JPH0682682U - Light-sensitive license plate - Google Patents

Abstract

(57) [Summary] [Object] To provide a light-sensitive license plate which does not use a light-scattering plate, is simpler to manufacture than conventional ones, is excellent in durability, and does not cause uneven light emission of characters. A letter part 3 is punched out, and an electroluminescence plate 9 for illuminating the letter part is arranged below a license plate 1 in which a transparent or translucent synthetic resin plate is attached to the letter part. A DC / AC inverter connected to an automobile power source was provided on the back surface of the plate, and the DC / AC inverter was connected to two electrodes 12 and 13 provided at substantially the entire length at the longitudinal ends of the electroluminescent plate. It is characterized by [Effect] Since the EL plate is used as the illumination unit and the electrodes are provided at the longitudinal end of the license plate over substantially the entire length, there is an advantage that the characters on the license plate illuminate uniformly.

Description

[Detailed description of the device]

[0001]

[Technical Field of Device]

 The present invention relates to a light-transmissive license plate, and more particularly, to a light-transmissive license plate which has a more evenly lit character portion than conventional products, has good durability, and is easy to manufacture.

[0002]

[Prior art and problems]

 As shown in FIGS. 4 and 5, the light-sensitive license plate is colored in the specified ground color on the opening / closing frame 2 attached to the entire surface of the flat case 1, and the character portion 3 is punched out, and the character The number plate 4 with a transparent synthetic resin plate attached to the part 3 is fixed, and two illumination lamps 5 are provided inside the case 1. The letters on the license plate 4 are illuminated at night. The light 5 is used for lighting.

Such a light-licensing license plate allows the license plate to be discriminated from a long distance by making the character portion 3 shine. The character part 3 farther than the light 5 has a defect that the character part 3 has unevenness in lighting, such as being dark.

For this reason, at present, a milky white translucent beam dispersion in which black paint 6 is baked between the license plate 4 and the illuminating lamp 5 so that the portion corresponding to the illuminating lamp 5 becomes thinner toward the surroundings. By interposing the plate 7 (FIG. 6) and reducing the amount of light just above or in the vicinity of the illuminating lamp 5, the character portion 3 is made to evenly illuminate (Act No. Sho 53-16308). As the light beam dispersion plate 7, a milky white translucent polypropylene plate is actually used. The reason for using this polypropylene is that it is necessary to use a synthetic resin having a high melting point that does not discolor or melt due to the heat generated by the illumination lamp 5 (light bulb). However, as is well known, polypropylene has poor adhesion and baking is extremely difficult.

In order to avoid such a drawback, a black-colored sticker 6'which gradually becomes thinner toward the surroundings is used in a portion corresponding to the illuminating lamp 5, and a light-scattering plate to which the sticker is attached is also used. There is. However, the peel strength is low, and there is a drawback that the seal gradually deteriorates due to the action of the heat of the illumination lamp and peels off.

Further, when such a light dispersion plate is used, there is also a drawback that the boundary 8 between the baked or adhered portion of the black paint 6 and the seal 6 ′ and the non-painted or non-adhered portion rises as a streak in characters. there were.

Further, when one of the illuminating lamps 5 has a bulb cut, the characters are extremely difficult to see.

[0008]

[The purpose of the device]

 The present invention has been made in view of the above-mentioned points, and it is easier to manufacture than conventional ones, has excellent durability, and does not cause light spots of letters, without using a light beam dispersion plate as in the past. It is intended to provide a non-light emitting license plate.

[0009]

[Means for solving problems]

 In order to solve the above-mentioned problems, the light-transmitting license plate according to the present invention punches out the character portion, and shines the character portion on the lower part of the number plate in which a transparent or translucent synthetic resin plate is attached to the character portion And a DC / AC inverter connected to the automobile power supply on the back surface of the electroluminescence plate, and further provided on the rear end of the electroluminescence plate over substantially the entire length. The DC / AC inverter is connected to one electrode.

[0010]

【Example】

 An embodiment of the light license plate according to the present invention will be described with reference to the drawings. The license plate according to the present invention is colored in a specified ground color on an opening / closing frame 2 attached to the entire surface of a case 1 as shown in FIG. And the letter portion 3 (see FIG. 2) is punched out, the number plate 4 with transparent synthetic resin letters and numbers attached is fixed to the letter portion 3, and the letter 3 is attached to the bottom of the case 1. It has a structure in which an electroluminescence plate (hereinafter referred to as an EL plate) 9 for shining is laid.

In this embodiment, a horizontally-long European license plate 4 as shown in FIG. 2 will be described as an example as compared with the conventional one. It seems that these days may be adopted in Japan as the number of registered vehicles increases.

A box portion 11 for housing the DC / AC inverter 10 is formed at the bottom of the case 1, and a plate-shaped DC / AC inverter 10 is provided in the box portion 11. The DC / AC inverter 10 is connected to a vehicle power supply (not shown) so that the DC vehicle power supply can be converted into AC.

Electrodes 12 and 13 are formed on the longitudinal end of the EL plate 9 so as to face each other over substantially the entire length, and the electrodes 12 and 13 are connected to the DC / AC inverter 10. However, the EL plate 9 is made to shine. In this way, by providing the electrodes 12 and 13 at the longitudinal ends of the EL plate 9 over substantially the entire length, particularly the horizontally long EL plate 9 can be uniformly illuminated. If the EL plate 9 is provided at the end portion in the short direction, the distance becomes too long and the EL plate 9 is difficult to uniformly shine.

The EL plate 9 is mounted on the DC / AC inverter 10 as described above, and the EL plate 9 has a locking portion 14 that rises up from the case 1 in a hook-shaped cross section and an elastic member. It is laid inside the case 1 in a detachable manner by a certain band 15 (see FIG. 3).

With such a structure, when a current is loaded from the vehicle power supply, the DC / AC inverter 10 converts DC into AC. The converted alternating current is input from the electrodes 12 and 13 to the electrode of the EL plate 9 and the symmetrical electrode, and the EL plate 9 emits light. At this time, since the EL plate 9 emits light uniformly, the letters of the license plate 4 provided by the opening / closing frame 2 on the entire surface of the EL plate 9 illuminate uniformly.

The EL plate 9 has a durability time of about 5,000 hours, and a general vehicle can be replaced at the time of vehicle inspection. In the case of replacement, after pulling the elastic band 15, the EL plate 9 is pulled out from the locking portion 14, and the locking is released to remove it. A new EL plate 9 is prepared, one end of the EL plate 9 is inserted and locked in the locking portion 14, and then the other end is stopped by a band 15 so as to be detachable. By providing the positions of the two electrodes of the EL plate 9 so that they are in contact with the respective electrodes 12 and 13 of the DC / AC inverter 10, the electrical connection is completed simply by mounting the EL plate 9. It will be

As for the luminance distribution of the luminescent characters of the luminous license plate using the EL plate as described above, the uniformity (maximum brightness / minimum brightness) is 1.18, and the conventional uniformity is 7.72. It was greatly improved compared to. Further, the change coefficient (luminance of 13V−luminance of 9V / 12luminance of 12V) at 9 to 13V due to the change of voltage is 0.53, which is an improvement over the conventional 1.16.

Further, the power consumption is 3.2 W, which is energy saving compared to the conventional 20 W (two 10 W light bulbs).

[0019]

[Effect of device]

 As described above, according to the light license plate of the present invention, the EL plate is used as the illuminating part, and the electrodes are provided at the longitudinal ends of the license plate over substantially the entire length. It has the advantage that the letters shine evenly. Moreover, the durability of the EL plate is as great as 5000 hours, and the durability is greatly improved as compared with the case where a conventional light bulb is used. Further, unlike the conventional case, since the light beam dispersion plate is not used, it is possible to omit the work of attaching a seal to the light beam dispersion plate or baking the paint. In addition, there is the advantage that the paint or seal will not come off due to heat.

[Brief description of drawings]

FIG. 1 is a sectional view of a light-sensing license plate according to an embodiment of the present invention.

FIG. 2 is a front view of a light-sensing license plate according to an embodiment of the present invention.

FIG. 3 is a front view of an embodiment when the opening / closing frame of the present invention is opened.

FIG. 4 is a front view of a conventional light license plate.

FIG. 5 is a front view when the opening / closing frame is opened.

FIG. 6 is a front view of a conventional light dispersion plate.

[Explanation of symbols]

 1 Case 2 Opening / Closing Frame 3 Character Part 4 License Plate 5 Lighting Light 6 Paint (Seal) 7 Light Dispersion Plate 9 EL Plate 10 DC / AC Inverter 11 Box Part 12 Electrode 13 Electrode

Claims (1)

[Scope of utility model registration request] 1. An electroluminescence plate for punching out a character portion and arranging a transparent or translucent synthetic resin plate attached to the character portion under a license plate for illuminating the character portion, and the electroluminescence plate. A DC / AC inverter connected to a vehicle power supply is provided on the back side of the DC / AC inverter, and the DC / AC inverter is connected to two electrodes provided over substantially the entire length at the longitudinal end of the electroluminescent plate. A light license plate that does.