JPH0954559A - Light emitting diode display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve product quality, such as durability, reliability and display accuracy, and to make thickness reduction possible by decreasing the conventional mechanical constituting parts. SOLUTION: A radial piece 11 of an index part is circumferentially divided at equal angles to constitute many pointers 13. LEDs 21 to 23 of different colors are arranged opposite to these pointers 13 to make the light rays of different colors on the radial piece 11. These light rays are emitted to a front surface side by a reflection surface 12. The LEDs 21 to 23 facing the pointers 13 of prescribed angle positions are made to emit light according to traveling speeds by a light emission control means, by which speeds are displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting diode display device applicable to vehicle speed meters, tachometers, and other vehicle meters, and more particularly to a light emitting diode (hereinafter simply referred to as "LED") device. A meter for vehicles that uses a scale and pointers to emit light, and
The present invention relates to an LED display device such as a display device in which an image such as an arbitrary figure can be freely displayed by using an LED.

[0002]

2. Description of the Related Art As a conventional speedometer for a vehicle, a magnetic type speedometer is generally used. This speedometer has a dial, a pointer, and a drive unit for rotationally driving the pointer to display a speed. It is equipped with a pointer to display the speed on the dial scale.

On the other hand, a vehicle meter such as a speedometer has a function of transmitting man-machine information such as a vehicle speed, and also acts as a component of an interior of the vehicle. And
Vehicle meters occupy the main part of the instrument panel, which is the most noticeable part of the driver, and its design is also important.In recent years, various meters themselves have been created due to the diversification of user's taste and sensitivity. There have been various attempts such as the configuration of the above and their arrangement.

Further, it is preferable that the vehicle meter such as the speedometer is arranged as far as possible from the position of the eyes of the driver in consideration of hyperopia of middle-aged and elderly people.

[0005]

However, the conventional vehicular meter has a complicated mechanical structure, and there is room for improvement in terms of maintenance and display accuracy in consideration of wear of mechanical parts due to use. is there. Further, the design of the conventional vehicle meter is limited to that at the time of manufacture, and the design cannot be changed according to the individual taste of the user. Further, the conventional design including the dial and the pointer as a mechanical component cannot meet the diversified taste of the user, and there is room for improvement in terms of design.

Further, the conventional vehicular meter requires a space for the drive mechanism, and therefore requires a certain depth in the meter panel and cannot be made thin.
Therefore, the degree of freedom in designing the meter panel is reduced accordingly, and there is room for improvement in terms of design. In addition, for the same reason, it is not possible to increase the distance between the vehicle meter and the position of the eyes of the driver, and there is room for improvement in terms of visibility when considering hyperopia of middle-aged and elderly people.

Conventionally, as a display device for displaying an image such as a figure using an LED, for example,
LEDs that can emit full-color light are arranged in a dot matrix, and LEs at predetermined dot positions are selected according to the desired image.
There is one in which D is emitted in a predetermined color and the image is displayed in dots.

However, in such a display device, there is a limit in reducing the size of the LED forming each dot, and there is room for improvement in image quality improvement such as smoothing the outline of an image. Further, this display device needs to use a large number of LEDs capable of emitting full-color light, and there is room for improvement in cost.

Therefore, the present invention can be applied to a vehicle meter, can reduce the number of conventional mechanical components, improve the product quality such as durability, reliability, display accuracy, etc., and can reduce the thickness. The first object is to provide an LED display device capable of increasing the degree of freedom in design and increasing the distance from the driver's eye position.

A second object of the present invention is to provide an LED display device which can be applied to a meter for vehicles and which can produce a unique design effect by using LEDs.

Further, the present invention can be applied to a vehicle meter, can provide a unique design effect by using an LED, and can provide a simple structure for that purpose. Is the third issue.

A fourth object of the present invention is to provide an LED display device capable of displaying a desired image by using LEDs and improving the image quality thereof.

[0013]

An LED according to claim 1
In the display device, a lower surface formed by making the central portion thinner than the outer peripheral portion is used as a reflecting surface, and the width of the central portion is narrower than the outer peripheral portion of a plane perpendicular to the thickness direction and has a predetermined angle. A radial piece made of a light guide, and an LED arranged on the outer peripheral portion of the radial piece to inject light into each radial piece, and a plurality of the radial pieces are overlapped in a plane direction to form a predetermined angle. In addition, each of the radial pieces is made to correspond to an LED that makes light incident.

According to a second aspect of the present invention, in addition to the structure of the first aspect, the LED display device further comprises control means for causing the LED facing the radial piece at a predetermined angular position to emit light according to the traveling speed. is there.

According to a third aspect of the present invention, there is provided an LED display device in which the LED according to the first or second aspect has two or more colors.

According to a fourth aspect of the present invention, in the LED display device, the lower surface formed by making the thickness of the central portion thinner than the outer peripheral portion serves as a reflecting surface, and the width of the central portion of the plane perpendicular to the thickness direction rather than the outer peripheral portion. Is arranged at the outer peripheral portion of the graduation display portion and a graduation display portion made of a light conductor with a graduation near the outer periphery to have a predetermined angle, and light is incident on the graduation display portion. The LED and the graduation display part have a substantially circular disk shape having a diameter smaller than that of the graduation display part, and are arranged so as to be rotatable relative to the graduation display part and are slit-shaped in a radial direction so as to guide light from the graduation display part. And a pointer board having a pointer that is cut out.

In the LED display device according to a fifth aspect of the present invention, the lower surface formed by making the thickness of the central portion thicker than the outer peripheral portion serves as a reflecting surface, and the width of the flat portion in the direction perpendicular to the thickness direction at the central portion rather than the outer peripheral portion. Is arranged at the inner peripheral part of the scale display part and a scale display part made of a light conductor with a scale near the outer periphery so as to have a predetermined angle, and light is incident on the scale display part. LED and a substantially circular plate having a diameter smaller than that of the graduation display portion, and are arranged so as to be rotatable relative to the graduation display portion, and are slit in the radial direction so as to guide light from the graduation display portion. And a pointer board having a pointer that is cut out like a circle.

According to a sixth aspect of the present invention, there is provided an LED display device comprising a piece of a light guide whose one end is thinner than the other end and whose lower surface is a reflecting surface, and whose plane perpendicular to the thickness direction is substantially rectangular. An LED which is disposed on one end side having a large thickness of the piece and which makes light enter each piece, wherein a plurality of the pieces are overlapped in a plane direction and an LED which makes light enter each piece. It corresponds.

According to a seventh aspect of the present invention, in addition to the configuration of the sixth aspect, the LED display device further comprises a control means for causing the LED facing the piece at a predetermined position to emit light according to the traveling speed.

According to an eighth aspect of the present invention, there is provided an LED display device in which the LED according to the sixth or seventh aspect has two or more colors.

According to a ninth aspect of the present invention, in an LED display device, a lower surface formed by making the central portion thinner than the outer peripheral portion serves as a reflecting surface, and the width of the flat portion in the direction perpendicular to the thickness direction at the central portion rather than the outer peripheral portion. Is arranged at the outer peripheral portion of the graduation display portion and a graduation display portion made of a light conductor with a graduation near the outer periphery to have a predetermined angle, and light is incident on the graduation display portion. A pointer having an LED and a substantially circular disk shape that is laid on the scale display portion so as to be rotatable relative to each other, and has a pointer that is cut out in a radial slit shape so as to guide light from the scale display portion. A disk, a rotation driving means for continuously rotating the pointer board in a fixed direction, and a control means for driving the LED to emit light when the pointer of the pointer board comes to a predetermined angle position to surface-emit the scale display portion. It is equipped with.

According to a tenth aspect of the present invention, in the LED display device, the lower surface formed by making the thickness of the central portion thicker than the outer peripheral portion serves as a reflecting surface, and the width of the flat portion in the direction perpendicular to the thickness direction at the central portion rather than the outer peripheral portion. Is arranged at the inner peripheral part of the scale display part and a scale display part made of a light conductor with a scale near the outer periphery so as to have a predetermined angle, and light is incident on the scale display part. LED and a substantially circular disc-shaped member that is placed so as to be rotatable relative to the scale display unit, and has a pointer that is cut out in a radial slit shape so as to guide light from the scale display unit. A pointer board, a rotation driving means for continuously rotating the pointer board in a fixed direction, and a control means for driving the LED to emit light when the pointer of the pointer board comes to a predetermined angle position so as to emit surface light from the scale display section. And is equipped with.

According to an eleventh aspect of the LED display device, a plurality of substantially annular light guides having different diameters are concentrically arranged in close contact with each other to form a substantially disc shape, and the respective light guides are independently guided. A light emitting board, an LED arranged to correspond to each light guide of the light emitting board, and an LED for making light incident on each light guide, and a substantially circular shape arranged so as to be rotatable relative to each other on the light emitting board. In the form of a plate, a slit disk having slits cut out in a radial direction so as to guide light from the light guide body, a rotation driving means for continuously rotating the slit disk in a certain direction, and a predetermined image, By controlling the light emission timing of the LED corresponding to the light guide, the predetermined light guide emits light when the slit of the slit board reaches a predetermined angle position, and the slit intersects with the light guide. The dot-shaped display is used for the part to be By combining the rotational and radial directions Tsu preparative plate in which and a control means for residual image displaying the predetermined image.

According to a twelfth aspect of the present invention, there is provided an LED display device in which the LED according to any one of the ninth to eleventh aspects has two or more colors.

[0025]

Embodiments of the present invention will be described below.

FIG. 1 shows an LED according to a first embodiment of the present invention.
It is a front view which shows the meter panel which has arrange | positioned the speedometer as a display apparatus. FIG. 2 is a plan view showing a speedometer as an LED display device according to the first embodiment of the present invention. FIG. 3 is an end view taken along the line AA of FIG. FIG. 4 is an enlarged partial plan view of an essential part of the speedometer of FIG.

In FIGS. 1 and 2, L of the present embodiment is shown.
The ED display device is applied to a vehicle meter, and is embodied in a meter panel 1 in which a speedometer, a tachometer, a fuel gauge, a water temperature gauge, etc. of an automobile are appropriately arranged.
It is embodied in an analog speedometer. This speedometer has an index portion 10 formed by stacking a plurality of radial pieces 11 at a predetermined position on the meter panel 1. A number indicating the speed as a speedometer is engraved around the index portion 10, and an LED 2 that emits a predetermined color is arranged therein. Further, in the case of implementing the present invention, the visible light LED 2 may be replaced with an LED that emits ultraviolet rays such as near ultraviolet rays, and the number indicating the speed may be colored with ultraviolet rays. The indicator portion 10 performs a display equivalent to the analog display shown by the tachometer 5 on the meter panel 1.

The radial piece 11 made of a light conductor such as an acrylic plate has a substantially trapezoidal cross section which becomes thinner toward the center (right end in FIG. 3). Further, on the back surface (lower surface in FIG. 3) of the radial piece 11, there is provided a reflecting surface 12 having a white surface coated. The reflecting surface 12 may be set to have a reflection angle so as to be totally reflected without coating the white surface. The radial pieces 11 are divided at regular intervals or at equal angles in the circumferential direction, and are combined on the front surface side of the index portion 10 to form a large number of planar elongated triangular pointers 13. In this embodiment, each pointer 13 has a speed of 10 km / h.
The scale for each speed display is divided into 5 and the speed is displayed every 2 km / h.

Further, each pointer 1 on the outer circumference of the radial piece 11
Red LED21 and green LE at the position facing 3
D22 and blue LED 23 are 1 each in the thickness direction.
Light is allowed to be incident on the radial pieces 11 of each pointer portion 13 arranged one by one. These red LEDs 21 and green LEDs are arranged one by one facing each pointer 13.
The LED unit 20 of the present embodiment is configured by the LED 22 and the blue LED 23, and the LEDs 31, 22, 23 of a predetermined color are selected and light emission is controlled by the control of the driver 31 (see FIG. 5) described later. The LED unit 20 emits light of a desired color and enters the corresponding radial piece 11 of the pointer 13. Then, as shown in FIG. 3, the light of the desired color incident from the LED unit 20 is guided to the radial piece 11 and travels from the outer peripheral surface side of the corresponding pointer 13 to the center side thereof, and is reflected by the reflective surface 12. The light is emitted to the front surface side and is visually recognized as light of a specific color by a driver or the like.

Further, as shown in FIG. 4, the LED units 20 are arranged facing each other corresponding to all the hands 13. Thereby, in the outer peripheral direction of the radial piece 11, the LEDs 21, 22, and 23 of each color of red, green, and blue are
The same number as the number of hands 13 will be arranged, and the red L
ED21 group, green LED22 group and blue LED23
Each group is composed. Then, as described above, each LED unit 20 is individually turned on to selectively cause one of the corresponding pointers 13 to emit light to display the speed (in FIG. 4, the pointer 13 at 50 km / h is turned on. display).

Next, the electrical configuration and operation of the vehicle meter as the LED display device of this embodiment will be described.

The control unit 35 of the control means for controlling the light emission,
CPU, ROM, RA constituting a microcomputer
It is composed of M etc. and is used for speed display control by the pointer 13. Further, the control unit 35 is provided to execute the main program shown in FIG. 6 as a part of the circuit shown in FIG. 5, for example.

FIG. 5 shows an LED according to the first embodiment of the present invention.
It is a block diagram showing the circuit composition of the whole meter for vehicles as a display. FIG. 6 shows L of the first embodiment of the present invention.
It is a flow chart which shows the whole operation of the meter for vehicles as an ED display.

In FIG. 5, the detection signal from the speed sensor 32 is input to the counter 34 of the control section 35 via the waveform shaping circuit 33 and counted in a unit of a predetermined time.
Then, the count value is stored in the storage circuit 36, and the record information is input to the driver 31, and the LEDs 31, 22, and 22 of each LED unit 20 by the driver 31.
It is used for light emission control of the 23th group.

In the present embodiment, the driver 3
1, speed sensor 32, waveform shaping circuit 33, control unit 3
A control unit is constituted by 5.

Next, the flowchart of FIG. 6 will be described.

First, in step S1, the speed sensor 32
When a rising edge of the signal from the vehicle is detected, a gate circuit (not shown) is opened in step S2 to convert the vehicle speed signal into the waveform shaping circuit 33.
To the counter 34, and counting by the counter 34 is started. Then, when the preset measurement time has elapsed in step S3, the gate circuit is closed in step S4, and the counting operation by the counter 34 is stopped. Next, in step S5, the count data V2 of the counter 34
And the stored data V1 which is the current display speed data are compared. Only when the difference V1-V2 between them is 2 km / h or more, the count data V2 is sent to the driver 31 in step S6. Based on this new count data V2, the driver 31 changes the speed display by the LED unit 20 in step S7. That is, in the speedometer, the LED unit 20 corresponding to the pointer 13 for displaying the immediately preceding traveling speed is turned off, the pointer 13 at the angular position corresponding to the traveling speed of the count data V2 is calculated, and the pointer 1
The LED unit 20 corresponding to No. 3 is newly driven to emit light. The emission color of the speed display LED unit 20 may be a single color of red, green or blue.
Any color obtained by mixing these may be used. Then, in step S8, the count data V2 is stored in the storage circuit 36.
The stored data is set to V1 as the stored data, the counter 34 is cleared by the control unit 35 in step S9, and the above operation is repeated.

The entire operation itself is performed by the driver 3
The control operation is the same as that of the conventional speedometer except for the display control of the pointer 13 using the LEDs 21, 22, and 23 by 1. In the control operation of the speed display, the LED unit 2 corresponding to the pointer 13 for speed display is used.
Although only 0 emits light and only the pointer 13 emits or lights in a predetermined color, in order to make the contrast between the entire indicator portion 10 and the pointer 13 during speed display more clear, all the LED units 20 are driven at speed. It is also possible to emit light in a color that balance-matches the color of the indicator 13 for display, for example, white, and keep the entire indicator portion 10 lit in that color. Furthermore,
Another control method may be used as long as a signal indicating the traveling speed can be input to the control unit 35. In addition, the LED unit 20 facing each pointer 13 is, as described above,
LED 21, 22, 23 of any one color without being composed of LEDs 21, 22, 23 of three colors of red, green and blue
You may comprise by. However, if the LED unit 20 is composed of two-color or three-color LEDs 21, 22, 23, various emission colors of the pointer 13 can be selected, and the design effect is increased.

Further, it is possible to input external information, for example, abnormality or alarm information, cause one of the LED units 20 to emit light according to the external information, and superimpose the information on the pointer 13. .

As described above, the LE of the first embodiment is
In a vehicle meter as a D display device, a lower surface formed by making a central portion thinner than an outer peripheral portion is used as a reflecting surface, and a width of the central portion is made narrower than the outer peripheral portion of a plane perpendicular to the thickness direction. Radial piece 11 made of a light guide having a predetermined angle, and LEDs 21, 22, 22 arranged on the outer periphery of radial piece 11 for making light incident on each radial piece.
An LED unit 20 composed of 23, a plurality of radial pieces 11 are stacked in a plane direction to form a predetermined angle,
In addition, the LEDs 21, which inject light into each radial piece,
It is provided with the indicator portion 10 corresponding to the LED unit 20 composed of 22 and 23, which can be the embodiment of claim 1.

Therefore, in the above embodiment, the light emitted from the LED unit 20 is incident on the corresponding radial piece 11 of the pointer 13, is guided from the radial piece 11 to the reflecting surface 12, and is reflected by the reflecting surface 12. The indicator 13 is reflected by the surface of the indicator portion 10 and causes the corresponding pointer 13 to emit light. At this time, the variable can be expressed by an area (angle) or can be a change only in the position. It is also possible to express only the change points by changing the color. Then, the driver can recognize the traveling speed by visually recognizing the pointer 13 which emits light at the predetermined angle position of the index portion 10. Therefore, the pointer and the drive mechanism for the pointer, which are the conventional mechanical components, are unnecessary. As a result, the LED display device can be applied to vehicle meters, reducing the conventional mechanical components,
Product quality such as durability, reliability, and display accuracy can be improved. Further, the depth dimension can be reduced by the amount of the pointer and the drive mechanism, the thickness can be reduced, the degree of freedom in design can be increased, and the distance from the driver's eye position can be increased.

Particularly, in the present embodiment, the LED 2 facing the radial piece 11 at a predetermined angular position according to the traveling speed.
It is provided with a control means for making 1, 22, 23 emit light, which can be the embodiment of claim 2. Therefore, when used as a speedometer, when the vehicle is traveling, the LED unit 20 facing the pointer 13 at a predetermined angular position emits light according to the traveling speed by the light emission control unit. The light emitted from the LED unit 20 is incident on the corresponding radial piece 11 of the pointer 13 and guided from the radial piece 11 to the reflecting surface 12,
It is reflected by the reflecting surface 12 to the surface of the indicator portion 10 and causes the corresponding pointer 13 to emit light. Then, the driver can recognize the traveling speed by visually recognizing the pointer 13 which emits light at the predetermined angle position of the index portion 10. Therefore, the pointer and the drive mechanism for the pointer, which are the conventional mechanical components, are unnecessary. As a result, it is possible to reduce conventional mechanical components and improve product quality such as durability, reliability, and display accuracy. Further, the depth dimension can be reduced by the amount of the pointer and the drive mechanism, the thickness can be reduced, the degree of freedom in design can be increased, and the distance from the driver's eye position can be increased.

Further, in the present embodiment, the radial piece 1
The LEDs 21, 22, and 23, which are arranged on the outer peripheral portion of 1 and which make light incident on each radial piece 11, have three primary colors of red, green, and blue. In this kind of embodiment, an arbitrary color can be expressed, and the variable can be expressed in detail by the color. In addition, a plurality of other pieces of information can be superimposed on the variable information.

In the present embodiment, the LEDs 21, 22, 23, which are arranged on the outer peripheral portion of the radial piece 11 and enter light into each radial piece 11, have three primary colors of red, green and blue. However, in the case of implementing the present invention, it is possible to use two or more colors, which can be the embodiment of claim 3. In this type of embodiment, the variable can be represented by any two colors. Also, other information can be superimposed on the variable information.

Further, the surface parallel to the thickness direction of the radial piece 11 can be coated with a reflection film on one surface or both surfaces. This allows the specific radial piece 1
Only 1 can be made to emit light clearly, and it can prevent that light bleeds. At this time, since the radial pieces 11 are continuously bonded, one reflective film may be formed, but both surfaces and the reflective surface 12 may be coated simultaneously. It should be noted that total reflection can be achieved by the refractive index without coating.

By the way, in the above-described embodiment, the indicator portion 1
Although 0 has a fan-shaped development of 240 degrees, it may be arranged linearly when the present invention is carried out. For example, if the radial piece 11 has a substantially rectangular shape when viewed from above, it can have a linear shape.

That is, the lower surface formed by making one end thinner than the thickness of the other end is the reflecting surface 12, and a piece made of a light guide having a substantially rectangular plane in a direction perpendicular to the thickness direction, and a thick piece of the piece. An LED unit 20 including LEDs 21, 22, and 23, which are arranged on one end side and enter light into each piece, is provided, and a plurality of the pieces are overlapped in a plane direction and light is entered into each piece. The LED unit 20 is made to correspond, and this can be made into the embodiment corresponding to claim 6.

In this type of embodiment as well, the same effects as those of the first embodiment can be obtained, and the variables can be expressed in a substantially linear form, and the changes can be expressed in a bar graph or the positions alone. can do.

As in the first embodiment, the LED 2 facing the piece at a predetermined position according to the traveling speed.
An embodiment may be provided which is provided with a control means for making 1, 22, 23 emit light, and this may also be an embodiment corresponding to claim 7.

Then, as in the first embodiment,
The LED arranged at the end of the piece and which makes the light incident on each piece may be an embodiment having two or more colors, and this may be an embodiment corresponding to claim 8. In this type of embodiment, the variable can be represented by any two colors. Also, other information can be superimposed on the variable information.

Further, as in the case of the first embodiment described above, the LEDs arranged on the outer peripheral portion of the piece and for making light incident on each piece have three primary colors of red, green and blue. You can also do it. In this kind of embodiment, an arbitrary color can be expressed, and the variable can be expressed in detail by the color.
In addition, a plurality of other pieces of information can be superimposed on the variable information.

Furthermore, as in the case of the first embodiment described above, an embodiment in which the surface parallel to the thickness direction of the piece is coated with a reflective film may be adopted.
As a result, only a specific piece can be made to emit light clearly and light can be prevented from bleeding.

Next, another embodiment according to the present invention will be described below. In each embodiment, only the differences from the first embodiment will be described, and the same components as those in the first embodiment will be denoted by the same reference numerals in the drawings, and description thereof will be omitted. .

FIG. 7 shows an LED according to the second embodiment of the present invention.
It is a top view showing a meter for vehicles as a display. FIG. 8 is a sectional view taken along line BB of FIG. 7.

In FIGS. 7 and 8, L of the present embodiment is shown.
A speedometer as a vehicle meter to which the ED display device is applied is one in which a circular pointer board 60 is superposed on a circular scale display section 50. The graduation display unit 50, like the index unit 10 of the first embodiment, includes a substantially disc-shaped light guide portion 51 made of an acrylic material or the like and a reflective surface 52 such as a white painted surface provided on the back surface thereof. A scale portion 53 having a speed display is formed on the outer peripheral portion of the surface of the light guide portion 51, and, of course, it is not necessary to provide the speed display to the meter panel 1 of the present embodiment. The scale display unit 50 is fixed so as not to rotate relative to the meter panel 1. On the other hand, on the outer peripheral surface of the light guide portion 51 of the pointer board 60, the LED units 20 of a predetermined color such as red, green, and blue are arranged so as to face each other, and light can enter the light guide portion 51. Cage, light guide 51
The light incident on is guided to the surface side of the pointer board 60 via the reflecting surface 52. The LED unit 20 is
A plurality of scale display portions 50 are arranged at predetermined intervals in the circumferential direction.

Further, the pointer board 60 has a scale display section 50.
It has a substantially circular disk shape with a smaller diameter, and is arranged concentrically on the scale display portion 50 so as to expose the scale portion 53. The pointer board 60 is made of a resin material or the like capable of blocking light, and is cut out in a slit shape at a predetermined angular position in the radial direction to serve as a pointer 61, and a portion other than the pointer 61 serves as an opaque light-shielding portion 63. The light of the LED unit 20 from the above is blocked by the light shielding portion 63, and is transmitted only from the pointer 61. Further, the center of the pointer board 60 is drive-coupled via a drive shaft 65 to a drive unit 71 arranged inside the automobile meter 1, and is rotatable with respect to the scale display unit 50. The drive unit 71 is configured to rotate the pointer board 60 via the drive shaft 65 by an amount according to the traveling speed of the vehicle under the control of the driver 81 described later. Regarding the type of color of the LED unit 20 and the total number of arranged LEDs, the entire scale display section 50 is made to emit light clearly, the scale section 53 is clearly displayed, and the light from the scale display section 50 is displayed on the pointer board 60. As long as the pointer 61 is sufficiently transmitted and the speed display by the pointer 61 is possible, it can be appropriately selected. Further, as in the first embodiment, the LEDs 21, 22, and 23 of different colors are arranged in the thickness direction of the scale display unit 50 to configure the LED unit 20, and the emission color of the scale display unit 50 can be changed variously. May be In this case, the design of the vehicle meter can be diversified,
The design effect is increased.

Next, the electrical configuration and operation of the vehicle meter as the LED display device of this embodiment will be described.

FIG. 9 shows an LED according to the second embodiment of the present invention.
It is a block diagram showing the circuit composition of the whole meter for vehicles as a display. FIG. 10 is a flowchart showing the overall operation of the vehicle meter as the LED display device according to the second embodiment of the present invention.

The vehicular meter as the LED display device of this embodiment has the same electrical structure as that of the first embodiment (see FIG. 5) as a whole. It operates according to a program similar to the program of the embodiment (see FIG. 6). On the other hand, in the first embodiment, the driver 3
By controlling the light emission of the LEDs 21, 22, and 23 group by 1, the pointer 13 is displaced to the angular position corresponding to the traveling speed to display the speed, whereas the vehicle meter of the second embodiment is As shown in FIG. 9 and FIG.
The driver 81 connected to the memory circuit 36 of FIG.
By controlling the rotation of 1, the pointer 61 is displaced to the angular position corresponding to the traveling speed and the speed is displayed.

That is, in FIG. 9, the vehicle meter as the LED display device of the second embodiment is a driver 81.
Is connected to the memory circuit 36, and the driver 81 is connected to the drive unit 71. Other configurations are the same as in the first embodiment. In this embodiment, the speed sensor 3
2, the waveform shaping circuit 33, the control unit 35, the drive unit 71, and the driver 81 constitute control means for controlling the rotation of the pointer board 60 with respect to the scale display unit 50.

Further, in FIG. 10, the vehicle meter as the LED display device of the second embodiment has a step S
After the counting operation by the counter 34 in 1 to S4,
In step S15, the count data V2 of the counter 34 and the stored data V1 which is the current display speed data.
And only when the difference V1-V2 between them is 1 km / h or more, the count data V2 is sent to the driver 81 in step S6.
Send. Based on this new count data V2, the driver 81 controls the rotation direction and the rotation amount of the drive unit 71 in step S17, controls the rotation of the pointer board 60, and sets the pointer 6
Change the speed display by 1. That is, the count data V
According to the traveling speed of 2, the angular position of the pointer 61 of the pointer board 60 with respect to the graduation portion 53 of the graduation display portion 50 is calculated, and the driving portion 7 is arranged so that the pointer 61 is positioned at the angular position.
1, the pointer board 60 is rotated via the drive shaft 65. Other operations are the same as those in the first embodiment. In the present embodiment, during the above operation, the LED unit 20 is constantly driven to emit light so that the scale display section 50 is always illuminated.

As described above, in the vehicle meter as the LED display device according to the second embodiment, the lower surface formed by making the thickness of the central portion thinner than the outer peripheral portion is the reflecting surface 52, and is a direction perpendicular to the thickness direction. The scale display section 50 made of a light guide in which the width of the central portion of the plane is narrower than that of the outer peripheral portion to have a predetermined angle and a scale portion 53 is provided near the outer peripheral portion, and the outer peripheral portion of the scale display portion 50. And the LED unit 20 which makes light incident on the graduation display section 50, and which has a substantially disk shape with a diameter smaller than that of the graduation display section 50, and is arranged so as to be rotatable relative to the graduation display section 50. And a pointer board 60 having a pointer 61 that is cut out in a slit shape in the radial direction so as to guide the light from the scale display section 50,
This can be the embodiment of claim 4.

Therefore, when the LED unit 20 is caused to emit light, the light emitted from the LED unit 20 is incident on the light guide portion 51 from the periphery of the scale display portion 50, enters the reflecting surface 52 from the light conductor portion 51, The reflection surface 52 reflects the light to the surface of the scale display unit 50. At this time, the pointer board 60 located on the front surface side of the scale display section 50 blocks light emission from the scale display section 50 except for the scale section 53 of the scale display section 50 and the pointer 61 of the pointer board 60. Therefore,
For the driver, the scale portion 53 of the scale display portion 50 and the pointer board 6
Only the pointer 61 of 0 is visually recognized. As a result, it is possible to display the pointer 61 by using the LED unit 20,
Due to the indicator 61 that emits light and the scale portion 53 that emits light on the outer peripheral portion of the scale display portion 50, a unique design effect can be exhibited.

In particular, the LED unit 20 is attached to the scale display section 5
Since it is arranged on the outer periphery of 0, the number of the arrangement can be increased and the brightness can be increased.

Further, the speed sensor 32, the waveform shaping circuit 33, the control section 35, the drive section 71 and the driver 81 are provided with a control means for controlling the rotation of the pointer board 60 with respect to the scale display section 50.

Therefore, in addition to the above effects, when the vehicle is traveling, the scale display section 50 and the pointer board 60 are relatively rotated by the control means at an angle according to the traveling speed, so that the pointer 61 in the light emitting state is scaled. An instruction is given to display the speed at a predetermined angular position on the scale portion 53 of the display unit 50. As a result, the driver emits light at a predetermined angular position of the scale portion 53 of the scale display portion 50 according to the traveling speed, and indicates the predetermined speed indicator 61.
Can be visually recognized, and the traveling speed can be recognized. As a result, by using the LED unit 20, the pointer 61
Can be displayed by light emission, and the indicator 61 that emits light and the scale portion 53 that emits light at the outer peripheral portion of the scale display portion 50 can exert a unique design effect.

In the present embodiment, the LED unit 20 is arranged on the outer peripheral portion of the scale display portion 50. However, in the case of implementing the present invention, an insertion hole is provided in the center portion of the scale display portion 50. Then, the LED unit 20 can be arranged on the inner peripheral portion of the scale display portion 50. At this time, the thickness of the scale display portion 50 is not shown, but is opposite to that of the present embodiment.

That is, when the reference numeral of the vehicle meter as the LED display device of the second embodiment is used, the lower surface formed by making the thickness of the central portion thicker than the outer peripheral portion serves as the reflecting surface 52, and the thickness direction in the thickness direction is set. A graduation display section 50 made of a light guide having a graduation section 53 in the vicinity of the outer peripheral portion with a narrower width in the central portion than in the outer peripheral portion of the plane in the perpendicular direction so as to have a predetermined angle.
And is arranged on the inner peripheral portion of the scale display unit 50, and the scale display unit 5
LED unit 20 which makes light enter 0 and scale display section 5
It has a substantially disk shape with a diameter smaller than 0, and is arranged so as to be rotatable relative to the scale display unit 50, and is cut out in a radial slit shape so as to guide light from the scale display unit 5. It is provided with a pointer board 60 having a pointer 61, which can be an embodiment of claim 5.

Therefore, when the LED unit 20 is caused to emit light, the light emitted from the LED unit 20 enters the light conductor portion 51 from the periphery of the scale display portion 50, enters the reflection surface 52 from the light conductor portion 51, The reflection surface 52 reflects the light to the surface of the scale display unit 50. At this time, the pointer board 60 located on the front surface side of the scale display section 50 blocks light emission from the scale display section 50 except for the scale section 53 of the scale display section 50 and the pointer 61 of the pointer board 60. Therefore,
For the driver, the scale portion 53 of the scale display portion 50 and the pointer board 6
Only the pointer 61 of 0 is visually recognized. As a result, it is possible to display the pointer 61 by using the LED unit 20,
Due to the indicator 61 that emits light and the scale portion 53 that emits light on the outer peripheral portion of the scale display portion 50, a unique design effect can be exhibited.

In particular, the LED unit 20 is attached to the scale display section 5
Since it is arranged on the inner circumference of 0, uniform brightness can be obtained even if the number of arranged pieces is reduced.

By the way, in the second embodiment, the driving unit 71 is connected to the pointer board 60 so as to be rotatable with respect to the scale display unit 50. However, the driving unit 71 is attached to the scale display unit 50. May be connected to be rotatable with respect to the pointer board 60. In this case, if the pointer 61 of the pointer board 60 is fixed at the vertical position on the meter panel 1, the driver can always see the pointer 61 at the same position,
The traveling speed can be confirmed easily and surely. That is, according to the present invention, the scale display unit 50 and the pointer board 60 may be rotated relative to each other, and the pointer 61 may instruct the scale unit 53 to display a predetermined speed.

Furthermore, the present invention may be embodied in other instruments such as a tachometer, etc., in addition to the speedometer. Further, the electrical configuration of the present invention and its control program are not limited to those in the above embodiment. In addition, although the resolution of the pointer 13 in the first embodiment is set to 2 km / h, the resolution of the pointer 13 is set to 1 km / h in accordance with the dimensions of the LEDs 21, 22, 23 and the light emission characteristics. Alternatively, it may be set every 3 km / h or more.

FIG. 11 shows LE of the third embodiment of the present invention.
It is a top view which shows the meter for vehicles as a D display device.
FIG. 12 is a sectional view taken along line CC of FIG. 11 showing the LED display device according to the third embodiment of the present invention together with the electrical configuration.

In FIG. 11, the LED display device of the present embodiment is embodied as a speedometer of an automobile as a vehicle meter, like the second embodiment, and has the same external appearance as the second embodiment. Have. That is, the speedometer according to the present embodiment includes the same scale display portion 50 as the second embodiment, the pointer board 60, and the LED unit 20 including the LEDs 21, 22, and 23 of different colors. On the other hand, in the speedometer of the second embodiment, the pointer 71 is rotated clockwise or counterclockwise by the drive unit 71 via the drive shaft 65, and the pointer 61 is stopped at a predetermined angular position. On the other hand, the speedometer according to the present embodiment has a drive unit 91 as a rotation drive unit including a motor.
Thus, the pointer board 60 is always continuously rotated at a high speed in a fixed direction (for example, clockwise direction) via the drive shaft 65.

Further, as shown in FIG. 12, in this embodiment, the disk 96 with slits of the rotary encoder 95 is fixed to the drive shaft 65, and the rotary encoder 95 is used.
The photo interrupter 97 is connected to the control unit 101. Then, the rotary encoder 95 detects the rotational angle position of the pointer 61 of the pointer board 60 via the drive shaft 65 and inputs it to the control unit 101. Further, the control unit 101 is the control unit 3 of the second embodiment.
Similar to 5, the vehicle speed signal from the speed sensor 32 (see FIG. 9) is input through the waveform shaping circuit 33 to calculate the current vehicle speed. In addition, the control unit 101 includes a driver 31 (see FIG. 5) for driving the LED unit 20 according to the first embodiment.
An LED driver 102 having the same configuration as the above is connected, and based on the vehicle speed signal from the waveform shaping circuit 33 and the signal indicating the angular position of the pointer 61 of the pointer board 60 from the rotary encoder 95, the LED unit is passed through the LED driver 102. The lighting of 20 is controlled. That is, the control unit 101 controls the LED unit 20 each time the pointer 61 of the continuously rotating pointer board 60 reaches the scale position of the scale unit 53 indicating the current vehicle speed.
Is instantaneously turned on to cause the scale display section 50 to emit surface light, and at other scale positions, the LED unit 20 is turned off to turn off the scale display section 50. In addition,
A motor driver 103 is connected to the control unit 101, and the drive unit 91 is rotationally driven at a high speed in the above-mentioned fixed direction via the motor driver 103.

Next, the operation of the vehicle meter as the LED display device of this embodiment will be described.

FIG. 13 shows LE of the third embodiment of the present invention.
It is a flow chart which shows operation of the meter for vehicles as a D display.

As shown in FIG. 13, the control unit 101 of the present embodiment, in step S21, the waveform shaping circuit 3
Based on the vehicle speed signal from 2, the vehicle speed calculation similar to that of the first embodiment is performed (see steps S1 to S4 in FIG. 6), and the scale position of the scale portion 53 of the scale display portion 50 corresponding to the current vehicle speed, That is, the display angle position of the vehicle speed to be displayed is calculated by the pointer 61 of the pointer board 60. Further, the control unit 101
The drive section 91 is driven by the motor driver 103 to rotate the pointer board 60 at a high speed in a fixed direction (clockwise direction), while at the same time, in step S22, the rotary encoder 95 is rotated.
Is input, and it is determined in step S23 whether or not the high-speed rotating pointer 61 is at the display angle position calculated in step S21. When it is determined that the pointer 61 is located at the display angle position, the LED is displayed in step S24.
The unit 20 emits light and the scale display section 50 emits surface light.

As a result, the light guide section 5 of the scale display section 50 is
LED unit 20 which is incident on the first beam and reflected by the reflection surface 52
Light is emitted to the surface side of the pointer board 60 via the slit-shaped pointer 61, and the scale position of the scale portion 53 corresponding to the current vehicle speed (hereinafter referred to as the vehicle speed display position) is lit and displayed. The pointer board 60 always rotates at a high speed in a fixed direction, and the pointer 6
Since 1 is located at the vehicle speed display position for each rotation cycle, the control unit 101 turns on the LED unit 20 in synchronization with the rotation cycle of the pointer 61, and surface-illuminates the scale display unit 50 for each vehicle speed display position. The vehicle speed display position is illuminated and displayed. Also,
At a position other than the vehicle speed display position, the control unit 101 sets L
The on / off operation of the LED unit 20 by the LED driver 102 is controlled so that the ED unit 20 is turned off and the scale display section 50 is turned off. At this time, theoretically, the lighting display of the pointer 61 by the LED unit 20 is
It is a blinking display that is performed every time the pointer 61 comes to the vehicle speed display position, but the pointer 61 appears to stop at the vehicle speed display position due to the afterimage effect because it rotates at a high speed. That is, by increasing the blinking frequency of the pointer 61 to be equal to or higher than the critical fusion frequency, the pointer 61 is visually recognized in the state where it is set at the vehicle speed display position due to the afterimage effect. Therefore, it is preferable that the rotation speed of the pointer 61 is set such that the blinking frequency is equal to or higher than the critical fusion frequency and the blinking light is visually recognized as a lighting state.

When the vehicle speed is increased or decreased, the LED driver 102 is used by the LED driver 102 to increase or decrease.
The lighting timing of is shifted. For example, when the vehicle speed increases by 1 km / h, the lighting timing of the LED unit 20 is set to 1 km.
Delay by / h minutes. On the contrary, when the vehicle speed decreases by 1 km / h, the lighting timing of the LED unit 20 is advanced by 1 km / h. Even when the increase / decrease in vehicle speed is 2 km / h or more, the lighting timing of the LED unit 20 is shifted by the increase / decrease in the same manner as above. To increase or decrease this lighting timing, the pointer 61
It may be performed for each rotation, or may be performed for a plurality of rotations. However, if the number of rotations of the pointer 61 with respect to the increase / decrease of the vehicle speed by 1 km / h is increased, the display of the vehicle speed by the pointer 61 seems to move more smoothly, which is preferable in terms of design.

As described above, in the vehicle meter as the LED display device according to the third embodiment, the lower surface formed by making the central portion thinner than the outer peripheral portion serves as the reflecting surface 52, and is in a direction perpendicular to the thickness direction. A graduation display section 50 comprising a light guide section 51 having a graduation section 53 in the vicinity of the outer peripheral portion of the flat surface, the width of the central portion of which is narrower than that of the outer peripheral portion thereof so as to have a predetermined angle.
The LED unit 20 is disposed on the outer peripheral portion of the scale display unit 50 and allows light to enter the scale display unit 50, and has a substantially disc shape that is concentrically overlapped with the scale display unit 50.
Arranged so as to be rotatable relative to the scale display section 50,
A pointer board 60 having a pointer 61 which is cut out in a radial slit shape so as to guide light from the scale display section 50.
And a drive unit 91 and a motor driver 103 as rotation drive means for continuously rotating the pointer board 60 in a fixed direction,
A speed sensor 32, a waveform shaping circuit 33, and a rotary encoder 95 as control means for driving the LED unit 20 to emit light to emit light from the scale display section 50 only when the pointer 61 of the pointer board 60 is positioned at a predetermined angle position. ,
The control unit 101 and the LED driver 102 are provided.

Therefore, the control section 101 causes the drive section 91 to continuously rotate the pointer board 60 in a fixed direction via the motor driver 103. Further, the control unit 101 causes the pointer 61 to be at a predetermined angular position (in the above-described embodiment, the vehicle speed display position)
The LED driver 102 turns on the LED unit 20 to emit light, and the LED unit 20 turns off at other angular positions. Then, when the LED unit 20 emits light due to the ON operation, the light emitted from the LED unit 20 is incident on the light conductor portion 51 from around the scale display portion 50, enters the reflection surface 52 from the light conductor portion 51, and is reflected. The surface 52 reflects the light to the surface of the scale display unit 50. At this time, the pointer board 60 located on the front surface side of the scale display section 50 blocks light emission from the scale display section 50 except for the scale section 53 of the scale display section 50 and the pointer 61 of the pointer board 60. Therefore, the driver can visually recognize only the scale portion 53 of the scale display portion 50 and the pointer 61 of the pointer board 60.

As a result, it is possible to use the LED unit 20 to cause the pointer 61 to emit light only at a predetermined angular position (vehicle speed display position), and the pointer 61 and the scale display section 5 that emit light.
The scale portion 53 which emits light at the outer peripheral portion of 0 can exhibit a unique design effect. Especially, LED unit 2
Since 0 is arranged on the outer periphery of the scale display unit 50, the number of the arranged units can be increased and the brightness can be increased.

Further, since the pointer 61 of the pointer board 60 is rotated in a fixed direction by the control unit 101 of the control means and the LED unit 20 emits light at a predetermined angular position (vehicle speed display position), the user (driver) ) Indicates the indicator 61 indicating a predetermined variable amount by emitting light at a predetermined angular position (vehicle speed display position) of the scale portion 53 of the scale display unit 50 according to the variable amount (vehicle speed).
Can be seen. As a result, the LED unit 2
The pointer 61 can be used to emit light by using 0, and the indicator 61 that emits light and the scale portion 53 that emits light at the outer peripheral portion of the scale display portion 50 can exert a unique design effect.

In particular, in this embodiment, since the pointer board 60 is rotated in a fixed direction, it is not necessary to rotate it in both forward and reverse directions as in the second embodiment, and the drive unit 91 can be a simple DC motor or the like. It can be configured. Further, since the LED unit 20 has a good responsiveness, the pointer 61
Emits light exactly when it reaches a predetermined angle position, and there is no error in the variable display.

By the way, in the third embodiment, L
The ED unit 20 is configured to illuminate and display only when the pointer 61 comes to the vehicle speed display position. However, the controller is configured to display the zone continuously from a position before the vehicle speed display position by a predetermined angle to the vehicle speed display position. LED by 101
The light emission timing of the unit 20 may be controlled. In this case, the control unit 101 sets the LE level so that the zone display becomes gradually brighter toward the vehicle speed display position and becomes the brightest at the vehicle speed display position.
The light amount of the D unit 20 may be controlled. Further, in the above-described embodiment, the LED unit 20 is composed of LEDs of different colors, for example, red, green and blue LEDs 21, 22 and 23 as in the second embodiment, so that the pointer can be set in any color. It is possible to display 61 and the scale portion 53 in a light emitting manner.

Further, in the present embodiment, since the graduation display section 50 composed of the light guide section 52 has a larger diameter than the pointer board 60 and the graduation section 53 is provided on the outer peripheral portion thereof, the graduation section 53 is also an LED.
The display is blinking according to the lighting timing of the unit 20. However, in the present embodiment, instead of a disc-shaped light guide portion having the same or smaller diameter as the pointer disc 60 of the graduation display portion 50 and the thickness decreasing from the outer circumference to the inner circumference, It is also possible to use a scale portion for displaying a variable such as speed at the outer peripheral position of the pointer board 60. In this case, if the scale portion is illuminated by a separate light source and only the scale portion is continuously turned on, it is possible to make the visual recognition of the user such as a driver easier. Further, in this embodiment, as in another example of the second embodiment, the graduation display portion has a tapered cross-section whose thickness decreases from the inner circumference to the outer circumference, and the LED unit 20 is graduated. You may arrange | position on the inner peripheral side of a part. In this case, uniform brightness can be achieved even if the number of LED units 20 provided is reduced.

FIG. 14 is an LE according to the fourth embodiment of the present invention.
It is a top view which shows the meter for vehicles as a D display device.
FIG. 15 is a sectional view taken along line DD of FIG. 14 showing the LED display device according to the fourth embodiment of the present invention together with the electrical configuration.

In FIG. 14, the LED display device of this embodiment can be embodied as an automobile speedometer as a vehicle meter, as in the third embodiment.
It can also be embodied as a general-purpose display device. That is, the LED display device of the present embodiment is configured by concentrically overlapping the slit board 120 having the same configuration as the pointer board 60 of the second or third embodiment on the light emitting board 110. . The light emitting board 110 includes light guides 111a, 111b, 111c, which are substantially annular (doughnut-shaped) having different diameters.
111d, 111e, 111f, 111g, 111h,
A plurality of (10) 111i and 111j are concentrically arranged in close contact with each other to form a substantially disk shape having a hole in the center. An inner peripheral surface of the innermost light guide body 111a, an outer peripheral surface of the outermost light guide body 111j, and a boundary surface between adjacent light guide bodies 111a to 111j,
And LEDs on the bottom surface of each light guide 111a-111j.
A reflection surface that reflects light (only the reflection surface 112 on the lower surface is shown) is provided on most of the portion other than the portion where the unit 20 is located by metal vapor deposition or white plating, and each light guide 111
a to 111j are configured to be light guide independent of each other. In addition, each of the light guides 111a to 11a of the light emitting board 110.
1j LED corresponding to the second or third embodiment
The unit 20 is provided, and the light guides 111a to 11a are provided.
Light is allowed to enter 1j.

Specifically, each of the light guides 111a to 111j.
The plurality of LED units 20 are arranged at predetermined intervals at predetermined circumferential positions on the lower surface side of the light guides 111a to 111a.
Light is incident in the thickness direction of j. Then, on the lower surface of each of the light guides 111a to 111j, each LE is attached.
Only at the position where the D unit 20 is arranged, the reflection surface 11
2 is not provided, the light of the LED unit 20 is guided by the light guide 111a.
˜111j. In addition, each light guide 111 corresponding to the light emitted upward by the LED unit 20.
Reflecting means is provided which is deflected and guided in the circumferential direction of a to 111j.

In the present embodiment, the light guides 111a-111a.
The entire lower surface of 111j is a translucent surface without the reflection surface 112, and a large number of LED units 20 are arranged in the circumferential direction of each light guide body 111a to 111j. It may be configured to light up. In this case, the reflecting surface is provided only on the inner peripheral surface of the innermost light guide body 111a, the outer peripheral surface of the outermost light guide body 111j, and the boundary surface between the adjacent light guide bodies 111a to 111j. That is, in the present embodiment, each light guide 1 is made up of LEDs.
It is sufficient if all of 11a to 111j can be illuminated uniformly.

On the other hand, the slit board 120 is the light emitting board 1
10 has a substantially disk shape that is concentrically superposed, and is similar to the pointer board 60 of the second or third embodiment.
0 is arranged so as to be rotatable relative to
slits 1 in the radial direction to guide light from a to 111j.
21 is cut out, and a portion other than the slit 121 is used as a light blocking portion 123 that blocks light. The diameter of the slit board 120 is set to be slightly larger than the diameter of the light emitting board 110, and the slit 121 is located at the innermost circumference of the light emitting board 110.
11a to the outermost light guide 111j. Similar to the third embodiment, the slit board 120 is drivingly connected to a driving unit 91 as a rotary driving unit composed of a DC motor or the like via a driving shaft 65, and the driving unit 91 constantly drives in a fixed direction (in FIG. 14). Clockwise) is designed to rotate continuously at high speed. Although not shown,
On the outer circumference of the light emitting board 110 or the slit board 120, a scale portion having a number corresponding to the vehicle speed for displaying the vehicle speed is provided, and the vehicle speed can be displayed by the slit 121 of the slit board 120.

On the other hand, in this embodiment, by the control means,
The LED unit 20 corresponding to the light guides 111a to 111j according to predetermined image data (image data).
Slit board 1 by controlling the light emission timing of
When the slit 121 of 20 comes to a predetermined angle position, the predetermined light guides 111a to 111j emit light, and the slit 12
1 and the light guides 111a to 111j intersect at a dot-shaped display, and the dot-shaped display is used as the slit board 120.
The predetermined image is displayed as an afterimage by combining in the rotational direction and the radial direction. It should be noted that the image mentioned here naturally includes linear display such as in the case of speed display. That is, as shown in FIG. 15, in the present embodiment, the disk 96 with slits of the rotary encoder 95 is fixed to the drive shaft 65, and the rotary encoder 9 is used.
The photo interrupter 97 of No. 5 is connected to the control unit 131. Then, the rotary encoder 95 detects the rotational angle position of the slit 121 of the slit board 120 via the drive shaft 65 and inputs it to the control unit 131.

Further, the control unit 131 inputs the vehicle speed signal from the speed sensor 32 (see FIG. 9) via the waveform shaping circuit 33, similarly to the control unit 35 of the second embodiment, and the current vehicle speed is obtained. Is calculated. In addition, the control unit 131
The ED driver array 132 is connected to the LED driver array 132 based on the vehicle speed signal from the waveform shaping circuit 33, the signal indicating the angular position of the slit 121 of the slit board 120 from the rotary encoder 95, and the image data.
The LED units 20 of the light guides 111a to 111j are individually controlled to be lit via the. That is, the control unit 131 controls the light emission of the LED unit 20 through the LED driver array 132 based on the vehicle speed signal and the angular position signal of the pointer 61, and controls the light emission of the LED unit 20. The speed is displayed. On the other hand, the control unit 131
Displays an image based on the image data and the angular position signal of the slit 121.

Specifically, in the case of displaying the vehicle speed, the control unit 13
1 is the slit 1 of the slit disk 120 that rotates continuously.
Every time 21 comes to the angular position indicating the current vehicle speed, the LED units 20 of all the light guides 111a to 111j are momentarily turned on to surface-emit the light emitting panel 110, and at other angular positions, the LEDs are emitted. The unit 20 is turned off to turn off the light emitting board 110. On the other hand, in the case of image display, the control unit 131, when the slit 121 is located at a predetermined coordinate position on the light emitting panel 110, according to the image to be displayed, the L of the corresponding light guides 111a to 111j.
The ED unit 20 emits light.

The control unit 1 is the same as in the third embodiment.
A motor driver 103 is connected to 31, and the drive unit 91 is rotationally driven at a high speed in the certain direction via the motor driver 103.

Next, the operation of the vehicle meter as the LED display device of the present embodiment will be described.

FIG. 16 shows an LE according to the fourth embodiment of the present invention.
It is a flow chart which shows operation of the meter for vehicles as a D display.

First, the control unit 131 of the present embodiment performs the processing for displaying the vehicle speed in the same manner as the third embodiment. That is, in step S21, the waveform shaping circuit 3
The vehicle speed calculation similar to that of the first embodiment is performed based on the vehicle speed signal from S2 (see steps S1 to S4 in FIG. 6), and the angular position of the light emitting board 110 corresponding to the current vehicle speed, that is, the slit board 120. The display angular position of the vehicle speed to be displayed is calculated by the slit 121, and the calculated display angular position is converted into display data (r, θ) indicating the coordinates on the light emitting board 110 in step S31. In this display data, r indicates a coordinate position in the radial direction, and the light guide 111a
The number corresponding to the number of ~ 111j is the radial position r
Can be selected as. Further, θ indicates a coordinate position in the circumferential direction, and any position in the circumferential direction of each of the light guides 111a to 111j can be continuously selected as the circumferential position θ. In the case of the vehicle speed display, since light emission from the light guides 111a to 111j is performed over the entire length of the slit 121, all the light guides 111a to 111j are always selected as the radial position r. . As the circumferential position θ, the same angular position is selected for all the light guides 111a to 111j with respect to one vehicle speed display position.

On the other hand, in the case of image display, step S
In 32, the image data of the desired image to be displayed is displayed as the display data (r,
θ). That is, the radial position r and the circumferential position θ on the light emitting board 110 are determined according to the image to be displayed. At the same time, the control unit 131 controls the light guide 111 by the LED unit 20 at the coordinate position.
The emission colors of a to 111j may also be determined and full color display may be performed.

After that, the control section 131 proceeds to step S33.
Then, the display content of the LED display device is selected by external input or the like, and either the speed display or the image display is selected. As the external input, for example, the LED display device may be programmed to automatically switch from the speedometer to the warning display when the warning indicator lamp is turned on. On the other hand, the control unit 131 drives the driving unit 91 by the motor driver 103 to rotate the slit board 120 at a high speed in a fixed direction (clockwise direction), while in Step S2.
At 2, the output signal of the rotary encoder 95 is input and the current rotational angle position of the slit 121 is monitored. Then, according to the display content selected in step S33, based on the output signal of the rotary encoder 95,
LEDs of the LED driver array 132 in step S34
Determine the drive signal. That is, in the case of speed display, the LED drive signal indicating which LED unit 20 is to be driven at which timing is determined by the LED driver array 132 based on the display data (r, θ) for speed display. In the case of image display, the LED driver array 1 is based on the display data (r, θ) for image display.
32 determines an LED drive signal indicating which LED unit 20 is driven at which timing.
Then, based on the LED drive signal, when the slit 121 reaches the coordinate position, that is, the display data position, the slit 121 is synchronized with the coordinate position, and the corresponding light guides 111a to 111a-1.
The LED unit 20 for 11j light emission is emitted in a predetermined color, and the light guides 111a to 111j are turned on in the predetermined color. The LED unit 20 is turned off at positions other than the coordinate position. This allows the slit 1 to rotate at high speed.
Light of a predetermined color is emitted at a predetermined coordinate position of each of the light guides 111a to 111j via 21. Due to the afterimage effect similar to that of the third embodiment, in addition to the speed display, desired characters such as characters and pictures are displayed. Images can be displayed.

As described above, in the LED display device of the fourth embodiment, the substantially light guide members 111a to 11 having different diameters are formed.
A plurality of 1j are arranged concentrically in close contact with each other to form a substantially disc shape, and
A light emitting board 110 in which the light guides 111a to 111j are independent from each other in a light guiding manner, and light guides 111a to 1 of the light emitting board 110.
11j, each of the light guides 111a to 111a.
The LED unit 20 that makes light incident on the light source 11j and the light emitting plate 110 have a substantially disk shape that is concentrically overlapped with each other. The LED unit 20 is arranged so as to be rotatable relative to the light emitting plate 110. A slit disk 120 having slits 121 cut out in the radial direction so as to guide light from 111j; a drive unit 91 and a motor driver 103 as rotation driving means for continuously rotating the slit disk 120 in a fixed direction;
The slits 121 of the slit board 120 are controlled by controlling the light emission timings of the LED units 20 corresponding to the light guides 111a to 111j according to a predetermined image.
When a predetermined angle position is reached, the predetermined light guides 111a to 111a-1
11j emits light, and the slit 121 and the light guide 1
A portion where 11a to 111j intersect is formed into a dot-like display, and the dot-like display is combined with the rotation direction and the radial direction of the slit disk 120 to thereby display the afterimage of the predetermined image.
2, a waveform shaping circuit 33, a rotary encoder 95, a control unit 131, and an LED driver array 132.

Therefore, the LED display device of this embodiment can be used as a speedometer for displaying the vehicle speed by collectively controlling the light guides 111a to 111j, as in the third embodiment. The same effect is exhibited by the same action. Further, in the LED display device of the present embodiment, the control unit 131 controls the light emission timing of the LED unit 20 corresponding to the light guides 111a to 111j according to the image to be displayed (speed display or image display). When the slit 121 of the slit board 120 comes to a predetermined angle position, the predetermined light guides 111a to 111j emit light, and the light guides 111a to 111j are turned on. Therefore, the LED unit 120 emits light through the slit 121 at the coordinate position of the light emitting board 110 corresponding to the image,
The image can be displayed by light emission due to the afterimage effect.
At this time, the display in the circumferential direction of the light guides 111a to 111j becomes continuous display as the slit 121 moves,
The display is smoother than that of the dot matrix display. As a result, a desired image can be displayed using the LED unit and the image quality can be improved.

The slit 1 of the slit board 120 is
The width of 21 is preferably as small as possible from the viewpoint of improving the image quality. In addition, it is preferable that the width of the light guide body is as small as possible from the viewpoint of improving the image quality, and as the number of light guide bodies is increased, a wide variety of images can be expressed.

[0105]

As described above, in the LED display device according to the first aspect, the lower surface formed by making the thickness of the central portion thinner than the outer peripheral portion serves as a reflecting surface, and the outer peripheral portion of the plane perpendicular to the thickness direction. The LED which makes the predetermined angle by superposing a plurality of radial pieces made of a light guide whose width is narrower in the central part and which has a predetermined angle corresponds to each radial piece. Then, by causing a predetermined radial piece to emit light, it is possible to indicate the variable quantity by its angular position.

Therefore, when embodied in a vehicle meter, the LED facing the pointer at a predetermined angular position emits light,
The light emitted from the LED enters the light guide of the corresponding pointer, is guided from the light guide to the reflecting surface, is reflected by the reflecting surface to the surface of the indicator, and causes the corresponding pointer to emit light. The traveling speed can be recognized by visually recognizing the pointer that emits light at such a predetermined angle position.
Therefore, the pointer and the drive mechanism for the pointer, which are the conventional mechanical components, are unnecessary. As a result, it can be applied to a vehicular meter, the number of conventional mechanical components can be reduced, and the product quality such as durability, reliability, and display accuracy can be improved. Further, the depth dimension can be reduced by the amount of the pointer and the drive mechanism, the thickness can be reduced, the degree of freedom in design can be increased, and the distance from the driver's eye position can be increased.

In the LED display device according to the second aspect, the control unit causes the LED facing the radial piece at the predetermined angular position to emit light according to the traveling speed, and is used as a speedometer.

Therefore, in addition to the effects of the first aspect, when used as a speedometer, the light emitted from the LED is incident on the radial piece of the corresponding pointer by the control means for controlling the light emission while the vehicle is traveling. Since the corresponding pointer is made to emit light, the driver can recognize the traveling speed by visually recognizing the pointer that emits light at the predetermined angular position of the index. Therefore, the pointer and the drive mechanism for the pointer, which are the conventional mechanical components, are unnecessary. As a result, it is possible to reduce conventional mechanical components and improve product quality such as durability, reliability, and display accuracy. Further, the depth dimension can be reduced by the amount of the pointer and the drive mechanism, the thickness can be reduced, the degree of freedom in design can be increased, and the distance from the driver's eye position can be increased.

In the vehicle meter of the third aspect, the LEDs have two or more colors, and the vehicle speed information or other information is expressed by color. Therefore, in addition to the effects of claim 1 and claim 2, the variable can be expressed by any two colors. Also, other information can be superimposed on the variable information.

According to another aspect of the vehicle meter of the present invention, the lower surface of which the central portion is thinner than the outer peripheral portion is used as a reflecting surface, and the width of the central portion of the plane perpendicular to the thickness direction is larger than the central portion. An LED for irradiating light to the outer peripheral portion of the graduation display portion is provided for the graduation display portion made of a light guide which is narrowed to have a predetermined angle and has a graduation near the outer periphery. A pointer disk made of a substantially circular disk having a diameter smaller than that of the graduation display section is superposed on the graduation display section so as to be rotatable relative to the graduation display section, and the light of the graduation display section is lit by the pointer notched in the slit shape of the pointer board. Derive and indicate the variable by its angular position.

Therefore, when embodied in a vehicle meter, when an LED is caused to emit light, the light emitted from the LED enters the light guide from around the index and is guided from the light guide to the reflecting surface. The reflective surface reflects the surface of the index portion. At this time, the light-shielding plate located on the front surface side of the index blocks light emission from the index except for the indicator of the index and the indicator of the light-shielding plate. Only the pointer is visible. Further, since the index and the light shielding plate are rotated relative to each other, the pointer in the light emitting state instructs the speed display at the predetermined angular position of the graduation portion of the index. As a result, the driver can visually recognize the pointer that indicates the predetermined speed by emitting light at a predetermined angular position on the scale portion of the index. As a result, it is possible to use the LED to display the pointer by light emission, and a unique design effect can be exhibited by the light emitting pointer and the scale portion that emits light at the outer peripheral portion of the index.

According to another aspect of the LED display device of the present invention, the lower surface formed by making the thickness of the central portion thicker than the outer peripheral portion is a reflecting surface, and the width of the central portion of the plane perpendicular to the thickness direction is larger than the central portion of the outer peripheral portion. For a graduation display part made of a light guide that is narrowed to have a predetermined angle and has a graduation near the outer circumference part, an LED that allows light to enter the inner circumference part of the graduation display part is arranged, and further, A pointer disk made of a substantially circular disk having a diameter smaller than that of the graduation display section is rotatably laid on the graduation display section, and the light of the graduation display section is lit by a pointer notched in the slit shape of the pointer board. Is derived and the variable is indicated by the angular position.

Therefore, when embodied in a vehicle meter, when the LED is caused to emit light, the light emitted from the LED is incident on the light guide from approximately the center of the index and is guided from the light guide to the reflecting surface. , Is reflected by the reflecting surface to the surface of the indicator portion. At this time, the light-shielding plate located on the front surface side of the index blocks light emission from the index except for the indicator of the index and the indicator of the light-shielding plate. Only the pointer is visible. Further, when the vehicle is traveling, the indicator and the light shielding plate are relatively rotated by the rotation control means at an angle according to the traveling speed, so that the pointer in the light emitting state indicates the speed at a predetermined angular position of the scale portion of the indicator. To do. Accordingly, the driver can visually recognize the pointer indicating the predetermined speed display by emitting light at a predetermined angular position of the scale portion of the index according to the traveling speed, and can recognize the traveling speed. As a result, it is possible to use the LED to display the pointer by light emission, and a unique design effect can be exhibited by the light emitting pointer and the scale portion that emits light at the outer peripheral portion of the index.

According to a sixth aspect of the LED display device of the present invention, a piece made of a light guide whose one end is thinner than the thickness of the other end and whose lower surface is a reflecting surface and whose plane perpendicular to the thickness direction is substantially rectangular is formed in a plane direction. It is possible to indicate a variable by the position of a plurality of LEDs, which are overlapped with each other, and LEDs which make light incident on each piece are associated with each other, and a predetermined piece is caused to emit light.

Therefore, when embodied in a vehicle meter, the LED facing the pointer at a predetermined position emits light and the LE
The light emitted from D enters the light guide of the corresponding pointer, is guided from the light guide to the reflecting surface, is reflected by the reflecting surface to the surface of the indicator, and causes the corresponding pointer to emit light. Since the pointer that emits light can be visually recognized at such a predetermined position, the pointer and the driving mechanism for the pointer, which are the conventional mechanical components, are unnecessary. As a result, it is possible to reduce conventional mechanical components and improve product quality such as durability, reliability, and display accuracy. Further, the depth dimension can be reduced by the amount of the pointer and the drive mechanism, the thickness can be reduced, the degree of freedom in design can be increased, and the distance from the driver's eye position can be increased.

In the LED display device according to the seventh aspect, the control means causes the LED facing the piece at a predetermined position to emit light according to the traveling speed and is used as a speedometer.

Therefore, in addition to the effects of the sixth aspect, when used as a speedometer, the light emitted from the LED is made incident on the corresponding pointer piece by the control means for controlling the light emission while the vehicle is traveling. Since the corresponding pointer is made to emit light, the driver can recognize the traveling speed by visually recognizing the pointer that emits light at a predetermined position of the index. Therefore, the pointer and the drive mechanism for the pointer, which are the conventional mechanical components, are unnecessary. As a result, it is possible to reduce conventional mechanical components and improve product quality such as durability, reliability, and display accuracy. Further, the depth dimension can be reduced by the amount of the pointer and the drive mechanism, the thickness can be reduced, the degree of freedom in design can be increased, and the distance from the driver's eye position can be increased.

The LED display device according to claim 8 has two LEDs.
More than the color, vehicle speed information or other information is expressed by color. Therefore, in addition to the effect of claim 6 or claim 7, the variable can be expressed by two arbitrary colors, and other information can be superimposed on the variable information.

According to a ninth aspect of the present invention, in the LED display device, the lower surface formed by making the thickness of the central portion thinner than that of the outer peripheral portion serves as a reflecting surface, and the width of the central portion of the plane perpendicular to the thickness direction is greater than that of the outer peripheral portion. A graduation display part made of a light guide which is narrowed to have a predetermined angle and has a graduation near the outer circumference, and an LED which is arranged on the outer circumference of the graduation display and allows light to enter the graduation display. And a pointer board having a substantially disc-like shape which is rotatably overlapped on the scale display portion and arranged so as to guide light from the scale display portion in a radial slit shape. A rotation driving means for continuously rotating the pointer board in a fixed direction, and a control means for driving the LED to emit light when the pointer of the pointer board comes to a predetermined angle position to surface-emit the scale display portion. It is equipped with.

Therefore, the control means continuously rotates the pointer board in a fixed direction by the rotation driving means. Further, the control means turns on the LED to emit light each time the pointer reaches a predetermined angular position, and turns off the LED at other angular positions. Then, at the time of light emission due to the ON operation of the LED, L
The light emitted from the ED enters from the periphery of the scale display unit, enters the reflecting surface, and is reflected by the reflecting surface to the surface of the scale display unit. At this time, the pointer panel located on the surface side of the scale display section blocks light emission from the scale display section except for the scale of the scale display section and the pointer of the pointer panel. Therefore, the driver can see only the scale on the scale display portion and the pointer on the pointer board.

As a result, it is possible to use the LED to display the pointer only at a predetermined angular position, and to exert a unique design effect due to the pointer and the scale that emits light on the outer periphery of the scale display section. You can In particular, since the LEDs are arranged on the outer periphery of the scale display portion, the number of LEDs to be arranged can be increased and the LEDs can be made brighter.

Further, since the pointer of the pointer board is rotated in a fixed direction by the control means and the LED is illuminated and displayed at a predetermined angular position, the user can, depending on the variable, the predetermined angular position of the scale on the scale display section. It is possible to visually recognize a pointer that emits light to indicate a predetermined variable. As a result, it is possible to display the pointer by using the LED, and a unique design effect can be exhibited by the pointer and the scale that emits light on the outer periphery of the scale display portion.

In particular, since the pointer board is rotated in a fixed direction,
It is not necessary to rotate in both the forward and reverse directions, and the rotation driving means can have a simple structure. Further, since the LED has a good responsiveness, when the pointer comes to the predetermined angle position, the LED accurately emits light, and an error does not occur in the variable quantity display.

According to a tenth aspect of the present invention, in the LED display device, the lower surface formed by making the thickness of the central portion thicker than the outer peripheral portion serves as a reflecting surface, and the width of the central portion of the plane perpendicular to the thickness direction is larger than that of the outer peripheral portion. A graduation display section made of a light conductor narrowed to have a predetermined angle and provided with a graduation near the outer circumference, and arranged on the inner circumference of the graduation display, and light is incident on the graduation display. A pointer having an LED and a substantially circular disk shape that is laid on the scale display portion so as to be rotatable relative to each other, and has a pointer that is cut out in a radial slit shape so as to guide light from the scale display portion. A disk, a rotation driving means for continuously rotating the pointer board in a fixed direction, and a control means for driving the LED to emit light when the pointer of the pointer board comes to a predetermined angle position to surface-emit the scale display portion. It is equipped with.

Therefore, the control means causes the rotary drive means to continuously rotate the pointer board in a fixed direction. Further, the control means turns on the LED to emit light each time the pointer reaches a predetermined angular position, and turns off the LED at other angular positions. Then, at the time of light emission due to the ON operation of the LED, L
The light emitted from the ED enters from the periphery of the scale display unit, enters the reflecting surface, and is reflected by the reflecting surface to the surface of the scale display unit. At this time, the pointer panel located on the surface side of the scale display section blocks light emission from the scale display section except for the scale of the scale display section and the pointer of the pointer panel. Therefore, the driver can see only the scale on the scale display portion and the pointer on the pointer board.

As a result, it is possible to display the pointer by emitting light only at a predetermined angle position by using the LED, and to exert a unique design effect by the pointer emitting light and the scale emitting light on the outer peripheral portion of the scale display section. You can In particular, since the LEDs are arranged on the inner circumference of the scale display portion, uniform brightness can be achieved even if the number of arranged LEDs is reduced.

Further, since the pointer of the pointer board is rotated in a fixed direction by the control means and the LED is illuminated and displayed at a predetermined angular position, the user can, depending on the variable, the predetermined angular position of the scale on the scale display unit. It is possible to visually recognize a pointer that emits light to indicate a predetermined variable. As a result, it is possible to display the pointer by using the LED, and a unique design effect can be exhibited by the pointer and the scale that emits light on the outer periphery of the scale display portion.

In particular, since the pointer board is rotated in a fixed direction,
It is not necessary to rotate in both the forward and reverse directions, and the rotation driving means can have a simple structure. Further, since the LED has a good responsiveness, when the pointer comes to the predetermined angle position, the LED accurately emits light, and an error does not occur in the variable quantity display.

In the LED display device according to the eleventh aspect of the present invention, a plurality of substantially annular light guides having different diameters are concentrically arranged in close contact with each other to form a substantially disc shape, and the respective light guides are independently guided to emit light. Board, LEDs arranged to correspond to the respective light guides of the light-emitting board, which makes light enter the light guides, and a substantially circular plate which is arranged so as to be rotatable relative to the light-emitting board. A slit disk, which has a shape and is formed by cutting out a slit in the radial direction so as to guide the light from the light guide body, a rotation driving unit that continuously rotates the slit disk in a certain direction, and according to a predetermined image, By controlling the light emission timing of the LED corresponding to the light guide,
When a slit of the slit board comes to a predetermined angle position, a predetermined light guide body emits light, and a portion where the slit and the light guide intersect each other is displayed in a dot shape, and the dot display is performed in the slit. And a control means for displaying an afterimage of the predetermined image by combining the rotation direction and the radial direction of the board.

Therefore, by controlling the light guides collectively, it can be used as a speedometer for displaying the vehicle speed. In addition, the control means, depending on the image to be displayed,
The light emission timing of the LED corresponding to the light guide is controlled, and when the slit of the slit board reaches the predetermined angle position, the predetermined light guide emits light to turn on the light guide. Therefore, the LED through the slit at the coordinate position of the light emitting board according to the image
Is emitted, and the image can be emitted and displayed by the afterimage effect. At this time, the display in the circumferential direction of the light guide is
The display is continuous with the movement of the slit, and the display is smoother than in the case of the dot matrix display. As a result, a desired image can be displayed using the LED and the image quality can be improved.

According to a twelfth aspect of the present invention, there is provided an LED display device in which the LED according to any one of the ninth to eleventh aspects has two or more colors. Therefore, in addition to the effect of any one of claims 9 to 11, a variable, an image, or the like can be expressed by any two colors and their mixed colors.

[Brief description of drawings]

FIG. 1 is a front view showing an entire vehicle meter to which a vehicle meter of a first embodiment of the present invention is applied.

FIG. 2 is a plan view showing a speedometer as a vehicle meter according to the first embodiment of the present invention.

FIG. 3 is an end view taken along the line AA of FIG.

FIG. 4 is an enlarged plan view of a main part of the speedometer shown in FIG.

FIG. 5 is a block diagram showing a circuit configuration of an entire vehicle meter according to the first embodiment of the present invention.

FIG. 6 is a flowchart showing the overall operation of the vehicle meter of the first embodiment of the present invention.

FIG. 7 is a plan view showing a vehicle meter according to a second embodiment of the present invention.

8 is a sectional view taken along line BB of FIG.

FIG. 9 is a block diagram showing a circuit configuration of an entire vehicle meter according to a second embodiment of the present invention.

FIG. 10 is a flowchart showing the overall operation of the vehicle meter of the second embodiment of the present invention.

FIG. 11 is an LE according to a third embodiment of the present invention.
It is a top view which shows the meter for vehicles as a D display device.

FIG. 12 is an LE according to a third embodiment of the present invention.
FIG. 12 is a cross-sectional view taken along the line CC of FIG. 11 showing the D display device together with the electrical configuration.

FIG. 13 is an LE according to a third embodiment of the present invention.
It is a flow chart which shows operation of the meter for vehicles as a D display.

FIG. 14 is an LE according to a fourth embodiment of the present invention.
It is a top view which shows the meter for vehicles as a D display device.

FIG. 15 is an LE according to a fourth embodiment of the present invention.
FIG. 15 is a cross-sectional view taken along the line DD of FIG. 14 showing the D display device together with the electrical configuration.

FIG. 16 is an LE according to a fourth embodiment of the present invention.
It is a flow chart which shows operation of the meter for vehicles as a D display.

[Explanation of symbols]

 10 Indicators 11 Radial Pieces 12,52 Reflective Surfaces 13,61 Pointers 21 Red LEDs 22 Green LEDs 23 Blue LEDs 31,81 Drivers 32 Speed Sensors 51 Optical Conductors 53 Scales 60 Pointers 71 Drives 91 Drives (Rotation driving means) 95 Rotary encoder (Control means) 101 Control unit (Control means) 102 LED driver (Control means) 103 Motor driver (Rotation driving means) 110 Light emitting boards 111a to 111j Light guide 120 Slit board 121 Slit 131 Control Part (control means) 132 LED driver array (control means)

Front page continuation (72) Inventor Tadanobu Iwasa 1 Ochiai, Ochiai, Kasuga-cho, Nishikasugai-gun, Aichi Toyoda Gosei Co., Ltd. In-house (72) Inventor Toshio Yamaguchi 1st Nagachihata, Ochiai, Kasuga-cho, Nishikasugai-gun, Aichi Prefecture, Toyoda Gosei Co., Ltd. (72) Inventor Takemasa Yasukawa 1st Nagahata, Ochiai, Kasuga-cho, Nishikasugai-gun, Aichi Prefecture Toyota Gosei Co., Ltd.

Claims (12)

[Claims] 1. A lower surface formed by making the thickness of the central portion thinner than the outer peripheral portion is used as a reflecting surface, and the width of the central portion is narrower than the outer peripheral portion of a plane perpendicular to the thickness direction so that a predetermined angle is obtained. A radial piece made of a held light conductor, and a light emitting diode which is disposed on the outer peripheral portion of the radial piece and makes light incident on each radial piece are provided. A light emitting diode display device, characterized in that the light emitting diodes are arranged at an angle and light is incident on each radial piece. 2. The light emitting diode display device according to claim 1, further comprising control means for causing a light emitting diode facing the radial piece at a predetermined angular position to emit light according to a traveling speed. 3. Arranged on the outer periphery of the radial piece,
The light emitting diode display device according to claim 1 or 2, wherein the light emitting diodes that enter light into each radial piece are of two or more colors. 4. The reflecting surface is a lower surface formed by making the thickness of the central portion thinner than that of the outer peripheral portion, and the width of the central portion is narrower than the outer peripheral portion of a plane perpendicular to the thickness direction so that a predetermined angle is obtained. A scale display part made of a light conductor having a scale near the outer periphery, and a light emitting diode disposed on the outer periphery of the scale display part for injecting light into the scale display part, and the scale display part. A pointer having a smaller circular plate shape, which is arranged so as to be rotatable relative to the scale display portion and is cut out in a radial slit shape so as to guide light from the scale display portion. A light emitting diode display device, comprising: 5. A reflection surface is formed on a lower surface formed by making the thickness of the central portion thicker than that of the outer peripheral portion, and the width of the central portion is narrower than that of the outer peripheral portion of a plane perpendicular to the thickness direction so that a predetermined angle is obtained. A graduation display part made of a light conductor having a scale near the outer circumference, and a light emitting diode disposed on the inner circumference part of the graduation display part for making light incident on the graduation display part; and the graduation display. Is a circular disk having a diameter smaller than that of the section, is arranged so as to be rotatable relative to the scale display section, and is cut out in a radial slit shape so as to guide light from the scale display section. And a pointer board having a light emitting diode display device. 6. A piece made of a light guide whose one end is thinner than the thickness of the other end and whose lower surface is a reflecting surface, and whose plane perpendicular to the thickness direction is a substantially rectangular shape, and one end where the thickness of the piece is large. A light emitting diode which is disposed on the side and which makes light incident on each piece, wherein a plurality of the pieces are superposed in a plane direction, and light emitting diodes which make light incident on each piece are made to correspond to each other. And a light emitting diode display device. 7. The light emitting diode display device according to claim 6, further comprising control means for causing a light emitting diode facing the piece at a predetermined position to emit light according to a traveling speed. 8. The light-emitting diode display device according to claim 6, wherein the light-emitting diodes arranged at the end portions of the pieces and allowing light to enter each piece have two or more colors. . 9. A lower surface formed by making the thickness of the central portion thinner than the outer peripheral portion is used as a reflecting surface, and the width of the central portion is narrower than the outer peripheral portion of a plane perpendicular to the thickness direction so that a predetermined angle is obtained. A scale display part made of a light conductor having a scale near the outer periphery, and a light emitting diode disposed on the outer periphery of the scale display part for injecting light into the scale display part, and the scale display part. A pointer disk having a substantially circular disk shape that is relatively rotatably overlapped with each other, and having a slit-shaped pointer notched in the radial direction so as to guide light from the scale display unit, and the pointer board. It is provided with a rotation driving means that continuously rotates in a fixed direction, and a control means that drives the light emitting diode to emit light only when the pointer of the pointer board is positioned at a predetermined angle position to emit light from the scale display portion. LED table Apparatus. 10. The lower surface formed by making the central portion thicker than the outer peripheral portion serves as a reflecting surface, and the width of the central portion is narrower than the outer peripheral portion of a plane perpendicular to the thickness direction so that a predetermined angle is obtained. A graduation display part made of a light conductor having a scale near the outer circumference, and a light emitting diode disposed on the inner circumference part of the graduation display part for making light incident on the graduation display part; and the graduation display. Pointer plate having a substantially circular disk shape that is arranged so as to be rotatable relative to each other, and has a slit-shaped pointer notched in the radial direction so as to guide light from the scale display section, and the pointer board. A rotation drive means for continuously rotating the pointer in a fixed direction, and a control means for driving the light emitting diode to emit light when the pointer of the pointer board comes to a predetermined angle position to surface-emit the scale display portion. Characterized light emitting diode display device . 11. A light-emitting panel in which a plurality of substantially annular light guides having different diameters are closely arranged concentrically to form a substantially disk shape, and each light guide is light-guided independently. Light-emitting diodes, which are arranged corresponding to the respective light guides and are configured to make light incident on the respective light guides, have a substantially disc shape and are arranged so as to be rotatable relative to each other on the light-emitting plate. A slit disk having slits cut out in a radial direction so as to guide light from an optical body, a rotation driving means for continuously rotating the slit disk in a certain direction, and corresponding to the light guide body according to a predetermined image. By controlling the light emission timing of the light emitting diode, a predetermined light guide body emits light when the slit of the slit board comes to a predetermined angle position, and a portion where the slit and the light guide body intersect is formed into a dot shape. Display, and the dot-shaped display rotates the slitter. Direction and a light emitting diode display device characterized by comprising a control means for residual image displaying the predetermined image by combining the radial direction. 12. The light emitting diode display device according to claim 9, wherein the light emitting diodes that enter light into the light guide are of two or more colors.