JPH054189U - Display device with a three-dimensional appearance - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a thin display device in which the outline of a mark made up of characters, symbols, figures, or a combination thereof appears as a light emitting mark in a three-dimensional manner. [Structure] A mark is drawn on the front side of the transparent plate 20 by opaque and colored light shielding layers 21a and 21b. The transparent plate 20
The decorative prisms 22 are arranged on the rear surface of the rear surface, and the mark-shaped flat portions 22a, 22 are provided in the surface on which the decorative prisms are provided.
Place b. Then, the EL 23 is arranged behind it. The filter 24 may be omitted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a display device having a built-in light source, which is used as a rear finisher of an automobile and displays a character, a symbol, a figure, or a combination thereof by emitting light. In the present invention, the rear finisher means a device that is mounted on the rear part of a vehicle and displays characters, symbols, or figures, or a combination thereof, and even if it has a built-in light source, it has a function as an illumination lamp or a signal lamp. Instead, it has a design role.

[0002]

[Prior Art]

 FIG. 5 is a sectional view showing a conventional display device. This example is a rear finisher for an automobile, where the upper part of the figure corresponds to the outer side (rear) of the vehicle body and the lower part of the figure corresponds to the inner side of the vehicle body. In the figure, 1 is a transparent plate-shaped member, 1a is a front surface, and 1b is a back surface. The front surface 1a is the front surface and the back surface 1b is the rear surface when ignoring the traveling direction of the motor vehicle and referring to the light projecting direction as the display device. An opaque coating film 2 is formed on the rear surface of the transparent plate member 1, and the coating film 2 is provided with openings 2a and 2b in the shape of marks. Half vapor deposition 3a, 3b is applied to the rear surface 1b of the transparent plate so as to cover the openings 2a, 2b to form a half mirror. A plane light source (EL in this example) 4 is arranged in parallel with the rear side of the transparent plate 1 so as to be adjacent thereto. 6 and 7 are front external views of the conventional example (FIG. 5). In this example, the above-mentioned mark has an A shape, and the coating film 2 is coated and formed except for the A-shaped portion. During the daytime, when the EL4 is extinguished, the half mirror formed by the half vapor deposition reflects the external light, and the silver letter A 5 appears in the appearance as shown in FIG. When the EL 4 is made to emit light at night, the luminous flux passing through the half mirror reveals the A-shaped light emitting character 6 as shown in FIG.

[0003]

In the display device of the conventional example described with reference to FIGS. 5 to 7, the mark-shaped openings 2a and 2b provided in the coating film 2 are illuminated by the EL 4 and the dark vision at night. Light-emitting character 6 appears in the field. Since the above-mentioned light emitting character 6 visually recognizes the light passing through the half mirror composed of the half vapor depositions 3a and 3b vaporized on the rear surface 1b of the transparent plate 1, the surface of the half mirror is bright. The structure behind (back side, lower side in the figure) is not perceived by people outside the vehicle. Therefore, the luminescent character 6 has a two-dimensional appearance, does not have a three-dimensional thickness, and has a simple color tone. The present invention has been made in view of the above circumstances, and an object of the present invention is to make the entire device thin and to make a three-dimensional emission mark appear in a plurality of beautiful color tones. It is possible to provide a display device which has a simple structure and is inexpensive to manufacture.

[0004]

[Means for Solving the Problems]

 The basic principle of the present invention, which was created to achieve the above object, is outlined below. Marks are drawn on the front side and the rear side of the colorless and transparent plate member, and a surface light source is arranged behind them. The above-mentioned front and rear marks have the same shape and almost the same size, and the positive mark and the negative mark are related to each other. Here, the relationship between positive and negative means, for example, the relationship between a disc and a circular hole. When the above marks are placed on the front and back of the transparent plate so that they face each other, the positive mark and the negative mark overlap when viewed from the front, but when viewed from an angle, the positive mark and the positive mark overlap. The negative marks appear to be offset, and this offset creates a stereoscopic effect. Further, a filter is provided on the light source side of the negative mark to make the light flux passing through the negative mark into colored light, and when the positive mark is irradiated with light having a color tone different from that of the positive mark, various marks are three-dimensional. It seems to float up. As a concrete configuration based on the above-mentioned principle, the marking device according to the present invention comprises a flat light source, a transparent plate member provided in front of the flat light source, and characters drawn on the transparent plate member. In a display device comprising a symbol, a figure, or a combination thereof, the plane light source is a white light source composed of an EL, and a transparent flat plate shape is provided on the front side of the EL parallel to the white light source. Members are arranged, and a mark composed of letters, symbols or figures, or a combination thereof is drawn on the front side of the flat plate member by an opaque thin film, and on the back side of the flat plate member, It is characterized in that decorative prisms having a negative mark-shaped flat portion having the same shape as the above-mentioned mark are arranged. In the present invention, the decorative prism means a prism-shaped concavo-convex having no particular optical function.

[0005]

[Action]

 According to the above configuration, the light flux emitted from the EL passes through the negative mark-shaped flat portion of the decorative prism provided on the rear surface of the transparent plate, and becomes a light flux having a mark-shaped cross section. Incident on the positive opaque mark on the front side of the. When viewed obliquely from the front, the positive mark and the negative mark appear to be displaced, and due to this displacement, a three-dimensional mark having a thickness corresponding to the thickness of the transparent plate is visually recognized. In this way, the outline of the opaque mark on the front side of the transparent plate shines and appears three-dimensionally. In this case, if a colored filter is interposed, a three-dimensional mark with a more beautiful color tone appears.

[0006]

【Example】

FIG. 1 is a sectional view showing an embodiment of a display device having a three-dimensional appearance according to the present invention. The upper part of the drawing is the front side with respect to the display direction and the lower part of the drawing is the rear side. Reference numeral 20 in the figure is a transparent plate which is made of a colorless and transparent acrylic resin material and has a flat plate shape with a thickness of about 8 mm. 20a is its front surface and 20b is its rear surface. When the present invention is carried out, the thickness of the transparent plate 20 can be set arbitrarily, but 3 mm to 10 mm is suitable. This is because if the thickness is 3 mm or less, the three-dimensional effect is insufficient, and if it is 10 mm or more, shaping is difficult. Also, a transparent solid material other than acrylic resin can be arbitrarily selected and used. Mark-shaped colored light shielding layers 21a and 21b are provided on the front surface 20a of the transparent plate 20. In this example, the printing technique was used to print the A-shaped mark with a dark blue transparent printing ink. When carrying out the present invention, the colored light-shielding layer may be formed by a coating technique. Decorative prisms 22 are arranged on the rear surface 20b side of the transparent plate 20. Flat portions 22a and 22b are provided on the rear surface 20b on which the decorative prisms are arranged. These flat portions 22a and 22b are configured to have the same shape and substantially the same size as the colored light shielding layers 21a and 21b, and face each other through the transparent plate 20. EL23 which emits white light is arranged behind the transparent plate 20 in parallel with the transparent plate 20. A green filter 24 is arranged between the transparent plate 20 and the EL 23. When the present invention is implemented, the optical mark is colored when the filter 24 is arranged, which is beautiful, but the filter may be omitted. In the display device (FIG. 1) of the present example configured as described above, when a drive voltage is applied to the EL 23 to cause it to emit light, the white light emitted from the EL 23 is filtered by the filter 24 to become green light. Due to the masking effect of the decorative prism 22 having the letter-shaped flat portion, the light flux has an A-shaped cross section. In this example, a light-shielding coating film 28 is provided on the rear surface of the decorative prism 22. With this structure, the masking effect of the decorative prism becomes more reliable. The above green light flux having an A-shaped cross section proceeds into the transparent plate 20 and proceeds to the upper part of the figure with almost no attenuation, and irradiates the colored light shielding layers 21a and 21b from the rear surface side. As shown in FIG. 2, the outline of the mark formed by the colored light-shielding layer 21 looks bright. When this is viewed obliquely from the front, the colored light shielding layer 21 and the flat portion 22a of the decorative prism appear to be displaced by the width dimension w, as shown in FIG. The light seen from within this width w is the green light emitted from the EL 23 and filtered by the filter 24. In this way, the outline of the colored light-shielding layer 21 is wrapped in green light having the appearance of thickness to emit light in three dimensions, and the A-shaped light mark is raised. In this embodiment, the ridge 31 is provided around the flat portion 22b. Providing such a ridge makes the contour of the light mark stand out and is beautiful. When the display device of the present invention is used as a rear finisher for automobiles, there are restrictions such as the fact that red color tones cannot be used in Japan, but in the case of a rear finisher for export, it is sufficient to follow the traffic regulations of the destination. . In addition, since red, orange, etc. can often be used in applications other than the rear finisher, the color tone should be selected based on the respective usage conditions. FIG. 4 is a front view showing an example of a rear finisher configured by applying the present invention, in which 25 is a rear finisher having a length L of a predetermined size (specified by a design drawing of an automobile to be mounted). , A frame made of black synthetic resin with a width of w ₁ . Reference numeral 26 is a transparent plate surrounded by the frame 25, and characters 27a, 27b and 27c composed of a colored light shielding layer are printed on the front surface (the front side of the paper surface in the figure). Although not shown in FIG. 4, a decorative prism, a filter (green), and EL having the same or similar structure as the embodiment of FIG. 1 are arranged behind the transparent plate 26. As a result, when the rear finisher (FIG. 4) of the present example is viewed obliquely from the front, the contours of the characters 27a, 27b, 27c having green side faces and giving a feeling of thickness are three-dimensionally illuminated and appear to be raised. As can be easily understood from the above-mentioned FIG. 1, the display device of this example uses no electric parts other than the light source, has a simple structure and is inexpensive to manufacture. In addition, it has excellent durability because it does not contain components that age or deteriorate over time. In particular, it can be made thin, has a three-dimensional appearance, and the contours of the optical mark appear to be raised, which is of high design value.

[0007]

[Effect of the device]

 The present invention is applied to a display device comprising a flat light source, a transparent plate member provided on the front surface of the flat light source, and a character, a symbol, or a figure drawn on the transparent plate member, or a combination thereof. By applying the above flat light source as a white light source composed of EL, a transparent flat plate-shaped member is arranged in parallel with the front side of the EL, and the flat plate-shaped member is provided on the front side. A mark consisting of letters, symbols or figures, or a combination of these, is drawn by an opaque thin film, and a decorative prism having a negative mark-shaped flat portion is arranged on the rear surface side of the flat plate-like member, whereby the whole device can be made thin. It can be configured into a shape, and the contour of the three-dimensional light emitting mark appears to be visible, which is of high design value. Moreover, it has excellent practical effects such as simple structure and low manufacturing cost.

[Brief description of drawings]

FIG. 1 is a partial sectional view of an embodiment of the present invention.

FIG. 2 is a front view of the above embodiment.

FIG. 3 is a perspective view of the above embodiment.

FIG. 4 is an overall front view of an embodiment different from the above.

FIG. 5 is a sectional view showing a conventional display device.

FIG. 6 is a front view illustrating the extinguished state of the conventional example.

FIG. 7 is a front view illustrating a light emitting state of the above embodiment.

[Explanation of symbols]

1 ... Plate-shaped member, 1a ... Front surface, 1b ... Back surface, 2 ... Paint film,
2a ... aperture, 2b ... aperture, 3a ... half vapor deposition, 3b ... half vapor deposition, 4 ... EL (planar light source), 5 ... silver letters, 6
... Luminescent characters, 20 ... Transparent plate, 20a ... Front surface of transparent plate, 2
0b ... Rear surface of transparent plate, 21 ... Colored light-shielding layer, 21a ... Colored light-shielding layer, 21b ... Colored light-shielding layer, 22 ... Decorative prism, 2
2a ... Flat part, 22b ... Flat part, 23 ... EL, 24 ... Filter, 25 ... Frame, 26 ... Transparent plate, 27a ... Printed colored opaque characters, 27b ... Printed colored opaque characters, 27c ... Printing Colored opaque characters, 28
… Shading film.

Claims (1)

[Claims for utility model registration] 1. A transparent plate-shaped member, a flat light source arranged in parallel with the plate-shaped member behind the plate-shaped member, characters drawn on the transparent plate-shaped member, In a display device comprising a symbol, a figure, or a combination thereof, the flat light source is a white light source composed of EL, and a transparent flat plate-shaped member is provided in parallel with the front side of the EL. Are arranged on the front surface side of the flat plate-shaped member, a mark composed of characters, symbols or figures, or a combination thereof is drawn by a transparent thin film, and on the rear surface side of the flat plate-shaped member, A display device having a three-dimensional appearance, in which a decorative prism having a negative mark-shaped flat portion is arranged in a portion directly facing the mark.