JPH0732276Y2 - Light-sensitive license plate - Google Patents

Description

[Detailed Description of the Invention] (Technical field of the invention) The present invention is a letter-light license plate, and more specifically, the letter portion shines more uniformly than the conventional one, and the durability is good,
The present invention relates to a light license plate that is easy to manufacture.

(Prior Art) As shown in FIG. 1 and FIG. 2, an optical license plate is an opening / closing frame 2 attached to the entire surface of a flat case 1.
In addition, a number plate 4 which is colored in a prescribed ground color and is stamped out from the letter 3 and a transparent synthetic resin plate is adhered to the letter 3 part is fixed, and an illumination lamp 5 is provided inside the case 1. The letters on the license plate 4 are illuminated by the illumination lamp 5 at night or the like.

Such a light-licensing license plate makes it possible to identify the license plate from a long distance by making the letters 3 shine, but the light plate 5 just above the illumination lamp shines strongly,
On the other hand, the letters 3 farther than the illumination lamp 5 become darker.
There is a drawback that unevenness is caused in the way the three characters are illuminated.

For this reason, at present, between the license plate 4 and the illuminating lamp 5, a milky white semi-transparent light beam dispersion plate 7 (the first one) is formed by baking the black paint 6 on the portion corresponding to the illuminating lamp 5 so as to become thinner toward the surroundings. (Fig. 3) is interposed to reduce the amount of light directly above or in the vicinity of the illuminating lamp 5 so that the characters 3 can be evenly lit (Act. Kokoku Sho 53-16308).
issue). A milky white translucent polypropylene plate is actually used as the light dispersion plate 7. The reason for using this polypropylene is that a synthetic resin having a high melting point that is not discolored or melted by the heat generated by the illumination lamp 5 (bulb) must be used. However, as is well known, polypropylene has poor adhesion and baking is extremely difficult.

In order to avoid such a defect, 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. However, the peel strength is low, and the seal is gradually deteriorated by the action of the heat of the illumination lamp and peeled off.

Further, when such a light dispersion plate is used, there is a defect 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 becomes streaked as a character.

(Purpose of the Invention) The present invention has been made in view of the above points, and provides a light-transmitting license plate that is easier to manufacture than conventional ones, has excellent durability, and does not cause uneven light emission of characters. The purpose is to

Therefore, the light-transmitting license plate according to the present invention has a light-transmitting license plate having a character part punched out and a transparent or translucent synthetic resin plate attached to the character part, and an illumination lamp for illuminating the character part. In the license plate, between the license plate and the illuminating lamp, at least two curved light beam dispersion portions that are curvedly covered so as to surround the upper portion of the illuminating lamp and are connected by a connecting portion,
Further, a light diffusing plate having a scattering groove is interposed in the connecting portion.

(Embodiment) 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 basically has a structure as shown in FIGS. 1 and 2. That is,
The opening / closing frame 2 attached to the entire surface of the case 1 is stamped with a character portion 3 which is colored in a prescribed ground color, and a fixed number plate 4 having transparent synthetic resin characters and numbers attached to the character 3 is fixed. The case 1 has a structure in which an illuminating lamp 5 for illuminating the character 3 is attached at an appropriate position.

According to the light-sensing license plate according to the present invention, as shown in FIG. 4, a light dispersion plate 7 for dispersing light is interposed between the illumination lamp 5 and the license plate 4.

The light beam dispersion plate 7 is composed of two curved light beam dispersion portions 71 and 72, and each of the curved light beam dispersion portions 71 and 72 is curved and has a structure in which a connecting portion 73 connected to each other is provided. Further, the light beam dispersion plate 7 has a flange 74 on its periphery so that it can be placed on the case 1.

The curved light beam dispersion portions 71 and 72 have a large thickness just above the illumination lamp 5, and are gradually thinned toward the connection portion 73 or the peripheral portion. Then, the structure is curved so as to cover the illuminating lamp 5 in the longitudinal direction with the illuminating lamp 5 as the center, and therefore light from the illuminating lamp is uniformly transmitted upward (to the license plate direction). It has been clarified by the study by the present inventor that the light beam dispersion is improved by bending the light beam dispersion portions 71 and 72 in this way.

Furthermore, the curved ray dispersion portions 71, 72 have a fifth connecting portion 73.
As shown in the enlarged view of the drawing, a scattering groove 75 is formed in the width direction, and the light beam irradiated on this scattering groove 75 is scattered and is transmitted more upward (that is, in the direction of the license plate 4). There is.

Therefore, as a whole, the light of the illuminating lamp 5 is uniformly transmitted upward, and the characters 3 of the license plate 4 are made to uniformly shine.

As shown in FIG. 6, the scattering groove 75 is formed in the connecting portion 73 over a width L, and this width L is formed in a portion corresponding to the minus mark portion 31 in the character 3 of the license plate 4. . That is, in the license plate 4 in Japan, a-mark for connection is provided between two digits. By associating the connection portion 73 having the scattering groove 75 with the minus mark portion 31, even if the scattering groove 75 is slightly transparent as a streak, it is possible to prevent the numbers or characters from being difficult to see.

The light beam dispersion plate is preferably manufactured using an engineering plastic such as polycarbonate. This is because the durability is further improved by using the resin having good heat resistance.

Further, when the illuminating lamp 5 is a light bulb, it is preferable to arrange the filament of the light bulb so as to be perpendicular to the license plate 4 as shown in FIG. By arranging the filaments in this way, a large amount of light rays are emitted in the horizontal direction of the case 1, and the light is more dispersed,
This is because the letters will glow evenly.

By using the light dispersion plate as described above, the characters of the license plate become uniform and emit light with an ideal luminous intensity, and the visibility of the characters at night is improved,
In this embodiment, as shown in FIG. 4, a scattering sheet 10 having an embossed surface is laid on the inner bottom surface of the case 1. The scattering sheet 10 works together with the light beam dispersion plate 7 to scatter the light of the illuminating lamp 5 to make the characters 3 shine uniformly, but as a result of experiments, it is preferable that the scattering sheet 10 is particularly white. all right.

(Effects of the Invention) As described above, according to the light-sensing license plate of the present invention, a plurality of curved curved light beam dispersion portions are connected and scattered at the connection portion of the curved light beam dispersion portion that covers the upper part of the illumination lamp. Since the groove is provided, there is an advantage that the light beam dispersion plate shines uniformly as a whole. Therefore, the letters shine evenly,
And there is an advantage that it becomes moderately dark. Further, by increasing the thickness of the curved light beam dispersion portion just above the illumination lamp so that the thickness gradually decreases toward the embroidery circle in the connection portion, the uniformity of light rays is further increased. Further, since the above-mentioned light beam dispersion plate can be manufactured by integral molding, it is possible to omit the conventional work of sticking a seal or baking a paint. In addition, the paint or seal does not come off due to heat, etc., and there is an advantage that the durability is good.

[Brief description of drawings]

FIG. 1 is a front view of a light-sensing license plate, FIG. 2 is a front view when an opening / closing frame is opened, FIG. 3 is a front view of a conventional light dispersion plate, and FIG. 4 is a light distribution plate according to the present invention. FIG. 5 is an enlarged cross-sectional view of the connection part of the light beam dispersion plate, and FIG. 6 is a rear view of the light beam dispersion plate and a plan view of the license plate. 1 ... Case, 2 ... Opening / closing frame, 3 ... Character part, 4 ...
License plate, 5 ... Lighting, 6 ... Paint (seal), 7 ... Light dispersion plate, 71, 72 ... Curved light dispersion part, 73
...... Connection, 75 …… Scatter groove.

Claims (2)

[Scope of utility model registration request] 1. A number plate in which a character portion is punched out and a transparent or translucent synthetic resin plate is attached to the character portion, and a letter-light license plate having an illumination lamp for illuminating the character portion, wherein the number is Between the plate and the illuminating lamp, there is at least two curved light diverging portions which are curved to cover the upper portion of the illuminating lamp, and which are connected by a connecting portion. Light license plate characterized by interposing a plate. 2. A light license plate according to claim 1, wherein the connecting portion is formed at a portion corresponding to the-mark of the license plate.