicle speed and engine rpm by pointing the indicator part 41 of the display plate 4, which will be described later, with the indicator part 31.

The display plate 4 is made of a thin base material made of a translucent synthetic resin sheet (such as a polycarbonate sheet) with translucent and light-blocking inks printed on the front and back sides. The display plate 4 has a design printed with a light-blocking black ink that serves as the background color. The design has an indicator section 41 consisting of the scales and numbers of the speedometer 101 and tachometer 102, an opening 42 that serves as an opening for the digital display, and an indicator section 43 that serves as the design of turn signals, etc. The display plate 4 is placed behind the end cover member 2 and placed on the front surface of the case 5.

The indication portion 31 of the pointer 3 and the index portion 41 and indicator portion 43 of the display plate 4 are illuminated and emit light by a light source consisting of a chip-type light-emitting diode (LED: Light Emitting Diode) mounted on the circuit board behind them.

The case 5 is made of a light-blocking white synthetic resin (e.g., polypropylene). The case 5 is disposed behind the inside cover 2 and the display board 4. The case 5 secures the inside cover 2, which is disposed in front of the display board 4. The case 5 secures a circuit board to the rear. The case 5 houses a light source. The case 5 has multiple mounting stays 51. The mounting stays 51 are fixed to the dashboard 9 with fasteners such as screws, thereby fixing the display device 100 to the vehicle.

The circuit board is made of a rigid wiring board with a wiring pattern applied to a flat glass epoxy base material such as FR-4 (Flame Retardant-4). The circuit board is equipped with a pointer drive unit, a liquid crystal display, and various light sources, and various circuit components such as a control means that outputs command signals to drive and control these, resistors (resistance elements), and capacitors are conductively connected to the wiring pattern.

The rubber cap 6 is made of black rubber formed into a bag shape and covers the rib 11. The rubber cap 6 may be made of foamed plastic, nonwoven fabric, etc. The rubber cap 6 prevents symptoms such as creaking noises and abnormal noises even if friction occurs between the rib 11 and the dashboard due to vehicle vibrations, etc.

By being constructed in this manner, even if a load is applied to the rib 11 from the dashboard 9, the area around the rib 11 is ultimately supported by the highly rigid case 5 via the endpaper 2, preventing deformation of the lens 1 and providing a display device 100 with a good appearance.

Furthermore, by forming a first recess 12 in the lens 1 and increasing the rigidity near the rib 11, deformation of the lens 1 can be prevented, providing a display device with a good appearance. Furthermore, by forming a second recess 21 in the endpaper 2 and increasing the rigidity of this area, deformation of the endpaper 2 can also be prevented, and deformation of the lens 1 can be prevented, providing a display device with a good appearance.

Note that, although the display device 100 of the present disclosure has been described using the configuration of the above embodiment as an example, the present disclosure is not limited to this, and it goes without saying that various improvements and design changes are possible in other configurations as well, without departing from the gist of the present disclosure.

For example, the first recess 12 and the second recess 21 were formed in a concave shape on the back, but as shown in FIG. 4, they may be formed in a convex shape on the front. The second contact portion 23 was in contact with the display plate 4, but it may also penetrate the display plate 4 and contact the case 5.

100 Display 1 Lens (front member)
11 Rib 12 First recess (first abutment portion)
12a Recessed back surface 13 See-through portion 2 End cover (end cover member)
21 Second recess (second abutment portion)
22 First contact portion 23 Second contact portion 3 Pointer 31 Indicator portion 32 Pointer cap 4 Display plate 5 Case (case member)
51 Mounting stay 6 Rubber cap (buffer material)
9. Dashboard

Claims (4)

a front surface member having a stopper portion that fits with the mounting member;
an end cover member disposed behind the front cover member;
A case member disposed behind the end cover member,
the front surface member has a first abutment portion having a concave or convex shape,
A display device characterized in that the back cover member has a first abutment portion that abuts against the first abutment portion, a second abutment portion that abuts against the case member at a position corresponding to the first abutment portion, and a second abutment portion of a concave or convex shape at a position opposite the first abutment portion, the second abutment portion having the first abutment portion or the second abutment portion. a front surface member having a stopper portion that fits with the mounting member;
an end cover member disposed behind the front cover member;
A case member disposed behind the end cover member,
the front surface member has a first abutment portion having a concave or convex shape,
The inside cover member has a first abutting portion that abuts against the first abutted portion and a second abutting portion that abuts against the case member at a position corresponding to the first abutted portion,
The display device, wherein the first contact portion or the second contact portion is formed to protrude from the inside cover member. 3. The display device according to claim 1, wherein the first contact portion is formed to be continuous with the contact portion or is formed to include the contact portion. 3. The display device according to claim 1, wherein the stopper portion protrudes from the front member and is covered with a cushioning member.

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