JP2003344911A - Stroboscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stroboscope whose reflecting umbrella is connected to the trigger transformer by an easy and string connection means. <P>SOLUTION: The stroboscope is characterized by providing the reflecting umbrella 101 formed by folding a conductive thin plate so as to enclose the back face and the vertical and horizontal sides of a light emitting discharge tube, and also to partly come into contact with a discharge tube, a lead wire connection protruding piece 102 formed extending outward from either of the vertical and horizontal edge parts of the reflecting umbrella, a substrate 104 on which the conductive signal lines 106 are arranged, a trigger transformer 103 which is arranged on the substrate and generates a trigger signal, and a conductive connection means 107 for connecting the trigger signal output terminal 103a of this trigger transformer to the protruding piece 102 via the signal lines 106. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strobe device, and more particularly, to a connection structure between a reflector and a trigger signal output terminal for applying a trigger voltage in the strobe device.

[0002]

2. Description of the Related Art Conventionally, a reflector for applying a trigger voltage (light emitting signal) to a light emitting discharge tube in a strobe device and irradiating light emitted from the light emitting discharge tube toward a subject is well known. Various means for connecting the trigger electrode portion formed on the above-mentioned and the trigger signal output terminal formed on the trigger transformer have been proposed by Japanese Patent Laid-Open No. 523551/1993.

By the way, in recent years, in order to prevent lead poisoning of soldering workers and when electronic parts are discarded, acid rain causes the solder contained in the product to melt and lead, which is a harmful metal, flows out. Since it has become a big problem that it is a part of environmental pollution, lead-free solder, which is a mixture of several kinds of Ag, Cu, Bi, Zn, etc., has been mainly used as a solder used for connection.

[0004]

However, when the lead-free solder is used in the connecting means between the reflector and the trigger transformer in the strobe device variously proposed in Japanese Patent Laid-Open No. 5-232551, etc., when the lead-free solder is used, The lead-free solder has a drawback that the connection strength is lowered because it has poor wettability as compared with the conventional lead solder.

The object of the present invention has been made in view of the above circumstances, and has means for easily and firmly connecting the reflector and the trigger signal output terminal of the trigger transformer in the strobe device. To provide a strobe device.

[0006]

In order to achieve the above-mentioned object, a strobe device according to the present invention is a strobe device for irradiating a subject with strobe light.
A conductive thin plate is wrapped around the back and top, bottom, left and right sides of the light emitting discharge tube, and part of it is in contact with the discharge tube. Attached to a printed wiring board on which a signal line connecting projecting piece formed by extending outward from either end edge portion and a conductive signal line are arranged,
A trigger transformer for generating a trigger signal, a means for connecting a trigger signal output terminal of the trigger transformer to the signal line, and a conductive connecting means for connecting the protruding piece to the signal line to which the output terminal is connected. It is characterized in that it is provided, and the conductive connection means is means for connecting the signal line and the protruding piece by soldering.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing the back side of a reflector in a strobe device.

As shown in FIG. 1, the main part of the strobe device is a strobe electric circuit (not shown) including a reflector 101, a light emitting discharge tube 105, a signal line connecting projecting piece 102, and a trigger transformer. ) And is composed of. The reflector 101 is for reflecting the light emitted from the light emitting discharge tube 105 toward a predetermined irradiation range, and is a single conductive thin plate having a glitter property such as aluminum. Is formed by bending so that the front surface is open and the longitudinal section is semi-elliptical. That is, the top surface 101d, the bottom surface 101e, and the one side surface 101
f, the other side surface 101g, the back surface 101c, and the front opening 101
and a discharge tube disposing portion 101a for holding the discharge discharge tube 105 is provided on the inner surface side of the back surface 101c.
One side surface 101f and the other side surface 10 facing both ends of 1a.
On the back side of 1g, a semi-circular cut portion 101 that supports both ends of the discharge tube 105 in cooperation with the arrangement portion 101a.
b, 101b are formed.

FIG. 2 is a development view of the reflector 101 formed by punching out one conductive thin plate as described above. The bending shown by the two-dot chain line in the development view shown in FIG. What is processed along the line is the above-mentioned reflector 101
Becomes

When the light-emitting discharge tube 105 is arranged in the discharge tube arrangement portion 101a, the back side of the outer wall thereof contacts the inner surface of the back portion of the reflector 101, so that a trigger from a trigger transformer (not shown) is used. Voltage (light emission signal) reflector 10
1 to the discharge tube 105.

The signal line connecting protrusion 102 is formed integrally with the reflector 101, and the reflector 1
A signal line 10 to be described later for applying the trigger voltage to the light emitting discharge tube 105 is formed by extending outward from the edge of the bottom surface 101e of the front opening 101h of 01.
6 (see FIG. 4).

In this embodiment, the protruding piece 1 is used.
Although 02 is formed to extend outward from the edge of the bottom surface 101e, it may be formed to extend outward from the edge of any of the upper, lower, left, and right surfaces of the reflector 101.

FIG. 3 is a perspective view of the trigger transformer 103 attached to the printed wiring board 104 in the strobe device according to the embodiment of the present invention.

As shown in FIG. 3, the trigger transformer 103
Is fixed on, for example, the back surface of the printed wiring board 104 on which the electric circuit of the strobe is arranged.
Trigger signal output terminal 103 formed of a pin penetrating through
a projects from the surface of the substrate 104.

The trigger signal output terminal 103a protruding from the surface of the substrate 104 is connected to one end of a conductive signal line 106 provided by printing on the surface of the substrate 104, as shown in FIG. . In addition, the projecting piece connecting land 106a is provided at the other end of the signal line 106.
Are formed.

FIG. 4 is a perspective view showing a connection state between the reflector and the trigger transformer in the strobe device according to the embodiment of the present invention. As shown in FIG. 4, the reflector 101 and the trigger transformer 103 are provided on the substrate 104 with the protruding piece 102 formed so as to protrude outward from the end edge portion of the reflector 101. Lead-free solder 107 is used to connect to the protruding piece connecting land 106a. With this connection, the reflector 101 is connected to the trigger signal output terminal 103a of the trigger transformer 103 via the projecting piece 102 and the signal line 106.

The signal line 106 is made of a conductive metal and is provided on the surface of the substrate 104. The connection land 106a with the projecting piece 102 is made of a metal so as to facilitate solder connection. It is formed so as to be exposed on the surface. Therefore, the protruding piece 102 can be soldered extremely easily.

As described above, the connecting means between the reflector and the trigger transformer in the embodiment of the present invention is the reflector 1 described above.
01 and the trigger transformer 103, the substrate 104
Since they are connected by the signal line 106 formed above, there is no need to use a trigger lead wire as in the conventional case, the structure of the strobe device can be simplified, and the cost can be reduced. Further, since the lead-free solder 107 is used to connect the protruding piece 102 and the signal line 106,
Since it is not necessary to use solder containing lead, which is a harmful substance, and the connection is made through the T-shaped projecting piece 102 having a small connection area formed by projecting outward from the reflector. Since it is difficult to diffuse heat and can be connected more firmly than the direct connection to the reflector, it is possible to improve the reliability of the connection strength, and it is possible to provide a connection means compatible with environmental protection.

[0019]

As described above, according to the present invention, it is possible to provide a strobe device which can easily and firmly connect the reflector and the trigger transformer in the strobe device.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing the back side of a reflector in a strobe device,

2 is a development view of a reflector in the strobe device of FIG. 1,

FIG. 3 is a perspective view showing an example of the arrangement of trigger transformers in the strobe device according to the embodiment of the present invention;

FIG. 4 is a perspective view showing a connection state between a reflector and a trigger transformer in a strobe device according to an embodiment of the present invention.

[Explanation of symbols]

101 ... Reflective umbrella 102 ... Projecting piece for signal line connection 103 ... Trigger transformer 103a ... Trigger signal output terminal 104 ... substrate 105 ... Light emitting discharge tube 106 ... Signal line 106a ... Land for connecting protruding pieces 107 ... Lead-free solder (conductive adhesive means)

Claims (2)

[Claims] 1. In a strobe device for irradiating a subject with strobe light, a thin conductive plate is wrapped around the back surface and upper, lower, left, and right side surfaces of the discharge discharge tube, and a part of the discharge tube is in contact with the discharge tube. A bent umbrella, a signal line connecting projecting piece extending outward from one of the upper, lower, left and right edges of the reflective umbrella; and a conductive signal line. A trigger transformer which is mounted on the printed wiring board and which generates a trigger signal; a means for connecting the trigger signal output terminal of the trigger transformer to the signal line; and the protruding piece connected to the output terminal. A strobe device, comprising: a conductive connection unit connected to the signal line. 2. The strobe device according to claim 1, wherein the conductive connection means is means for connecting the signal line and the protruding piece by soldering.