JPH066335Y2 - Camera with built-in flash - Google Patents

Description

TECHNICAL FIELD The present invention relates to a camera with a built-in strobe, and more particularly to a camera with a built-in strobe in which a light emitting portion of a built-in strobe device can be moved within a camera body.

2. Description of the Related Art Conventionally, various built-in strobe cameras with built-in strobe devices have been put to practical use, and in recent years, the light emitting section of the built-in strobe device has been changed by changing the focal length of the photographing lens.
Cameras that can move in the optical axis direction of the lens have also appeared.

Considering the configuration of the light emitting unit in the camera with a built-in strobe as described above, it is desirable that the light emitting unit be small and lightweight. Normally, the circuit configuration for generating the electric energy required to generate the discharge tube is inside the camera body. Therefore, some sort of connecting means for making an electrical connection between the discharge tube and the circuit is required.

A lead wire is extremely common as an electrical connecting means, but in the case of moving the light emitting portion as described above, a structure using only the lead wire for supplying emission energy or trigger energy, that is, a lead In the structure in which the wire is directly connected to a predetermined portion of the discharge tube, attention must be paid to the treatment of the lead wire when the light emitting part is moved.

In other words, it is obvious that the lead wire bends and stretches when the light emitting part moves, so that it acts as a load, which gives an undesired force to the discharge tube. There is a risk of contact and contact, which may cause inconvenience such as making the movement of the light emitting unit itself heavy.

On the other hand, as a structure for transmitting necessary electric energy without directly connecting a lead wire to a predetermined portion of the discharge tube, the method described in Japanese Utility Model Publication No.
A discharge tube device as shown in FIG. 5 disclosed in No. 2-3899 is known.

As is clear from FIG. 5, such a device has elastic first and second contact pieces 6 having insertion holes 5 through which the electrodes 3 and 4 of the discharge tube 2 are inserted on the substrate 1. 7 is fixed, and a conductive plate 8 serving as a trigger electrode is attached to the contact pieces 6 and 7.
The discharge tube 2 to which is fixed is attached.

The conductive plate 8 has a third elastic force which is fixed to the substrate 1.
The contact piece 9 of is abutted.

Therefore, the discharge tube 2 includes the first, second, and third contact pieces 6, 7,
The elastic force of 9 attaches to the substrate 1 in a state resistant to vibration, impact, etc., and the lead wire necessary for supplying electric energy may be connected to the substrate 1. As a result, the influence of bending of the lead wire does not directly affect the discharge tube 2.

Problems to be Solved by the Invention In the above proposed device, since the lead wire is not directly connected to the discharge tube as described above, the influence on the discharge tube due to bending and stretching of the lead wire can be suppressed.

However, there is no disclosure as a moving light emitting unit in the camera with a built-in strobe as described at the beginning.

Therefore, considering it as a moving light emitting unit of a camera with a built-in strobe, it requires members such as first, second, and third contact pieces, and also requires a fixing member for each contact piece and a fixing operation. Therefore, there are problems in that the number of parts is large and the configuration is complicated, and the size is reduced.

The present invention has been made in view of the above points, and provides a camera with a built-in strobe having a light emitting unit suitable for a moving light emitting unit, which has a simple structure with a small number of parts and is advantageous for downsizing. The purpose is to do.

A camera with a built-in strobe according to the present invention comprises a flash discharge tube which consumes the charging energy of a main capacitor to emit light, and a reflector which has an opening through which the flash discharge tube is inserted and which is made of a conductor. A housing made of an insulating material having an opening through which the flash discharge tube is inserted and having a housing recess for housing the reflector, and a back surface of the reflector inside the housing recess and an inner surface of the housing. A spring member made of a conductor that is sandwiched between the housing, one end of which is in contact with the reflector and the other end of which is projected outside the housing; and the housing and the reflector that are provided so as to cover the outer surface of the housing. A lead wire electrically connected to the main electrode of the flash discharge tube inserted through the opening and the end portion of the spring member protruding outside the housing, and also electrically connected to the main capacitor and the like. The frame It is configured to include a light emitting unit including a kisible printed circuit board.

Action Since the camera with a built-in strobe according to the present invention is constructed as described above, the discharge tube has the elastic force of the spring member acting through the reflector and the main electrode casing in a relationship against this elastic force. By the connection with the flexible printed circuit board, it is securely fixed to the above-mentioned housing in a state resistant to vibration and the like.

Furthermore, by connecting one end of the spring member protruding to the outside of the housing to the flexible printed board, it is electrically connected to the flexible printed board.

Embodiment FIG. 1 is an exploded perspective view showing a main part of an embodiment of a camera with a built-in strobe according to the present invention, that is, a structure of a light emitting portion.

As is clear from the figure, this embodiment is a flash discharge tube in which a well-known trigger electrode made of a transparent conductive film is formed on the outer surface of the metal member, which is a conductor having a high reflection efficiency such as aluminum. A reflector 10 that has an opening 10a through which 11 is inserted and is brought into contact with the trigger electrode, an opening 12a for inserting a flash discharge tube 11 similar to the reflector 10 and a housing in which the reflector 10 is housed. A housing 12 having a recess 12b is provided.

On the inner surface of the housing 12, there is formed a mounting portion 12c in which a spring member 13 made of a conductor that is sandwiched between the housing and the reflecting umbrella 10 and has one end 13a in contact with the reflecting umbrella 10 is arranged. A hole 12d is formed so that the other end 13b of the reflector 13 which is not in contact with the reflector 10 is projected to the outside of the housing 12.

The outer surface of the casing 12 has a main electrode 11a of the flash discharge tube 11 attached to the reflector 10 housed in the housing recess 12b with the spring member 13 sandwiched between itself and the openings 10a, 12a of the casing. Conductor portions 14a, 14 connected to 11b
b and the flexible printed circuit board 14 formed in a substantially U shape having a conductor portion 14c connected to one end 13b of the spring member 13 protruding to the outside of the housing 12.

In this embodiment, a recess is formed around the opening 12a of the housing 12 so as to be recessed from the outer surface of the housing 12 and where the conductor portions 14a and 14b of the flexible printed circuit board 14 are located.

First, the light emitting portion having the above-described structure is provided with the spring member 1.
3 is placed in the mounting portion 12c of the housing 12, and then the flash discharge tube 11 is inserted into the housing 12 and the opening 1 of the reflecting umbrella 10 while the reflecting umbrella 10 is housed in the housing recess 12b of the housing 12.
2a, 10a, and then the conductor portions 14a, 14b, 14c of the flexible printed circuit board 14 and their corresponding portions, that is, the main electrodes 11a, 1 of the flash discharge tube 11.
It is completed by soldering 1b and one end 13b of the spring member 13 protruding to the outside of the housing 12.

FIG. 2 is a cross-sectional view showing a state in which the light emitting portion completed as described above is incorporated in a frame body 15 provided in a camera body (not shown), and the light emitting portion is in the frame body 15. In the drawing, it means moving to the left and right.

As is apparent from FIG. 2, the conductor portions 14 a and 14 b of the flexible printed circuit board 14 have openings 1 of the housing 12.
2a located in the recess provided around the main electrode 11
The soldering parts a and 11b are soldered so as not to project from the side wall of the housing 12, and the soldering part does not hinder the movement of the light emitting part in the frame 15.

In addition, since the conductor portions 14a and 14b are in contact with the side wall of the housing 12, the movement of the flash discharge tube 11 in the longitudinal direction is controlled and the position is regulated.
In order to perform the position regulation more reliably, it is preferable to provide a bushing (not shown) that holds the flash discharge tube 11 and can contact the outer wall of the reflector 10.

Moreover, since the flexible printed circuit board 14 is arranged on the outer surface of the housing 12 in the light emitting section, the emission energy and the trigger signal can be supplied to the flash discharge tube 11 through the circuit board 14. In the present embodiment, the electrical connection between the substrate 14 and the electric circuit section of the strobe device (not shown) is made by a plurality of lead wires 16 as shown.

In other words, since the flash discharge tube 11 and the electric circuit section can be connected via the flexible printed circuit board 14, the connection point of the lead wire to the board 14 is, for example, the above-described movement operation of the light emitting section. It will be possible to appropriately select and determine a place that does not have a bad influence.

Further, since the lead wire 16 is not directly connected to the flash discharge tube 11, the lead wire 16 is not moved when the light emitting part is moved.
The influence of bending and stretching does not directly affect the discharge tube 11.

FIG. 3 is a transverse sectional view corresponding to FIG. 2 showing another embodiment of the camera with a built-in strobe according to the present invention.
The same reference numerals as those in FIG. 2 indicate the same functional members.

As is clear from the drawings, this embodiment shows that the housing 12
A protruding piece 12e that comes into contact with the flexible printed circuit board 14 is provided on the back surface of the board, and an appropriate space X is formed on the back surface of the board 14 and the housing 12 by the protruding piece 12e, and the space X is electrically connected to the built-in flash device. Of the circuits, at least a well-known trigger circuit unit 17 is arranged.

Conventionally, if the wiring between the output end of the trigger circuit and the trigger electrode of the flash discharge tube is lengthened, not only the trigger signal will be attenuated but the trigger signal itself will adversely affect other electric circuits in the camera body and cause malfunction. It is known that the embodiment shown in FIG. 3 takes such a point into consideration. That is, the flash discharge tube 11 and the trigger circuit unit 1
7 and 7 are fixed to the housing 12 so as to be close to each other, and the above wiring is shortened.

FIGS. 4 (a) and 4 (b) are an exploded perspective view and a cross sectional view corresponding to FIGS. 1 and 2 showing still another embodiment of the camera with a built-in strobe according to the present invention, and FIG. , The same reference numerals as those in FIG. 2 indicate the same functional members.

In this embodiment, as is apparent from the drawings, the housing 12 has an opening having a shape different from that of the previous embodiment, that is, an opening 12a 'through which the flash discharge tube 11 having an open portion is inserted. Since the opening 12a 'is adopted, the positioning of the flash discharge tube 11 with respect to the housing 12 in the longitudinal direction becomes unstable, so that the bushing 18 is provided.

That is, when the housing 12 is resin-molded by adopting the opening 12a 'as shown in the figure, the mold can have a simple structure, but the conductor portion 14a of the flexible printed board 14 described in the previous embodiment, If an attempt is made to satisfy the relationship that the soldered portions of 14b and the main electrodes 11a and 11b of the flash discharge tube 11 do not protrude from the outer surface of the housing 12, the conductor portions 14a and 14b and the sidewalls of the housing 12 in the above example are satisfied. Since it becomes impossible to regulate the position of the flash discharge tube 11 in the longitudinal direction, which has been performed by the contact with the flash discharge tube 1,
That is, the bushing 18 having a shape capable of holding 1 and contacting the outer side wall of the reflector 10 is used.

It should be noted that the opening 12a 'as shown in FIG.
Also in the case of forming the above, if a concave portion that is recessed from the outer surface of the housing 12 is provided around the concave portion, and the shape of the conductor portions 14a and 14b of the flexible printed circuit board 14 is formed so as to correspond to the concave portion, it is used for position regulation. The use of the bushing will be omitted.

The embodiment shown in FIGS. 4 (a) and 4 (b) has the housing 12 as described above.
Although the cost can be expected to be reduced, the space between the main electrode 11a and 11b of the reflector 10 and the flash discharge tube 11 provided with a bushing 18 and its mounting location is also seen. The reflecting umbrella 1 also has a function of lengthening the distance and is accompanied by the miniaturization of the light emitting portion.
0, the effect of preventing erroneous discharge at the time of trigger operation due to the proximity of the main electrodes 11a and 11b can be expected, which is extremely practical.

Effect of the Invention In the flash built-in camera according to the present invention, the flash discharge tube is fixed to the housing via the spring member and the flexible printed circuit board, so that it is not necessary to prepare a large number of independent contact piece members and their fixing members. This has the effect of reducing the number of parts.

Therefore, it is possible to expect an effect that the structure is simple and the size is reduced.

Further, since the flash discharge tube and the electric circuit are electrically connected via the flexible printed circuit board, it is possible to connect the necessary lead wire to an appropriate portion of the board in consideration of the influence of bending and stretching of the lead wire. It is also possible to expect an effect of preventing an adverse effect due to bending and stretching of the lead wire.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a light emitting part which is a main part of an embodiment of a camera with a built-in strobe according to the present invention, and FIG. 2 is a cross-sectional view showing a state in which the light emitting part of FIG. Third
FIG. 4 is a transverse sectional view corresponding to FIG. 2 showing a light emitting portion which is a main part of another embodiment of the built-in flash camera according to the present invention.
FIGS. 1A and 1B are an exploded perspective view and a cross-sectional view corresponding to FIGS. 1 and 2 showing a light emitting portion which is a main part of still another embodiment of the camera with a built-in strobe according to the present invention. . FIG. 5 is a front view showing a conventional discharge tube device. 10 ... Reflector, 11 ... Flash discharge tube, 12 ... Housing,
13 ... Spring member, 14 ... Flexible printed circuit board, 15 ... Frame body, 16 ... Lead wire, 17 ... Trigger circuit section, 18 ... Bushing.

Front page continued (72) Inventor Hirohiko Ina 2-995 Nagara Higashi, Oyodo-ku, Osaka City, Osaka Prefecture West Electric Co., Ltd. (72) Kunio Tsuji 2-995 Nagara Higashi, Oyodo-ku, Osaka City, Osaka Prefecture Issue West Electric Co., Ltd. (72) Inventor Hajime Mitsui 2-995 Nagara Higashi, Oyodo-ku, Osaka City, Osaka Prefecture West Electric Co., Ltd. (72) Takashi Ogawa 2-chome, Nagara Higashi, Oyodo-ku, Osaka, Osaka Prefecture No. 95 inside West Electric Co., Ltd.

Claims (6)

[Scope of utility model registration request] 1. A flash built-in camera including a flash discharge tube, a reflector, a spring member, a housing, and a flexible printed circuit board, the flash built-in camera having a light emitting unit that can move within the camera body. It emits light by consuming the charging energy of the main capacitor, the reflector has an opening made of a conductor and is connected to the trigger electrode of the flash discharge tube, and the spring member is elastic. The flexible printed circuit board is formed of a conductor having a force, is made of an insulating material, and has an insertion opening for a flash discharge tube, a mounting portion for a spring member, a hole, and a recess for accommodating a reflector. The spring member is provided so as to cover the outer surface of the body, and when the spring member is mounted on the mounting portion, one end of the spring member comes into contact with the reflective umbrella between the rear surface of the reflective umbrella inside the storage recess and the inner surface of the housing. The flexible printed circuit board is inserted into the housing and the opening of the reflector, and the end portion of the main member of the flash discharge tube inserted into the opening of the housing and the end of the spring member protruding to the outside of the housing. And a camera with a built-in flash that is connected to at least the lead wire for supplying energy that connects the main capacitor and the flash discharge tube. 2. A utility model in which a housing is provided with a projecting piece that comes into contact with a flexible printed circuit board, and a component forming a trigger circuit for triggering a flash discharge tube is arranged in a space formed by the projecting piece and the flexible printed circuit board. The camera with a built-in flash according to claim (1) of the registration claim. 3. The utility model registration claim, wherein the casing has a recess around the opening in which the conductor portion of the flexible printed circuit board electrically connected to the main electrode of the flash discharge tube is located.
The camera with a built-in flash described in (1). 4. The camera with a built-in flash according to claim 1, wherein the opening of the housing has an open portion. 5. The camera with a built-in strobe according to claim (1), wherein the flash discharge tube is provided with a bushing near the main electrode for restricting its longitudinal position with respect to the housing. 6. The camera with a built-in strobe according to claim (1), wherein the flexible printed circuit board is molded into a substantially U-shape.