JP4316241B2 - Vehicle display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention mainly relates to a vehicle display device mounted on a vehicle such as a motorcycle.
[0002]
[Prior art]
Conventionally, a vehicle display device mounted on a vehicle as shown in FIG. 16 is known (see, for example, Patent Document 1).
[0003]
First, in terms of configuration, this meter 1 is a combination meter in which a plurality of meters are provided in one cluster 1a, and an analog meter unit 2 having a pointer 3 for analog display of measured values such as vehicle speed is provided. ing.
[0004]
The dial portion 5 provided with the scale portion 4 of the analog meter portion 2 is formed with substantially rectangular window portions 5a and 5b.
[0005]
Liquid crystal display devices 6 and 7 for digitally displaying information such as travel distance are embedded inside these windows 5a and 5b.
[0006]
In the conventional meter 1 configured as described above, a dial backlight light source (not shown) provided on the back side of the dial unit 5 is directed toward the front side of the dial unit 5 and the scale unit 4. The transmitted light that passes through the translucent characters and gauges is irradiated.
[0007]
Further, the liquid crystal backlight source (not shown) provided on the back side of the liquid crystal display devices 6 and 7 illuminates the meter by illuminating the transmitted light that passes through the glass portion of the liquid crystal display device. .
[0008]
[Patent Document 1]
JP 11-271100 A (FIG. 2)
[0009]
[Problems to be solved by the invention]
However, in the conventional vehicle meter 1, as shown by a two-dot chain line in the figure, when the display area of the liquid crystal display device 7 is enlarged and extends in the horizontal direction so as to straddle the scale portion 4, There has been a problem that the illumination of the dial backlight light source provided on the back side of the dial part 5 does not reach, for example, characters such as “0” and the corresponding peripheral edge of the gauge.
[0010]
Further, when the liquid crystal backlight light source provided on the back side of the liquid crystal display device 7 is used to illuminate the characters such as “0” and the corresponding gauge portion of the scale portion 4, the liquid crystal display device 7 Due to the illumination light passing through the glass portion end surface 7a, a brighter portion or darker portion appears in the area 8 indicated by the alternate long and short dash line in the drawing of the dial portion 5 and the display surface of the liquid crystal display device, and unevenness occurs. There was a problem of becoming.
[0011]
Furthermore, it is conceivable that a liquid crystal display device having a large area is provided on substantially the entire area 9 indicated by a broken line in the figure, and only the liquid crystal backlight of the liquid crystal display device is used to eliminate unevenness in brightness. The ratio of the area of the liquid crystal display device that is not used for the process increases, and there is a problem that the manufacturing cost increases as compared with the amount of information displayed.
[0012]
Accordingly, an object of the present invention is to set the size of a liquid crystal display device in accordance with the amount of information to be displayed by suppressing the increase in manufacturing cost and improving the degree of freedom of combination layout with an analog meter. The object is to provide a display device for a vehicle.
[0013]
[Means for Solving the Problems]
The present invention has been made paying attention to such problems, and in the invention according to claim 1, a liquid crystal display glass member and a polarizing plate for performing liquid crystal display. , Diffusion plate A liquid crystal display device on which liquid crystal is displayed on the left and right of the display surface, and the liquid crystal display device Diffuser On the back side , Using the diffusion plate A liquid crystal backlight point light source that illuminates transmitted light that passes through the liquid crystal display glass member, and an extended scale portion that is provided on the surface side of the liquid crystal display device so as to overlap at least partially. A meter scale display portion comprising a dial portion provided with a portion, and a dial backlight point provided on the back side of the dial portion of the meter scale display portion to illuminate transmitted light on the surface side of the dial portion A liquid crystal display glass member, wherein at least a part of the upper end surface of the liquid crystal display glass member is located on the back side of the extension scale part in a front view, and the polarizing plate includes the extension scale part. The liquid crystal display is formed on the upper end surface of the liquid crystal display glass member located on the back side of the extended scale portion, and is displayed on the left and right sides of the cutout portion. point It is provided diffusing means for diffusing the illumination from the source or the dial backlight point source On the other hand, the liquid crystal backlight point light source is also provided at a position on the back side of the diffuser plate and on the back side of the overlapping portion of the extension scale portion with the liquid crystal display device, and the liquid crystal backlight point light source emits light from the liquid crystal backlight point light source. After diffusing with a diffusion plate, the liquid crystal display glass member is transmitted to reach the back side of the overlapped portion. It features a vehicle display device.
[0014]
In the thing of Claim 1 comprised in this way, the said liquid crystal display glass member of Up The liquid crystal backlight is diffused by diffusing means provided on the end face point Light source or dial backlight point Illumination from the light source is diffused.
[0015]
For this reason, the liquid crystal backlight point Light source or dial backlight point The illumination of the light source Up Even if it is reflected or refracted by the end face, it reaches the dial part after being diffused.
[0016]
Accordingly, unevenness of brightness and darkness is suppressed on the surface of the dial portion, and even if a layout in which the scale portion partially overlaps on the surface side of the liquid crystal display device, the appearance quality is good. It can be.
[0017]
In addition, since the size of the liquid crystal display device can be set according to the amount of information to be displayed, an increase in manufacturing cost can be suppressed.
[0018]
Further, in the present invention, the diffusing unit may be the liquid crystal display glass member. Up End face or the Up The vehicle display device according to claim 1, wherein the display device is a diffusion coating applied to an end portion of a peripheral edge of the end surface.
[0019]
Here, the diffusion coating is a coating having a color and transparency that can diffuse illumination, such as white coating.
[0020]
In the thing of Claim 2 comprised in this way, the said diffusion coating is the said liquid crystal display glass member. Up End face or the Up The liquid crystal backlight is applied to the edge of the edge point Light source or dial backlight point After the illumination of the light source is diffused, it reaches the dial part. For this reason, unevenness of brightness and darkness is suppressed on the surface of the dial part.
[0021]
Further, the liquid crystal display glass member Up End face or the Up Since it can be roughly configured by applying diffusion coating to the end of the peripheral edge of the end surface, a separate part for diffusing is unnecessary. For this reason, an increase in manufacturing cost can be suppressed without increasing the number of parts.
[0022]
Further, according to a third aspect of the present invention, the diffusing means is the liquid crystal display glass member. Up End face or the Up It is rough surface processing applied to the edge of the edge of the end surface. Claim 1 Features a vehicle display device When is doing.
[0023]
In the thing of Claim 3 comprised in this way, the said rough surface processing is the said liquid crystal display glass member. Up End face or the Up The dial backlight is applied to the edge of the edge. point After the illumination of the light source is diffused by the rough surface processing, it reaches the dial portion. For this reason, unevenness of brightness and darkness is suppressed on the surface of the dial part.
[0024]
Further, the liquid crystal display glass member Up End face or the Up Since rough construction can be performed by roughening the end of the edge of the end face, no separate parts are required for diffusion. For this reason, an increase in manufacturing cost can be suppressed without increasing the number of parts.
[0025]
And in what was described in Claim 4, the said spreading | diffusion means is the said liquid crystal display glass member. Up It is a diffusion rubber member attached to the end face Claim 1 The vehicle display device is characterized.
[0026]
In the structure according to claim 4, the diffusion rubber member is formed of the liquid crystal display glass member. Up Can be easily attached to the end face.
[0027]
For this reason, the assembling property is good.
[0028]
Of the liquid crystal display glass member Up By the diffusion rubber member attached to the end surface, Up Pass through the end face or Up The illumination light reflected by the end face reaches the dial part after being diffused.
[0029]
Accordingly, unevenness of brightness and darkness is suppressed on the surface of the dial portion, and even if a layout in which the scale portion partially overlaps on the surface side of the liquid crystal display device, the appearance quality is good. It can be.
[0030]
Moreover, since the vehicle display device can be configured with the size of the liquid crystal display device corresponding to the amount of information to be displayed, an increase in manufacturing cost can be suppressed.
[0031]
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1
1 to 8 show a vehicle display apparatus according to Embodiment 1 of the present invention.
[0032]
The same or equivalent parts as those in the conventional example will be described with the same reference numerals.
[0033]
First, in terms of configuration, in the vehicle display device according to the first embodiment, the meter 10 mainly includes a housing formed by a housing 12 and a case frame 13 in which a glass cover 13a is fitted in a window portion. The body 11 includes a substrate 14, a guide light member 15, a liquid crystal display device 16, an analog meter 17, and the like housed in the housing 11.
[0034]
Of these, the meter of the analog meter 17 scale The dial part 17a as a display part is provided with a scale part 17d on the surface.
[0035]
The substrate 14 is provided with a movement 17c for moving the pointer 17b of the analog meter 17.
[0036]
Further, in the liquid crystal display device 16, a liquid crystal character string 16a for performing liquid crystal display is sandwiched between front and rear liquid crystal display glass members 16b and 16c, and front and rear liquid crystal display glass members 16b and 16c. The peripheral mating surfaces are sealed with epoxy resin.
[0037]
In the first embodiment, the total thickness t of the front and rear liquid crystal display glass members 16b and 16c is about 2.2 mm.
[0038]
And the polarizing plate 16d which has the notch part 16e in part is provided in the surface side of the front side liquid crystal display glass member 16b. The notch portion 16e is cut along the shape of the extended scale portion 17e extending so as to at least partially overlap the surface side of the liquid crystal display device 16 in the scale portion 17d of the dial portion 17a. It is missing.
[0039]
Furthermore, a polarizing plate 16f having a notch 16g in part is provided also on the back side of the rear liquid crystal display glass member 16c. This notch 16g is also Long It is notched along the shape of the scale part 17e.
[0040]
Further, the guide light member 15 is provided on the back side of the liquid crystal display device 16 and illuminates transmitted light that passes through the front and rear liquid crystal display glass members 16b and 16c. point A plurality of liquid crystal LEDs 20 as a light source are provided along the horizontal direction so as to alternate at the top and bottom at a predetermined interval.
[0041]
Further, a diffusion plate 18 is attached to the back side of the polarizing plate 16f. The diffusion plate 18 is mainly composed of a transparent polycarbonate sheet, and the portion corresponding to the LED for liquid crystal 20 is colored by white printing, and the portion away from the LED for liquid crystal 20 is transparent and is colored. Gradient printing is applied to an intermediate portion between the transparent portion and the transparent portion as necessary.
[0042]
And LED 20 for liquid crystal The light transmitted from the front and rear liquid crystal display glass members 16b and 16c is diffused by diffusing the illumination from.
[0043]
Further, the guide light member 15 is provided on the back surface side of the dial portion 17a and radiates transmitted light to the front surface side of the dial portion 17a. point Dial LEDs 21 as light sources are provided at predetermined intervals on the circumference so as to be substantially equidistant in the radial direction from the rotation center of the pointer 17b.
[0044]
The front and rear liquid crystal display glass members 16b and 16c, the polarizing plates 16d and 16f, and the diffusion plate 18 are sequentially attached to the liquid crystal holding member 16k through the frame body 16j and formed on the front surface portion 16n. The front side liquid crystal display glass member 16b is partially exposed and held so that the liquid crystal display can be visually recognized from the left and right window portions 16o and 16p.
[0045]
The liquid crystal display device 16 is fixed along the lower side of the guide light member 15 by engaging the locking leg portions 16m provided on the liquid crystal holding member 16k with the guide light member 15. It is comprised so that.
[0046]
Further, in the liquid crystal holding member 16k and the frame body 16j of the first embodiment, a light conducting recess is provided between the left window portion 16o and the right window portion 16p. 16q, 16r The liquid crystal LED 20 is illuminated with the light conducting recess. 16q, 16r Through Long An opening is formed so as to lead to the back side of the scale portion 17e.
[0047]
In the first embodiment, the upper surface of the liquid crystal holding member 16k is provided with the light conducting recess 16q. Lined up An upper opening 16s is formed.
[0048]
In the first embodiment, the front and rear liquid crystal display glass members 16b and 16c are used. In the upper side of the extended scale portion 17e The end faces 16h and 16i are provided with a diffusion coating 22 as a diffusion means for diffusing the illumination from the liquid crystal LED 20 or the dial LED 21.
[0049]
In the vehicle display device according to the first embodiment, the diffusion coating 22 is formed on the front and rear liquid crystal display glass members 16b and 16c. Up It is composed of a white coating applied across the end faces 16h and 16i, and a mixture of acrylic resin and a diffusion pigment such as titanium white is used. The refractive index of the diffusion coating 22 is about 1.5, which is substantially the same as that of glass.
[0050]
Next, the operation of the vehicle display device according to the first embodiment will be described.
[0051]
For example, as shown in FIG. 14, the illumination from the liquid crystal LED 20 is Up By being reflected and refracted by the end faces 16h and 16i, in the dial portion 17a, the area C is brightest including the maximum point, and the areas B and D located on both sides of the area C have normal brightness. . In the regions A and E, it gradually becomes darker as it is separated in the vertical direction in FIG. 14, and the effect of illumination from the liquid crystal LED 20 is lost below the point A0 in the drawing.
[0052]
Further, as shown in FIG. 13, the nonuniformity of the brightness is relatively shallow as compared with the case of light incident on the glass from the air shown in FIG. Since the total reflection is started at an angle, the illumination toward the region D is substantially totally reflected, the luminance of the region B is approximately doubled, and the region D is approximately zero. Here, the refractive index of the glass is 1.5.
[0053]
Further, as shown in FIG. 15, the illumination from the dial LED 21 Up Reflected and refracted in the vicinity of the end faces 16h and 16i, the dial portion 17a has a brightness gradient such that the area B is dark and the area C is normal, and the area C is downward in FIG. In the area A, it gets darker gradually, Up Light L incident from the back surfaces of the front and rear liquid crystal display glass members 16b and 16c other than the end surface reflected light reaches the region A without any problem.
[0054]
That is, the above Up When the light enters from the end faces 16h and 16i, it is totally reflected on the front and back surfaces of the front and rear liquid crystal display glass members 16b and 16c and does not reach the dial portion 17a. The width of the region B is considered to be substantially the same width because the thickness t of the front and rear liquid crystal display glass members 16b and 16c is 2.2 mm, and becomes narrow.
[0055]
In the first embodiment, the illumination from the liquid crystal LED 20 is incident on the rear liquid crystal display glass member 16c or the front liquid crystal glass member 16b from the back side of the front and rear liquid crystal display glass members 16b and 16c. , Up It is diffused when reflected by the diffusion coating 22 provided on the end faces 16h, 16i. For this reason, the brightness of the region B in FIG. 14 does not double, but reaches the regions A and C located at the periphery of the region B. Up The illumination reflected by the end faces 16h and 16i is scattered and dimmed.
[0056]
Further, the illumination from the dial LED 21 is caused by the front and rear liquid crystal display glass members 16b and 16c. Up It is diffused when reflected by the diffusion coating 22 provided on the end faces 16h, 16i. For this reason, the brightness of region C in FIG. 15 is also improved.
[0057]
Thus, the illumination of the liquid crystal LED 20 or the dial LED 21 Up Even if the light is reflected or refracted in the vicinity of the end faces 16h and 16i, it is diffused by the diffusion coating 22 and then reaches the dial portion 17a.
[0058]
Accordingly, even if a layout is employed in which unevenness of brightness and darkness is suppressed on the surface of the dial portion 17a and the extended scale portion 17e partially overlaps on the surface side of the liquid crystal display device 16, the liquid crystal is used. Brightness and darkness unevenness is not generated at the boundary between the display device 16 and the analog meter 17, and the appearance quality can be improved.
[0059]
Moreover, since it can set to the magnitude | size of the liquid crystal display device 16 according to the information content to display, the raise of manufacturing cost can be suppressed.
[0060]
Furthermore, in the first embodiment, as shown in FIG. 8, since the display area of the liquid crystal display device 16 can be displayed on one liquid crystal display device 16 so as to extend in the horizontal direction and straddle the extended scale portion 17e, Liquid crystal character strings 16a and 16a can be arranged above and below the extension scale portion 17e. For this reason, an increase in manufacturing cost is suppressed without increasing the number of liquid crystal display devices 16, and the degree of freedom in layout is improved.
[0061]
Further, the diffusion plate 18 is mainly composed of a transparent polycarbonate sheet, and a portion corresponding to the liquid crystal LED 20 is colored by white printing, and a portion away from the liquid crystal LED 20 is made transparent. The intermediate portion between the colored portion and the transparent portion is subjected to gradient printing as necessary.
[0062]
For this reason, the light from the plurality of liquid crystal LEDs 20 is diffused by the diffusion plate 18 so that the light source of the liquid crystal character string 16a of the liquid crystal display device 16 also becomes a surface light source. It also functions as a backlight, and uniform illumination can be obtained.
[0063]
Accordingly, the plurality of liquid crystal LEDs 20 can be arranged close to the back surfaces of the front and rear liquid crystal display glass members 16b and 16c, and the thickness of the liquid crystal display device 16 is set to be thin, so that In addition, the space can be saved so as to be accommodated together with the guide light member 15. Therefore, it is suitable for use in combination with the analog meter 17.
[0064]
Furthermore, in the vehicle display device of the first embodiment, the diffusion coating 22 has a refractive index of about 1.5, which is substantially the same as that of glass. For this reason, the front and rear liquid crystal display glass members 16b, 16c Up From the light incident on the white diffusion coating 22 from the end faces 16h and 16i and the diffusion coating 22 Up Refraction of light incident on the front and rear liquid crystal display glass members 16b and 16c through the end faces 16h and 16i is suppressed to a minimum.
[0065]
Therefore, the occurrence of uneven brightness in the illumination reaching the dial portion 17a is further suppressed, which is suitable for use as a backlight of a meter having uniform brightness.
[0066]
Embodiment 2
FIG. 9 shows a vehicle display apparatus according to Embodiment 2 of the present invention.
[0067]
Note that portions that are the same as or equivalent to those in the first embodiment will be described with the same reference numerals.
[0068]
In the vehicle display device according to the second embodiment, as the diffusing means, the front and rear liquid crystal display glass members 16b and 16c are provided. Up The end faces 16h and 16i are roughened to be provided with a roughened surface portion 23 so that illumination is diffused.
[0069]
Next, the operation of the vehicle display device according to the second embodiment will be described.
[0070]
In the second embodiment, the rough surface portion 23 formed by the rough surface processing is used for the front and rear liquid crystal display glass members 16b and 16c. Since it is applied to the upper end faces 16h and 16i, The illumination of the liquid crystal LED 20 or the dial LED 21 is diffused by the rough surface portion 23 and then reaches the dial portion 17a. For this reason, unevenness of brightness and darkness is suppressed on the surface of the dial portion 17a.
[0071]
The front and rear liquid crystal display glass members 16b, 16c Up End face 16h, 16i or these Up By roughening the edges of the edges of the end surfaces 16h and 16i, the rough surface portion 23 can be roughly configured, so that no separate parts are required for diffusion. For this reason, an increase in manufacturing cost can be suppressed without increasing the number of parts.
[0072]
Other configurations and operational effects are the same as or equivalent to those of the first embodiment, and thus description thereof is omitted.
[0073]
Embodiment 3
10 and 11 show a vehicle display apparatus according to Embodiment 3 of the present invention.
[0074]
The same or equivalent parts as in the first and second embodiments will be described with the same reference numerals.
[0075]
In the vehicle display device according to Embodiment 3, the front and rear liquid crystal display glass members 16b and 16c are used as the diffusing means. Up A diffusion rubber member 24 attached to the end portions of the front and rear liquid crystal display glass members 16b and 16c is provided so as to cover the end surfaces 16h and 16i.
[0076]
The diffusion rubber member 24 is made of an elastically deformable translucent white resin material, and the front and rear liquid crystal display glass members 16b, 16c Up Between the pair of sandwiching pieces 24b and 24c that sandwich the front and back surfaces near the end faces 16h and 16i, a diffusing section 24a that diffuses the illumination of the liquid crystal LED 20 or the dial LED 21 is integrally provided.
[0077]
And said Up In a state where the front and back sides in the vicinity of the end faces 16h and 16i are sandwiched, Up In order to improve the degree of adhesion between the end surfaces 16h and 16i and the diffusion portion 24a, a silicon-based adhesive is used, and the diffusion rubber member 24 and Up Air is configured not to intervene between the end faces 16h and 16i.
[0078]
Next, the operation of the vehicle display device according to the third embodiment will be described.
[0079]
In the third embodiment, since the diffusion rubber member 24 is elastically deformable, the front and rear liquid crystal display glass members 16b and 16c are expanded by expanding the gap between the sandwiching piece portions 24b and 24c. Up It can be easily mounted in the vicinity of the end faces 16h and 16i. For this reason, the assembling property is good.
[0080]
The front and rear liquid crystal display glass members 16b, 16c Up By the diffusion rubber member 24 mounted in the vicinity of the end faces 16h and 16i, Up Pass through end faces 16h, 16i or Up The illumination light reflected by the end faces 16h and 16i is diffused and then reaches the dial portion 17a of the analog meter 17.
[0081]
Therefore, even if the layout of the surface of the dial portion 17a is such that unevenness of light and darkness is suppressed and the extended scale portion 17e partially overlaps on the surface side of the liquid crystal display device 16, the appearance quality is improved. Can be made favorable.
[0082]
For this reason, since the display device for vehicles can be constituted with the size of the liquid crystal display device 16 according to the amount of information to be displayed, an increase in manufacturing cost can be suppressed.
[0083]
Other configurations and operational effects are the same as or equivalent to those of the first and second embodiments, and thus description thereof is omitted.
[0084]
As mentioned above, although the vehicle display apparatus of Embodiment 1 thru | or 3 of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to these Embodiment 1 thru | or 3, It is the present invention. Design changes that do not depart from the gist are included in the present invention.
[0085]
For example, in the first to third embodiments, the liquid crystal backlight point LED 20 for liquid crystal as a light source, the dial backlight point Although it has shown and demonstrated what uses LED21 for dial as a light source, it is not restricted to this in particular, For example, a light source comprised by a light bulb, a fluorescent lamp, or these LEDs may be sufficient, In the first and second embodiments, the liquid crystal LED 20 provided near the boundary line between the liquid crystal display device 16 and the dial portion 17a may be omitted, and any one of the dial LEDs 21. What is necessary is just to be provided in the boundary line vicinity of the liquid crystal display device 16 and the dial part 17a.
[0086]
In the first embodiment, the diffusion coating is performed. 22 Of the front and rear liquid crystal display glass members 16b and 16c. Up Although it has been described by exemplifying that it is constituted by a white coating applied across the end faces 16h, 16i, and a mixture of acrylic resin and a diffusion pigment such as titanium white is used, Not limited to this, any combination is possible as long as the diffusion pigment is mixed with a resin such as vinyl chloride or polyester, and the amount, material, color and transmittance are limited. Absent.
[0087]
Further, in the first embodiment, diffusion coating is performed. 22 Of the front and rear liquid crystal display glass members 16b and 16c. Up Although it has been described by exemplifying what has been applied across the end faces 16h, 16i, the present invention is not limited to this. For example, the front and rear liquid crystal display glass members 16b, 16c Up Diffusion coating on the front or back surface adjacent to the end faces 16h, 16i 22 Or the front and rear liquid crystal display glass members 16b and 16c. Up Diffusion coating of end faces 16h and 16i 22 And diffusion coating on the adjacent front or back surface 22 And may be combined.
[0088]
Also these diffusion paint 22 However, it is a matter of course that it may be a gradient painting as appropriate.
[0089]
Further, the rough surface portion 23 of the second embodiment also has the front and rear liquid crystal display glass members 16b and 16c. Up In addition to the end faces 16h and 16i, these Up A rough surface portion may be formed by being applied to the front surface portion or the back surface portion of the front and rear liquid crystal display glass members 16b and 16c adjacent to the end surfaces 16h and 16i.
[0090]
【The invention's effect】
As described above, in the first aspect, Located behind the extension scale Of the liquid crystal display glass member Up The liquid crystal backlight is diffused by diffusing means provided on the end face point Light source or dial backlight point Illumination from the light source is diffused.
[0091]
For this reason, the liquid crystal backlight point Light source or dial backlight point The illumination of the light source Up Even if it is reflected or refracted by the end face, it reaches the dial part after being diffused.
[0092]
Accordingly, unevenness of brightness and darkness is suppressed on the surface of the dial portion, and even if a layout in which the scale portion partially overlaps on the surface side of the liquid crystal display device, the appearance quality is good. It can be.
[0093]
In addition, since the size of the liquid crystal display device can be set according to the amount of information to be displayed, an increase in manufacturing cost can be suppressed.
[0094]
Moreover, in what was described in Claim 2, the said diffusion coating is the said liquid crystal display glass member. Up End face or the Up The liquid crystal backlight is applied to the edge of the edge point Light source or dial backlight point After the illumination of the light source is diffused, it reaches the dial part. For this reason, unevenness of brightness and darkness is suppressed on the surface of the dial part.
[0095]
Further, the liquid crystal display glass member Up End face or the Up Since it can be roughly configured by applying diffusion coating to the end of the peripheral edge of the end surface, a separate part for diffusing is unnecessary. For this reason, an increase in manufacturing cost can be suppressed without increasing the number of parts.
[0096]
Further, according to the third aspect of the present invention, the rough surface processing is performed on the liquid crystal display glass member. Up End face or the Up The dial backlight is applied to the edge of the edge. point After the illumination of the light source is diffused by the rough surface processing, it reaches the dial portion. For this reason, unevenness of brightness and darkness is suppressed on the surface of the dial part.
[0097]
Further, the liquid crystal display glass member Up End face or the Up Since rough construction can be performed by roughening the end of the edge of the end face, no separate parts are required for diffusion. For this reason, an increase in manufacturing cost can be suppressed without increasing the number of parts.
[0098]
And in what was described in Claim 4, the said diffusion rubber member is the said liquid crystal display glass member. Up Can be easily attached to the end face. For this reason, the assembling property is good.
[0099]
Further, the liquid crystal display glass member Up By the diffusion rubber member attached to the end surface, Up Pass through the end face or Up The illumination light reflected by the end face reaches the dial part after being diffused.
[0100]
Accordingly, unevenness of brightness and darkness is suppressed on the surface of the dial portion, and even if a layout in which the scale portion partially overlaps on the surface side of the liquid crystal display device, the appearance quality is good. It can be.
[0101]
For this reason, since the display apparatus for vehicles can be comprised with the magnitude | size of the liquid crystal display device according to the information content to display, the practically beneficial effect that an increase in manufacturing cost can be suppressed is exhibited.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an exploded perspective view illustrating a configuration of a main part of a vehicle display device according to a first embodiment of the present invention.
FIG. 2 is a front view of a meter in the vehicle display device according to the first embodiment.
FIG. 3 is an exploded perspective view illustrating the overall configuration of the vehicle display device according to the first embodiment.
4 is a perspective view illustrating a relationship between a liquid crystal display device and a light source in the vehicle display device of Embodiment 1. FIG.
5 is a perspective view of a front and rear liquid crystal display glass member for explaining a configuration of a main part in the vehicle display device of Embodiment 1. FIG.
6 is an exploded perspective view illustrating a configuration of a liquid crystal display device in the vehicle display device according to Embodiment 1. FIG.
7 is an exploded perspective view for explaining a state in which a liquid crystal character string is sandwiched between front and rear liquid crystal display glass members of the liquid crystal display device in the vehicle display device of Embodiment 1. FIG.
FIG. 8 is an enlarged front view of the main part of the vehicle display device according to the first embodiment.
9 is an enlarged perspective view of a waist portion of a liquid crystal display device in the vehicle display device according to Embodiment 2. FIG.
10 is a perspective view illustrating a configuration of a liquid crystal display device in the vehicle display device according to Embodiment 3. FIG.
11 is an exploded perspective view illustrating a configuration of a liquid crystal display device in the vehicle display device according to Embodiment 3. FIG.
FIG. 12 is a graph illustrating an example of the relationship between the incident angle and the reflectance of light incident on glass from the air, plotted with polarized light Rs and Rp that are 90 degrees different from each other.
FIG. 13 is a graph illustrating an example of the relationship between the incident angle of light incident on the air from the glass and the reflectance, plotted with polarized light Rs and Rp that are 90 degrees different from each other.
FIG. 14 is a schematic diagram for explaining the occurrence of uneven brightness on the dial surface when a liquid crystal LED is used as a light source.
FIG. 15 is a schematic diagram for explaining the occurrence of uneven brightness on the dial surface when the dial LED is used as a light source.
FIG. 16 is a front view illustrating the overall configuration of a conventional vehicle display device.
[Explanation of symbols]
10 Meter (Vehicle display device)
16 Liquid crystal display device
16h, 16i Up End face
17a Dial (meter scale Display section)
17d Scale part
17e total Long Scale part
20 LCD LED (Liquid Crystal Backlight point light source)
21 LED for Dial (Dial Backlight point light source)
22 Diffusion coating (Diffusion means)
23 Rough surface (Diffusion means)
24 Diffusion rubber member (Diffusion means)

Claims (4)

A liquid crystal display glass member that performs liquid crystal display, a polarizing plate, and a diffusion plate are provided, a liquid crystal display device that displays liquid crystal on the left and right sides of the display surface, and a diffusion surface that is provided on the back side of the diffusion plate of the liquid crystal display device A liquid crystal backlight point light source that illuminates transmitted light that passes through the liquid crystal display glass member using a plate, and an extended scale portion that is provided at least partially overlapping on the surface side of the liquid crystal display device; And a meter scale display portion comprising a dial portion having a scale portion on the surface, and a back surface side of the dial portion of the meter scale display portion, and illuminates transmitted light on the surface side of the dial portion. A dial backlight point light source, and at least a part of the upper end surface of the liquid crystal display glass member is a vehicle display device located on the back side of the extended scale portion in front view,
The polarizing plate is cut out in accordance with the shape of the extended scale portion, and the liquid crystal is displayed on the left and right of the cutout portion,
On the upper end surface of the liquid crystal display glass member located on the back side of the extended scale portion, a diffusing means for diffusing illumination from the liquid crystal backlight point light source or dial backlight point light source is provided,
The liquid crystal backlight point light source is also provided at a position on the back side of the diffuser plate and behind the overlapping portion of the extension scale portion with the liquid crystal display device, and illuminates the liquid crystal backlight point light source with the diffuser plate. The vehicle display device, wherein the liquid crystal display glass member is transmitted through the liquid crystal display glass member to reach the back side of the overlapped portion.   The vehicle display device according to claim 1, wherein the diffusing means is a diffusion coating applied to an upper end surface of the liquid crystal display glass member or an end portion of the peripheral edge of the upper end surface.   The vehicle display device according to claim 1, wherein the diffusing means is a rough surface process applied to an upper end surface of the liquid crystal display glass member or an end portion of the peripheral edge of the upper end surface.   2. The vehicle display device according to claim 1, wherein the diffusing means is a diffusing rubber member attached to an upper end surface of the liquid crystal display glass member.

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