JP2002229106A - Flash device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flash device constituted so that a degree of freedom in emitting a flash at macro-photographing may be enhanced, and also, the flash may be easily projected in a direction as a photographer intends. SOLUTION: The flash device is provided with a holder 3 which is mounted on the leading end of a lens barrel and equipped with several shoes on the outer periphery, an arm 4 which is connected to the shoe of the holder and which can be rotated in a plane including a photographing optical axis and also extended, and provided with a shoe at the leading end, and a flash emitting part 5 which is connected to the shoe arranged at the leading end of the arm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a flash device. More specifically, the present invention relates to a flash device having a light emitting unit attached to the tip of a lens barrel so that flash light is not kicked by the lens barrel during macro photography.

[0002]

2. Description of the Related Art As a flash device having a light-emitting unit arranged at the tip of a lens barrel, there have been known (1) a flash unit in which a light-emitting unit is fixed at the tip of a lens barrel, and (2) an upper part of a camera. There is known a device in which an arm is attached to a device, and a light emitting section is provided at the tip of the arm.

However, in the former configuration, since the light emitting portion is directly attached to the lens barrel distal end portion, the swing range is narrow, and the degree of freedom of flash emission is small. Also, in the latter configuration, the degree of freedom of flash emission is increased by using an arm, but since the arm extends from the top of the camera, it is difficult to make the optical axis of the light emitting unit intersect with the lens optical axis, As a result, there is a problem that it is difficult for the flash light to reach the intended position.

[0004]

SUMMARY OF THE INVENTION Accordingly, the technical problem to be solved by the present invention is to increase the degree of freedom of flash emission, particularly during macro photography, and to direct the flash light in the direction intended by the photographer. To provide a simple flash device, and a small flash device that is convenient to handle.

[0005]

Means, actions and effects for solving the problems The present invention provides
The present invention has been made in order to effectively solve the above-mentioned problem, and provides a flash device having the following features.

The flash device according to the present invention includes a "holder attached to the tip of the lens barrel and having a plurality of shoes on the outer periphery" and "connected to the shoes of the holder and rotatable in a plane including the photographing optical axis. An arm that is extendable and contractable and has a shoe at the tip ”and a“ flash light emitting unit connected to the shoe at the tip of the arm ”.

In the flash device of the present invention having the above-described structure, the flash light emitting section is located at the tip of the telescopic arm extending from the tip of the lens barrel. Can easily be made to cross the optical axis of the photographing lens. As a result, the degree of freedom of flash emission is increased, and it becomes easy to direct the flash light to a position intended by the photographer.

Further, according to the present invention, there is provided a flash system in which a flash control device attached to a camera body and the flash device are connected by a connection cord. In this flash system, a cord holding member that winds and holds a connection cord is detachably attached to a flash control device.

With this configuration, when the connection cord is removed from the flash control device, the connection cord can be removed together with the cord holding member holding the connection cord, which is convenient for handling.

Further, according to the present invention, there is provided a light emitting / diffusing device detachably attached to a front surface of a flash light emitting mechanism. This light-emitting diffusion device is composed of a translucent flexible sheet having a diffusing property with respect to transmitted light and having, at two opposing edges, an engagement portion detachably engaged with a flash light emission mechanism. Is done.

[0011] The light emitting and diffusing device having such a structure can be conveniently handled because the flexible sheet can be stored in a flat shape when detached from the flash light emitting mechanism.

Further, the light emitting / diffusing device may be constituted by combining the above-mentioned flexible sheet and an optical panel. The optical panel is detachably attached to the front of the flash light emission mechanism, and extends the light emission angle of the flash light emission. When the optical panel is combined, the flash light traveling distance required for expanding the flash light emission to a predetermined area is reduced, and the light emitting diffusion device can be reduced in size accordingly.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG . 1 is a block diagram showing an embodiment of the present invention; FIG. 1 is an overall perspective view showing a camera 1 equipped with a flash system according to the present invention. The flash system is configured by connecting a flash control device 2 detachably attached to the upper part of the camera 1 and a flash device 8 detachably attached to the tip of the lens barrel of the camera 1 with a connection cord 9.

The structure of the flash device The flash device 8 comprises a holder 3, an arm 4, and a flash light emitting unit 5. A telescopic arm 4 is attached to a holder 3 attached to the tip of the lens barrel, and a flash light emitting unit 5 is attached to the tip.

The fixed adapter holder 3 is composed of a fixed adapter 310 fixed to the tip of the lens barrel, and a holder ring 320 connected to the fixed adapter so as to be rotatable relative to the fixed adapter. FIG. 3 (a)
Shows a fixing adapter 310, and FIG. 3 (b) shows a sectional view of a diameter portion thereof. The fixed adapter 310 is a ring-shaped member, and has a small-diameter screw portion 311 and a large-diameter engagement groove 311.
12 and has. As shown in the main part sectional view of FIG.
The fixed adapter 310 is fixed to the tip of the lens barrel 11 by screw-engaging the screw portion 311 with a corresponding screw portion provided at the tip of the lens barrel 11. Are linked.

The holder ring Figure 4 (a) shows a front view of the holder ring 320, and FIG. 4 (b)
Shows a rear view thereof. The holder ring 320 can be connected to the fixed adapter 310 while pressing the push buttons 321a and 321b. That is, when the push buttons 321a and 321b are pressed inward,
The four engaging claws 326a to 326d provided on the rear side retract radially outward. In this state, the inner diameter portion 320a of the holder ring is aligned with the outer diameter portion 310a of the fixed adapter, and when the push button is released, the engagement claws 326a to 326d of the holder ring project into the engagement groove 312 on the outer periphery of the fixed adapter, and both of them are moved. Are linked.

The engaging claws 326a to 326d press against the bottom of the engaging groove 312 to prevent the fixed adapter 310 and the holder ring 320 from rotating relative to each other. That is, the engagement claws 326a-3
26d is a lock mechanism for preventing relative rotation, and the bush buttons 321a, 321b are operating parts thereof. By pressing the push buttons 321a and 321b, the user can rotate the holder ring 320 relative to the fixed adapter 310, and thereby can set the position of the flash light emitting unit 5.

On the outer periphery of the holder ring 320, four arm mounting shoes 325a to 325d are provided. In the illustrated example, the shoes 325a to 325d are formed integrally with the holder ring 320. However, the arm mounting shoe as a separate member may be fixed to the holder ring 320 using a screw or the like. That is, in the present invention, the arm mounting shoe only needs to be immovable with respect to the holder ring 320. The use of integral molding has advantages such as a reduction in the number of parts and a reduction in the number of manufacturing steps.

Each arm mounting shoe is a holder ring 320
Multiple arms on the holder ring 320
When mounted on the arm, the reproducibility of the angular distance between the arms is high. In addition, since the holder ring 320 as a whole is relatively rotated with respect to the fixed adapter 310, the entire arm group can be rotated while maintaining high reproducibility of a plurality of arm intervals, which is convenient for photographing.

The telescopic arm 4 is connected to an arm mounting shoe on the holder ring 320. The arm 4 is configured to be telescopic by combining two elongated members in a telescopic manner, and can hold an arbitrary length by utilizing friction. As can be seen from FIG. 2, one end of the arm 4 has a holder ring 320
A connection table 41 connected to the upper shoe is provided. Since the connection table 41 is connected to the arm body via the pins 42, the arm 4 can rotate in a plane including the photographing optical axis while being attached to the holder ring 320.

The arm 4 rotates about the pin 42, but a concave / convex engaging portion (not shown) is provided in the arm at a predetermined angular pitch, and the angular position of the arm can be set stepwise. it can. At this time, it is preferable to set not only the normal use angle range but also an angle position not used at the time of photographing. By adopting such a configuration, even when an unexpected external force is applied to the arm, the arm itself can be prevented from being damaged by rotating the arm.

A light emitting unit mounting shoe 45 is provided at the extensible distal end of the arm 4, and the flash light emitting unit 5 is mounted on the shoe 45. It is preferable to use the flash light emitting unit 5 having a light emitting unit 52 that can rotate with respect to a connection base 51 to the shoe 45. This makes it possible to adjust the light emitting direction of the flash with a higher degree of freedom.

It is preferable that the connecting portions of the arm mounting shoes 325a to 325d provided on the holder ring 320 and the light emitting unit mounting shoe 45 provided on the arm 4 have the same shape. In this case, the connection portions of the connection base 41 on the arm side and the connection base 51 on the flash light emitting unit necessarily have the same shape. When such a configuration is adopted, the flash light emitting unit 5 can be arbitrarily attached to either the tip of the arm 4 or the outer peripheral portion of the holder ring 320. In this case, a special adapter or the like is required. do not need.

Number of Shoes Provided on Holder Ring It is preferable that a plurality of arm mounting shoes be provided on the holder ring 320, two of which are appropriately selected and two arms are mounted. Thereby, the degree of freedom of flash writing is increased. The number of shoes is 2
One, three, or more may be provided. Hereinafter, a case in which four shoes are provided will be described.

The holder ring 320 shown in FIG. 4 is provided with four arm mounting shoes 325a to 325d. The first shoe 325a and the second shoe 325b are
It is arranged above with a central angle of 180 °. The third shoe 325c is arranged at a central angle of 45 ° from the first shoe 325a, and the fourth shoe 325d is arranged at the first shoe 325a.
Are arranged at a position opposite to the third shoe 325c at a central angle of 45 ° from the third shoe 325c.

When the four arm mounting shoes 325a to 325d arranged as described above are employed, the holder ring
When two arms are attached to 320, select appropriate two shoes and set the center angle between both arms to 45 °, 90 °, 135 °, and 180 ° with the basic pitch of 45 °. There is an advantage that it can be set arbitrarily.

FIG. 13 schematically shows an arrangement example of an arm mounting shoe having the same advantages. Positions 1 and 2 separated by a central angle of 180 ° in the vertical direction in FIG. 13 are arrangement positions of the first shoe and the second shoe. The third shoe is disposed at a position 3 separated by a central angle of 45 ° from the first shoe. And as shown by the broken-line circle, the fourth shoe is
It is arranged at any of the four positions 4a to 4d. That is, a position 4a or 4b separated from the first shoe by a central angle of 90 ° to either of the left and right sides, and a position 4c or 4 separated from the third shoe by a central angle of 90 ° to either of the left and right sides.
d. An arrangement example having a mirror image relation to the arrangement in FIG. 13 may be adopted.

FIG. 5 shows another example of the arrangement of the four arm mounting shoes. In this example, with respect to the first shoe 325a and the second shoe 325b arranged at a central angle of 180 ° on the holder ring 320, the third shoe arranged at a central angle of 30 ° from the first shoe. A shoe 325c and a fourth shoe 325d disposed at a position opposite to the third shoe 325c with a central angle of 60 ° from the first shoe are employed.

When the four arm mounting shoes 325a to 325d arranged as described above are employed, the holder ring
When attaching two arms to the 320, select the appropriate two shoes and set the central angle between the two arms to a basic pitch of 30 °, 30 °, 60 °, 90 °, 120 °, 150 ° There is an advantage that it can be arbitrarily set to five types.

FIG. 14 schematically shows an arrangement example of an arm mounting shoe having the same advantages. Positions 1 and 2 separated by a central angle of 180 ° in the vertical direction in FIG. 14 are arrangement positions of the first shoe and the second shoe. The third shoe is arranged at a position 3 separated by a central angle of 30 ° from the first shoe. And as shown by the broken-line circle, the fourth shoe is
The third shoe is arranged at any one of two positions 4a and 4b separated by a central angle of 90 ° on either of the left and right sides.
An arrangement example having a mirror image relation to the arrangement in FIG. 14 may be adopted.

Although two arms are attached to the holder ring 320 in the illustrated example, a configuration in which three or more arms are attached may be adopted.

Push Button as Operating Member In the holder ring 320 shown in FIGS. 4 and 5, the first shoe 325a and the second shoe 325b are arranged on the holder ring 320 at a 180 ° central angle. , Two push buttons 321a and 321 which are operation parts of the lock mechanism
b is also arranged on the holder ring 320 with a central angle of 180 °. And a straight line connecting both push buttons,
A straight line connecting the first and second shoes is substantially orthogonal to each other. This is to improve operability when rotating the holder ring 320 to which the arm is attached.

Flash System Next, the detachable code reel 200 attached to the flash control device 2 will be described. Code reel 200
Wraps and holds the extra length of the connection cord 9,
This is to prevent loosening.

The flash device 8 is connected to the flash control device 2 using a connection cord 9. The connection cord 9 extends from the flash light emitting unit 5 and is provided on a connector connection portion 21 provided on the upper front surface of the flash control device 2.
(See FIG. 1). Therefore, the code reel 20
When the flash device 8 is detachable from the camera 1, the connection cord detached from the connector connection portion 21 can be stored while being wound around and held on the code reel 200 when the flash device 8 is detached from the camera 1, which is convenient for handling. .

The specific structure of the cord reel 200 as the cord holding member is not particularly limited as long as it can wind and hold the connection cord 9.
A specific configuration will be described with reference to FIGS.

Code Reel The code reel 200 shown in FIG. 6 is detachably fixed to an engaging projection 23 provided on a side surface of the flash control device 2. The code reel 200 is formed by integrally molding a plastic material, and is formed by connecting two pillar portions 201 facing each other at a predetermined interval by a connecting plate 203. Each column 201 is formed with a flexible elastic engagement projection 201a. In FIG. 6, when the cord reel 200 is pressed against the flash control device 2 in the direction of the arrow, the tip protrusion of the elastic engagement projection 201a engages with the engagement projection 23 on the flash control device side with a click feeling. With this, the code reel 200
Is fixed to the side surface of the flash control device 2.

At both ends of the connecting plate 203, protruding plates 202 extending beyond the column 201 are provided. The protruding plate 202 extends along the flash control device surface when the code reel 200 is fixed to the flash control device 2. Also,
At the other end of each column 201, a flange 205 is provided.

As shown in FIG. 1, the connection cord 9 is wound around two opposing pillars 201 and is held between the protruding plates 202 and the flange 205 at both ends of each pillar. A radially extending slit 205a is formed in the flange portion 205. By passing the connection cord 9 through the slit 205a, it is possible to prevent the flange 205 from being accidentally detached from the code reel 200.

As shown in FIG. 1, the connection cord 9 has a curl structure on the side connected to the flash light emitting unit 5 and a straight structure on the side connected to the connector section 21 of the flash control device 2. Are preferred. By using the connection cord 9 having such a configuration, it is possible to easily wind the connection cord 9 around the code reel 200 and effectively prevent the connection cord 9 from being loosened in the vicinity of the light emitting unit 5.

Modification of Code Reel FIG. 7 shows a modification of the code reel. In the example of FIG. 6, the code reels 200 are individually mounted on both sides of the flash control device 2, but in the example of FIG.
The two cord reels 200 ′ are connected by an elastic belt 210. Each cord reel 200 'is fixed to the flash control device using the pulling force of the belt 210. That is, the opening 203a provided in the connecting plate 203 of one of the code reels 200 'is hooked on the engaging protrusion 23' on the side surface of the flash control device, and the other code reel 200 'is stretched while the belt 210 is stretched.
Is similarly hooked on the engaging projection 23 '. As a result, FIG.
As shown in (1), each cord reel 200 'is fixed to both side surfaces of the flash control device 2 by the belt 210 in a tightened state. For other functions of the code reel 200 '
This is the same as the code reel 200 in FIG. Although not shown, the two cord reels and the telescopic belt may be completely integrally formed from plastic or the like, thereby reducing the number of parts and thereby reducing the cost.

The light emitting diffuser Next, with reference to FIG. 9, illustrates a light-emitting diffuser 600 attached to the front of the flash unit 5. The light emitting diffusion device 600 includes a wide panel 6 detachably fixed to the front surface of the light emitting unit 5 and a diffusion sheet portion 7 detachably connected to the wide panel 6. In addition,
As will be described later, the wide panel 6 may be omitted, and the diffusion sheet portion 7 may be directly attached to the front surface of the light emitting unit 5. That is, the light emitting / diffusing device can be constituted only by the diffusion sheet portion 7.

The wide panel 6 is a U-shaped member in which mounting plates 62 are provided on both sides of a light-transmitting plate 61, and a projection 62 a provided inside the mounting plate 62 is provided with a concave portion 55 on the side surface of the light emitting unit 5. Is fixed to the front surface of the light emitting unit 5. The light-transmitting plate 61 is formed with knurled irregularities, whereby the irradiation angle of the flash light from the light emitting unit 5 is increased. In FIG. 9, a part of the knurled unevenness is omitted for simplicity.

FIG. 10 (a) shows the diffusion sheet 7 removed from the wide panel 6, and FIG. 10 (b) shows the diffusion sheet 7 attached to the wide panel 6. FIG. 3 is a sectional view taken along line A. The diffusion sheet 71 is a thin translucent flexible sheet having diffusivity for transmitted light,
An engagement member 72 is provided at the two opposite edges. That is, when the diffusion sheet portion 7 is detached from the wide panel 6, the diffusion sheet portion 7 can be developed in a flat plate shape, which is convenient for carrying and storing. When attaching to the wide panel 6, the diffusion sheet 71 is rolled into a cylindrical shape. In addition, the diffusion sheet 71 is provided with an engaging member by an appropriate means such as an adhesive.
Connected to 72. The engaging member 72 is an elongated rod-shaped member, and is fixed to the wide panel 6 by engaging concave portions 72a formed along the longitudinal direction thereof with both end edges of the light transmitting plate 61 of the wide panel.

As can be understood from the above description, even when the light emitting / diffusing device is constituted only by the diffusion sheet portion 7, there is an effect that it is convenient for carrying and storing. However, by combining the diffusion sheet portion 7 and the wide panel 6 to form a light-emitting diffusion device, a greater effect can be obtained as described below. In the case where the light emitting / diffusing device is constituted only by the diffusion sheet portion 7, portions to be engaged with the engaging members 72 provided at both ends of the diffusion sheet 71 are provided in the light emitting unit 5.

Light emission diffusion with “wide panel + diffusion sheet”
Merits of Constructing the Device Next, the merits of composing the light emitting / diffusing device by combining the wide panel 6 and the diffusion sheet section 7 will be described with reference to FIGS. 11 and 12. FIG. FIG. 11 is an explanatory view of a case where only the diffusion function of the diffusion sheet 71 is used without expanding the irradiation angle of the flash light emission. FIG. FIG. 4 is an explanatory diagram in the case where a diffusion function of a diffusion sheet 71 is used.

In general, there is a certain light source area required as a diffuser, and the area "S" is the same as that in FIG.
Same for 12 When the irradiation angle of the flash emission is increased by using the wide panel (FIG. 12), the area of the flash light is actually "S" compared to the case where the irradiation angle is not increased (FIG. 11).
, The travel distance of the flash light required to spread the light to a shorter distance becomes shorter. Since the diameter of the diffusion sheet 71 which has been rounded into a cylindrical shape can be reduced by an amount corresponding to the reduction in the distance, the light emitting / diffusion device can be configured to be compact by that amount.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire flash system according to the present invention.

FIG. 2 is a cross-sectional view of a main part of the camera of FIG. 1 along a photographing optical axis.

FIG. 3 is an explanatory view of a fixed adapter.

FIG. 4 is an explanatory view of a holder ring.

FIG. 5 is an explanatory view showing another example of the holder ring.

FIG. 6 is an explanatory diagram showing a code reel according to the present invention.

FIG. 7 is an explanatory diagram showing another example of a code reel.

FIG. 8 is an explanatory diagram showing a state in which the code reel of FIG. 7 is attached to a flash control device.

FIG. 9 is an exploded perspective view showing a light emitting diffusion device according to the present invention.

FIG. 10 is an explanatory diagram of a diffusion sheet portion in the light emitting diffusion device of FIG. 9;

FIG. 11 is an explanatory diagram of a case where a light-emitting diffusion device is configured using only a diffusion sheet.

FIG. 12 is an explanatory diagram of a case where a light emitting diffusion device is configured by combining a diffusion sheet and a wide panel.

FIG. 13 is an explanatory view showing an example of the arrangement of arm mounting shoes on a holder ring.

FIG. 14 is an explanatory view showing an example of the arrangement of arm mounting shoes on a holder ring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Camera 2 Flash control device 3 Holder 4 Arm 5 Flash light emission unit 6 Wide panel 7 Diffusion sheet part 8 Flash device 9 Connection cord 11 Lens barrel 21 Connector part 23 Engagement projection 41 Connection base 42 Pin 45 Lighting unit mounting shoe 51 Connection stand 52 Light emitting part 55 Depression 61 Translucent plate 62 Mounting plate 62a Projection 71 Diffusion sheet 72 Engaging member 72a Depression 200 Code reel 201 Column 201a Elastic engagement projection 202 Projection plate 203 Connection plate 203a Opening 205 Flange 205a Slit 310 Fixing adapter 311 Screw part 312 Engagement groove 320 Holder ring 321a, b Push button 325a-d Arm mounting shoe 326a-d Engagement claw 600 Light emitting diffuser

 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Hidehiko Fujii 2-3-13 Azuchicho, Chuo-ku, Osaka-shi, Osaka Inside Osaka International Building Minolta Co., Ltd. 2-13, Machicho Osaka International Building Minolta Co., Ltd. F-term (reference) 2H053 CA12 CA14 CA15 CA21 CA23 CA24 CA26 CA32 DA04 2H105 CC03 EE22 EE23

Claims (14)

[Claims] 1. A holder attached to the distal end of a lens barrel and having a plurality of shoes on its outer periphery, connected to the shoe of the holder, and rotatable and extendable in a plane including an imaging optical axis. An arm with a shoe, a flash emitting unit connected to the shoe at the tip of the arm,
A flash device comprising: 2. The flash device according to claim 1, wherein the shoe on the outer periphery of the holder and the shoe on the tip of the arm have the same connection portion shape. 3. The holder comprises: a fixed adapter fixed to the tip of the lens barrel; and a holder ring connected to the fixed adapter so as to be rotatable relative to the fixed adapter. 3. A lock mechanism fixedly mounted on the holder ring, wherein the holder ring is provided with a lock mechanism for selectively prohibiting or allowing relative rotation of the holder ring with respect to the fixed adapter. Flash device. 4. The flash device according to claim 3, wherein the shoe on the outer periphery of the holder is formed integrally with the holder ring. 5. The apparatus according to claim 1, wherein three shoes are provided on the outer periphery of the holder, and two arms are selectively attached to two of the shoes. A flash device according to claim 1. 6. The apparatus according to claim 1, wherein four shoes are provided on the outer periphery of the holder, and two arms are selectively attached to two of the shoes. A flash device according to claim 1. 7. The first shoe and the second shoe are arranged on the holder ring at a central angle of 180 °, and are arranged at a central angle of 45 ° from the first shoe. A third shoe, and a fourth shoe arranged at a central angle of 90 ° from the first shoe or at a central angle of 90 ° from the third shoe, The flash device according to claim 6. 8. The first shoe and the second shoe are arranged on the holder ring at a central angle of 180 °, and are arranged at a central angle of 30 ° from the first shoe. 7. The flash device according to claim 6, comprising a third shoe, and a fourth shoe disposed at a 90 [deg.] Central angle from the third shoe. 9. The lock mechanism according to claim 1, wherein
Operated by two push buttons arranged at a center angle of 0 °, a straight line connecting the two push buttons and a straight line connecting the first and second shoes are substantially orthogonal to each other. 9. The flash device according to claim 7, wherein 10. A flash device according to claim 1, further comprising: a flash control device which is attached to the camera body and has a connector for detachably attaching a connection cord extending from the flash device. A flash system, wherein a code holding member for winding and holding a connection cord is detachably attached to the flash control unit. 11. The cord holding member includes two pillars facing each other at a predetermined interval, and one end of each pillar has a surface on the flash control device when the code holding member is attached to the flash control device. 11. The flash system according to claim 10, wherein a plate-like member extending along the first member is provided, and a flange portion provided with a slit for receiving the connection cord is provided at the other end. 12. The flash system according to claim 11, wherein said connection cord has a curl structure on a flash device side portion and a straight structure on a connector portion side of a flash control device. . 13. A light emitting / diffusing device detachably attached to a front surface of a flash light emitting mechanism, said light emitting / diffusing device has a diffusing property for transmitted light, and has two opposing edges.
A translucent flexible sheet having an engaging portion that is detachably engaged with the flash light emitting mechanism. The flexible sheet is attached to the front surface of the flash light emitting mechanism in a state where the flexible sheet is rolled into a cylindrical shape. A light-emitting diffusion device, characterized in that: 14. A light emitting / diffusing device detachably mounted on a front surface of a flash light emitting mechanism, wherein the light emitting / diffusing device is detachably mounted on a front surface of the flash light emitting mechanism,
An optical panel that expands the emission angle of flash light emission, and has a diffusivity for transmitted light, and has two opposing edges,
A translucent flexible sheet having an engagement portion detachably engaged with the optical panel, wherein the flexible sheet is attached to the optical panel in a state of being rounded into a cylindrical shape. A light-emitting diffusion device.