JP2951841B2 - Camera with built-in movable strobe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal structure of a strobe of a camera of a type in which a strobe light emitting portion is moved back and forth to collect strobe light at different distances.

[0002]

2. Description of the Related Art A camera is provided with a strobe for adjusting an exposure amount, and as this strobe, there is a strobe which changes an irradiation angle in accordance with photographing conditions. For example, in a zoom camera, the focal length from the short focal length (wide side) to the long focal length (tele side) is changed by moving the strobe light emitting unit back and forth and changing the strobe irradiation angle according to the zoom magnification. Can be used to collect the irradiation light.

FIGS. 3 and 4 show the structure of this type of flash unit. In the example of FIG. 3, a Fresnel lens 2 also serving as a protector is formed on the front surface of the camera case 1, and a lamp (flash tube) 3 is provided on the rear side of the Fresnel lens 2.
The light-emitting unit 4 having is mounted so as to be movable back and forth. Further, a circuit section 5 for controlling light emission of the lamp 3 is provided on the rear side in the case 1. Therefore, in this case, the light emitting section 4 can be moved back and forth by the length L1, thereby changing the irradiation angle of the strobe.

The strobe shown in FIGS. 4A and 4B is a pop-up type. That is, a movable case 7 having the above-described Fresnel lens 2 is attached to the case 6 so as to protrude upward, and a light emitting unit 4 having a lamp 3 is provided in the movable case 7. In addition,
The circuit unit 5 is arranged inside the case 6 outside the movable case 7. According to such a configuration, the light emitting unit 4 moves diagonally forward and backward in conjunction with the vertical movement of the movable case 7, and
As shown in (B), when the movable case 7 moves upward,
The light emitting unit 4 is moved obliquely rearward on the upper side. Therefore,
In this case, the light emitting part 4 is set to the height H2 upward, and the length L2
The strobe irradiation angle can be changed in accordance with the focal length of the zoom, so that efficient strobe irradiation can be performed.

[0005]

However, the camera incorporating the movable strobe requires a space for moving the light emitting section 4 back and forth as shown in FIGS. 3 and 4. However, there is a problem that the space in the camera is not used effectively. In addition, the presence of the space for moving the light-emitting unit 4 back and forth makes the camera itself thicker, which is an obstacle to making the camera thinner and smaller.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a movable strobe which can effectively utilize a space in a camera required for moving a light emitting portion of the strobe. To provide a camera with a built-in camera.

[0007]

In order to achieve the above object, a camera incorporating a movable strobe according to the present invention comprises:
A movable case formed to be able to protrude from the camera body, and a strobe provided inside the movable case, which moves diagonally forward and backward in conjunction with the movement of the movable case so that the strobe irradiation angle changes according to shooting conditions. A camera having a light-emitting unit, wherein the strobe circuit unit is located behind the light-emitting unit disposed at the forefront in the movable case, at a position substantially aligned with the light-emitting unit disposed diagonally to the rear. It is characterized by being arranged in the inner space. Here, the term “oblique in the oblique front-rear direction” means oblique in all directions including the upper and lower sides and the left and right sides.

[0008]

When comparing the configuration of FIG. 3 with the configuration of FIG. 4, the light emitting unit 4 is moved to the rear in FIG. 3, so that it is necessary to always secure the rear space S1. It is not possible to place any members in the vehicle. However, in the case of FIG. 4, since the light emitting unit 4 is moved obliquely rearward on the upper side, the space S2 on the rear side of the light emitting unit 4 disposed at the forefront is vacant. Therefore, in the present invention, when the light emitting unit is moved obliquely rearward, attention is paid to the space S2 behind the light emitting unit arranged at the forefront, and the circuit unit of the strobe is arranged in this space S2. According to this, the space in the camera is effectively used, and the camera itself can be thinned.

[0009]

FIG. 1 shows the structure of a pop-up camera having a built-in movable strobe according to an embodiment.
FIG. 3B is a view showing a state where the lens is set to a short focal length (wide) side, and FIG. In FIG. 1, a movable case 12, which is a strobe case, is provided on a camera case (or a strobe support unit) 10, and a Fresnel lens 13 also serving as a protector is arranged on the front surface of the movable case 12. FIG.
As shown in FIG. 1A, a light emitting section 17 including a lamp (flash tube) 14, a reflecting mirror 15, and a housing 16 is arranged in the movable case 12, and the light emitting section in the arrangement state of FIG. A circuit section 18 is provided in the rear space S2 of the circuit 17.
The circuit section 18 has a circuit element for controlling flash light emission mounted on a board, and the circuit board 18 is connected to the light emitting section 17 through a lead wire 19.

That is, as shown in FIG. 1A, the circuit section 18 is provided with the light emitting section 17 disposed at the front end at the wide-angle end of the zoom.
It is arranged close to the rear side of, but as shown in FIG.
When the light-emitting unit 17 is located at the rearmost position at the telephoto end of the zoom, the light-emitting unit 17 and the circuit unit 18 are arranged at positions aligned with each other.

FIG. 2 shows an example of a pop-up mechanism of the strobe. That is, the guide plate 2 is engaged with the support portion 21 by engaging the guide groove 23 with the pin 22.
4 is attached, and an intermediate portion of the light emitting portion 12 is fixed and supported by an attaching portion 25 above the guide plate 24. The guide plate 24 is urged upward by a spring 27 shown. A bent piece 28 is formed near the center of the guide plate 24, and the pin 31 of the gear cam 30 is engaged with the upper part of the bent piece 28. The gear cam 30 rotates in conjunction with driving of a zoom lens (not shown).

Further, a pin 33 is formed on the side surface of the housing 16 of the light emitting section 17 so as to protrude. A guide groove 34 for guiding the pin 33 is provided on the side face of the movable case 12. A cam groove 36 with which the pin 33 is engaged is also formed in the side plate 35 in an oblique direction. Therefore, FIG.
When the movable case 12 is mounted on the mounting portion 25 of the guide plate 24, the pins 33 of the light emitting portion 17 are moved to the movable case 1.
The second guide groove 34 engages with the cam groove 36.

When the zoom lens is set at the wide end, the embodiment has the light emitting section 17 located at the forefront, as shown in FIG. Light is focused at a short focal length. Then, when the zoom function is operated and the zoom lens is driven to the tele (telephoto) side, the gear cam 30 in FIG. 2 rotates counterclockwise in conjunction with this drive. Then, the guide plate 24 moves upward by the rotation of the pin 31 engaging with the bent piece 28 in the same direction, and the movable case 12 also moves upward. At this time, since the pin 33 of the light emitting unit 17 in the movable case 12 slides in the cam groove 36, the light emitting unit 17 moves obliquely upward and rearward. Thereafter, when the zoom lens is set to the telephoto end, the light emitting unit 17 is moved to the position shown in FIG. 1B, and at this time, the strobe light is focused at a long focal length. In this way, during the operation from the wide end to the tele end, the light emitting section 17 is moved upward by the height H3 and rearward by the length L3.

In the operation of such an embodiment, FIG.
As shown in (B), since the light emitting section 17 moves diagonally backward and upward from the position of the chain line, the circuit section 18 disposed on the rear side (space S2) of the light emitting section 17 as shown in each figure moves. It does not get in the way. According to the arrangement of the circuit section 18, the space S2 is effectively used, and as compared with the conventional case (FIG. 4) of the same type as the embodiment, the circuit section 5
There is an advantage that the space S3 in which is disposed is unnecessary. Therefore,
It is also possible to reduce the size of the camera by this space S3.

In the above embodiment, an example is shown in which the movable case 12 accommodating the lamp 14 is applied to a pop-up camera projecting upward, but the movable case 12 is projected to the left or right or at a predetermined angle. It can also be applied. In this case, the light emitting section 17 may be moved to the left or right or diagonally backward at a predetermined angle. Further, the circuit section 18 of the above embodiment may include a circuit other than the strobe light emission control, and is not limited to those related to the strobe light emission.

[0016]

As described above, according to the present invention,
A camera in which a light-emitting unit is moved obliquely forward and backward in conjunction with the movement of a movable case so that a strobe irradiation angle changes according to, for example, a focal length of a zoom. On the rear side of the light emitting unit arranged in front,
The camera is placed in a space that is almost in line with the light-emitting part that is located diagonally to the rear, so that the space in the camera that is necessary to move the light-emitting part can be used effectively, making the camera thinner and smaller. It will also be possible to contribute.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a configuration of a strobe unit of a camera according to an embodiment of the present invention. FIG. 1A shows a state in which a light emitting unit is arranged at the forefront, and FIG. Is a diagram of a state in which it is arranged at the rear end.

FIG. 2 is a perspective view illustrating an example of a configuration of a pop-up function in the strobe according to the embodiment.

FIG. 3 is a cross-sectional view showing an example of a configuration of a conventional strobe for changing an irradiation angle.

FIG. 4 is a cross-sectional view showing a configuration of a conventional pop-up strobe for changing an irradiation angle.

[Explanation of symbols]

 2,13 ... Fresnel lens, 3,14 ... lamp, 4,17 ... light emitting section, 5,18 ... circuit section, 7,12 ... movable case, S1, S2, S3 ... space.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G03B 17/04 G03B 15/05

Claims (1)

(57) [Claims] 1. A movable case formed to be protrudable from a camera body, and an oblique front and rear interlocked with the movement of the movable case provided in the movable case so that an irradiation angle of a strobe light changes according to a photographing condition. A strobe light emitting unit that moves in the direction, wherein the strobe circuit unit is substantially behind the light emitting unit arranged diagonally rearward on the rear side of the light emitting unit arranged frontmost in the movable case. A camera with a built-in movable strobe, which is arranged in the movable case space at a lined up position.