JP3745898B2 - Strobe reflector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a strobe reflector constituting a strobe device.
[0002]
[Prior art]
A strobe device widely used in a camera or a lens-fitted photo film unit is generally a strobe discharge tube, a strobe circuit board having a booster circuit, a capacitor, etc. to emit light from the strobe discharge tube, and a strobe light efficiently. It comprises a strobe reflector (reflecting mirror) that reflects forward, a protector (diffusion plate) for protecting the strobe discharge tube, and the like.
[0003]
Among the components of the strobe device, the strobe reflector is formed of a thin metal plate or the like as is well known, and the inner side surface is a reflecting surface (mirror surface) in order to efficiently reflect strobe light to the front side. By the way, the reflection surface of such a strobe reflector is very easily damaged. When the surface is damaged due to scratches or the like, the strobe light is irregularly reflected, and the strobe light cannot be efficiently reflected to the front side (subject side). There is a fear. Also, dirt and dust are likely to adhere to the reflecting surface. In particular, in a film unit with a lens that is mass-produced at a low cost, the reflective surface is in the process of being transported until a strobo-reflector pre-punched from a metal plate is put into the assembly process of the stroboscope device for the lens unit with a lens. If it is exposed, it may be damaged by vibration or impact.
[0004]
The material of such a strobe reflector is protected by a flexible resin sheet or the like when it is a mirror-finished metal plate, and it is processed while being attached to the strobe reflector. Conventionally, the reflective surface of the strobe reflector is prevented from being damaged by putting it into the strobe device assembly process with the sheet attached. And just before being put into the assembly process of the strobe device for the film unit with a lens, the operator removes this protective sheet one by one from the reflecting surface of the strobe reflector with tweezers etc., and then attaches the strobe reflector to the strobe device. It was put into the assembly process.
[0005]
However, when the stroboscopic reflector is put into the stroboscopic device assembly process, when the worker peels the protective sheet from the reflective surface of the stroboscopic reflector one by one with tweezers etc., the work efficiency is extremely poor, and the stroboscopic reflector is not inserted. This often causes a decrease in productivity of the entire assembly process due to a bottleneck, and when the protective sheet is peeled off, the reflective surface is often damaged by using a tool such as tweezers. It was also a problem.
[0006]
For this reason, for example, as described in Japanese Patent Application No. 9-32260, a protective sheet covered with a reflective surface of the stroboreflector is injected by injecting gas toward the end of the stroboscopic reflector. A protective sheet removing apparatus is known and used in some cases. The protective sheet is lifted from a reflecting surface and sucked by a suction nozzle installed on the strobe reflector so that the protective sheet is lifted from the reflecting surface.
[0007]
[Problems to be solved by the invention]
However, when the protective sheet removing device by the gas injection and suction as described above is used to remove the protective sheet of the conventional reflector, the strobe discharge provided at the rear edge of the left and right reflecting surfaces of the reflector. There is a problem that the protective sheet is sandwiched in the notch at the periphery of the notch hole through which the tube passes, and the protective sheet that has lifted from the reflecting surface due to gas injection is not sucked.
[0008]
The present invention has been made in consideration of the above-mentioned problems of the prior art, and corresponds to a protective sheet peeling apparatus by gas injection, and a stroboscopic reflector that can easily peel off and suck a protective sheet from a reflecting surface. The purpose is to provide.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, in the strobe reflector according to claim 1, the metal plate is bent so that the reflective surface to which the protective sheet is closely attached is on the inner side, and is moved upward and downward toward the rectangular open surface that emits strobe light. The reflecting surface and the left and right reflecting surfaces are inclined so as to spread, and a notch hole through which the strobe discharge tube passes is formed at the rear edge of the left and right reflecting surfaces, and the bottom surface facing the open surface is the strobe discharge tube. A stroboscopic reflector having a curved surface following the cylindrical outer peripheral surface, wherein the protective sheet is removed in a step of assembling the stroboscopic device. A pair of protruding ear-shaped pieces is bent toward the outside of each of the left and right reflecting surfaces.
[0010]
In the stroboscopic reflector according to claim 2, the metal plate is bent so that the reflection surface to which the protective sheet is closely attached is on the inside, and the vertical reflection surface and the left and right reflection surface are spread toward the rectangular open surface that emits strobe light. In addition, a notch hole through which the strobe discharge tube passes is formed at the rear end edge of the left and right reflection surfaces, and a bottom surface facing the open surface follows a cylindrical outer peripheral surface of the strobe discharge tube A pair of ear-shaped pieces projecting toward the rear end side of the left and right reflecting surfaces by forming the cutout holes in the strobe reflector where the protective sheet is removed in the step of assembling the strobe device. A notch with a constant width is provided on the rear end side of the upper and lower reflecting surfaces so as to be along the outer periphery.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is an external perspective view of a lens-fitted film unit incorporating a strobe device assembled using the strobe reflector of the present invention, and FIG. 3 is an exploded perspective view thereof. The lens-fitted photo film unit 1 includes a main body 3, a photographing device 4 attached to the main body 3, a strobe device 5, a front cover 6 that covers these from the front and rear, a rear cover 7, and a unit main body 2. An exterior body 31 that covers a part of the unit main body 2 and a photographic film cartridge 32 are included.
[0012]
The photographing mechanism 4 is provided with a known shutter device 8, photographing lens 9, finder 11, photographing number display plate 12, and the like. On the front surface of the front cover 6, an opening for exposing the photographing lens 9, the finder 11 and the like is provided, and a charging completion display window 16 for confirming completion of the strobe charging is also provided. Further, a switch operating member 13 for operating the switch contact piece 25 of the strobe device 5 is integrally provided at the lower front portion of the front cover 6.
[0013]
On the upper surface of the front cover 6, a release button 14 for operating the shutter device 8 is integrally provided, and a photographic number display window 15 for exposing a part of the photographic number display plate 12 is provided.
[0014]
An aperture 17 that is an exposure optical path is provided at the center of the main body 3, and a cartridge chamber 18 and a film roll chamber 19 are formed at both ends thereof. In the cartridge chamber 18 and the film roll chamber 19, the photographic film cartridge 32 and the film roll 33b drawn from the photographic film cartridge 32 are stored in a light-tight manner. Further, a winding knob 21 for rotating the spool 34 of the photographic film cartridge 32 to wind up the photographic film 33a is provided in the upper portion of the cartridge chamber 18.
[0015]
A strobe device 5 is attached to the front upper portion of the main body 3. As shown in FIG. 4, the strobe device 5 includes a printed circuit board 22 on which various parts necessary for constituting a strobe circuit such as a capacitor 36 and a charge completion lamp 37 are soldered on a pattern, and a strobe light emitting unit described later. 23, a switch contact piece 25 for starting charging of the strobe circuit, a battery 24 for supplying power to the strobe device 5, and the like.
[0016]
The switch contact piece 25 is brought into contact with the contact points 35a and 35b formed on the printed circuit board 22 by the pressing of the switch operation member 13, and the contact point 35a and the contact point 35b are short-circuited, whereby the strobe device 5 is connected. Charging of the capacitor 36 is started. The strobe circuit also presses the switch operating member 13 only once to close the switch contact piece 25, and even if the pressing of the switch operating member 13 is released immediately, the main capacitor 36 is charged to the required voltage level. The detailed configuration and operation of the circuit are described in detail, for example, in Japanese Patent Application No. 5-268893.
[0017]
As shown in FIG. 6, the strobe light emitting unit 23 includes a strobe discharge tube 38, a strobe reflector 39, a protector 10, and a reflex case 40 that holds these together. As is well known, the strobe discharge tube 38 is a flash discharge tube in which a gas is sealed, and emits strobe light by applying a high voltage to the electrode 38a.
[0018]
FIG. 1 is a perspective view of the stroboscopic reflector of the present invention as seen from the back side, and FIG. 5 is a cross-sectional view of FIG. The stroboreflector 39 is formed by bending a thin metal plate with a protective sheet in close contact with the mirror-finished surface side so as to be bent in a parabolic shape. ) 39a. Further, both ends of the vertical reflection surface (mirror surface) 39a form left and right reflection surfaces 41a and 41b. Of the stroboscopic light emitted from the stroboscopic discharge tube 38, the stroboscopic light irradiated on the side of the bottom surface 39c that forms a curved surface following the cylindrical outer peripheral surface of the stroboscopic discharge tube 38 is converted into the vertical reflecting surface 39a and the left and right reflecting surface 41a. , 41b, and the strobe light is efficiently emitted forward (subject side).
[0019]
Since the reflection surface of the strobe reflector 39 is very easily damaged, a thin vinyl protective sheet 39b is stuck on the top and bottom reflection surface 39a and the left and right reflection surfaces 41a and 41b from the material stage to before the strobe device 5 is assembled. Yes. And it integrates, after the protective sheet 39b is removed by the protective sheet removal apparatus mentioned later. Note that the protective sheet 39b may be removed while the strobe reflector 39 is attached to the reflex case 40.
[0020]
The strobe reflector 39 has an open surface 39d on the front side (subject side), and notch holes 41c and 41d through which the strobe discharge tube 38 passes are located near the bottom surface 39c which is the rear edge of the left and right reflecting surfaces 41a and 41b. It is formed. The left and right reflecting surfaces 41a and 41b spread in an inverted C shape from the bottom surface 39c toward the open surface 39d. Further, ear-shaped pieces 41e and 41f are formed by bending the bottom surface 39c side of the peripheral edges of the cutout holes 41c and 41d at an angle perpendicular to the open surface 39d. The formation of the ear-shaped pieces 41e and 41f prevents the protective sheet 39b from being caught when the protective sheet 39b is sucked and removed by a protective sheet removing device described later.
[0021]
The protector 10 protects the strobe discharge tube 38 and the strobe reflector 39 and uniformly disperses the strobe light. The protector 10 is provided with an engaging plate 10 a that is engaged with the engaging claw 40 a of the protector 10. The reflex case 40 integrally holds the strobe discharge tube 38, the strobe reflector 39, and the protector 10 as the strobe light emitting portion 23, and an engaging claw 40a that engages with the engaging plate 10a of the protector 10 projects integrally. Has been.
[0022]
FIG. 7 is an explanatory view showing the protective sheet removing device and the strobe reflector for removing the protective sheet attached to the reflecting surface of the strobe reflector in the assembly process of the strobe device. The protective sheet removing device 51 is provided so as to come to the upper part of the central part of the strobe reflector 39, gas injection nozzles 52a to 52d which are gas injection means for compressed air, a suction nozzle 53 which is a suction means for the protective sheet 39b. It is composed of a protrusion prevention rib 54 and the like.
[0023]
The gas injection nozzles 52 a to 52 d surround the suction nozzle 53 disposed in the center, and are provided toward the four corners of the open surface 39 d of the strobe reflector 39. The gas injection nozzles 52a to 52d are connected to a compressor (not shown) that feeds compressed air. Then, by injecting gas from the gas injection nozzles 52a to 52d to the strobe reflector 39, the upper and lower reflection surfaces 39a and the left and right reflection surfaces 41a and 41b of the strobe reflector 39 are lifted, and the protection sheet 39b is lifted. Peels from the reflective surface 39a of the strobe reflector 39. In addition, the gas injected from the gas injection nozzles 52a to 52d can be efficiently peeled off by, for example, intermittent injection of the gas, for example, three times in 1.8 seconds.
[0024]
The suction nozzle 53 is disposed in the center so as to be surrounded by the gas injection nozzles 52a to 52d, and is connected to a vacuum device (not shown). As a result, the protective sheet 39b lifted from the strobe reflector 39 by the gas injection nozzles 52a to 52d is sucked and removed by the suction nozzle 53 and accumulated in the vacuum device.
[0025]
The pop-out preventing rib 54 provided at the upper position of the opening edge of the stroboscopic reflector 39 presses the stroboscopic reflector 39 so that the lightweight stroboscopic reflector 39 does not float when the protective sheet 39b is sucked by the suction nozzle 53.
[0026]
The operation of the above configuration will be described. When attaching the strobe reflector 39 in the assembly process of the strobe device 5 of the lens-fitted photo film unit 1, first, the protective sheet 39b is adhered to the top and bottom reflecting surfaces 39a and the left and right reflecting surfaces 41a and 41b of the strobe reflector 39, It is set in the reflex case 40. For example, the reflex case 40 is placed on the transport tray 55 and sent to the protective sheet removing device 51.
[0027]
When the stroboscopic reflector 39 set in the reflex case 40 reaches the protective sheet removing device 51, the compressed air is ejected intermittently from the gas injection nozzles 52a to 52d. As a result, air is blown between the protective sheet 39b, the upper and lower reflective surfaces 39a, and the left and right reflective surfaces 41a and 41b, the protective sheet 39b rises from the upper and lower reflective surfaces 39a and the left and right reflective surfaces 41a and 41b, and the protective sheet 39b Peel from the reflector 39.
[0028]
The protective sheet 39b peeled off from the strobe reflector 39 is quickly removed by suction by the suction nozzle 53. At this time, as shown in FIG. 1 and FIG. 5, the notch-shaped ear pieces 41 e and 41 f that are conventionally at the same angle as the left and right reflecting surfaces are bent outward to an angle perpendicular to the open surface 39 d. A gap is formed between the ear-shaped pieces 41e and 41f and the side end portions of the left and right reflecting surfaces 41a and 41b, and the protective sheet 39b is located between the ear-shaped pieces 41e and 41f and the side end portions of the upper and lower reflecting surfaces 39a during suction. The protective sheet 39b is surely removed from the strobe reflector 39 without being caught between them and being unable to be sucked.
[0029]
In addition, when removing the protective sheet 39b from the strobe reflector 39, it is not necessary to manually remove and remove the protective sheet 39b using tweezers or the like. Therefore, the protective sheet 39b is peeled off from the strobe reflector 39 efficiently and continuously. can do. Further, since the protective sheet 39b is peeled off by jetting compressed air, the top and bottom reflecting surfaces 39a and the left and right reflecting surfaces 41a and 41b of the strobe reflector 39 are not damaged by tweezers or the like.
[0030]
In the above embodiment, the bottom surface 39c side of the cutout holes 41c and 41d of the left and right reflecting surfaces 41a and 41b is bent as an ear piece 41e and 41f at an angle perpendicular to the open surface 39d. The bending angle may be a range that is wider from the angle perpendicular to the open surface 39d of the strobe reflector 39 to the outside than the inclination angle of the left and right reflecting surfaces 41a and 41b. When the bending angle of the ear-shaped pieces 41e and 41f is wider than the right angle with the open surface 39d, the light from the strobe discharge tube 38 is reflected backward, or the current leaks by approaching the electrodes 38a at both ends of the strobe discharge tube 38. Or problems such as easy entry of dust and dirt occur.
[0031]
In order to prevent the protective sheet from being sandwiched between the bottom surface side of the cutout holes of the left and right reflective surfaces and the side end portions of the reflective surface during suction removal of the protective sheet, in addition to the embodiment described above, for example, As shown in FIG. 8, you may provide a notch in the side edge part of a vertical reflection surface. A notch 64 having a constant width is formed on the rear end side of the vertical reflection surface 63 corresponding to the ear-like portions 62e and 62f at the periphery of the notch holes 62c and 62d provided in the left and right reflection surfaces 62a and 62b of the stroboscopic reflector 61. The As a result, gaps are formed between the ear-shaped portions 62e and 62f on the periphery of the cutout holes 62c and 62d and the side edges of the reflecting surface 63, and the ear-shaped portions 62e and 62f and the upper and lower reflecting surfaces 63 are removed during suction removal of the protective sheet. The protective sheet is not sandwiched between the rear end side.
[0032]
In the above-described embodiment, an example of a strobe device for a lens-fitted photo film unit has been taken up. However, of course, the present invention can also be applied to a strobe reflector of a strobe device used in a general camera. .
[0033]
【The invention's effect】
As described above, in the present invention, the metal plate is bent so that the reflective surface to which the protective sheet is closely attached is on the inner side, and the upper and lower reflective surfaces and the left and right reflective surfaces are directed toward the rectangular open surface that emits strobe light. A notch hole through which the strobe discharge tube passes is formed at the rear end edge of the left and right reflecting surfaces, and the bottom surface facing the open surface is curved to follow the cylindrical outer peripheral surface of the strobe discharge tube. A pair of ear-shaped protrusions each projecting toward the rear end side of the left and right reflecting surfaces by forming the cutout holes in the strobe reflector where the protective sheet is removed in the assembly process to the strobe device. Since the piece is bent toward the outside of each of the left and right reflective surfaces, it corresponds to a protective sheet peeling device by gas injection and easily peels the protective sheet from the reflective surface. It is possible to provide a flash reflector capable of sucking.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a stroboscopic reflector embodying the present invention.
FIG. 2 is an external perspective view showing a lens-fitted photo film unit assembled according to the present invention.
FIG. 3 is an exploded perspective view of FIG. 2;
4 is an exploded perspective view showing the strobe device of FIG. 3. FIG.
FIG. 5 is a cross-sectional view of FIG.
6 is an explanatory diagram showing a strobe light emitting unit in FIG. 4. FIG.
FIG. 7 is a cross-sectional view showing a protective sheet removing device.
FIG. 8 is a perspective view showing another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Film unit with a lens 5 Strobe device 23 Strobe light emission part 39 Strobe reflector 39a Vertical reflection surface 39b Protection sheet 40 Reflex case 41a, 41b Left and right reflection surface 41e, 41f Ear piece 51 Protection sheet removal apparatus 52a-52d Gas injection nozzle 53 Suction nozzle 54 Pop-out prevention rib

Claims (2)

The metal plate is bent so that the reflective surface to which the protective sheet is closely attached is inward, and the vertical reflection surface and the left and right reflection surfaces are inclined toward the rectangular open surface that emits strobe light. A notch hole through which the strobe discharge tube passes is formed at the rear end edge of the reflecting surface, and the bottom surface facing the open surface is a curved reflector that follows the cylindrical outer peripheral surface of the strobe discharge tube, In the strobe reflector from which the protective sheet is removed in the assembly process to the strobe device,
A stroboscopic reflector characterized in that a pair of ear-shaped pieces each projecting toward the rear end side of the left and right reflecting surfaces by bending the notch holes are bent toward the outside of each of the left and right reflecting surfaces. The metal plate is bent so that the reflective surface to which the protective sheet is closely attached is inward, and the vertical reflection surface and the left and right reflection surfaces are inclined toward the rectangular open surface that emits strobe light. A notch hole through which the strobe discharge tube passes is formed at the rear end edge of the reflecting surface, and the bottom surface facing the open surface is a curved reflector that follows the cylindrical outer peripheral surface of the strobe discharge tube, In the strobe reflector from which the protective sheet is removed in the assembly process to the strobe device,
A notch having a constant width is provided on the rear end side of the upper and lower reflective surfaces so as to be along the outer peripheral edge of the pair of ear-shaped pieces that respectively project to the rear end side of the left and right reflective surfaces by forming the notch holes. Strobe reflector.

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