JP2001042394A - Stroboscopic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stroboscopic device capable of saving a space, capable of attaining a large light amount and also good light distribution characteristics with a small number of parts. SOLUTION: The device is provided with a xenon tube 19 for emitting light when a voltage is applied, and a W-side reflector 16 which is formed so as to become slightly wider than a prescribed shape and for reflecting the light emitted from the xenon tube 19, and the W-side reflector 16 is held at at least one position between the opening end 16-1 of the W-side reflector 16, the light emitting tube holding part 16-3 for holding the xenon tube 19 and the opening end 16-1 so that the reflector 16 may be formed to the prescribed shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flash device.

[0002]

2. Description of the Related Art Conventionally, various strobe devices have been used in cameras. For example, in Japanese Patent Application Laid-Open No. 10-186466, the reflector is held in a predetermined shape by a holding member between the arc tube holding portion and the opening end of the reflector.

[0003]

In order to increase the amount of light from the strobe, the depth of the reflector must be increased to increase the size of the housing, and it is necessary to increase the accuracy of the entire reflector.

However, Japanese Patent Application Laid-Open No.
In the prior art including the publication No. 6466, since the reflector is not held between the arc tube holding portion of the reflector and the opening end of the reflector, it is difficult to improve the accuracy of the foam with the reflector having a deep depth. Becomes

The present invention has been made in view of such problems, and an object of the present invention is to provide a strobe device capable of obtaining a large amount of light and good light distribution characteristics with a small number of parts without taking up space. To provide.

[0006]

In order to achieve the above object, a strobe device according to a first aspect of the present invention is formed with an arc tube that emits light when a voltage is applied, and a light emitting tube that is slightly wider than a predetermined shape. A reflecting umbrella for reflecting light from the arc tube, at least one between an opening end of the reflecting umbrella and an arc tube holding portion for holding the arc tube of the reflecting umbrella and the opening end.
The reflective umbrella is held at the location so as to have the predetermined shape.

[0007] Further, a strobe device according to a second aspect of the present invention comprises:
An arc tube that emits light when a voltage is applied, a reflector corresponding to the arc tube and formed so as to be slightly wider than a predetermined shape, and a light transmitting member that covers the front surface of the reflector and transmits light. And the light transmitting member has an opening end of the reflector and
The reflective umbrella is held in the predetermined shape at at least one location between the arc tube holding portion for holding the arc tube and the opening end of the reflector.

[0008] A strobe device according to a third aspect of the present invention includes:
A light-emitting tube that emits light when a voltage is applied thereto, and an opening for emitting light, a light-reflecting surface that is continuous with the arc-tube holding portion that holds the light-emitting tube, and the opening that is continuous with the curved surface. Reflector umbrella formed to be slightly wider than a predetermined shape consisting of a plane forming a part, and supporting the opening end,
And a holding member for supporting the curved surface portion.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic view of a camera to which a strobe device according to the present invention is applied. As shown in FIGS. 1A and 1B, the strobe device 100 is provided above the camera.
The figure shows a state in which a strobe device having a tele side (hereinafter referred to as T side) reflector 15 and a wide side (hereinafter referred to as W side) reflector 16 has popped up.

FIG. 2 is an exploded perspective view showing an exploded state of each element of the strobe device.

In FIG. 2, the T-side trigger coil 11 is
The terminals 11A and 11B are inserted into openings 12A and 12B provided in a contact portion 12-3 which is a portion extending from a base portion of the flexible 12 on which the GND pattern 12-1 is provided. At a predetermined position. The W-side trigger coil 13 has terminals 13A,
13B is arranged at a predetermined position on the flexible 12 by being inserted into openings 12C and 12D provided in the contact portion 12-2 which is a portion extending from the base portion of the flexible 12. The flexible 12 to which the T-side trigger coil 11 and the W-side trigger coil 13 are attached is disposed on a receiving base 10 as a holding member made of a thermoplastic resin.

A xenon (Xe) tube 19 as an arc tube whose surface is coated with a conductive coating is inserted into the T-side reflector 15 made of aluminum through openings 21A and 21B of a rubber band 21. The lead wire connected to the electrode 11C of the T-side trigger coil 11 is soldered to the T-side reflector 15. Lead wires 50A and 50B are connected to both ends of the xenon (Xe) tube 19, respectively.

Similarly, a xenon (Xe) tube 20 having a surface coated with a conductive coating is connected to an opening 22 of a rubber band 22.
A and 22B are inserted into the W-side reflector 16 made of aluminum. The W-side reflector 16 has a W-side trigger coil 13.
The lead wire connected to the electrode 13C is soldered.
The rubber bands 21 and 22 may have different shapes. Lead wires 51 are provided at both ends of the xenon (Xe) tube 20.
A and 51B are respectively connected.

A T-side reflector 15 into which a xenon (Xe) tube 19 is inserted, and a W into which a xenon (Xe) tube 20 is inserted.
The side reflector 16 is made of an acrylic transparent member (light transmitting member), and is attached to a window member 17 having a portion through which light beams from the xenon tubes 19 and 20 pass. This window member 1
On the surface of 7, a Fresnel lens 17-1 is formed. Also, as can be seen from the figure, the above-described T-side reflector 1
5 and the side of the W-side reflector 16 are xenon tubes 19 and 20
Is wider from the part where the is inserted toward the window member 17.

FIG. 3 is a cross-sectional view showing a state in which the components of the above-described strobe device are assembled.

The same components as those described in FIG. 2 are denoted by the same reference numerals. In FIG.
The exterior part 14, the pedestal 10, the window member 17, and the decorative plate 18 form a housing having a space necessary for accommodating each element of the strobe device. The cradle 10 has portions 10A, 10B, and 10C extending into the internal space of the housing.
The window member 17 is made of a T-side reflector 15 and a W-side reflector 1.
6 and has an intermediate positioning portion 17A as a projection extending into the internal space of the housing. The width of the W-side reflector 16 increases from the arc tube holder 16-3 toward the window member 17;
At -2, the frontage is narrowed. That is, in the W-side reflector 16, the internal light reflecting surface is constituted by a curved surface continuous from the arc tube holder 16-3 and a flat surface forming an open end 16-1 continuous with the curved surface.

On the other hand, the cross section of the T-side reflector 15 has a divergent shape in which the frontage becomes larger from the arc tube holder 15-3 toward the window member 17 side.

The flexible 12 is bent from the bottom of the cradle 10 to a part of the surface of the extending portion 10B through the extending portion 10A so as to substantially conform to the surface shapes of the extending portions 10A and 10B. After being disposed and extending to near the tip of the intermediate positioning portion 17A of the window member 17, the exterior portion 1
4 and extends to almost reach the inner wall of the exterior portion 14.

Due to the shape of the receiving base 10 and the window member 17 and the arrangement of the flexible member 12, the internal space of the housing is formed by the T-side trigger coil 11, the W-side trigger coil 13, and the T-side reflector 1
5, four spaces for arranging the W-side reflector 16 are formed.

For example, the T-side trigger coil 11 is housed in a first space formed by the inner wall of the exterior part 14 and the pedestal 10 including the extending part 10A. Further, the W-side trigger coil 13 is housed in a second space formed by the inner wall of the exterior part 14, the extending parts 10A and 10B, and the flexible 12. The T-side reflector 15 into which the xenon (Xe) tube 19 is inserted is housed in a third space formed by the inner wall of the window member 17 and the intermediate positioning portion 17A, the inner wall of the cradle 10, and the extending portion 10B. Is being held. Further, the W-side reflector 1 into which the xenon (Xe) tube 20 is inserted.
Reference numeral 6 is stored and held in the fourth space formed by the inner wall of the window member 17, the intermediate positioning portion 17A, the inner wall of the exterior portion 14, and the flexible 12.

When the W-side reflector 16 is not housed in the housing, it is slightly wider than the shape shown in FIG.
When housed in the housing, the opening end 16-1 of the window member 17 is formed by the intermediate positioning portion 17 </ b> A, the tip positioning portion 17 </ b> B, and the middle and tip positioning portions 17 </ b> C.
And at least one portion (the intermediate portion 16-2 in the figure) between the opening end 16-1 and the arc tube holding portion 16-3 to have a shape as shown in the figure.

On the other hand, when the T-side reflector 15 is not housed in the housing, it is slightly wider than the shape shown in FIG.
When housed in the housing, between the intermediate positioning portions 10D and 10E forming the receiving base 10, the tip positioning portions 17D and 17E forming the window member 17, and the arc tube holding portion 15-3. At at least one of the positions shown in FIG. Further, a plurality of intermediate positioning portions 10D and 10E constituting the receiving table 10 are provided.

Further, as shown in FIG. 4A, the extending portion 10B of the receiving base 10 as a holding member is
Has a staircase shape on the side in contact with the outer surface of the A. As a result, as shown in FIG.
To F (the open end 15-1 of the T-side reflector 15).
And it is positioned by line contact with the cradle 10 at a plurality of locations between the arc tube holder 15-3 and the opening end 15-1 of the T-side reflector 15).

FIG. 5 shows the T-side reflector 15
Fig. 7 shows another example of positioning of the position. Here, cradle 1
5A has a plurality of protrusions as shown in FIG. 5A, so that the T-side reflector 15 has portions A to C (T-side reflectors) as shown in FIG. 5B. The open end 15-1 of the umbrella 15 and the arc tube holder 15- of the T-side reflector 15
3 and a plurality of locations between the opening end 15-1). Here, there are one point contact point at point A, two points at point B, and three points at point C, and the opening end 15-1 of the T-side reflector 15 rather than the arc tube holder 15-3 side.
There are more on the side. At the open end 15-1, the xenon tube 10 is held at three positions (a portion indicated by C) at both ends and substantially at the center in the length direction. FIG.
(C) is a perspective view of the cradle 10 viewed from the opening end of the reflector.

According to the above-described embodiment, a large amount of light and good light distribution characteristics can be obtained with a small number of parts without taking up space. Further, it is not necessary to improve the accuracy of the entire reflector umbrella as in the conventional case, but only the accuracy of a part of the form is required.

The invention having the following configuration is extracted from the specific embodiment described above.

Supplementary Note 1 An arc tube which emits light when a voltage is applied, a reflector corresponding to the arc tube and formed to be slightly wider than a predetermined shape, and a holding member for holding the reflector in a predetermined shape The holding member holds the reflective umbrella at an open end of the reflective umbrella and at least one location between the open end of the reflective umbrella and the open end that holds the arc tube. A strobe device having a plurality of projections.

Supplementary Note 2 An arc tube that emits light when a voltage is applied, a reflector corresponding to the arc tube and formed to be slightly wider than a predetermined shape, and a holding member that holds the reflector in a predetermined shape Wherein the holding member has an opening end of the reflector and at least one portion between the opening end and an arc tube holder for holding the arc tube of the reflector, the length of the arc tube is A strobe device comprising a holding member that makes line contact with the reflector in a direction.

(Supplementary Note 3) The reflector has a shape in which the width in the length direction of the arc tube increases from the arc tube holding portion toward the opening end. 2. The strobe device according to claim 1, wherein the number of openings on the side of the reflector is larger than that on the side of the arc tube holder.

Appendix 4 The strobe device according to appendixes 1 and 3, wherein the holding member holds the reflector at at least three places in the longitudinal direction of the arc tube at the opening end of the reflector.

(Supplementary Note 5) The holding member is an opening end of the reflector, and the reflector is at least substantially at the center in the length direction of the arc tube.
The strobe device according to any one of appendices 3 and 4, wherein the strobe device is held at both ends.

Supplementary Note 6 An arc tube that emits light when a voltage is applied, a reflector corresponding to the arc tube and formed so as to be slightly wider than a predetermined shape, and a light-transmitting light that covers the front surface of the reflector and transmits light A light-transmitting member, the light-transmitting member having an opening end of the reflector and at least one portion between the opening end and an arc tube holding portion that holds the arc tube of the reflector. A strobe device, wherein the reflector is held in the predetermined shape.

(Supplementary note 7) The strobe device according to Supplementary note 6, wherein the light transmitting member adjusts light distribution of the strobe device.

(Supplementary note 8) The strobe device according to Supplementary notes 6 and 7, wherein a Fresnel lens is integrally formed with the light transmitting member.

[0036]

According to the present invention, there is an effect that a large amount of light and good light distribution characteristics can be obtained with a small number of parts without taking up space.

Further, it is not necessary to increase the accuracy of the entire reflector umbrella as in the prior art, and it is only necessary to increase the accuracy of some of the forms.

[Brief description of the drawings]

FIG. 1 is a schematic view of a camera to which a strobe device according to the present invention is applied.

FIG. 2 is an exploded perspective view showing an exploded state of each element of the strobe device.

FIG. 3 is a cross-sectional view showing a state where the components of the strobe device are assembled.

FIG. 4 is a view for explaining one method of positioning the T-side reflector 15 by the receiving table 10;

FIG. 5 is a view for explaining another method of positioning the T-side reflector 15 by the receiving table 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... receiving stand, 11 ... T side trigger coil, 12 ... flexible printed circuit board (flexible), 13 ... W side trigger coil, 15 ... T side reflector, 15-1 ... open end, 15-3 ... arc tube holding part Reference numeral 16: W side reflector, 16-1: Open end, 16-2: Intermediate part, 16-3: Arc tube holder, 17: Window member, 18: Decorative plate, 19, 20: Xenon (Xe) tube , 21, 22 ... rubber band.

Claims (3)

[Claims] 1. An arc tube that emits light when a voltage is applied thereto, and a reflector that is formed so as to be slightly wider than a predetermined shape and reflects light from the arc tube. And a strobe device for holding the reflector so as to have the predetermined shape at least at one position between an arc tube holding portion for holding the arc tube and the opening end of the reflector. 2. An arc tube which emits light when a voltage is applied thereto, a reflector corresponding to the arc tube and formed so as to be slightly wider than a predetermined shape, and a front surface of the reflector and which transmits light. A light transmitting member,
The light transmitting member comprises an opening end of the reflector and at least one location between the opening end and an arc tube holding portion for holding the arc tube of the reflector, the reflector is provided with the reflector. A strobe device characterized by being maintained in a predetermined shape. 3. An arc tube to which light is emitted when a voltage is applied, a curved surface having an opening for emitting light, and a light reflecting surface being continuous from an arc tube holding portion for holding the arc tube; A reflecting umbrella formed so as to be slightly wider than a predetermined shape consisting of a plane forming the opening portion continuous with the opening portion, and a holding member that supports the opening portion and supports the curved surface portion. Characteristic strobe device.