JPH0478629A - Hood mascot - Google Patents

Abstract

PURPOSE:To colorfully recognize a hood mascot by eyes night and day in and out of a car by recording the three-dimensional form of the hood mascot in a hologram, and diffracting the external sunlight and the light from a light source lighted in a device on the hologram face. CONSTITUTION:When a light source 12 is lighted in the night, the light C1 emitted from the light source is formed into a parallel light C2 by a convex lens 13 and reaches to a three-dimensional image hologram 14, and a part of the light is diffracted to a vehicle inside 20. Thus, the vehicle inside passenger can visually recognize the hood mascot as a three-dimensional image recorded in the three-dimensional image hologram 14. The remaining light not diffracted by the three-dimensional image hologram 14 forms a transmitted light C4 of the three-dimensional image hologram 14, which is partly reflected by a semi-per meable reflecting film 15, again reaches to the three-dimensional image hologram 14, which is partly reflected by a semi-permeable reflecting film 15, again reaches to the three-dimensional image hologram 14, and is then diffracted to a vehicle outside 21. Thus, a passenger in a car running on the opposite lane can visually recognize the hood mascot by a diffraction light C5.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a food mascot, and particularly to a food mascot using a hologram.

(Prior art) For example, a conventional food mascot is shown in Fig. 5(a).
There is a hood mascot 1 made of a metal relief as shown in Fig. 1, which is attached to the center of the bonnet at the front of the vehicle.

By the way, although the emblem 2 of this hood mascot can be seen as it is from inside and outside the vehicle during the daytime, it cannot be seen at night, so the emblem 2 is illuminated by a device as shown in FIG. 2(b).

That is, 3 is a light source that is turned on in conjunction with the headlamp switch, and the light from the light source 3 is guided into a light guide 4 and into a donut-shaped cylinder 5 inside the emblem 2, and then through a diffusion lens. The emblem 2 is illuminated by being diffused by a light diffuser 6 made up of the like.

(Problem to be Solved by the Invention) However, in the conventional food mascot as described above, only the metal-colored (plated-colored) emblem is visible during the day, and the color inside the device, such as green, is visible at night. Because only the specific color selected by the filter is visible,
There was a problem that there was little freedom in shaping from a design standpoint, and it lacked aesthetic appeal as a food mascot.

This invention was made in view of the above-mentioned conventional problems, and its purpose is to provide a food mascot that is colorfully visible both day and night and has excellent design effects. be.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a hood mascot that is mounted on the hood of a vehicle and is visible from inside and outside the vehicle, in which a three-dimensional stereoscopic image that is visible as the hood mascot is recorded. a hologram that diffracts incident light in the direction of a predetermined diffraction angle; a transparent body that has an optical path through which light travels therein and holds the hologram; The hologram is characterized by comprising: a semi-transparent reflective film that transmits light with a transmittance of , and a light source that is provided inside the transparent body and irradiates the hologram.

(Operation) In this invention, the three-dimensional shape of the food mascot is recorded on a hologram, and sunlight from outside and light from a light source lit inside the device are diffracted on the hologram surface, and the diffracted light is used to The structure is designed so that people outside the vehicle can see the hood mascot. For this reason,
Inside and outside the vehicle, the hood mascot is recorded on a hologram and can be seen colorfully in the recorded colors both day and night.

(Explanation of Examples) The present invention will be explained below based on the drawings.

FIG. 1 is a sectional view showing the overall configuration of a first embodiment to which the present invention is applied.

In the figure, 11 is a cylindrical transparent body attached to the center of the vehicle bonnet 10, and is made of transparent plastic resin or the like.

A light source 12 is provided inside the transparent body 11 on the bonnet 10 side, and a light source 12 is provided above the light source 12.
A convex lens 13 is provided that converts the second light into parallel light.

The light source 12 may be an LED that combines two multi-wavelength light emitting or monochromatic light emitting sources, or a flat groove laser.

In addition, 14 is a reflective three-dimensional image hologram in which the food mascot is recorded as a three-dimensional image, and the transparent body 12
It is arranged at an inclination angle of about 45° in the central part of the interior.

On the other hand, a semi-transmissive reflective film 15 is provided on the upper part of the transparent body 11, and a transparent hemispherical mirror protector 16 for protecting the reflective film 15 is placed over the semi-transmissive reflective film 15.

As is well known, the three-dimensional image hologram 14 is produced by recording interference fringes of coherent laser light, and is configured to diffract an input wave of a specific wavelength with a predetermined diffraction efficiency characteristic. has been done.

The configuration of this embodiment has been described above, and its operation will be explained next.

First, at night, when the light source 12 is turned on, the light C1 emitted from the light source 12 is converted into parallel light C2 by the convex lens 13 and reaches the three-dimensional image hologram 14, and some of the light is diffracted to the inside of the car 20. The occupant inside the vehicle can visually recognize the Fudo mascot as a three-dimensional image recorded on the three-dimensional image hologram 14 by the diffracted light C3.

In addition, the remaining light that has not been diffracted by the three-dimensional image hologram 14 becomes transmitted light C4 of the three-dimensional image hologram 14, is partially reflected by the semi-transparent reflective film 15, and is re-diffracted by the three-dimensional image hologram 14.
It reaches the dimensional image hologram 14, and this time it reaches the outside of the car 21
The hood mascot recorded on the three-dimensional image hologram 14 can be visually recognized by the occupants of the oncoming vehicle by the diffracted light C5.

As described above, the hood mascot can be visually recognized in a colorful manner both inside and outside the vehicle at night.

On the other hand, since the light source 12 is lit even during the day, the inside 2
At 0, the hood mascot can be seen with the same optical path order as at night.

In addition, on the outside of the vehicle 21, sunlight S is transmitted to the mirror protector 1 during the daytime.
6 and the semi-transparent reflective film 15 to reach the three-dimensional image hologram 14, the hood mascot can be seen quite brightly due to this diffracted light C6.

As explained above, in this embodiment, the food mascot is recorded on the three-dimensional image hologram 14, and the three-dimensional image hologram 14 is irradiated with light from a light source or sunlight, so that the three-dimensional image can be seen day and night. The food mascot recorded in the hologram can be visually recognized in the recorded color and shape, and the food mascot, which is colorful and has an excellent appearance, can be visually recognized day and night.

Next, a second embodiment of the present invention will be described based on FIG. 2.

Note that the same components as those shown in the first embodiment will be described with the same reference numerals.

FIG. 2(a) is a sectional view showing the overall configuration of the second embodiment,
The figure (b) is a view taken in the direction of arrow A in the figure (a).

In this embodiment, a light reflecting film 25 having a U-shaped cross section is provided around the light source 12, and the light from the light source 12 and sunlight S
is configured to be effectively reflected within the transparent body 11, and a reflective hologram 26 is provided on the inner side wall surface of the transparent body 11.
．． Transmission type holograms 27 are superimposed and provided extending downward.

Furthermore, in this embodiment, the semi-transparent reflective film 15
The mirror protector 16 is arranged to be inclined in a direction substantially perpendicular to the mirror surface protector 16 so as to efficiently guide sunlight S toward the reflection hologram 26 and the transmission hologram 27.
The hemispherical portion is also configured to face the direction of sunlight S.

The above is the configuration of the second embodiment. Next, the operation will be explained. During the day, sunlight S is guided into the transparent body 11 as incident light C11 via the mirror protector 16 and the semi-transparent reflective film 15. The light is incident on the reflection hologram 26 and the transmission hologram 27, and the - portion is transmitted as diffracted light CI2 to the inside 20 of the vehicle.
At the same time, a part of the light is diffracted to the outside 21 of the vehicle as diffracted light C13, and the light is diffracted to the outside 21 of the vehicle 20' and the outside 21 of the vehicle.
The food mascot can be seen at

Further, in this case, the sunlight S incident on the light reflection film 25 is reflected by the light reflection film 25 and the reflection hologram 26. Since some components reach the transmission hologram 27, sunlight S can be used effectively.

On the other hand, at night, the light source 12 is turned on, and the light emitted from the light source 12 is directly reflected by the hologram 26. Transmission type hologram 27
At the same time, some of the light is reflected by the light reflection film 25 and is reflected by the reflection hologram 26. Since the light reaches the transmission hologram 27, the light from the light source 12 can be used effectively.

By the way, FIG. 3 shows the diffraction efficiency characteristics of the reflection hologram 26 and the transmission hologram 27 used in this embodiment, where A is the diffraction efficiency characteristic of the reflection hologram 26, and B is the diffraction efficiency characteristic of the transmission hologram 26. C is the relative luminous efficiency Cub, but both holograms are 26.27
The diffraction peak wavelengths of are configured to differ within the specific luminous efficiency curve.

Therefore, for example, the light in the peak wavelength band of the diffracted light of the transmission hologram 27 near the wavelength (near 52Snm) is
The light is not diffracted by the reflection hologram 26, but is transmitted through the reflection hologram 26, diffracted by the transmission hologram 27, and reaches the inside of the vehicle.

On the other hand, most of the light in the peak wavelength band of the diffracted light from the reflection hologram 26 near the wavelength a (around 575 nm) is diffracted by the reflection hologram 26 and reaches the outside of the vehicle.

For this reason, the reflection hologram 26. Transmission hologram 2
The light traveling in seven directions is separated into specific wavelength bands and reaches the inside and outside of the vehicle, which has the effect of efficiently obtaining diffracted light.

Further, in this embodiment, since the light source 12 is turned on only at night, it also has the effect of reducing power consumption.

Next, a third embodiment of the present invention will be described based on FIG. 4.

Note that the same components as those used in each of the above embodiments will be described with the same reference numerals.

3A is a cross-sectional view showing the overall configuration of the third embodiment, and FIG. 1B is a view taken in the direction of arrow B in FIG.

By the way, this embodiment differs from the second embodiment shown in FIG. 2 in that the semi-transparent reflective film 15 is provided with a curvature.

Therefore, in addition to the effects of the second embodiment, this embodiment has the effect that the hologram image can be made larger and brighter.

(Effects of the Invention) As described above, the hood mascot according to the present invention includes a hologram in which a three-dimensional stereoscopic image that can be visually recognized as a hood mascot is recorded, and which diffracts incident light in a predetermined diffraction angle direction.
a transparent body that has an optical path for light to pass therethrough and holds a bipedal hologram; a transflective film provided on the top surface of the transparent body that transmits light at a predetermined transmittance; and a bipedal transparent body. Since a light source is provided inside the device and illuminates the hologram, light from the sun from outside and light from a light source lit inside the device are diffracted by the hologram surface, and light is emitted from the inside and outside of the vehicle. This has the effect that the food mascot recorded on the hologram can be visually recognized in the recorded colors day and night.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a sectional view showing the overall configuration of a first embodiment to which the present invention is applied, FIG. 2 is an explanatory diagram showing the overall configuration of the second embodiment, and FIG. 3 is an explanatory diagram of the diffraction efficiency characteristics of a transmission hologram and a reflection hologram in the second embodiment, FIG. 4 is an explanatory diagram showing the overall configuration of the third embodiment, and FIG. 5 is an explanatory diagram of a conventional hood mascot. be. 10...Bonnet 12...Light source 13...Convex lens 14...Three-dimensional image hologram 15...Semi-transparent reflective film 16...Mirror protector 20...Inside the car 21...Outside the car 25 ...Light reflective film 26...Reflection hologram 27...Transmission hologram Patent applicant Nissan Motor Co., Ltd.

Claims (1)

[Claims] 1. In a hood mascot that is mounted on the hood of a vehicle and is visible from inside and outside the vehicle, a three-dimensional stereoscopic image that is visible as the hood mascot is recorded, and incident light is diffracted in a predetermined diffraction angle direction. a hologram; a transparent body having an optical path for light to travel therein and holding the hologram; a semi-transparent reflective film provided on the upper surface of the transparent body to transmit light at a predetermined transmittance; A hood mascot comprising: a light source provided inside the hologram for illuminating the hologram;