JPH0329198Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a decorative device for displaying characters, figures, etc., and particularly to a decorative device for displaying three-dimensional characters, figures, etc. using holograms.

(Prior Art) Decorative devices are often of a type suitable for the situation in which they are installed. Decorative devices used in vehicles and the like are often mounted with the display surface facing the viewing position on the side and with the display surface standing up substantially in the vertical direction. Furthermore, when the display surface of a vehicle or the like is viewed visually, it is often viewed sequentially, particularly in the lateral direction. For this reason, as a rule of thumb, for automobile garnishes, emblems, etc., emphasis is placed on emphasizing the stereoscopic visual effect in the horizontal direction rather than in the vertical direction, and such decorative devices are considered preferable.

(Problem to be solved by the invention) By the way, when forming a three-dimensional display pattern using holography in a decorative device, the direction in which the three-dimensional visual effect is particularly desired to be emphasized is set, and the reproduction light is adjusted accordingly. It is considered that if the setting is made to perform irradiation, a display pattern with enhanced stereoscopic visibility can be displayed in a more emphasized manner. An object of the present invention is to provide a decoration device that can particularly emphasize stereoscopic vision in a set direction.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention forms a support body from a transparent material, records a predetermined pattern on a rainbow-type reflection hologram formed on the support body, A light source is used to irradiate the hologram surface of the rainbow-type reflection hologram with reproduction light, and the angle between the hologram surface and the beam of reproduction light is set to 0° or more and 40° or less, so that the rainbow-type reflection hologram exhibits a stereoscopic visual effect. It is characterized in that the intersection angle formed by the beam of the reproducing light with respect to the direction perpendicular to the direction is set to ±50° or less.

(Function) By limiting the irradiation angle of the reproduction light with respect to the hologram surface, when displaying a display pattern using a hologram, it is possible to particularly emphasize the stereoscopic vision in the direction in which the set stereoscopic vision is produced.

(Example) FIG. 1 shows a decorative device as an example of the present invention. This decorative device is a pillar garnish that covers the outer surface of a rear pillar (see FIG. 3) R of an automobile, and is fixed to the outer panel 2 of the vehicle body by tightening bolts (not shown). This pillar garnish consists of a resin plate 1 as a support made of polymethyl methacrylate, which is a translucent material, and a light bulb 2 as a light source that emits white light disposed inside the resin plate.
and a hologram film 3 adhered to the inner surface of the resin plate 1. The resin plate 1 forms the outer surface of the side of the vehicle body, as shown in FIG. 3, and is attached at a predetermined angle with respect to the vertical direction A.

Bright treatment layers 4 and 5 are formed on the outer surface 101 and inner surface 102 of the resin plate 1 in an overlapping manner, except for the display section 103 and the light source facing section 104. Moreover, the outer surface is 10
The brightly treated layer 4 on the first side is further covered with a clear coat layer 6 that protects its surface. The brightness treatment layers 4 and 5 mirror-finish the outer surface 101 and inner surface 102 of the resin plate with respect to the inside of the resin plate so that the irradiated light guided into the resin plate 1 is totally reflected. Display section 103
A hologram film 3 is disposed opposite to the inner side of the hologram film 3 .
It should be noted that the display section 10 from this hologram film 3
The reflected light passing through 3 reaches a viewing position P facing the display section 103. The light bulb 2 is used to irradiate the hologram surface 301 of the hologram film 3 with reproduction light L at appropriate times, and is attached to the outer panel 8 of the vehicle body via a socket 7 here. The reproduced light L from the light bulb 2 enters the resin plate 1 from the light source facing part 104, is totally reflected by the brightness treatment layer 4, and then reaches the hologram surface 30.
1. The hologram film 3 used here is a white light reproduction type rainbow reflection hologram. In this hologram film 3, a reproduced image is reproduced in rainbow colors near the hologram surface 301, and it appears to have various hues depending on the viewing angle.The pattern recorded on this film is here a symbol mark of a vehicle. be. In addition, instead of this,
Alternatively, in addition to this, the name, model, etc. indicating the characteristics of the vehicle may be displayed in characters. All of these display patterns are formed three-dimensionally and have shapes that provide a clear three-dimensional effect at the viewing position P, particularly in the horizontal direction. Such a pattern has been previously recorded on the hologram film 3 by a predetermined means.

By the way, when the pattern recorded on the hologram film 3 is obtained as a reproduced image, it is assumed here that the stereoscopic sense in the horizontal direction (in this pillar garnishment, the front-back direction) is more important than the vertical direction A. It is said that Therefore, the surface relief of the hologram surface 301 of the hologram film 3 used here tends to have a shape mainly extending in the horizontal direction B as a result of the recording process. Therefore, it is desirable that the reproduction light L that irradiates the hologram surface 301 be irradiated from a direction substantially perpendicular to the surface relief, that is, from the vertical direction A, in order to create an optical path difference in the reflected light and cause interference. Based on this premise, an irradiation system is arranged to irradiate the hologram surface 301.

By the way, the following orientation angle α and crossing angle β (see FIGS. 4 and 5), which are the irradiation angles of the reproduction light L with respect to the hologram surface 301 of the hologram film 3, were obtained from the experimental results of the present inventor. Based on consideration of the measured values, it has become clear that if the values are within the ranges shown by the following inequalities (1) and (2), the stereoscopic visual effect in the horizontal direction B of the reproduced image can be particularly clarified and enhanced.

0゜＜α＜40゜ ...(1) -50゜＜β＜+50゜ ...(2) Here, the orientation angle α indicates the angle formed between the beam of reproduction light L and the hologram surface 301, and the intersection The angle β is the direction that gives the reproduced image a stereoscopic effect, that is, the horizontal direction B in this case, and the beam of the reproduction light L intersects with the direction of the vertical line l (see Fig. 6) that is perpendicular to this direction. It shows the corner. Note that the allowable ranges of the direction angle α and crossing angle β, which are these irradiation angles, are shown in FIGS. 4 and 5.

In the irradiation system in the embodiment shown in FIG. 1, the hologram surface 301 is arranged substantially in the vertical direction A. A light bulb 2 that emits white light is placed above the hologram surface 301, and its luminous flux is used as reproduction light L. The orientation angle α is set to about 15°, and the intersection angle β is set to about −17°<β< In other words, β is set to +17°, that is, β=0 at the center position and β≈±17° at both left and right end positions. Both the orientation angle α and the crossing angle β satisfy the inequalities (1) and (2), and the reproduced image obtained thereby is a rainbow-colored image with a clear stereoscopic vision in the horizontal direction B. as the hologram surface 301
obtained in the vicinity of .

FIG. 2 shows a decorative device as another embodiment of the present invention. This decorative device is a rear panel garnish that is attached to the rear end panel 10 (see FIG. 3) of an automobile, and is attached so as to be long in the vehicle width direction and stand upright in the vertical direction A. This rear panel garnish consists of a resin plate 11 made of a translucent material.
, a light bulb 2 that emits reproduction light L, and a hologram pattern section 12 formed on a part of the surface of the resin plate 11.
It is formed by This hologram pattern section 12
is made using a resin plate as a support, and its front side acts as a hologram surface 121. A plurality of hologram pattern sections 12 are arranged so as to be scattered on a display section 111 formed in a belt shape on the resin plate 11 of the rear panel garnish. Each hologram pattern section 12 has a separate light bulb 2 (1
(only one is shown) receives the reproduction light L, and reproduces the car name etc. as a three-dimensional image as a whole. Here, the front surface of the resin plate 11 is covered with a clear layer 6 forming a protective film, and the back surface is covered with a glitter treatment layer 3. Each light bulb 2 is connected to a convex portion 13 formed on the lower side of the rear end panel 10 by a socket 7, respectively.
installed within. The reproduction light L from each of these light bulbs 2 is irradiated onto each of the opposing upper hologram pattern sections 12, respectively. In this case, the orientation angle α of each reproduction light L with respect to each pattern portion 12 is set within the range of 0° to 40°, and the crossing angle β is set to ±50° or less (see Figures 4 and 5). . As a result, in the lateral direction B, which is the vehicle width direction, reproduced images with particularly clear stereoscopic visibility can be obtained continuously, and the car name as a whole is displayed as a rainbow-colored pattern with stereoscopic visibility at the viewing position P. It can be displayed more visually.

(Effects of the invention) As described above, the decoration device according to the invention uses a rainbow-type reflection hologram to give a three-dimensional visual effect.
That is, it is possible to set a direction to be emphasized and irradiate the reproduction light L based on the settings of the orientation angle α and intersection angle β accordingly, thereby displaying a reproduction image that emphasizes the stereoscopic visual effect in the specific direction. In particular, when this device is used for three-dimensional display of character patterns on automobile exterior garnishes or instrument panel displays,
A decorative device with enhanced stereoscopic visibility and clear pattern display can be obtained.

[Brief explanation of the drawing]

FIGS. 1 and 2 are sectional views of decorative devices that are different embodiments of the present invention, FIG. 3 is a perspective view of a car equipped with the same decorative device, and FIGS. 4 and 5 are
The figure is a diagram for explaining the permissible range of the orientation angle and the crossing angle, and FIG. 6 is a front view of the decoration device shown in FIG. 1. 1, 11... Resin plate, 2... Light bulb, 3, 12...
...Rainbow reflection hologram, 301, 121
...Hologram surface, L...Reproduction light, α...Direction angle, β...Intersection angle.

Claims (1)

[Scope of utility model registration request] A support made of a transparent material, a rainbow-type reflection hologram formed on the support and recording a predetermined pattern, and a light source that irradiates a hologram surface of the rainbow-type reflection hologram with reproduction light, The angle between the hologram surface and the beam of the reproduction light is set to be between 0° and 40°, and the reproduction light is directed in a direction perpendicular to the direction in which the rainbow-type reflection hologram produces a stereoscopic sense of the reproduced image. A decorative device characterized by having an intersection angle of light beams of ±50° or less.