JPH0513833U - Light emitting display - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] Each adjacent light emitting diode 1 that creates a bar display
Make sure that the seams and steps (displacement) of 5 are not visible,
It looks like a long light emitting diode. [Structure] A large number of prismatic light emitting diodes 15 are arranged in a row to form a bar display body 16 which is shaped into a desired length, and these bar display bodies 16 having a desired length are combined in a large number of rows. To form a display surface having a desired shape.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a light emitting display device for displaying, for example, a fuel amount, an oil amount, a liquid temperature, etc. of an automobile in a line.

[0002]

[Prior Art]

 FIG. 1 shows a conventionally used composite instrument for an automobile. In this conventional example, a vehicle speed is displayed by a digital display section 1 and a bar display section 2, and bar-shaped segments 3 are arranged vertically. Is a line indicator 4 such as a fuel gauge or a water temperature gauge. The bar-shaped segment 3 has a bar display structure that is vertically stacked using a liquid crystal element or a fluorescent display tube formed in a bar shape.

[0003]

[Problems to be solved by the device]

 However, in the line indicator 4 which uses a large number of bar-shaped segments 3 which are such liquid crystal elements or fluorescent display tubes, since the length of each bar-shaped segment 3 is constant in advance, The display area (display surface shape) of the line indicator 4 using this fixed segment is determined to be its own, and the display surface becomes a general square or rectangle as shown in FIG. It was difficult to form a modified display surface that matched the design.

In order to solve this difficulty, if bar segments having different lengths or fluorescent tubes are prepared in advance and a combination of these segments and fluorescent tubes is used to form a display surface having a desired shape, However, the cost was high and it was not practical.

[0005]

[Means for Solving the Problems]

 The present invention has been made by paying attention to such a drawback of the related art. A bar display body is formed in which a large number of prismatic light emitting diodes are arranged in a row to form a desired length, and further these desired lengths are formed. It is possible to form a display surface of a desired shape by combining multiple bar display units in a row with each other, and the seams and steps (displacement) of each adjacent light emitting diode that creates the bar display unit are It is an object of the present invention to provide a light emitting display device which can be made invisible to obtain an appearance as if it were a long light emitting diode.

[0006]

【Example】

 The present invention will be described in detail below with reference to the embodiments shown in the drawings.

In FIG. 3, reference numeral 11 denotes an on-vehicle instrument, and a digital speedometer 12 and an analog tachometer 13 each having 7 segments are arranged in a part of the instrument 11, and the other parts are arranged. A light emitting indicator 14 such as a fuel gauge using a bar indicator and a liquid thermometer is provided in the.

The structure of the light emitting indicator 14 is formed by arranging (combining) a large number of light emitting diodes 15 so that the display surface becomes a substantially trapezoidal display area.

Next, the structure of this luminescent indicator will be described. The light-emitting element 15 used to form the indicator 14 has a prismatic shape as shown in FIGS. Has a square shape. Therefore, the bar display 16 can be formed by arranging the light emitting elements 15 in a row in a row. The length of the bar display body 16 is arbitrary by setting the number of the light emitting elements 15 to be joined, and by vertically arranging the bar display bodies 16 having different lengths as shown in FIG. It is possible to form the light emitting indicator 14 having a trapezoidal area on the display surface.

As shown in FIG. 5, a group of light emitting elements 15 forming the light emitting indicator 14 is fitted and held in a holding frame 17 made of rubber, and each lead wire of the light emitting elements 15 is printed. It is connected to a circuit pattern (not shown) provided on the substrate 18. Reference numeral 19 is an instrument display plate, and a display window 20 is formed in the display plate 19 so as to see through the light emission display meter 14. Reference numeral 21 is a spacer interposed between the printed board 18 and the holding frame 17.

The light-emitting indicator 14 is composed of a large number of light-emitting elements 15, but when the plurality of light-emitting elements 15 are simply connected adjacently to each other to form the bar display body 16 as described above, A joint between the light emitting elements 15 or a step a between the adjacent light emitting elements 15 is generated, and especially when the light emitting element 15 is turned on, a boundary and a step between the light emitting elements 15 are generated. Therefore, the displayability of the bar display 16 is deteriorated.

In view of this, in this embodiment, as shown in FIG. 5 as an engineer for eliminating the seams and steps of each light emitting element 15, the display window 20 is closed on the back surface of the display plate 19, The surface is provided with sawtooth-shaped concavities and convexities, and a Nexy filter 22 having a black opaque film is provided only on the inclined surface in one direction, and the semitransparent filter ( Smoke printing filter) 23 is overlapped, and the surface of the semitranslucent filter 23 and the light emitting surface of the light emitting element 15 have a concavity and convexity of, for example, 7 to 20 μm on the joint surface with the filter 23. The transparent light diffusing plate 24 provided with the light diffusing surface 25, which is a matte printing by the above, is arranged.

As described above, in this embodiment, a large number of prism-shaped light emitting elements 15 are arranged to form the bar display body 16, and the light diffusing plate 24 and the semi-transmissive plate are provided on the display surface of the bar display body 16. , The semi-transparent filter 23, the semi-transparent filter 23, the semi-transparent filter 23, and the light diffusion plate 24. Since the display surface is seen through, the semi-transparent filter 23 and the light diffusion plate 24 diffuse the light from the light emitting element 15 due to the irregular reflection action when the light emitting element 15 is turned on. The step and the seam are effectively eliminated, and as a result, as shown in FIG. 6, the bar display body 16 that becomes an effective line display is obtained. In addition, in the above-described embodiment, the concave and convex surface having a sawtooth shape is formed on the surface, and the black and white opaque film is applied only to the one inclined surface of the sawtooth. By the action, the external light reflection on the surface of the light emitting element is reduced, whereby the display contrast by the light emitting element 15 is enhanced, and the sharpness of the display by the bar display body 16 is further improved.

[0014]

[Effect of the device]

 As described above, the present invention provides a light emitting display device in which the light emitting element 15 for displaying information by emitting light is disposed behind the display plate 19 having the display window 20, and in front of the light emitting surface of the light emitting element 15. And a light diffusing plate 24 having a light diffusing surface 23 formed on the surface thereof. The light diffusing surface 23 is disposed so as to face the side opposite to the light emitting surface. According to this, the light emitting element 15 having a prismatic shape is formed because the light emitting display device is formed in a row 16 in which the light emitting diodes are formed in a shape and the prismatic end surface is a light emitting surface. A plurality of bar display bodies 16 are arranged to form a bar display body 16, and a light diffusing plate 24, a semi-transparent filter 23, and a NEXY filter 22 are superposed on the display surface of the bar display body 16 in this order with a gap 23 therebetween. Place a semi-transparent filter 23 Since the structure is such that the display surface is seen through the Nexy filter 22, the semi-translucent filter 23, and the light diffusion plate 24, the semi-transmissive filter 23 and the light diffusion plate 24, Due to the diffuse reflection effect when the light emitting element 15 is turned on, the contour step and the seam of the adjacent light emitting element 15 are effectively eliminated, and as a result, as shown in FIG. 6, the bar display body 16 which is an effective line display is obtained. It is possible to obtain the effect that it is

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a conventional vehicle display device.

FIG. 2 is an explanatory view of a main part of a conventional example.

FIG. 3 is a front explanatory view showing an embodiment of a vehicle display device according to the present invention.

FIG. 4 is an explanatory view showing a defect of a display surface.

FIG. 5 is an explanatory sectional view showing the configuration of the present embodiment.

FIG. 6 is an explanatory plan view showing a display mode of the present embodiment.

[Explanation of symbols]

11 ... Meter 12 ... Speedometer 13 ... Tachometer 14 ... Light emitting display meter 15 ... Light emitting diode 16 ... Bar display body 17 ... Holding frame 18 ... Printed circuit board 19 ... Display board 20 ... Display window 21 ... Spacer 22 ... Nexy filter 23 ... Semi-translucent filter 24 ... Light diffusing plate 25 ... Light diffusing surface

Claims (1)

[Scope of utility model registration request] 1. A display plate (19) having a display window (20).
In a light emitting display device in which a light emitting element (15) for displaying information by emitting light is provided behind the light emitting element, a light diffusing surface (23) is provided in front of the light emitting surface of the light emitting element (15).
The light diffusing plate (24) on which the light diffusing surface (2
3) is disposed so as to face the side opposite to the light emitting surface, and further, the light emitting element (15) has a prismatic cross section,
A light emitting display device characterized in that a plurality of light emitting diodes whose end faces are prismatic light emitting faces are formed in a row shape (16) so as to be close to each other.