JP2002099029A - Stroboscopic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stroboscopic device having a light distribution characteristic, which increases the design freedom of a reflection umbrella and is suitable for wide-angle photography. SOLUTION: A retaining device is set up in the stroboscopic device to retain a stroboscopic light-emitting tube and the rear end of a nearly parabolic reflector keeping a prescribed distance from each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strobe device capable of performing wide-angle irradiation.

[0002]

2. Description of the Related Art In general, a straight xenon discharge tube (hereinafter referred to as Xe tube) is used as a light emitting component of a strobe device. The Xe tube emits light by applying a light emission trigger to a light emitting portion (range of arc length) between the cathode and the anode while applying a voltage between the cathode and the anode. This light emission trigger (voltage)
Has conventionally been added to the Xe tube via a reflector of a strobe device. FIG. 1 is a schematic view of a conventional flash device using a Xe tube using a reflector as a trigger electrode. Since the reflector also serves as a trigger electrode of the arc tube 21 (Xe tube), FIG.
As shown in the schematic perspective view of FIG. 1A and the schematic side view of FIG. 1B, the arc tube 21 is urged so as to be pressed against the rear end of the reflector 20 (inner wall surface). The configuration was retained. Thus, the configuration in which the rear end of the reflector and the arc tube are in contact with each other can be a simple structure,
The mechanical strength was also advantageous. FIG. 2 is a graph showing light distribution characteristics when the rear end of the reflector 20 and the arc tube 21 shown in FIG. 1 are brought into contact with each other. The light distribution characteristics shown here are such that the light emission amount is substantially constant within a predetermined irradiation angle, or the light emission amount at the center of the arc tube is made larger than the light emission amount at the end, and the light at the center reaches The so-called guide number relating to the distance to be traveled is increased.

In such light distribution characteristics, when light is irradiated on a plane or the like facing the camera or on a subject arranged in a direction perpendicular to the front of the camera, the larger the two angles with respect to the subject, the greater the distance from the strobe device to the surrounding subject. Becomes longer, the amount of irradiation light decreases according to the inverse square law, and since the distance becomes longer, light reflected from the subject also decreases. Further, since the incident angle of the irradiation light becomes large in a plane object such as a wall, the component of the reflected light or the scattered light in the camera direction is reduced. In normal snap photography, the subject located at the periphery of the shooting screen is often farther away than the subject located at the center of the screen, and the strobe light reflected by the subject at the periphery is significantly reduced.

Further, in wide-angle photographing where the subject is at a short distance, the amount of light applied to the center of the subject becomes excessive, making it difficult to uniformly photograph the entire subject. In order to obtain a uniform light distribution characteristic at a wide angle, a device having a large reflecting mirror which is open at a wide angle has been used depending on shooting conditions.

Therefore, a strobe device having a light distribution characteristic in which the light amount at both ends of the irradiation range as shown in the graph of FIG. 3 is large and the amount of light reflected from the subject during wide-angle shooting is substantially uniform has been developed. A strobe device having a maximum light amount in a direction different from the strobe optical axis disclosed in JP-A-11-228576, or a peripheral portion having a larger amount of light than a central portion of an irradiation range disclosed in Japanese Patent Application No. 11-358974. Strobe devices with a large irradiation angle have been developed. As suggested by these techniques, the light distribution characteristics of the reflector and the arc tube change depending on the distance.

[0006]

As described above, when the rear end of the reflector and the arc tube are arranged so as to have a certain distance, the light distribution characteristics shown in FIG. 3 can be obtained. In order to implement such a strobe device having a substantially constant light distribution characteristic in a wide angle, a means for arranging the rear end of the reflector and the arc tube at a predetermined distance is required.

According to the present invention, the arc tube is attached to the reflector at a predetermined distance from the rear end of the reflector while reliably supplying a light emission trigger (voltage), thereby increasing the degree of freedom in the design of each part. The ideal light distribution characteristics can be obtained regardless of the diameter of the arc tube. In particular, large-sized reflectors can be used for strobe light irradiation, which is suitable for shooting at a close distance to a subject requiring wide-angle irradiation or for wide-angle shooting. The present invention is to provide a strobe device that can be used without the need.

[0008]

The invention according to claim 1 is
A flash device comprising: a light emitting tube; a reflector that reflects strobe light emitted by the light emitting tube toward a subject; and a transmission window that covers an opening of the reflector and transmits the flash light. And a locking means for locking the rear of the reflector from the rear end of the inner wall surface of the reflector.

According to a second aspect of the present invention, the locking means comprises:
The umbrella is formed by a locking portion provided on a reflector covering member that covers the rear surface of the reflector, and the arc tube is locked by the locking portion, and is separated from a rear end portion of the inner wall surface of the reflector. Item 1
According to the invention of the above.

According to a third aspect of the present invention, there is provided an arc tube, a reflector for reflecting the strobe light emitted from the arc tube toward the subject, a transmission window for covering the opening of the reflector and transmitting the strobe light, In a strobe device incorporated in a photographing device provided with: a locking means for locking the arc tube away from the rear end portion of the inner surface of the reflector is provided on the inner wall surface of the photographing device. Is what you do.

According to a fourth aspect of the present invention, there is provided an arc tube for emitting strobe light by an emission trigger, a reflector for reflecting the strobe light emitted from the arc tube to the subject side, and a strobe light for covering the opening of the reflector. A strobing device having a transmission window through which light is transmitted, wherein a locking means for locking the arc tube to a trigger member for applying the light emission trigger and separating from the rear end portion of the inner wall surface of the reflector is provided. It is assumed that.

According to a fifth aspect of the present invention, there is provided an arc tube for emitting strobe light by a light emission trigger, a reflector for reflecting the strobe light emitted by the arc tube to the object side, and a strobe light for covering an opening of the reflector and for strobe light. And a transmission window for transmitting light through the light emitting device, wherein the reflector has an insertion portion through which a trigger member to be brought into contact with the arc tube is inserted.

The invention according to claim 6 is the invention according to claim 5, wherein the insertion portion is a circular or polygonal insertion hole provided on the back side of the reflector. .

The invention according to claim 7 is the invention according to claim 6, wherein the insertion hole has a radius of 0.3 mm to 5.0 mm.

The invention according to claim 8 is characterized in that the insertion portion is a substantially elliptical or substantially rectangular elongated hole provided on the back side of the reflector. Things.

According to a ninth aspect of the present invention, the insertion portion of the elongated hole has a width of 0.3 mm to 5.0 mm and a length of 0.3 mm to 7.5 mm. It is related.

According to a tenth aspect of the present invention, the insertion portion includes:
The invention according to claim 5, characterized in that it is provided in the vicinity of a reflector opening in front of the arc tube inserted into the reflector.

An eleventh aspect of the present invention provides a light emitting tube which emits strobe light by a light emission trigger, a reflector having a substantially rectangular opening in front for reflecting the strobe light emitted by the light emitting tube toward a subject, and a reflector for reflecting the light. A transmission window for covering the opening of the umbrella and transmitting the strobe light, wherein the contact piece that contacts the arc tube separated from the rear end portion of the inner wall surface of the reflector and applies a light emission trigger is provided. It is characterized by being provided on a reflective umbrella.

According to a twelfth aspect of the present invention, the contact piece is
The invention according to claim 11, wherein a plurality of projections protruding downward from the upper surface of the reflector are provided.

According to a thirteenth aspect of the present invention, the contact piece includes:
12. A plurality of projections protruding from the rear end of the inner surface of the reflector umbrella toward the opening.
According to the invention of the above.

According to a fourteenth aspect of the present invention, the contact piece is
The invention according to claim 11, wherein the reflector is provided at a rear end portion of the side wall portion of the reflector.

According to a fifteenth aspect, the contact piece is
Make two notches in parallel on the back of the reflector,
The invention according to claim 11, wherein the wall is formed by projecting a wall surface between two notches into the inside of the reflector.

According to a sixteenth aspect of the present invention, the contact piece is
A substantially U-shaped notch is formed on the rear surface of the reflector, and a substantially rectangular wall surrounded by the notch is bent into the reflector and comes into contact with the rear of the arc tube. According to the invention of claim 11

In the invention according to claim 17, the contact piece is
By inserting a substantially U-shaped notch in the back of the reflector, bending a substantially rectangular wall surrounded by the notch into the reflector, and making contact by bending along the arc tube outer periphery. The invention according to claim 11 is characterized by being formed.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION The strobe device of the present invention which enables wide-angle irradiation can be used for various kinds of photographing illumination including a film unit with a lens, a camera, a digital camera and the like.

Here, a perspective view of FIG. 4 and FIG. 5 exemplifies a film unit with a lens as the camera 1, and an embodiment of a strobe device of the present invention will be described. The external configuration of the camera 1 is such that the front and rear portions of a main body (not shown) in which mechanisms such as a shutter release mechanism, a lens, and a film are incorporated are covered with a front cover 2 and a rear cover 3 made of synthetic resin. A fixed strobe light emitting section 5 is provided at the right end of the upper surface of the camera 1, and an unexposed roll film is loaded in the camera 1 in advance. The front of the camera 1 is provided with the above-mentioned strobe light emitting section 5, a photographic lens 6, a finder window 7, and a slide-type strobe switch operating member 8 having a projection constituting a main switch MSW. 9 and film counter window 1
0 and a charge confirmation window 11 are provided.

As shown in FIG. 5, a dial-type film winding knob 12 and a colorless and transparent resin finder eyepiece window 13 are provided on the back of the camera 1. A power supply battery such as a dry battery used for strobe light emission or the like is accommodated in a battery chamber provided in the camera.

The strobe switch operating element 8 shown in FIG. 4 is of a slide type that moves laterally in a guide groove 14 below the strobe light emitting section 5, and the protrusion of the strobe switch operating element 8 is moved by a finger or the like. Slide in the direction. The protrusion of the strobe switch operator 8 is moved to the position 14a of the guide groove 14.
, The main switch MSW provided in the strobe circuit in the camera 1 is turned off, and the strobe is not charged. When the protrusion of the strobe switch operator 8 is held at the position 14b of the guide groove 14, the main switch MSW of the strobe circuit is turned on, and strobe charging is started. An emission diode or a neon lamp NE attached to the strobe circuit in the camera 1 as a charge display element is disposed inside the charge confirmation window 11, and the light emitting diode (neon lamp NE) emits light to emit a strobe light. It informs the completion of charging. It should be noted that a strobe light emitting unit of each embodiment described later is provided at the same position as the strobe light emitting unit 5 exemplified here.

[Electric Tube Locking Means] (Embodiment 1) FIG. 6 is a perspective view of the strobe light emitting section 5, and FIG. 7 is an exploded perspective view of the strobe light emitting section 5.
The strobe light emitting section 5 is connected to the board forming the strobe circuit by a lead wire or the like, or is directly attached to the board by a locking means such as a snap, and is attached to the front cover 2 together with the strobe circuit board. Strobe light emitting unit 5
The schematic configuration of is a light emitting tube 21 which is a Xe tube of a light emitting element;
Reflective umbrella cover 25 of a reflective umbrella covering member for covering the rear side of the reflective umbrella
, A reflective umbrella 26, and a transmission window 27. In the first embodiment, by providing a locking means for locking the light emitting tube 21 to the reflector cover 25, the light emitting tube 21 can be attached at a predetermined distance without being brought into close contact with the rear end of the reflector 26 on the rear side. It was made.

The arc tube 21 (Xe tube) is formed in a straight tube shape. From both ends thereof, electrode rods 21a and 21a connected to a cathode provided in the arc tube 21 and an anode, respectively.
b protrudes. The reflective umbrella cover 25 is formed in a substantially box shape having an opening on the front surface, and has a reflective umbrella 26 inside thereof.
And the arc tube 21 are housed. Also, on both sides,
Insertion holes 25a and 25b through which the arc tube 21 is inserted are provided.

The reflector 26 has a substantially quadrangular opening 26d at the front end so as to reflect light forward.
The upper surface, the back surface, and the bottom surface are formed into a parabolic curve that is smoothly continuous from the upper end side, and the inner wall surface also forms a parabolic curved mirror that is also smoothly continuous. As described above, the rear end portion 26e serving as the rear portion of the reflective umbrella 26 is provided.
The outer wall and the inner wall are both curved in the vertical direction. Between the left and right side walls 26c1 on the side surface of the opening 26d and the side wall 26c2, the opening 26d extends from the rear end 26e.
, And the arc tube 2
An insertion part 26a through which the first part 1 is inserted and an insertion part 26b are provided near the rear end part 26e. The reflecting umbrella 26 is formed by sheet metal processing of a thin aluminum plate or the like.
As described above, since it is processed so as to have a smooth parabolic curve in the vertical direction, the both side wall portions are formed by bending each of the reflective umbrellas in the vertical direction. The slits are formed from the insertion portions of the side walls toward the opening. Further, since the reflector 26 is formed of a thin plate of aluminum or the like, all of the upper and lower wall surfaces and the inner wall surfaces of both side walls form a reflecting mirror and have conductivity.

The outline of assembling the strobe light emitting section 5 is as follows.
With the umbrella 26 facing forward and the umbrella cover 25
The arc tube 21 is inserted through the insertion hole 25a on the side surface, and further into the insertion portion 26a of the reflector 26. Next, the insertion portion 26b of the reflector 26 and the insertion hole 25b of the reflector cover 25
The arc tube 21 is inserted in this order. Finally, the transmission window 27 is locked to the opening of the reflector cover 25 by a locking means such as fitting. When the transmission window 27 is locked to the reflector cover 25, the reflector 26 is also locked to the reflector cover 25 by the transmission window 27.

In the first embodiment, the reflective umbrella cover 2 is used.
The inner surface of the rear end portion of the reflector 26 is separated from the arc tube 21 by locking means such as projections provided on the light emitting tube 5. FIG. 8A is a schematic diagram illustrating a cross section of the strobe light emitting unit 5, and FIG. 8B is a schematic diagram illustrating a vertical cross section of the strobe light emitting unit 5. On the inner wall surface on the back surface of the reflector umbrella cover 25, there are provided protrusions 25c and 25d having a U-shape and elasticity, and having a concave portion at the front end for engaging with the outer peripheral shape of the arc tube 21. Protrusion 25
The c and 25d are inserted through the reflector 26 (an insertion hole provided on the back of the reflector 26 not shown), hold the outer circumferences near both ends of the arc tube 21 in the recesses, and set a predetermined distance from the inner wall surface at the rear end of the reflector 26. And locked at a distance of. The protrusion 25c
Has illustrated a U-shaped locking means, but may be a concave portion that engages with the arc tube 21 or a protrusion formed with a ring-shaped insertion portion at the tip, and is not limited to the shape illustrated in FIG. 8.

(Embodiment 2) FIG. 9 shows a strobe light emitting portion 5a using a reflector umbrella cover 30 and a reflector umbrella 31 as an application of the first embodiment in which the arc tube 21 is locked by the reflector umbrella cover. Show. FIG. 9A is a schematic view showing a cross section of the strobe light emitting section 5a, and FIG. 9B is a side view of the light emitting tube 21 viewed from the electrode rod 21b side. The shape of the reflector 31 is the same as that of the reflector 26 described in the first embodiment.
The material and the shape are the same as those of the first embodiment except that the rear end does not have an insertion hole of a projection for locking the arc tube 21. The projection 27a1 is provided on the outer periphery of the transmission window 27a.
It is crowned at the opening. Alternatively, it may be attached to the front cover 2 of the camera 1. The reflective umbrella cover 30 is formed in a substantially box shape having an opening on the front surface thereof by resin or the like, similarly to the reflective umbrella cover 25. On both sides of the reflector cover 30, insertion holes 30a and 30b through which the arc tube 21 is inserted are provided. Further, for example, a projection, a concave portion, or the like is provided on the opening portion or the inner wall surface of the reflector umbrella cover 30, and is mutually locked with the reflector umbrella 31 by locking means such as fitting.

The locking means of the arc tube 21 shown here is such that the diameters of the insertion holes 30a and 30b provided on both side surfaces of the reflector umbrella cover 30 are slightly larger than the outer diameter of the arc tube 21. The inserted arc tube 21 is held. Here, the reflective umbrella cover 30 covers about the rear half of the reflective umbrella 31 and the transmissive window 27a is attached to the reflective umbrella 31. However, as shown in FIGS.
1 may be covered with a reflective umbrella cover, and the transmission window 27 may be attached to the reflective umbrella cover opening and closed. In addition,
Instead of making the insertion holes 30a and 30b circular, holes larger than the outer diameter of the arc tube 21 (see FIG. 9C) as shown in FIG.
(C), a plurality of (two or more, preferably four) projections 30c are provided in the hole, and the outer periphery of the arc tube 21 is held between the adjacent projections 30c. good. In the case of the second embodiment,
The locking means (insertion holes 30a, 30b) hold the light emitting tube 21 outside the light emitting part (within the range of the arc length) of the light emitting tube 21, so that the light emitted from the light emitting tube 21 can be effectively used. .

(Embodiment 3) An application form of Embodiment 1 in which the arc tube 21 is separated from the rear end of the reflector by the reflector cover will be described. The reflector umbrella cover 35 shown in FIG. 10 has a schematic shape in which a portion above the insertion hole center of the reflector umbrella cover 25 is cut out. FIG. 10A is a schematic view showing a cross section of a strobe light emitter 5b using a reflector umbrella cover 35 and a reflector umbrella 36. FIG. The material and shape of the reflector 36 are the same as those of the reflector 31. As described above, the transmission window 27b closes the opening of the reflection umbrella 36. Even if the transmission window 27b has a projection for covering the opening of the reflection umbrella 36 like the transmission window 27a. It is preferable that the transmission window 27b is locked to the inner wall surface of the front cover 2 and the strobe light-emitting portion 5b is reflected when the strobe light-emitting portion 5b is incorporated into the front cover 2. You may make it engage with the umbrella 36.

The reflector 36 is locked to the opening of the reflector cover 35 or the inner wall surface as described in the first and second embodiments. In FIG. 10 (A), since the reflector umbrella cover 35 does not cover the upper part of the reflector umbrella 36, the reflector umbrella cover 35 is not shown in cross section but on the upper surface, and the insertion hole of the arc tube 21 described so far is substantially semicircular. FIG. 10 (B)
As shown in the side view of the strobe light emitting section 5 viewed from the side of the electrode rod 21b, the arc tube 21 has concave portions 35a, 35
b. The recesses 35 a and 35 b are shaped to engage with the arc tube 21 and are slightly larger than the outer diameter of the arc tube 21. The reflector umbrella cover 35 shown in FIG. 10A has a substantially rectangular shape when viewed from above, but at least the interval between the concave portions 35a and the concave portions 35b
The shape is not limited to the shape illustrated here, as long as it has a distance that can hold 1. The recesses 35a, 35b
Is provided at a predetermined position in the front-rear direction of the strobe light emitting unit 5b so that the inner wall surface of the rear end of the reflector 36 and the arc tube 21 are separated from each other. In the case of the third embodiment, the locking means (concave portions 35a, 35b) holds the light emitting tube 21 outside the light emitting portion (within the range of the arc length) of the light emitting tube 21, so that the light is emitted from the light emitting tube 21. Light can be used effectively.

(Embodiment 4) In Embodiment 4, when the strobe light emitting portion 5c is locked to the front cover 2 of the camera 1, the light emitting tube 21 and the rear end of the inner surface of the reflector are separated from each other. Main body 4 incorporating each mechanism of camera with locking means for locking
0, or on the inner wall surface of the rear cover 3. Here, a description will be given of a case in which the main body 40 is provided with locking means.

FIG. 11 is a schematic view showing a state in which the rear cover 3 has been removed from the camera 1 shown in FIG. 5, and the strobe light emitting section 5c is provided at the position of the strobe light emitting section 5 as shown. The main body 40 is formed of a synthetic resin or the like in the same manner as the front cover 2 and locks the front cover 2 and the rear three covers by locking means such as fitting. The main body 40 includes a film winding knob 12, an eyepiece window 13, a shutter release button 9 provided on the upper surface of the camera 1, a film counter window 10,
It includes a charging confirmation window 11, and various components such as a strobe light emitting unit 5 provided on the front of the camera 1, and locks the front cover 2. The main body 40 may be formed integrally, or may be formed by being divided according to the assembling process of the camera 1 for convenience. A strobe circuit 15 indicated by a broken line in FIG. 11 is a substrate on which a circuit element for causing the strobe light emitting unit 5 to emit light is mounted, and includes a light emitting circuit for strobe light emission, a display circuit for displaying strobe charge completion in the charge confirmation window 11, and the like. The circuit is incorporated, and is positioned by an inner wall surface of the front cover 2 and a locking projection formed on the front surface of the main body 40, and is interposed and locked between the front cover 2 and the main body 40.

FIG. 12 shows a state in which the strobe light emitting portion 5c is locked by the front cover 2 and the main body 40.
FIG. 12A is a schematic diagram showing a cross section of the strobe light emitting section 5c. The transmission window 27c is provided with the transmission windows 27, 27.
It is the same material as a and 27b, is formed in the same shape, and is locked to the reflector or the front cover 2. The reflective umbrella 42 is the same in material and shape as the reflective umbrellas 31 and 36, and the insertion portions 42 for inserting the arc tube 21 are provided on both side walls.
a and 42b are provided, and are interposed and locked between the front cover 2 and the main body 40. Embodiments 1 to 3
In order to have the function and function of the reflective umbrella cover described in the above, a locking means such as a projection or a concave portion (not shown) is formed on the front surface of the main body 40 to lock the reflective umbrella 42.

The main body 40 is provided with holding projections 40a and 40b for holding the light emitting tube 21 protruding toward the front cover 2 at a position near the strobe light emitting portion 5c. Lock. Both ends of the arc tube 21 protruding from the insertion portions 42a and 42b of the reflector 42 are held by the tips of the holding protrusions 40a and 40b, and the reflector 42 is
From the rear end of the inner wall surface by a predetermined distance. The distal ends of the holding protrusions 40a and 40b hold the arc tube 21 as a concave portion having elasticity or a ring shape similarly to the protrusions 25c and 25d described in the first embodiment.

(Fifth Embodiment) As an application of the fourth embodiment, the holding projections 40c and 40d provided on the main body 40 are provided.
FIG. 12 is a cross-sectional view of a strobe light-emitting unit 5d in which the
It is shown in the schematic diagram of (B). The reflecting umbrella 46 is formed of the same material and shape as the reflecting umbrella 42 described in the fourth embodiment, except that an insertion hole through which the holding projections 40c and 40d are inserted is provided at the rear end. Holding projection 40 provided on main body 40
The tips of c and 40d are the protrusions 25c of the first embodiment,
25d, which is formed in an elastic concave portion or a ring shape like the holding projections 40a and 40b of the fourth embodiment, and holds the arc tube 21.

In the fourth and fifth embodiments, the case where the holding projection of the arc tube 21 is provided on the main body 40 is exemplified. However, the holding projection having the same shape is provided on the inner wall surface of the rear cover 3 and the front cover 2 is provided.
When the and the rear cover 3 are engaged with each other, the arc tube 21 may be locked by the holding projection. In this case, after the rear cover 3 is locked to the main body 40, the strobe light emitting portion 5c is assembled, and the front cover 2, the main body 40, and the rear cover 3 hold the main body 40.

In the first, fourth, and fifth embodiments, since the arc tube 21 is locked at the tip of each projection, the insertion portion provided on the side wall of the reflector and the reflector are provided. Since the insertion hole provided on the side surface of the umbrella cover does not need to contact the arc tube 21, its shape and size may be larger than the outer diameter of the arc tube 21.

The arc tube 21 is shown in FIGS.
And FIG. 12 illustrates the electrode rods 21a and 21b connected to the cathode and the anode, respectively. However, when an Xe tube is used for the arc tube 21, a trigger electrode for applying a light emission trigger (not shown) is required. And an electrode member that comes into contact with the Xe tube in the reflector, a conductive member that connects the electrode member to the strobe light emitting circuit, means for supporting the conductive member, and an insertion hole through which the conductive member is inserted. It goes without saying that the reflective umbrella cover, the reflective umbrella and the like are provided.

(Embodiment 6) Next, Xe
An embodiment will be described in which the arc tube 21 is locked by a member that applies a necessary light emission trigger when a tube is used, and is separated from the rear end portion of the inner wall surface of the reflector. FIG. 13 illustrates an example in which a metal trigger wire is used as a conductive member for applying a light emission trigger. As the trigger wire, a general copper wire, tin-plated wire, or the like that can be easily processed and has appropriate rigidity after being formed by bending or the like can be used.

FIG. 13A is a cross-sectional view of the strobe light emitting portion 5e in which the trigger wire is inserted from the rear end of the reflector umbrella cover 50 and the rear end of the reflector umbrella 51 to lock the arc tube 21. It is a schematic diagram. The reflector umbrella cover 50 is formed in a substantially box-like shape using a material such as a synthetic resin, similarly to the reflector umbrella cover 25 described in the first embodiment, except for the insertion holes for the trigger wires provided on the back surface. The reflector 51 has the same material and shape as the reflector 26 described in the first embodiment, except for the insertion hole at the rear end. The transmissive window 27d is formed of the same material and shape as the transmissive window 27c described in the fourth and fifth embodiments, and closes the opening on the front surface of the reflective umbrella cover 50. The trigger wire 52 is bent in a U-shape, and both end sides 52a, 52b are respectively provided in the insertion holes 50a, 50b provided on the back surface of the reflector umbrella cover 50, and the insertion holes 51a provided in the rear end of the reflector umbrella 51, 51b.

As described in the first embodiment and the like, the arc tube 21 is inserted through the side surface of the reflector umbrella cover 50 and the side wall surface of the reflector umbrella 51, and the side surface of the reflector umbrella 51 in FIG. As shown in the figure, the end side 52a of the trigger wire 52,
The front end 52b is wound around the outer periphery of the arc tube 21 and is locked at a predetermined distance from the rear end of the inner wall surface (reflecting mirror) of the reflector 51.

(Embodiment 7) When the arc tube 21 is locked in the reflector by a trigger wire, in the sixth embodiment, the reflector 5 is inserted through the insertion holes 51a and 51b at the rear end of the reflector 51.
1 was inserted through the trigger wire 52, as shown in FIG.
As shown in the schematic view showing the cross section of the strobe light-emitting portion 5f,
The trigger wire 57 is inserted together with the arc tube 21 into the insertion holes 55 a and 55 b provided on the side surface of the reflector 55 and the insertion holes 56 a and 56 b provided on the side surface of the reflector 56, and the arc tube 21 is locked.

The reflecting umbrella cover 55 shown in FIG.
Reflective umbrella cover 55 instead of rear insertion holes 50a, 50b
It has the same material and shape as the reflective umbrella cover 50 described in the sixth embodiment except that an opening (slit) for inserting the trigger wire 57 is provided on the upper and side surfaces of the light emitting tube. Insertion holes 55a and 55b for inserting the trigger wire 21 and the trigger wire 57 are provided. The reflecting umbrella 56 is made of the same material and shape as the reflecting umbrella 51 of the sixth embodiment except that there are no insertion holes 51a and 51b at the rear end, and the arc tube 21 and the trigger wire 57 are provided on both side walls. Are provided. The transmission window 27d closes the opening on the front surface of the reflector umbrella cover 55 as in the sixth embodiment.

The trigger wire 57 is bent along the outer circumference from the back of the reflector umbrella cover 55 to the respective insertion holes on both sides in a substantially quadrilateral shape, and its tip is inserted into the reflector 56 (reflection mirror). (B), it is bent along the outer periphery of the arc tube 21 like the end sides 52a and 52b, and holds the arc tube 21.

(Eighth Embodiment) In the sixth and seventh embodiments, the light emitting tube 21 is locked by using a trigger wire. However, a strobe light emitting portion using a trigger contact piece such as a thin metal plate as a conductive member for applying a trigger voltage is used. 5g will be described. FIG. 14 (A)
FIG. 7 is a schematic diagram showing a cross-section of a strobe light-emitting section 5g that locks the trigger contact piece 62 by contacting the light-emitting tube 21. The reflector umbrella cover 60 is made of the same material and shape as the reflector umbrella cover 55 described in the seventh embodiment, and has insertion holes 60a and 60b through which the trigger contact pieces 62 are inserted on the rear surface. . The reflector 61 has the same material and shape as the reflector 56 described in the seventh embodiment, and is provided with insertion portions 61a and 61b for inserting the trigger contact piece 62 at the rear end. The transmission window 27d closes the opening in front of the reflector umbrella cover 60, as described in the seventh embodiment.

The trigger contact piece 62 is a metal thin plate electrode member, and preferably has elasticity. The trigger contact piece 62 is formed by folding a single thin plate into two pieces and forming a U-shape. Both ends 62 a and 62 b are respectively inserted into the insertion holes 60 a and 60 b on the back surface of the reflector cover 60 and the reflector 61. As shown in FIG.
As shown in the schematic view of the side view of the reflector 61 in FIG. 4 (B), the tip of the end 62 a (and the end 62 b) is bent so as to open up and down, and is curved so as to engage with the outer periphery of the arc tube 21. Things. The outer periphery of the arc tube 21 is gripped by this curved portion,
It is separated from the rear end of the inner wall surface of the reflector and locked. FIG.
Illustrates a U-shaped trigger contact piece in which one thin plate is folded to form a double U-shape. However, one thin plate is formed in a U-shape, a slit is provided at an end end, and the upper and lower sides are opened. Alternatively, the locking portion of the arc tube 21 may be formed.

Arc tube 2 exemplified in Embodiments 6 to 8
Each of the trigger members for locking the flashlight 1 is held on the inner wall surface of the insertion hole to be inserted, or engages with a not-shown projection, groove, or the like provided on the outer wall surface of the reflector cover to strobe light emitting portion. 5 to fix the arc tube 21 so as not to move inside the reflector. Needless to say, these trigger members are connected to the strobe circuit 15 by conductive members such as lead wires (not shown).

In the sixth to eighth embodiments, the trigger member is formed in a substantially U-shape so as to be held in two directions (two places). Any material may be used as long as it can be locked away from the rear end of the mirror (the inner wall surface of the reflector) and is conductive and can withstand the heat generated by the arc tube. The material and the like are not limited to those exemplified here.

[Trigger Electrode Insertion Hole] Xe
Although it has been described that a trigger electrode is necessary when a tube is used, when the arc tube 21 is locked by a projection such as a reflector cover (made of resin), the light emitting (arc length) portion of the arc tube becomes conductive. It does not come into contact with the body members, inside the reflector,
That is, the trigger electrode must be brought into contact with the outer circumference (within the range of the arc length) of the arc tube 21 in the reflecting mirror. Therefore, the electrode members such as the trigger wire and the trigger contact piece are replaced with a reflector (reflector)
A reflector provided with an insertion portion to be inserted into the inside and brought into contact with an arc length portion of the arc tube will be described.

FIG. 15 is a perspective view showing a rear end portion on the back side of the reflector. The reflector 70a shown in FIG.
The reflector 70b shown in FIG. 5 (B) uses the same material as the reflector 26 described in Embodiment 1 and has the same general appearance. The reflecting umbrella 70a of FIG. 15 (A) is provided with insertion holes 71a and 71b of round holes as insertion portions at the rear end, and in each of the embodiments described so far, a trigger electrode required for the implementation is required. Insert the member. The two insertion holes 71a and 71b are connected to the arc tube 2
It is provided at a position within one arc length. Since the trigger electrode member is inserted from the outside of the reflector cover, the same one as the insertion hole shown here is also provided on the rear surface of the reflector cover.

The reflector 70b shown in FIG. 15B has a polygonal insertion hole provided in the reflector 70a, and the insertion holes 72a and 72b are hexagonal. The insertion holes 71a, 71b, 72 shown in FIG.
Due to their shapes, a and 72b are suitable for inserting a trigger wire, and the size of a hole (circular hole) required when the trigger wire is actually inserted has a radius of 0.3 mm to 5.0 mm from the center of the hole. The range is 0 mm. This is also the radius of the circumscribed circle (of the polygon) from the hole center in the case of a polygon.

FIG. 16 is a perspective view of a reflector having a long insertion hole. FIG. 16A is a perspective view of a reflector 70c provided with substantially rectangular long hole insertion holes 73a and 73b, and FIG. 16B is a diagram illustrating insertion holes 74a and 74b in which the edge of the long hole is formed in a semicircular shape. It is a perspective view of 70 d of reflectors provided with. When the trigger electrode is formed of a plate-like member, FIG.
As shown in FIG. 6, the insertion portion is formed in an elongated hole shape. When using an Xe tube as the arc tube 21, the longitudinal direction of the hole is 0.3 m.
m to 7.5 mm, hole width (transverse direction) 0.3 mm to 5.
The size becomes 0 mm. FIG. 16 shows a vertically long insertion portion at the rear end of the reflector 70c. This is because the trigger electrode is brought into contact with the arc tube so that the trigger electrode has elasticity. Depending on 8), it may be horizontally long.

The projections (holding projections) for locking the arc tube 21 described in the above embodiments are also inserted into the insertion holes at the rear end on the back side of the reflector as shown in FIGS. You. In this case, the shape and size of the hole are provided so that the protrusion can be inserted.

Until now, a plurality of trigger electrode insertion holes (2
FIG. 17 shows an example of a reflection umbrella provided. However, the trigger electrode only needs to be in contact with the Xe tube at any one place, so that strobe light emission is performed using the trigger electrode (trigger contact piece) shown in FIG. You may. FIG. 17A is a perspective view of the rear surface of the reflector 80, and one of a plate-shaped trigger contact piece 82a, a polygonal column-shaped trigger contact piece 82b, and a column-shaped trigger contact piece 82c,
The reflector 80 is inserted through an insertion hole 81 provided from the rear end portion 80a of the reflector 80 to the bottom portion 80b from the rear of the reflector 80, and is brought into contact with the rear of an arc tube (not shown).

FIG. 17B is a perspective view of the opening of the reflector 90. An insertion groove 91 is provided in the bottom surface portion 90a of the reflector 90 of the reflector 90 from the opening of the reflector 90 to the lower part of the arc tube not shown here, and as in the description of the reflector 80, trigger contact pieces 82a, 82b, Either 82c is inserted into the insertion groove 91 from the front of the reflector 90 and brought into contact with the front of the arc tube.

By providing the insertion portion for the trigger electrode in the reflector as described above, it is not necessary to make the arc length of the arc tube protrude outside the reflector, and the shape, dimensions, dimensions, etc. of the reflector are set. The degree of freedom can be increased. In addition, since the entire arc length of the arc tube can be arranged in the reflector, light can be emitted to the front of the reflector (reflector) without waste. The increased flexibility in setting the contact point between the trigger electrode and the arc tube allows the trigger electrode to be in contact with the anode or cathode of the arc tube, which emits a large amount of light. Irradiation can be performed without any loss due to the shadow of the object. In addition, since the trigger electrode can be brought into contact with the portion avoiding the long edge of the arc, a stable light emitting operation can be performed without being affected by a slight change in the position of the trigger electrode.

[Embodiment for Contacting Arc Tube with Reflector] Next, an embodiment in which the reflector is electrically connected to a strobe circuit and used as a trigger electrode will be described. By forming the reflector with a conductive member, it is not necessary to newly provide the trigger electrode, and therefore, it is not necessary to provide a through hole for the trigger electrode. In addition, the material and the general shape of each reflector to be described later are the same as those of the reflector 26 described in the first embodiment and the like, and as described in the first to fifth embodiments, the arc tube is a reflector. It is locked away from the rear end of the inner wall surface of the reflector by locking means provided on the cover or the like.

(Embodiment 1 of Reflective Umbrella) FIG.
Contact pieces 101a, 10a for applying a trigger voltage to the arc tube 21
It is a perspective view of the reflector 100 provided with 1b on the upper surface. The arc tube 21 inserted into the insertion portions 100a and 100b provided on the side walls of the reflector 100 has contact pieces 101a and 1b from above.
01b comes into contact with the light-emitting portion (within the range of the arc length), applies a light-emitting trigger, and positions the locking of the light-emitting tube 21. The substantially rectangular contact pieces 101a and 101b are
Cutouts 102a and 102b having substantially U-shape and two ends parallel to the arc tube 21 were formed on the upper surface of the 00, and were bent downward at right angles at the bent portions 102c and 102d to protrude into the reflector 100. Things. Contact piece 101a,
The position where 101b is provided is above the locking position of the arc tube 21 near the side wall of the reflector. Further, in order to stabilize the contact with the arc tube 21, a concave portion engaging with the outer periphery of the arc tube 21 is formed at the tip of the contact pieces 101 a and 101 b by the notch 102.
a, 102b. Here, the contact pieces 101a and 101b are formed on the upper surface of the reflector, but the contact pieces may be similarly formed on the lower surface of the reflector.

It is to be noted that a locking means similar to the locking means for the arc tube 21 described in the first to fifth embodiments is provided, and the arc tube 21 is pressed from below the reflector so as to press the arc tube 21 against the contact pieces 101a and 101b. By biasing to, the positioning and locking of the arc tube 21 can be performed more reliably.

(Embodiment 2 of Reflection Umbrella) FIG.
The contact piece 111a having the same shape, operation and effect as the contact pieces 101a and 101b shown in FIG.
It is a perspective view of the reflector 110 provided with 111b on the side of the reflector upper surface. Insertion section 110 for inserting arc tube 21
A concave portion is formed at the tip of each of the substantially rectangular contact pieces 111a and 111b protruding downward from above in the a and 110b. Also in this case, the contact pieces 111a and 111b are configured to come into contact with each other at the light emitting portion (within the arc length) of the arc tube 21. The contact pieces 111a and 111b may be formed integrally with the upper surface of the reflector 100 and bent downward, or may be formed integrally with the reflector sidewall. Contact pieces 111a, 111b shown here
Protrudes downward from above the insertion portion, but may protrude upward from below the insertion portion.

(Embodiment 3 of Reflector Umbrella) FIG. 19 is a perspective view of a reflector provided with a contact piece protruding from the upper surface (upper side) at the rear end of the reflector shown in FIG. FIG.
The perspective view of (A) is provided with notches 122a and 122b near the side of the rear end portion of the rear face of the reflector umbrella 120, in which two sides of both ends are parallel to the arc tube 21 in a substantially U-shape. 1
At 22d, the reflective umbrella is bent forward at a right angle to form a contact piece 121.
Reference numerals a and 121b protrude inside the reflector 120 (inside the reflector). Also in this case, the contact piece 121
Reference numerals a and 121b are configured so as to come into contact with each other at a light-emitting portion (within the range of the arc length) of the light-emitting tube 21. Contact piece 121
The positions where a and 121b are provided are in the vicinity of the reflector side wall and behind the locking position of the arc tube 21. Further, in order to stabilize the contact with the arc tube 21, a concave portion engaging with the outer periphery of the arc tube 21 is formed at the tip of the contact pieces 121 a and 121 b by the notch 1.
It is formed at 22a and 122b.

(Embodiment 4 of Reflection Umbrella) FIG.
A contact piece 131a having the same shape, action and effect as the contact pieces 121a and 121b shown in FIG.
It is a perspective view of 131 umbrella 130 provided with 131b at the rear end part side of a umbrella. Also in this case, the contact pieces 131a, 1
31b is a light emitting portion of the arc tube 21 (within the arc length).
It is configured to contact with. The distal ends of the substantially rectangular contact pieces 131a and 131b protruding forward from the rear in the insertion portions 130a and 130b through which the arc tube 21 is inserted are formed with concave portions so as to engage with the arc tube 21. These contact pieces 131a and 131b are formed integrally with the back of the reflector 130 and bent forward of the reflector.

The reflectors 120 and 130 shown in FIG.
A contact piece is provided at the rear end, and the arc tube 21 is pressed against the contact piece by being urged backward from the front of the reflector by the locking means described in the first to fifth embodiments,
Locked more securely.

(Embodiment 5 of Reflector Umbrella) FIG. 20 shows a state in which a concave portion 141a engaging with the arc tube 21 is provided at the rear end of the side wall portion 141 of the reflector umbrella 140, and the reflector 140 and the arc tube 21 are in contact with each other. FIG. The side wall portion 141
The light emitting tube 21 extends from the opening of the reflector umbrella 140 to a position where it comes into contact with the outer periphery of the arc tube 21 locked at a predetermined position (not only the entire outer periphery but also a part thereof). A concave portion 141a that engages with the outer periphery is provided. As described in the first embodiment and the like, the arc tube 21 is formed by the projections 142 provided on the reflection umbrella cover or the like.
It is locked away from the rear end of the inner wall surface. At this time, the projection 142 urges the arc tube 21 so as to push it forward of the reflector, and brings the arc tube 21 into contact with the concave portion 141 a of the side wall portion 141. Also in this case, the concave portion 141a is
(In the range of the arc length). Note that the protrusion 142 may be formed as a trigger electrode by being formed of a conductive member.

(Embodiment 6 of Reflective Umbrella) FIG.
Is a reflector 120 provided with two contact pieces at the rear end of the reflector.
But a reflector 15 provided with a contact piece at one position at the rear end.
0 is shown in FIG. FIG. 21 (A) is a perspective view showing the rear end of the reflector 150, and FIG. 21 (B) is a schematic view of a state where the arc tube 21 is inserted through the reflector 150 as viewed from the side.
As shown in FIG. 21A, the contact piece 155 provided at, for example, the central portion of the rear end of the reflector umbrella 150 has cutouts 152 and 154 having the same length in the vertical direction at the rear end thereof. The bent portions 151 and 153 provided between the upper end and the lower end of the two notches are bent into the reflector 150, and the wall surfaces between the notches 152 and 154 are curved so as to protrude into the reflector 150, It comes into contact with the rear of the arc tube 21 (within the range of the arc length serving as a light emitting portion) locked by locking means (not shown).

(Embodiment 7 of Reflector Umbrella) The contact piece 161 formed on the reflector 160 shown in the schematic diagram of FIG.
Folded portion 153 at the rear end of the reflector shown in FIG.
Are notches, so that notches 152, 153, 1
54 are connected in a U-shape, the substantially rectangular wall surface surrounded by these cutouts is bent from the bent portion 151 into the inside of the reflector, and the bent substantially rectangular contact piece 161 is stretched straight downward to obtain the reflector. It is projected inside and is brought into contact with the rear of the arc tube 21 (within the range of the arc length serving as a light emitting portion).

(Eighth Embodiment of Reflection Umbrella) FIG.
The contact piece 161 shown in FIG. 21C is formed in a substantially rectangular shape which is vertically long in the vertical direction, and is bent into the reflector like the bent portion 151 shown in FIG. It is a schematic perspective view of the reflector umbrella 170 which has the piece 171. FIG. 22 (B) shows that the arc tube 21 is inserted through the contact piece 1.
It is the schematic which shows the longitudinal cross section of the reflector 170 which made 71 contact. Also in this case, the contact piece 171 is
(In the range of the arc length). Contact piece 17 bent into said reflector
1 is formed so as to be a curve that smoothly contacts from the upper side to the front side along the outer periphery of the arc tube 21. The arc tube 21 locked by the locking means (not shown) is urged from the rear of the reflector to the front by the locking means, and is pressed against and contacts the curved inner wall surface of the contact piece 171. Further, by forming the contact piece 171 so as to cover the lower part of the outer periphery of the arc tube 21 (or the entire outer periphery to the rear of the arc tube 21), the contact piece 171 can also have an action of holding the arc tube 21.

By using a reflector having conductivity as the trigger electrode of the arc tube, the trigger electrode may deviate from the arc length range of the arc tube due to vibration or the like, as compared with the case where the trigger wire is brought into contact with the arc tube. The light emission operation can be reliably performed.

In each of the embodiments described above, the rear end of the horizontally long reflector is separated from the straight tube-shaped light emitting tube to improve the light distribution characteristics of the strobe light emitting unit 5 in the vertical direction. In this case, the light amounts near the upper end and the lower end of the irradiation range are made equal to those near the irradiation center.

[0077]

By separating the rear end of the reflector and the arc tube, the light distribution characteristics can be changed by the separation distance. Therefore, the light distribution characteristics by the outer diameter of the arc tube are determined by the separation distance. Can adjust the change of
Similar light distribution characteristics can be obtained with arc tubes having different outer diameters. In addition, since the light distribution characteristics required by the same reflector (reflector) can be obtained by adjusting the separation distance, the design flexibility of the reflector (reflector) is increased.

[Brief description of the drawings]

FIG. 1 is a schematic view of a conventional flash device in which an arc tube is inserted through a reflector.

FIG. 2 is a graph showing light distribution characteristics of the reflector and the arc tube of FIG.

FIG. 3 is a graph showing light distribution characteristics suitable for wide-angle shooting.

FIG. 4 is a perspective view showing the front of the camera 1 according to the embodiment of the present invention.

FIG. 5 is a perspective view showing the rear of the camera 1 according to the embodiment of the present invention.

FIG. 6 is a perspective view of a strobe light emitting unit 5 according to the first embodiment.

7 is an exploded perspective view of the strobe light emitting section 5 shown in FIG.

FIG. 8 is a schematic diagram of a strobe light emitting unit 5;

FIG. 9 is a schematic view of a strobe light emitting unit 5a.

FIG. 10 is a schematic diagram of a strobe issuing unit 5b.

FIG. 11 is a perspective view showing a state where a rear cover 3 of the camera 1 is removed.

FIG. 12 is a schematic diagram of strobe issuing units 5c and 5d.

FIG. 13 is a schematic view of strobe issuing units 5e and 5f.

FIG. 14 is a schematic diagram of a strobe issuing unit 5g.

FIG. 15 is a perspective view of the reflectors 70a and 70b.

FIG. 16 is a perspective view of the reflectors 70c and 70d.

17 is a perspective view of the reflectors 80 and 90. FIG.

FIG. 18 is a perspective view of the reflectors 100 and 110.

FIG. 19 is a perspective view of the reflectors 120 and 130.

FIG. 20 is a schematic view showing a state where the reflector 140 and the arc tube 21 are in contact with each other.

FIG. 21 is a schematic view showing reflectors 150 and 160.

FIG. 22 is a schematic view showing a reflector 170;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Camera 2 Front cover 3 Rear cover 5, 5a, 5b, 5c, 5d, 5e, 5f, 5g Strobe light-emitting part 6 Shooting lens 7 Finder window 8 Strobe switch actuator 9 Shutter release button 10 Film counter window 11 Charge confirmation window 12 Film winding knob 13 Finder eyepiece window 14 Guide groove 15 Strobe circuit 20, 26, 31, 36, 42, 46, 51, 56, 6
1, 70a, 70b, 70c, 70d, 80, 90, 1,
00, 110, 120, 130, 140, 150, 16
0, 170 Reflective umbrella 21 Arc tube 25, 30, 35, 50, 55, 60 Reflective umbrella cover 27, 27a, 27b, 27c Transmission window 40 Main body 52, 57 Trigger wire 62 Trigger contact piece 81 Insertion hole 91 Insertion groove 141 Side wall Part 142 Projection 151, 153 Folded part 152, 154 Notch 155, 161, 171 Contact piece

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) G03B 17/02 G03B 17/02

Claims (17)

[Claims] 1. A flash device comprising: an arc tube; a reflector for reflecting strobe light emitted from the arc tube to a subject; and a transmission window for covering an opening of the reflector and transmitting the strobe light. The strobe device according to any one of claims 1 to 3, further comprising a locking means for locking the arc tube away from a rear end portion of the inner surface of the reflector. 2. The locking means comprises a locking portion provided on a reflector covering member that covers the rear surface of the reflector, and locks an arc tube to the locking portion. The strobe device according to claim 1, wherein the strobe device is separated from the end. 3. A photographing apparatus comprising: a light emitting tube; a reflector for reflecting strobe light emitted from the light emitting tube toward an object; and a transmission window for covering an opening of the reflector and transmitting the light. A strobe device incorporated in a device, wherein a locking means for locking the arc tube away from a rear end portion of the inner surface of the reflector is provided on an inner wall surface of the photographing device. 4. An arc tube for emitting strobe light by a light emission trigger, a reflector for reflecting the strobe light emitted from the arc tube to a subject side, and a transmission window for covering an opening of the reflector and transmitting the strobe light. And a locking means for locking the arc tube to a trigger member for applying the light emission trigger and separating the arc tube from a rear end of the inner wall surface of the reflector. 5. A light emitting tube for emitting strobe light by a light emission trigger, a reflecting umbrella for reflecting the strobe light emitted from the light emitting tube toward a subject, and a transmission window for covering the opening of the reflecting umbrella and transmitting the strobe light. And a strobe device, wherein the reflector has an insertion portion through which a trigger member to be brought into contact with the arc tube is inserted. 6. The flash device according to claim 5, wherein the insertion portion is a circular or polygonal insertion hole provided on the back side of the reflector. 7. The flash device according to claim 6, wherein the insertion hole has a radius of 0.3 mm to 5.0 mm. 8. The strobe device according to claim 5, wherein the insertion portion is a substantially elliptical or substantially rectangular elongated hole provided on the back side of the reflector. 9. The flash device according to claim 8, wherein the insertion portion of the elongated hole has a width of 0.3 mm to 5.0 mm and a length of 0.3 mm to 7.5 mm. 10. The flash device according to claim 5, wherein the insertion portion is provided near a reflector opening in front of the arc tube inserted into the reflector. 11. A light emitting tube that emits a strobe light by a light emission trigger, a reflecting umbrella having a substantially rectangular opening at the front by reflecting the strobe light emitted by the light emitting tube toward a subject, and covering the opening of the reflecting umbrella. And a transmission window through which strobe light is transmitted. A strobe device. 12. The strobe device according to claim 11, wherein the contact piece is provided with a plurality of projections protruding downward from an upper surface of the reflector. 13. The strobe device according to claim 11, wherein the contact piece is provided with a plurality of projections protruding from a rear end portion of the inner wall surface of the reflector toward an opening. 14. The strobe device according to claim 11, wherein the contact piece is provided at a rear end portion of the side wall portion of the reflector. 15. The contact piece is formed by making two notches parallel to the back of the reflector and projecting a wall surface between the two notches into the reflector. The strobe device according to claim 11. 16. The contact piece has a substantially U-shaped notch formed in the back of the reflector, and a substantially rectangular wall surrounded by the notch is bent into the reflector to be positioned rearward of the arc tube. The strobe device according to claim 11, wherein the strobe device is formed by contacting. 17. The contact piece has a substantially U-shaped notch on the back surface of the reflector, and bends a substantially rectangular wall surrounded by the notch into the reflector to form an outer periphery of the arc tube. The strobe device according to claim 11, wherein the strobe device is formed by being curved along and contacting.