JPH04126236U - splash-proof waterproof camera - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a drip-proof and waterproof camera equipped with a diopter adjustment device, which is low in cost and highly waterproof. [Structure] In a drip-proof waterproof camera having a camera body constructed in a watertight manner, an operating section for a viewfinder diopter adjustment mechanism is provided within a watertight area of the camera.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a drip-proof and waterproof camera, and in particular has a viewfinder with adjustable diopter. Regarding drip-proof and waterproof cameras.

0002

[Prior art and its problems]

In recent years, drip-proof and waterproof cameras that can take pictures in rain, snow, sea spray, underwater, etc. is commercially available. By the way, I am trying to apply the viewfinder diopter adjustment device to a drip-proof and waterproof camera. Diopter adjustment so that it can be operated from outside the camera body like a traditional camera When the operating section is installed, it is necessary to make the operating section waterproof by means of sealing, etc. be. However, this method is structurally complex, costs high, and requires maintenance. This also causes problems in terms of performance.

0003

[Purpose of invention]

The present invention was created by focusing on the above-mentioned problems, and is low cost and preventive. The purpose of the present invention is to obtain a drip-proof and waterproof camera that is highly water-resistant and equipped with a diopter adjustment device.

0004

[Summary of the idea]

The present invention is a drip-proof and waterproof camera that has a watertight camera body. The feature is that the operating section of the viewfinder diopter adjustment mechanism is provided within the watertight area of the camera. It is a sign. According to this configuration, the operation section for adjusting the diopter is configured in a watertight manner. Since it is installed inside the camera body, special seals such as O-rings are required for the operation part. There is no need for a sealing member, and it is also advantageous in terms of waterproofness.

[0005]

【Example】

The present invention will be explained below based on the illustrated embodiments. Figure 1 shows a drip-proof system using this invention. FIG. 2 is a perspective view showing the appearance of the water camera with the back cover open. Drip-proof waterproof camera 10 The camera body 11 is constructed in a watertight manner, and the rear surface of this camera body 11 has a A back cover 12 is installed so that it can be opened and closed. There is a finder window opening on the top of the camera back 12. 13 is provided, and a waterproof glass 13a is provided in this finder window opening 13. It is fitted in a watertight manner with a packing. Between camera body 11 and back cover 12 The watertight structure is achieved by providing a waterproof packing 15 as a sealing means on the inner and outer periphery of the back cover 12. , this waterproof packing 15 is attached to the waterproof packing contact portion 16 of the camera body 11 in a watertight manner. This is done by bringing it into contact with the

[0006] On the other hand, the camera body 11 has a diopter adjustment device located at the same position as the waterproof glass 13a. A finder 20 with a mechanism is provided (see FIG. 3). Figure 2 shows the camera FIG. 2 is an external perspective view of a finder 20 installed in a body 11. FIG. This fine The viewfinder lens barrel 21 includes a viewfinder objective lens 27 therein. , a finder eyepiece frame 22 having a finder eyepiece 26, and a viewfinder eyepiece frame 22 having a finder eyepiece 26; A viewing unit that is an operation unit for moving the viewfinder eyepiece frame 22 back and forth in the optical axis direction. A diopter adjustment shaft 24 is provided with a diopter adjustment knob 23 at one end. fine The front surface of the finder lens barrel 21 faces a watertight finder objective window 28. child On the other hand, the rear part of the finder lens barrel 21 is connected to the aperture opening of the camera body 11. It faces the finder opening 30 at the top of the section 17. The structure in this example In this case, the finder eyepiece 26 also serves as a diopter adjustment lens. There is.

[0007] The structure of the diopter adjustment mechanism of the finder 20 is as follows (Figs. 2, 3, and 4). reference). The finder eyepiece frame 22 is arranged radially with respect to the optical axis direction of the finder. It has an arm 22a protruding in the direction, and a diopter adjustment is provided on a female threaded portion 22b formed on this arm 22a. The male screw portion 24a of the adjusting shaft 24 is screwed together. On the other hand, the finder lens barrel 21 has an arm 21a projecting in the radial direction with respect to the optical axis direction of the finder; The shaft tip 24b of the diopter adjustment shaft 24 fits into the hole 21b formed in ing. Then, the diopter adjustment shaft 24 is rotatably fixed and removed in the axial direction. In order to prevent this, grooves are provided on both sides of the tip 24b of the diopter adjustment shaft An E-ring 50 shown in FIG. 5 is fitted to 24c. Finder eyepiece frame 22 is prevented from rotating by a linear guide mechanism and moves back and forth only in the optical axis direction. Illustration of its structure is omitted. Diopter adjustment provided at one end of the diopter adjustment shaft 24 The knob 23 is located beside the viewfinder opening 30 on the inner wall 18 of the camera body. It is location. Therefore, the diopter adjustment shaft 24 is rotated via the diopter adjustment knob 23. When the viewfinder eyepiece 26 moves in the optical axis direction, the viewfinder objective lens 26 moves in the optical axis direction. The distance from the lenses 27 changes. Therefore, the diopter is adjusted.

[0008] Note that the illustrated finder 20 is shown schematically, and the present invention is a finder. It is clear that the structure of the system does not matter. In addition, in this example, the viewfinder The eyepiece lens 26 also serves as a diopter adjustment lens, but the camera body In addition to the viewfinder objective lens and eyepiece lens inside the viewfinder, which are fixed inside, It is also possible to have a diopter adjustment lens that moves back and forth in the direction of the optical axis of the finder. stomach.

[0009] In order to prevent the film from being exposed to light entering from the finder 20, The back cover 12 has a material that does not transmit light on the inner and outer periphery of the finder window opening 13. A light-shielding packing 14 configured as shown in FIG. This light-shielding packing 14 is It comes into contact with the packing contact part 19 around the finder opening 30 of the lab body 11. Therefore, light from the finder 20 including the waterproof glass 13a leaks onto the film surface. is prevented.

0010 As described above, in this embodiment, the camera body 11 and the back cover 12 constitute a water body. A diopter adjustment knob 23, which is the operation part of the diopter adjustment mechanism, is provided in the dense area, and the knob By rotating the The diopter is adjusted by changing the distance from the finder objective lens. be.

[0011] However, regarding the structure for moving the finder eyepiece back and forth, However, the present invention is not limited to this. Figures 6 to 8 show the finder of the present invention. Another example (Example 2) regarding the structure is shown. In Figure 6, there is a finder pair inside. It has a lens barrel 61 with an object lens and a finder eyepiece 66 in the center. Between the viewfinder eyepiece frame 62 and the left side of the viewfinder 60 in FIG. As shown in the external view, biasing springs 65 are provided at the top and bottom. finder eyepiece The lens frame 62 is moved back and forth only in the optical axis direction by a direct guide mechanism (not shown). Guided by sea urchins. The diopter is shaped like an inverted L when viewed from above. A cam surface 63b is formed on one piece of the adjustment operation part 63, and this cam surface 63b , makes contact with an arm 64 extending perpendicularly to the optical axis direction from the finder eyepiece frame 62 are doing. Therefore, by sliding the diopter adjustment knob 63a up and down, The finder eyepiece frame 62 moves back and forth to adjust the diopter. Figure 8 shows The cover when the finder 60 of the second embodiment is mounted inside the camera body. This shows the appearance of the diopter adjustment operation section on the inner wall of the camera body.

0012 9 to 11 show another embodiment (implementation) of the finder structure of the present invention. Example 3) is shown. Finder lens barrel 21 with built-in finder objective lens 27' ' is installed inside the camera body 11', and the finder on the camera body inner wall 18' A female thread 30'a is formed in the opening 30'. Then, the viewfinder eyepiece The diopter adjustment device has a built-in lens 102 in the center and a male screw 103 on the outer periphery. The adapter 100 (see Figure 10) is attached to the female thread 30'a of the finder opening 30'. They are rotatably screwed together. With this structure, one end of the diopter adjustment adapter 100 By manually rotating the diopter adjustment operation part 101 provided on the outer periphery of the The distance between the finder objective lens 27' and the finder eyepiece 102 changes, Therefore, diopter adjustment is performed. In this embodiment, the diopter adjustment operation section is a diopter adjustment adapter. It is integrated with the tar. Figure 11 shows the viewfinder of Example 3 above attached to a camera body. This figure shows the appearance of the diopter adjustment operation part on the inner wall of the camera body when the are doing.

[0013]

[Effect of the idea] As described above, the drip-proof and waterproof camera of this invention has a camera body configured in a watertight manner. In drip-proof and waterproof cameras, the viewfinder's diopter adjustment is located within the watertight area of the camera. By providing an adjustment operation section, it is possible to create a low-cost, highly waterproof diopter adjustment system. It is possible to provide a drip-proof and waterproof camera equipped with an adjustment device.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of a drip-proof and waterproof camera to which the present invention is applied, with the back cover open.

FIG. 2 is an external perspective view of a finder installed in the camera body of the drip-proof and waterproof camera shown in FIG. 1;

FIG. 3 is a sectional view of the finder section when the finder shown in FIG. 2 is attached to the camera body.

4 is an external view of a diopter adjustment shaft of the finder shown in FIG. 2. FIG.

FIG. 5 is an external view of an E-ring.

FIG. 6 is an external perspective view of a finder in Example 2.

FIG. 7 is an external view of the finder shown in FIG. 6 from the left.

FIG. 8 is an external perspective view of the periphery of the diopter adjustment operation unit in Example 2.

FIG. 9 is a sectional view of a finder section in Example 3.

FIG. 10 is an external perspective view of a diopter adjustment adapter in Example 3.

FIG. 11 is an external perspective view of the periphery of the diopter adjustment operation unit in Example 3.

[Explanation of symbols]

11 Camera body 12 Back cover 13 Finder window opening 13a Waterproof glass 14 Light-shielding packing 15 Waterproof packing 16 Waterproof packing contact area 17 Aperture opening 18 Camera body inner wall 19 Light-shielding packing contact part 23 Diopter adjustment knob 30 Finder opening 26 Finder eyepiece

Claims (1)

[Scope of utility model registration request] Claim 1: A drip-proof and waterproof camera having a camera body configured in a watertight manner, in which a watertight area of the camera includes:
A drip-proof and waterproof camera characterized by having an operation section for a viewfinder diopter adjustment mechanism.