JPH077214Y2 - In-vehicle display cover - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a vehicle-mounted display cover, particularly a cathode ray tube (CRT), a liquid
In-vehicle such as crystal display (LCD), plasma display (PDP), electrochromic display (ECD), fluorescent display tube (VFD), light emitting diode display (LED), analog type display device Display cover.

(Prior Art) On the instrument panel on the front of the vehicle, various displays and arrangements such as speedometer and fuel gauge are provided. In recent years, in order to simplify the display and layout of these TVs
In some cases, an on-vehicle display device such as a set is incorporated. A CRT display device may be installed in or near the instrument panel in order to display a navigation system for information other than these display devices, such as road condition information, if necessary.
A display cover incorporating a flat antiglare sheet for controlling light is installed on the front surface of the screen of these display devices in order to prevent window reflection on the windshield.

(Problems to be solved by the invention) However, this conventional vehicle-mounted display cover is
As shown in FIG. 4 and FIG. 4, the antiglare sheet 11 and the flat plate 12 made of glass or acrylic resin are adhered to each other via the adhesive layers 16 and 16, and the frame 13 and the mounting jig 14 are used. Since the anti-glare sheet part is closely mounted on the in-vehicle display device 15 and attached, there are many parts and the price is high, and it is difficult to attach, and there is a disadvantage that it is easy to make rattling noises while driving. , This is because even though the anti-glare sheet part and the display part are in close contact with each other, they are merely placed, so dust may get in from the gap between the parts due to vibration and accumulate on the screen of the display device. There is a drawback that the screen becomes dark and it becomes invisible in extreme cases, and because it is attached closely, the liquid crystal lattice or scanning cotton interferes with the shielding part of the antiglare sheet to generate a moire draft. There is a drawback that. Further, recently, since a spherical screen tends to be adopted in order to minimize the visual difference depending on the visual direction, the problem of dust and the problem of moire drafts have become more serious.

(Means for Solving the Problem) The present invention relates to a vehicle-mounted display cover that solves the above disadvantages and drawbacks, in which an antiglare sheet and a transparent cover member having an engaging portion are integrally molded. It is characterized by

That is, the present inventors have conducted various studies on a simple on-vehicle display cover that can be easily attached to an on-vehicle display device, and as a result, a known antiglare sheet,
A cover having an engaging portion such as a boss, a convex portion, or a concave portion is integrally molded with a transparent cover member obtained by forming the transparent synthetic resin material. We have found that the purpose can be achieved easily and at low cost by fitting the joint part to the locking part provided on the display device and attaching this in-vehicle display cover to the display device, and completed the present invention. It was

This will be described in more detail below.

(Operation) The in-vehicle display cover of the present invention is formed by integrally forming an antiglare sheet and a transparent cover member having an engaging portion such as a boss, a convex portion or a concave portion. The sheet 1 has, for example, a transparent silicone rubber layer 2 and red, orange, yellow, green, blue, navy blue, purple, black, as shown in FIG.
An example is one in which the silicone rubber layer 3 colored in brown or the like is laminated and integrated alternately and in multiple layers so that the joint surfaces are parallel to each other. This is mainly composed of silicone rubber. Therefore, it has excellent physical properties that it does not undergo thermal deformation even at high temperatures up to 200 ° C, and does not generate decomposition gas.This product has a transparent layer and a colored layer alternately laminated. When installed on the front surface of a display device such as a display device such as an LED, an LCD, a meter, a panel board display device, etc., light rays from the display device are blocked by the sheet surface, so that an antiglare effect is provided. The shape and size of the antiglare sheet are arbitrary, but normally, the shape and size may be the same as those of the display device to be antiglare, and the thickness of the antiglare sheet is within the range of visible angle, translucency and handling. 0.15 to 2.5m for convenience
It should be in the range of m. The width W ₂ of width W ₁ and the colored rubber layer 3 of transparent rubber layer 2 described above constituting the sheet
The transparency and parallel light transmittance of this sheet is W ₁ /
It is intended that determined by the ratio of W _2, since the range of the visible angle is determined by the width W ₁ of the refractive index of the transparent rubber layer 2 n, the thickness of the sheet t and the transparent rubber layer, the W ₁ is 50μ~ 0.3 m
m range, preferably 75 μ ~ 0.2 mm, W ₂ is 10 μ
Although ~ 50μ should not be a problem for human eyes, preferably it should be in the range of 15μ ~ 30μ, according to which the maximum transparency is about 85% and the visible angle is in the range of 30 ~ 50 °. You get something. In addition, this product can also form an angled colored layer in the sheet by slicing the laminated block at an angle, so that an antiglare sheet having an asymmetric visible angle with respect to the sheet surface can be obtained. This is especially effective when looking up at a high-altitude display device, which can block sunlight from entering and sharpen the internal display.This angle may be set arbitrarily, but it is practical. It is preferable that the angle range is 3 to 10 ° from the top.

The antiglare sheet configured as described above may be a reinforced antiglare sheet obtained by laminating and integrating a transparent member 4 such as transparent silicone rubber, plastic, plastic film, or glass on at least one surface thereof. The silicone rubber layer laminated and integrated with the antiglare sheet may have a smooth surface or may be provided with slight irregularities so as to reduce light scattering on the surface. The reflection of light on the surface is prevented and a non-glare effect is added. When the transparent layer 2, the colored layer 3, and the transparent member 4 are all made of rubber, there is an effect that the flexibility and flexibility are excellent.
At least 120 ° C for this plastic sheet
It is preferable to use a film of polyester, polysulfone, polycarbonate or the like because it is preferable to have heat resistance as described above, and according to this, a reinforced antiglare sheet having excellent physical strength such as tensile strength and tear strength. In addition to this, it can also be printed on an integrated film to serve as a display, or can be a film treated with a heat resistant fireproofing agent. If so, 2 such as punching
Subsequent workability is also improved. It should be noted that the plastic sheet and glass plate laminated and integrated with this antiglare sheet may be either glossy or non-reflective, which makes the surface less likely to be scratched and has excellent heat resistance. . In addition to this, as the antiglare sheet, one provided with a linear louver using cellulose acetate butyrate, or using a photocurable resin, dots, lines,
It may be provided with a lattice-shaped relief, but is preferably made of silicone rubber having high heat resistance.

Further, the transparent cover member integrally formed with the antiglare sheet or the reinforced antiglare sheet is required to be integrally made of resin or rubber having high light transmissivity, preferably transparency. Therefore, this is a resin that has good transparency and therefore good light transmission, such as polymethylmethacrylate resin, polycarbonate resin, polyethylene resin,
Polypropylene resin, polystyrene resin, polyvinyl chloride resin, polyarylate resin, polysulfone resin, ABS
It may be molded from resin or the like, and may be made from synthetic rubber such as ethylene-propylene-diene rubber, silicone rubber, acrylic rubber, NBR.

However, since it is for in-vehicle use, it may be made of a resin or rubber having both heat resistance and transparency, such as polycarbonate resin, polymethylmethacrylate resin, polyarylate, polysulfone, and silicone rubber. Good. These resins or rubbers may contain dyes and pigments, colorants, or fillers whose surfaces have been subjected to antireflection treatment.

The on-vehicle display cover of the present invention is a cover made of the above-mentioned transparent resin or rubber on the above-mentioned antiglare sheet, and having an engaging portion such as a boss, a convex portion or a concave portion for engaging with the on-vehicle display device. It is made by integrally molding a member.

As shown in FIG. 2 (a), this on-vehicle display cover is a cap-shaped cover member 6 formed by molding the antiglare sheet 1 from the transparent resin and having a boss 5 as an engaging portion. The vehicle-mounted display cover 7 may be attached to the inside, which is shown in FIG.
As shown in (c), a claw 8 may be provided on the inner wall of the cover member 6 instead of the boss 5 as the engaging portion, and the degree of haze is 0 to 15 on the upper surface of the cover member 6. The surface may be provided with a satin pattern 9 by blasting or transferring the blasted mold so that

The display screen corresponding portion of the in-vehicle display cover 7 of the present invention is similar to the curved shape of the display screen as shown in FIG. 2 (a), preferably the same curved shape, and the antiglare sheet portion is 2 to 3 mm from the display screen. If they are separated from each other, no moire is generated, and the cushioning material 11 is interposed between the locking portion 10 of the display device or the abutting portion of the display device and the cover 7 of the present invention during running. Alternatively, it is possible to prevent the rattling noise of idling. Further, if the cushion material 11 is an airtight ring-shaped member, foreign matter such as dust will not enter between the display screen and the cover 7, so that the screen will not be difficult to see even after long-term use. As the cushion material, a sponge made of heat-resistant butyl rubber, silicone rubber, a tube, a solid ring or the like is appropriately selected and used according to the purpose, as shown in FIGS. 2 (d) and (e). If the silicone rubber layer 12 conforming to the shape of the mounting groove and the silicone rubber sponge layer 13 extending from the mounting groove are connected and integrated, the packing can be repeatedly attached and detached from the mounting groove. It can be easily done without tearing, and since it has a sponge layer, it is expected to have an excellent sealing property.

(Example) Next, the Example of this invention is given.

Reference Example 1 A transparent silicone rubber sheet with a thickness of 240μ is made from a transparent silicone rubber compound: KE164 U [trade name of Shin-Etsu Chemical Co., Ltd.], and a silicone rubber compound: KE981 U [Product of Shin-Etsu Chemical Co., Ltd.] [Name] Add 5 parts of carbon black to 100 parts and knead it uniformly to make a black silicone rubber sheet with a thickness of 40μ, and stack them alternately to form a block body with a thickness of 350mm. After curing by heat and pressure under the condition of ℃, 100kg / cm ³ G, the transparent silicone rubber layer and the black silicone rubber layer are alternately parallel to each other by slicing this on the surface perpendicular to the laminating direction of the sheet. A laminated sheet having a thickness of 0.4 mm was made.

This sheet is made of a flexible elastic elastomer that normally has a heat resistance of 200 ℃ and has a light-shielding rate of 40/240 + 40.
× 100 = 14.30%, visible light transmittance 65%, visible angle θ = 11
It was a 0 ° heat-resistant antiglare sheet.

Reference Example 2 A transparent silicone rubber film having a thickness of 100 μ was laminated and integrated on both sides of the antiglare sheet obtained in Reference Example 1,
This product had a smooth surface and reduced surface diffusion disturbance, and the light transmittance was 72%, and the lower display was clearly legible.

Example The sample obtained in Reference Example 2 was cut into a size of 112 × 85 mm,
This was placed in a mold, and a transparent polymethylmethacrylate resin was injected thereinto to prepare an in-vehicle display cover member having a claw inside as shown in FIG. 2 (b).

Since this one has a claw inside, it was easily attached to and detached from this display device when it was attached and detached to and from the recess serving as the locking portion of the vehicle-mounted display.

(Effect of the Invention) Since the in-vehicle display cover of the present invention is integrally formed with the antiglare sheet and the transparent cover member having the engaging portion, it is inexpensive because the number of parts is small,
The mounting on the in-vehicle display device is simple because the locking portions such as the boss, the convex portion, and the concave portion are simply fitted to the engaging portions provided on the in-vehicle display,
Since this shape is also arbitrary, it has an advantage that the degree of freedom in design is large.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing an embodiment of an antiglare sheet which constitutes a vehicle-mounted display cover of the present invention, FIG. 2 (a).
Is a sectional view showing one embodiment of the in-vehicle display cover of the present invention, and FIG. 2 (b) is a longitudinal sectional view showing another embodiment.
2 (c) is a plan view of the on-vehicle display cover shown in FIG. 2 (b), and FIGS. 2 (d) and 2 (e) are sectional views of the packing material used in the present invention, FIG. 3 and FIG. FIG. 4 is a vertical sectional view of a conventionally known vehicle-mounted display cover. 1 , 11 ... Antiglare sheet, 2 ... Transparent part, 3 ... Colored part, 4 ... Transparent film, 5 ... Engagement part, 6 ... Cover member, 7 ... In-vehicle display cover, 8 ……nail,
9: satin pattern, 10: locking part, 11: packing material,
13 …… Frame, 14 …… Mounting jig, 15 …… In-vehicle display device, 16 …… Adhesive layer.

Claims (1)

[Scope of utility model registration request] 1. An in-vehicle display cover, which is formed by integrally molding an antiglare sheet and a transparent cover member having an engaging portion.