JPH04140730A - Flash device - Google Patents

Abstract

PURPOSE:To facilitate integral molding with the other member by molding the transparent panel provided ahead of a discharge light emitting tube in a metallic mold in which a color temperature correction agent layer adhesion film is inserted. CONSTITUTION:A film for printed 43 is inserted in the metallic molds 41 and 42. an opaque color paint layer 44a is printed at a spot corresponding to a part other than the window of a front plate 40 through a peeling layer on the film 43 and a mark 38 is also printed there. Then, an ultraviolet absorbent layer 44b for correcting a color temperature is printed at a spot corresponding to the transparent panel 18 of a flash light emitting part 4 through the peeling layer. The metallic moldes 41 and 42 are closed and transparent resin 45 is poured in. At such a time, the color paint 44a and the ultraviolet absorbent layer 44b are transferred to the resin 45 by the heat and the pressure of the resin 45.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a flash device used in cameras and the like.

(Prior art) Conventionally, the transparent panel on the light emitting device surface of the Warafunyu device was
It is manufactured by molding a transparent acrylic material mixed with a color temperature corrector such as an ultraviolet absorber.
As a result, flash light with a desired color temperature is obtained.

However, when the above-mentioned transparent panel is integrally molded with other display windows, finder windows, photometer equipment, and outer walls, the transparency of each window and wall is poor due to the color temperature corrector mixed in. I can't imagine that it would turn out or get an unnecessary color. Further, due to the mixed tζ color temperature correcting agent, gas is generated during molding, which may adhere to the inner surface of the mold and damage the mold.

(Problems to be Solved by the Invention) An object of the present invention is to provide a flash device equipped with a transparent panel that can reliably correct the color temperature of flash light and can be easily integrally molded with other components. There is.

(Means for Solving the Problems) In the flash device of the present invention, a transparent panel provided in front of a discharge arc tube is molded in a mold into which a color temperature corrector layer adhering film is inserted. It is characterized in that the color temperature correcting agent is transferred to a transparent panel in the process.

(Function) In the above-described flash device, the color temperature corrector layer can be transferred only to the necessary parts of the transparent panel to be molded. It does not impair the transparency or color of the material, so it can be easily integrally molded with other parts.

(Example) The present invention will be described in detail below with reference to the drawings.

FIG. 1(b) is a front view of the camera. The camera in this example is a so-called panoramic-only camera, and uses 35mm film.The standard screen of 24mm x 36mm, which is the standard format of film, is cut off at the top and bottom to make it horizontally long (13mm x 36mm). <
Shino shoots on the Norama screen. The front of the camera 1 is provided with a photographic lens 2, a finder window 3, a flash light emitting unit 4, windows 5a and 5b for distance measuring devices, and a self-timer operation display window 6, and a mark 38 indicating the manufacturer and model of the camera. It is provided. Figure 1(a)
is a top view of the camera, and this camera 1 has a so-called streamlined shape that gets thinner towards the right end in the figure.
A shirt release button 7 is provided on the top surface.

FIG. 2 is a cross-sectional view of the camera 1 along the photographing optical axis. Inside the camera 1, there is a photographic lens 2, a shutter device 8
, an exposure aperture 9, a cartridge chamber 1 for loading a film cartridge 10], a spool chamber 12 for winding the film.
, a battery chamber 13 and a flash device capacitor 14 are provided. In such a camera, a substantially cylindrical film cartridge O is loaded at the left end. However, if the outer wall of the camera is formed along the side wall of the film cartridge 10, the left end (first The right end portion in Figure (a) becomes thinner toward the end, and this shape allows the camera to be made most compact.

Figure 3 is a cross-sectional view of the camera 1 taken along the finder optical axis.
A flash light emitting unit 4 consisting of a reflective umbrella 17 and a transparent panel 18 is provided, and a light emitting element 2 is provided on the side thereof.
0, a distance measuring device 24 consisting of a condensing lens 21, a condensing lens 22, and a light receiving element 23, a finder optical system 25, and a light emitting element 26 for indicating self-timer operation are provided. The xenon discharge tube 16 and the reflector 17 are arranged at an angle of approximately 6 degrees with respect to the direction perpendicular to the photographing optical axis. This is because, as mentioned above, the shape of the camera 1 becomes thinner toward the end, and the front wall is inclined with respect to the direction perpendicular to the photographing optical axis. This is because 17 was placed. by this,
In addition to increasing the compactness of the camera 1, the flash light emitting unit 4 can be moved away from the photographing optical axis, and so-called red-eye phenomenon can be made less likely to occur. Note that it is appropriate that the inclination of such a flash light emitting section be 12 degrees or less. If it is tilted beyond this angle, it will be difficult to emit the flash light forward even if a member such as a reflector is used.

FIG. 4 shows an image frame 27 displayed in the finder superimposed on a subject image observable by the finder optical system 25. A single image frame 27 is a display section 28, 29, 29, 27, 27, 27, 27, 27, 27, 27, 27, 27, 22, 22, 22, 22, 2, 2, 2, 2, 2, 2, 2, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, and 4, and in which the image frames 27, 27, 27, 27, 27, 27, 27, 27, 27 Show the image frames displayed in the finder superimposed on the subject image observable by the finder optical system 25;
30 and 31 and a display section 32.3 showing distance measurement and photometry ranges.
3. Furthermore, the display sections 28, 29, 32 and 33 in the picture frame 27 are formed with horizontal display sections 34, 35, 36 and 37 representing horizontal. With this horizontal display section, it is possible to easily check the horizontal tilt in the horizontally long panoramic screen displayed in the viewfinder, and it is possible to prevent failures due to tilt during photographing.

In FIG. 1(b), FIG. 3, and FIG. It is molded as a plate. The front plate 40 is made of a transparent resin material and has each of the windows 3.4.5 described above.
Portions a, 5b, and 6 are transparent, and opaque paint is transferred to the other portions at the same time as molding by the film-in-mold method described later. Furthermore, during this film in-mold molding, the mark 38 is transferred, and at the same time, an ultraviolet absorber layer for color temperature correction is transferred to the transparent panel 180 portion of the flash light emitting section 4.

FIG. 6 shows the film-in-mold method. 6th
In Figure (a), a printing film 43 is inserted into the molds 41 and 42. On this printing film 43, an opaque colored paint layer 44a is printed on a portion of the front plate 40 other than the window through a release layer, and a mark 38 is also printed thereon. Furthermore, an ultraviolet absorber layer 44b for color temperature correction is printed on a portion of the flash light emitting unit 4 corresponding to the transparent panel 18 with a release layer interposed therebetween.

In FIG. 6(b), the molds 41 and 42 are closed and a transparent resin 45 is poured in. At this time, the colored paint layer 44a and the ultraviolet absorber 1i#44b are added to the resin 45 due to the heat and pressure of the resin 45. 6 (C), when the molds 41 and 42 are opened and the molded resin 45 is taken out, the colored paint layer 44a and the ultraviolet absorber N44b are transferred to the peeling layer and are not easily peeled off.5 In FIG. The film 43 is peeled off to form the front plate 40 shown in FIG. This completes molding and transfer in the same process.

Although this embodiment shows a camera with a built-in flash, the present invention can also be applied to a stand-alone flash device.

(Effects) As described above, the flash device of the present invention can print the color temperature corrector layer only on the necessary parts of the transparent panel to be molded, so even when the transparent panel and other members are integrally molded, Does not impair the transparency or color of other parts
Therefore, it can be easily integrally molded with other members, and the manufacturing process can be greatly simplified. Furthermore, gas is not generated during molding, unlike when a color temperature corrector is mixed into a resin material.

[Brief explanation of drawings]

1 to 6 show an embodiment of the present invention, with FIG. 1(a) being a top view and FIG. 1(b) being a front view. FIG. 2 is a cross-sectional view along the photographing optical axis, and FIG. 3 is a cross-sectional view along the finder optical axis. FIG. 4 is an explanatory diagram of the image frame of the finder, and FIG. 5 is a perspective view of the front plate. Figure 6 (
a), (b) and (c) are explanatory diagrams showing the manufacturing process of the front plate. 16 Discharge luminous tube 18 Transparent panel 43 Printing film 41.42 Mold

Claims (3)

[Claims] (1) In a flash device comprising a discharge arc tube and a transparent panel disposed in front of the arc tube, the transparent panel is molded in a mold into which a color temperature corrector adhesion layer film is inserted; A flash device characterized in that the color temperature corrector layer is transferred to the transparent panel in a molding process. (2) While the transparent panel is integrally molded with the outer wall of the flash device, a colored paint layer is attached to the portion of the film corresponding to the outer wall, and the color temperature is corrected during the integral molding process of the transparent panel and the outer wall. 2. A flash device according to claim 1, wherein the agent layer and the colored paint layer are transferred at the same time. (3) The flash device according to claim 2, wherein the flash device is built into a camera, and the outer wall is an outer wall of the camera.