JP2000250423A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device in which a shading member is not exposed on a front side of a display board. SOLUTION: A display board 21 of an indicating instrument 15d has a 1st transmission part 36 of almost a rectangle and a framed 2nd transmission part 37 installed in the periphery of the 1st transmission part 36. A luminescence type indicator 39, which displays figures by segments 40 arranged in a letterform of 8, is provided behind the display board 21. The 2nd transmission part 37 is transmission-illuminated by a linear light source 22 such as a cold-cathode tube. The light of the linear light source 22 is reflected to the 2nd transmission part 37 by a reflecting interface 42 of a light transmission member 23. A shading member 43 is arranged so as to be abutted on the backside of the display board 21, and prevents the linear light source 22 from leaking into the 1st transmission part 36.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly to a display device for displaying a frame around a display unit.

[0002]

2. Description of the Related Art Conventionally, there is a display device for displaying a frame around a numeral (see FIG. 6). Reference numeral 1 denotes a light-emitting diode display. The light-emitting diode display 1 has a number display section 3 composed of segments 2 arranged in a Japanese character shape.
The light emitting diode display 1 displays a number by appropriately turning on or off the light emitting diode corresponding to each segment 2. Reference numeral 4 denotes a display plate. The display plate 4 is obtained by forming a frame-shaped print layer 6 on a substrate 5. A rectangular opening 7 is formed in the display plate 4, and the numeral display unit 3 is visually recognized through the opening 7.

[0003]

In recent years, in order to improve the design, a display device in which a frame emits light is required. An object of the present invention is to provide a display device capable of emitting and displaying a frame.

[0004]

According to the present invention, there is provided a display 39, a first transmitting portion 36 provided at a position corresponding to the display 39, and the first transmitting portion. A display panel 21 having a second transmissive portion 37 surrounding 36;
And the light source 22 that transmits and illuminates the second transmission section 37.

Further, the present invention has a light guide member 23 disposed on the rear side of the display panel 21 and having a reflecting surface 42 for reflecting the light of the light source 22 to the second transmitting portion 37. .

In the present invention, the light guide member 23 has a second reflection surface 44 for reflecting the light of the light source 22 to the reflection surface 42.

Further, the present invention has light shielding members 43 and 46 for preventing the light of the light source from leaking to the first transmitting portion.

In the present invention, a translucent transparent member 31 is provided in front of the display panel 21.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The display panel 21 of the indicating instrument 15d is
It has a substantially rectangular first transmitting part 36 and a frame-shaped second transmitting part 37 provided around the first transmitting part 36. Behind the display panel 21, there is provided a light-emitting display 39 for displaying numbers by segments 40 arranged in a Japanese character shape. The second transmitting portion 37 is a linear light source 2 such as a cold cathode fluorescent lamp.
2 for transmitted illumination. Light from the linear light source 22 is reflected by the reflection surface 42 of the light guide member 23 to the second transmission portion 37. The light-shielding member 43 is provided for transmitting the light from the linear light source 22 to the first transmitting portion 3.
6 to prevent leakage.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a display device for a vehicle will be described below with reference to the accompanying drawings. 1 to 4
FIG. 3 is a diagram showing a first embodiment.

Reference numeral 10 denotes a housing. The housing 10 has a front housing 11, a rear housing 12, a rear cover 13, and an upper cover 14. The housing 10 has four indicating instruments 15, that is, a speedometer 15a,
A fuel gauge 15b, a water temperature gauge 15c, and a tachometer 15d are housed therein. Speedometer 15a and tachometer 15d are fuel gauge 15b
And the water temperature gauge 15c is larger than the fuel gauge 15c.
b and the water temperature gauge 15c are arranged between the speedometer 15a and the tachometer 15d.

A liquid crystal display 16 is provided on the housing 10.
And a fluorescent display tube 17 are housed therein, and are disposed above the fuel gauge 15b and the water temperature gauge 15c. Fluorescent display tube 1
Reference numeral 7 is connected to a circuit board 18, and the upper cover 14 is fixed to the front housing 11 with screws to cover the fluorescent display tube 17 and the circuit board 18, and protects the fluorescent display tube 17 and the circuit board 18. An opening 19 is formed in the front housing 11 at a position facing the fluorescent display tube 17, and display light L <b> 1 of the fluorescent display tube 17 passes through the opening 19 and is projected on the half mirror 20.

The half mirror 20 is arranged obliquely and sandwiched between the front housing 11 and the rear housing 12.
The transmittance of the half mirror 20 is about 50%. The display light L2 of the liquid crystal display 16 passes through the half mirror 20 and reaches the observer. On the other hand, the display light L1 of the fluorescent display tube 17 is reflected by the half mirror 20 and reaches the observer. The rear cover 13 includes the front housing 11 and the rear housing 12.
To prevent dust from entering the housing 10.

The indicating instrument 15 includes a dial 21 (display panel),
It has a cold cathode tube 22 (light source), a light guide member 23, a pointer 24, a stepping motor 25, and a circuit board 26. The cold cathode tube 22 and the light guide member 23 are arranged behind the dial 21, and the indicator 27 is illuminated by light from the cold cathode tube 22. The pointer 24 is rotated by the stepping motor 25 and indicates the indicator 27 of the dial 21. The light of the cold cathode tube 22 is guided to the pointer 24 by the light guide member 23, and the indicator 28 of the pointer 24 shines.

The liquid crystal display 16 comprises a TFT (thin film transistor) type liquid crystal display element in which a number of pixels are arranged, and a light source for illuminating the liquid crystal display element from behind. indicate. The fluorescent display tube 17 has a light-emitting segment in the shape of a character and displays the time.
Normally, the liquid crystal display 16 is in a non-display state, and the fluorescent display tube 17 displays the time as a virtual image. Further, the user can switch the display with the operation switch, turn off the fluorescent display tube 17, and display the route guidance information on the liquid crystal display 16 (see FIG. 2).

Reference numeral 29 denotes a protective cover. The protective cover 29 is locked on the front side of the front housing 11 by locking claws. The protective cover 29 includes a frame member 30, a first see-through plate 31 (see-through member), and a second see-through plate 32. The frame member 30 has a first opening 33 and a second opening 34 at locations corresponding to the indicating instrument 15 and the liquid crystal display 16, respectively.
A first see-through plate 31 and a second see-through plate 32 are welded to the second opening 34, respectively.

The frame member 30 is made of an opaque resin such as polypropylene.
Reference numerals 1 and 32 are made of a translucent resin such as polycarbonate. The transmittance of the first see-through plate 31 is about 50%, and the transmittance of the second see-through plate 32 is about 80%. first,
The second see-through plates 31 and 32 have a curved shape,
It is convex on the liquid crystal display 16 side.

FIG. 1 is an enlarged view of a main part. The dial 21 of the tachometer 15d is composed of a light-transmitting substrate 35 made of a light-transmitting resin (for example, polycarbonate) and an index portion 27, a substantially rectangular transmission portion 36 (first transmission portion), and a frame-shaped transmission portion 37 (second transmission portion). The light-shielding layer 38 is printed except for the transparent portion of FIG. Reference numeral 39 denotes a light-emitting diode display. The light-emitting diode display 39 has a number display section 41 composed of segments 40 arranged in a Japanese character shape. When the shift position of the AT (automatic transmission) is “D” (drive), the number display section 41 displays the transmission gear position with numbers “1” to “4”. The number display section 41 is visually recognized from the transmission section 36 of the dial 21.

The light guide member 23 is made of a translucent resin such as acrylic. The light guide member 23 is provided with an inclined reflection surface 42 (reflection surface) at a position corresponding to the frame-shaped transmission portion 37, and the light of the cold cathode tube 22 is reflected by the inclined reflection surface 42 to form the frame-shaped transmission portion 37. Transmitted illumination. Reference numeral 43 denotes a light-shielding member.
6 so as to abut against the rear surface of the dial 21 so as not to leak into the dial 6. FIG. 2 is an enlarged view of the light guide member 23 near the inclined reflection surface 42. The light guide member 23 has a slit 44
Are formed, and the light of the cold cathode tube 22 is
Is reflected by the inclined reflecting surface 42 by the reflecting surface 45 (second reflecting surface). Accordingly, the entire frame-shaped transmission portion 37 can be transmitted and illuminated with substantially uniform brightness by one cold cathode tube 22.

FIG. 5 shows a second embodiment. The second embodiment is the same as the first embodiment except for the dial 21, the cold cathode tube 22, and the light shielding member 46. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.
The light shielding member 46 is attached to the opening 47 of the dial 21. The light shielding member 46 has a flange 46a.
a is exposed on the front side of the dial 21. A bulb (light source) is arranged behind the dial 21.

According to each of the embodiments described above, the frame-shaped transmissive portion 37 can emit light. The first embodiment is more preferable than the second embodiment, and the light shielding member 43 is
There is no danger of the appearance being deteriorated by being exposed on the front side. Further, since there is no flange 9a as in the related art, the distance D1 between the numeral display portion 41 and the frame-shaped transmissive portion 37 can be reduced, and the display device has an excellent appearance. In addition, a semi-transparent see-through plate 31 is provided in front of the dial 21 and the boundary 36a of the transmissive portion 36 is inconspicuous, so that the appearance is good.

Although the protective cover 29 of each embodiment is composed of the frame member 30, the first transparent plate 31 and the second transparent plate 32, the protective cover (transparent member) is made of, for example, a semi-permeable resin. ) May be integrally formed. The indicator may be an indicator such as a fuel level warning light and a seat belt non-wearing warning light.

[0023]

According to the present invention, there is provided a display plate having a display, a first transmission portion provided at a position corresponding to the display, and a second transmission portion surrounding the first transmission portion. A light source that transmits and illuminates the second transmission portion, and a light blocking member that is disposed so as to be in contact with a rear surface of the display panel and that prevents light from the light source from leaking to the first transmission portion. , The second transmissive part can be displayed by light emission.

Further, the present invention includes a light guide member disposed on the rear side of the display panel and having a reflecting surface for reflecting light of the light source to the second transmitting portion. By guiding to the second transmission part, the second transmission part can be transmitted and illuminated with high luminance.

Further, according to the present invention, the light guide member has a second reflection surface for reflecting the light of the light source to the reflection surface, and the single light source allows the second transmission portion to be substantially uniform. Transmitted illumination can be performed with luminance.

Further, the present invention has a light shielding member for preventing light of the light source from leaking to the first transmitting portion.
It is possible to prevent light from the light source from leaking into the first transmitting portion.

Further, in the present invention, a semi-transparent see-through plate is provided in front of the display panel, and the boundary line of the first transmissive portion is inconspicuous, so that the appearance is good.

[Brief description of the drawings]

FIG. 1 is an enlarged view of a main part showing a first embodiment of the present invention.

FIG. 2 is an enlarged view of a light guide member showing the embodiment.

FIG. 3 is a front view of the display device showing the embodiment.

FIG. 4 is a sectional view of a display device showing the embodiment.

FIG. 5 is an enlarged view of a main part showing a second embodiment of the present invention.

FIG. 6 is a front view and a cross-sectional view of a display device showing a conventional example.

[Explanation of symbols]

 Reference Signs List 21 dial plate (display plate) 22 cold-cathode tube (light source) 23 light guide member 31 first see-through plate (see-through member) 39 display 36 transmission unit (first transmission unit) 37 frame-shaped transmission unit (second transmission unit) (Transmissive part) 39 Display 42 Inclined reflective surface (reflective surface) 43 Reflective surface (second reflective surface)

Claims (5)

[Claims] 1. A display panel comprising: a display; a first transmission unit provided at a location corresponding to the display; and a second transmission unit surrounding the first transmission unit; A light source for transmitting and illuminating a transmission part. 2. The display device according to claim 1, further comprising a light guide member disposed on a rear side of the display plate and having a reflection surface for reflecting light of the light source to the second transmission portion. Characteristic display device. 3. The display device according to claim 2, wherein the light guide member has a second reflecting surface for reflecting the light of the light source to the reflecting surface. 4. The display device according to claim 1, further comprising a light blocking member for preventing light of the light source from leaking to the first transmitting portion. 5. The display device according to claim 1, wherein a semi-transparent transparent member is provided in front of the display plate.