JP4053868B2 - Strobe device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a strobe device such as a digital still camera.
[0002]
[Prior art]
The strobe device is composed of components such as a flash discharge tube, a trigger coil, a switching element, and a capacitor. These components are mounted on a printed board and are electrically connected. The trigger coil is normally connected to the flash discharge tube via a trigger lead wire and applies a trigger voltage.
[0003]
However, since a high voltage is supplied to the trigger lead, it is necessary to take measures against noise and insulation against other electronic components. Pay attention to the wiring of the trigger lead when assembling the strobe device. As a result, the number of processes increases, causing a cost increase.
[0004]
Therefore, conventionally, after inserting the flash discharge tube into the opening of the reflecting shade, the reflecting shade is engaged and fixed to the optical panel, and the optical panel is engaged and fixed to the printed circuit board. In addition, a trigger contact piece is attached to the optical panel, and the connection between the main electrode and electrode contact piece of the flash discharge tube and between the trigger contact piece and the output end of the trigger coil are electrically connected to simplify the wiring work. The technique which aimed at is known (for example, refer patent document 1).
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 5-83738 (Claims 1 and 1 and 2)
[0006]
[Problems to be solved by the invention]
However, Patent Document 1 provides a notch for fixing an optical panel on a printed circuit board, a flash discharge tube including a reflective shade is attached to the notch, and a trigger coil mounted on the flash discharge tube and the printed circuit board. Are connected by a trigger contact piece. Therefore, it is known that a flash discharge tube and a trigger coil are incorporated into a printed circuit board and electrically connected to each other. However, electronic components such as a switching element and a capacitor for controlling the photoelectric amount are connected to the flash discharge tube and the trigger coil. At the same time, the unitization is not known.
[0007]
The present invention has been made paying attention to the above circumstances, and the object thereof is to make at least a flash discharge tube, a trigger coil, and a switching element as a unit and to make it compact and to simplify wiring and assembling. An object of the present invention is to provide a strobe device capable of improving workability.
[0008]
[Means for Solving the Problems]
In order to solve the above object, according to the present invention, at least constituent blocks such as a flash discharge tube, a trigger coil, and a switching element are arranged in a unit body made of an insulating material, and the constituent blocks are electrically connected to each other. A strobe device connected to and mounted on a main printed circuit board, which is provided in the unit main body and integrally protrudes from both ends of the discharge tube holding portion and a discharge tube holding portion for holding the flash discharge tube together with a reflective shade. A pair of opposing support legs that form a constituent block storage section, and a contact piece that is attached to one of the support legs and is electrically connected to one electrode of the flash discharge tube at one end. A first terminal having a terminal portion connected to the main printed circuit board at the other end and a first substrate holding portion protruding from the component block housing portion at the intermediate portion; Attached to the other of the holding legs, a contact piece electrically connected to the other electrode of the flash discharge tube at one end, and a second substrate holding portion protruding from the constituent block housing portion at the other end The second terminal, a sub-print board that is housed in the component block housing section and whose both ends are sandwiched and fixed by the first and second board sandwiching sections, and the flash discharge is mounted on the sub-print board. A trigger coil having a trigger contact piece electrically connected to a reflection shade of the tube, a switching element mounted on the sub-printed board and electrically connected to the flash discharge tube and the trigger coil, and one end portion of the switching coil Third and fourth terminals having terminal portions fixed to the sub printed circuit board in a state of being electrically connected to the trigger coil and the switching element and connected to the main printed circuit board at the other end. In a flash device, characterized in that Bei was.
[0009]
According to a second aspect of the present invention, the first and second substrate clamping portions according to the first aspect include a pair of tongue pieces that cause part of the first and second terminals, and the tongue pieces penetrate the support legs. And it protrudes in the said structural block storage part, and clamps a sub-printed board, It is characterized by the above-mentioned.
[0010]
According to the above-described configuration, the structural blocks such as the flash discharge tube, the trigger coil, and the switching element can be integrated into the unit main body, and these structural blocks are electrically connected to the terminals. Can do. Therefore, the strobe device can be easily mounted on the main printed circuit board by inserting the terminal portion of the terminal into the insertion hole of the main printed circuit board and soldering.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0012]
FIG. 1 is a perspective view of the strobe device, and FIG. 2 is a front view of the same. The unit main body 1 constituting the main body of the strobe device is integrally formed of an insulating material, for example, a synthetic resin material. The unit main body 1 has a flat rectangular shape, and a discharge tube holding portion 2 composed of a rectangular recess is provided on the upper portion of the unit main body 1. Support legs 3a and 3b are provided. Further, a back plate 4 is integrally provided between the support legs 3a and 3b, and a component lock storage portion 5 having an open front is formed.
[0013]
The discharge tube holding portion 2 is provided with a reflective shade 6 formed by bending an aluminum plate, and a flash discharge tube 7 such as a xenon lamp as a constituent block is mounted inside the reflective shade 6. Electrodes 7 a and 7 b are provided at both ends of the flash discharge tube 7, and the electrodes 7 a and 7 b protrude outward from both ends of the reflection shade 6.
[0014]
One support leg 3a of the unit body 1 is provided with a first terminal 8 as a plus terminal. As shown in FIGS. 3 (a) and 3 (b), the first terminal 8 is formed of a metal strip and has a contact piece 9 formed of a recess connected to one electrode 7a of the flash discharge tube 7 at one end. And the terminal portion 10 is provided at the other end. A bent portion 11 that bends in the width direction and a bent portion 12 that bends in the plate thickness direction are provided at an intermediate portion of the first terminal 8. Further, a first substrate clamping portion 13 made of a pair of raised and raised tongue pieces is provided between the bent portion 11 and the bent portion 12 of the first terminal 8 so as to protrude laterally.
[0015]
The upper part of the first terminal 8 above the bent portion 12 is fixed to the outer surface of the support leg 3a of the unit main body 1, and the bent portion 12 passes through the slit 14 provided in the support leg 3a to the inner side of the support leg 3a. Projecting downward from Further, the first substrate holding part 13 projects through the support leg 3 a and protrudes into the component block storage part 5.
[0016]
The other support leg 3b of the unit body 1 is provided with a second terminal 15 as a negative terminal. As shown in FIGS. 4A and 4B, the second terminal 15 is formed of a metal strip and has a contact piece 16 formed of a recess connected to the other electrode 7b of the flash discharge tube 7 at one end. And a second substrate holding portion 17 made of a pair of raised and raised tongue pieces is provided on the other end portion so as to protrude sideways. The second terminal 15 is fixed to the outer surface of the support leg 3 b of the unit main body 1, and the second substrate clamping part 17 penetrates the support leg 3 b and protrudes into the component block storage part 5.
[0017]
The contact pieces 9, 16 of the first and second terminals 8, 15 are electrically connected to the electrodes 7a, 7b of the flash discharge tube 7 by soldering. The first and second substrate holding portions 13 and 17 are opposed to each other, and the sub printed circuit board 18 stored in the component block storage portion 5 is disposed between the first and second substrate holding portions 13 and 17. Is supported. That is, the left and right edges of the sub-printed substrate 18 are clamped and fixed to the first and second substrate clamping units 13 and 17.
[0018]
A trigger coil 19 and a capacitor 20 are mounted on the upper surface of the sub printed circuit board 18, and a switching element 21 and a capacitor 22 are mounted on the lower surface of the sub printed circuit board 18. The trigger coil 19 is provided with first, second, and third electrodes 23a, 23b, and 23c. A trigger contact piece 24 is provided on the third electrode 23c.
[0019]
As shown in FIGS. 5A and 5B, the trigger contact piece 24 is provided with an engagement portion 25 that engages with the third electrode 3c at the base end portion, and a pair of spring properties at the distal end portion. The contact piece 26 is provided integrally. The contact piece 26 is elastically brought into contact with and electrically connected to the back surface of the reflective shade 6.
[0020]
Further, a signal contact piece 27 as a third terminal and a GND contact piece 28 as a fourth terminal are provided on the edge of the sub-printed circuit board 18. As shown in FIGS. 5A and 5B, the signal contact piece 27 is provided with a contact piece portion 29 that is separated from the lower surface of the sub-printed substrate 18 at the upper end portion. One end of the contact piece 29 is provided with a substrate holding portion 30 protruding upward, and the other end is provided with a terminal portion 31 protruding downward. The signal contact piece 27 has the substrate clamping portion 30 clamped and fixed to the edge of the sub-printed substrate 18 and is electrically connected to the switching element 21 by soldering.
[0021]
As shown in FIGS. 6A and 6B, the GND contact piece 28 is provided with a substrate clamping portion 32 that is clamped and fixed to the edge of the sub-printed substrate 18 at the upper end portion, and protrudes downward at the other end portion. A terminal portion 33 is provided. The GND contact piece 28 is electrically connected to the switching element 21 by soldering.
[0022]
Accordingly, the sub-printed circuit board 18 is provided with the first terminal 8, the signal contact piece 27 and the GND contact piece 28 so as to protrude downward, and these terminal portions 10, 31 and 33 are provided by the support legs 3 a and 3 b of the unit body 1. It protrudes downward. The terminal portions 10, 31 and 33 are inserted into the insertion holes 35 of the main printed circuit board 34, and the unit main body 1 is mounted on the main printed circuit board 34.
[0023]
According to the configuration described above, the structural blocks such as the flash discharge tube 7, the trigger coil 19, and the switching element 21 can be integrated into the unit body 1, and these structural blocks are electrically connected to the terminal. 8, 27, 28 can be connected. Therefore, the strobe device can be easily mounted on the main printed circuit board 34 by inserting the terminal portions 10, 31, 33 of the terminals 8, 27, 28 into the insertion holes 35 of the main printed circuit board 34 and soldering.
[0024]
In the above-described embodiment, the configuration blocks such as the flash discharge tube 7, the trigger coil 19, and the switching element 21 have been described. However, electronic components such as a capacitor and a resistance element can be mounted and electrically connected simultaneously. .
[0025]
【The invention's effect】
As described above, according to the present invention, at least the flash discharge tube, the trigger coil, and the switching element are unitized to be compactly configured, the wiring can be simplified, and the assembly workability can be improved. Therefore, a significant cost reduction can be achieved as compared with the prior art.
[Brief description of the drawings]
FIG. 1 is a perspective view of a strobe device according to a first embodiment of the present invention.
FIG. 2 is a front view of the strobe device according to the embodiment.
3A and 3B are a front view and a side view of the first terminal, showing the embodiment.
4A and 4B are a front view and a side view of a second terminal according to the embodiment.
5A and 5B are a front view and a side view of a trigger contact piece according to the embodiment.
6A and 6B are a front view and a side view of a signal contact piece according to the embodiment.
7A and 7B are a front view and a side view of a GND contact piece according to the embodiment.
FIG. 8 is an electric circuit diagram showing the embodiment;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Unit main body, 2 ... Discharge tube holding part, 3a, 3b ... Support leg, 5 ... Component block accommodating part, 6 ... Reflection shade, 7 ... Flash discharge tube, 8 ... 1st terminal, 13, 17 ... Substrate clamping Part 15 ... second terminal 18 ... sub printed circuit board 19 ... trigger coil 21 ... switching element

Claims (2)

A strobe device in which at least constituent blocks such as a flash discharge tube, a trigger coil, and a switching element are arranged in a unit body made of an insulating material, and the constituent blocks are electrically connected to each other and mounted on a main printed board,
A discharge tube holding portion provided in the unit main body and holding the flash discharge tube together with a reflective shade;
A pair of support legs, which are provided integrally projecting from both ends of the discharge tube holding part, and which form a constituent block housing part;
Attached to one of the support legs, a contact piece electrically connected to one electrode of the flash discharge tube at one end, a terminal portion connected to the main printed circuit board at the other end, and the intermediate portion A first terminal that protrudes into the component block housing portion to form a first substrate clamping portion;
A contact piece attached to the other end of the support leg, electrically connected to the other electrode of the flash discharge tube at one end, and a second substrate holding portion projecting from the constituent block housing portion at the other end. A formed second terminal;
A sub-printed board that is housed in the component block housing part, and whose both end parts are sandwiched and fixed between the first and second board sandwiching parts;
A trigger coil mounted on the sub-printed board and having a trigger contact piece electrically connected to a reflection shade of the flash discharge tube;
A switching element mounted on the sub-printed board and electrically connected to the flash discharge tube and the trigger coil;
Third and fourth terminals having one end fixed to the sub printed circuit board in a state of being electrically connected to the trigger coil and the switching element, and having a terminal connected to the main printed circuit board at the other end A strobe device characterized by comprising: The first and second substrate clamping portions are formed of a pair of tongue pieces that cause a part of the first and second terminals, and the tongue pieces penetrate the support legs and project into the component block storage portion. 2. The strobe device according to claim 1, wherein the sub printed circuit board is sandwiched.

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