JP2000341563A - Electronic view finder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the fixture of packing, to dispense with fixture due to adhesion and to facilitate assembly by forming packing according to the mating face shape of a case. SOLUTION: The mating face of a bottom case 12 is a complicated form but a groove part 12A for fitting in packing is formed on the upper surface. Inside the groove part 12A, positioning parts 12a-12i are formed. Packing 13 is formed from an elastic body for the passage of time, according to the shape of the mating face part, and projecting parts 13a-13i are formed corresponding to the packing positioning parts 12a-12i. When the projecting parts 13a and 13b of the packing 13 are fitted into the packing positioning parts 12 and 12b, the gap between the projecting parts 13a and 13b is fitted into the groove part between the packing positioning parts 12a and 12b. When the projecting part 13c is fitted into the packing positioning part 12c, the gap between the projecting parts 13b and 13c is fitted into the groove part between the packing positioning parts 12b and 12c. Afterwards, packing is similarly completely fitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic viewfinder.

[0002]

2. Description of the Related Art Camera-integrated video has become widespread, and video shooting can be easily performed. The miniaturization and weight reduction are progressing, and the use opportunities in the field are increasing. A viewfinder is used to check a shooting state of a camera-integrated video. The present invention relates to an electronic viewfinder using a liquid crystal or a cathode ray tube as a display device. The electronic viewfinder houses a display device together with a drive circuit and a lens system for enlarging and viewing the display unit. In general, the case of the electronic viewfinder has a structure that can be divided into two, and packing is not used for a case where the shape of the mating surface of the case is simple.

When the design of the electronic viewfinder becomes diversified, the shape of the mating surface of the case tends to become complicated,
The packing is provided on the mating surface of the case to withstand outdoor use. The purpose is dust proofing, drip proofing, etc., and a stick with a circular or square cross section is adhered and fixed to the case. FIG. 1 is a sectional view of a mating surface of an electronic viewfinder according to the prior art. The adhesive 4 is applied to the groove 2 a provided in the bottom case 2, the packing 3 is inserted, and the top case 1 is assembled.

[0004]

The workability of fixing a rod-shaped packing to the mating surface of a case having a complicated shape with an adhesive is extremely poor. In addition, it is difficult to ensure the reliability of bonding, and the drip-proof effect is reduced. When water enters the case, a short circuit is likely to occur, and when a cathode ray tube is used as a display device, it is dangerous because a high pressure is used.

[0005] Since the packing is adhered and fixed, it is not possible to replace the packing alone, but it is necessary to replace the packing including the case.

[0006]

In an electronic viewfinder having a case divided into a plurality of parts and a packing formed of an elastic body between the cases for drip-proof when assembling the case, the packing is formed by a mating surface of the case. Shape according to

A packing housing is provided on the mating surface of the case, and the packing is fitted into the housing.

A plurality of protrusions are provided on the packing, and an alignment portion for engaging with the protrusion provided on the packing is provided on the packing storage portion of the case. Further, the interval between the protrusions of the packing is smaller than the interval between the alignment portions of the case.

[0009]

FIG. 2 is an exploded perspective view of a case and packing of an electronic viewfinder according to an embodiment of the present invention, and FIG. 3 is a sectional view of a mating surface portion.

Although the mating surface of the bottom case 12 has a complicated shape, the groove 12 for inserting the packing is formed on the upper surface.
A is formed. Inside the groove portion 12A, packing positioning portions 12a to 12i for fixing a protrusion formed on the packing described later are formed. The packing 13 is formed of an elastic body in a shape following the shape of the mating surface portion.
Packing positioning portion 12 formed on bottom case 12
Protrusions 13a to 13i corresponding to a to 12i are formed. In this embodiment, two packings 13 are provided.

When the packing projection 13a is inserted into the packing positioning portion 12a and then the packing projection 13b is inserted into the packing positioning portion 12b, the packing 13a
And 13b are inserted into a groove between the packing positioning portions 12a and 12b. Subsequently, when the protrusion 13c of the packing is inserted into the packing positioning portion 12c, the space between the packings 13b and 13c is inserted into the groove between the packing positioning portions 12b and 12c. Similarly, when the projections 13d and 13e are loaded, the loading of one packing is completed. If the interval between the projecting portions of the packing is made smaller than the interval between the positioning portions of the case, and the packing is incorporated while being stretched, assembly becomes easier.

As shown in FIG. 3, the packing 13 has a rectangular cross-sectional shape, and a fitting portion with the groove 12a is elongated.

[0013]

According to the present invention, the shape of the packing conforms to the shape of the mating surface of the case, so that the packing can be easily settled, so that it is not necessary to fix the packing by bonding and the assembly is facilitated.

Providing the packing storage portion on the case mating surface further improves the calmness of the packing. Dust-proof and drip-proof effects could be enhanced.

A plurality of protrusions are provided on the packing, and a positioning portion for engaging with the protrusion provided on the packing is provided on the packing storage portion of the case, so that the positioning of the packing and the packing storage portion is automatically performed. As a result, the assembling work of the packing became easy, and at the same time, the assembling work became stable.

Further, the above-described effect can be enhanced by assembling the packing while making the interval between the protrusions of the packing smaller than the interval between the positioning portions of the case, and expanding the packing.

Since no adhesive is required, the packing can be easily removed and the packing can be replaced, so that even if the packing deteriorates, the cost of after-sales service can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a mating surface of an electronic viewfinder according to the related art.

FIG. 2 is an exploded perspective view of a case and a packing of an electronic viewfinder showing an embodiment of the present invention.

FIG. 3 is a sectional view of a mating surface portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Top case 2 Bottom case 2a Groove 3 Packing 4 Adhesive 11 Top case 12 Bottom case 12A Groove 12a-12i Alignment part 13 Packing 13a-13i Projection

Continued on the front page F term (reference) 2H087 KA03 KA14 4E360 AB02 AB12 AB33 AB34 AB42 BD03 BD05 EA12 EA18 EB04 ED03 ED23 ED28 ED29 GA29 GA47 GA53 GB06 4G075 FB12 FC17 5C022 AC03 AC65 AC77 AC78 9A001 BB06 KK16

Claims (4)

[Claims] 1. An electronic viewfinder in which a plurality of divided cases and a packing formed of an elastic body are provided between the cases for drip-proof when assembling the cases, the packing has a shape following the mating surface shape of the cases. An electronic viewfinder, characterized in that: 2. The electronic viewfinder according to claim 1, wherein a packing housing is provided on the mating surface of the case, and the packing is fitted into the housing. 3. The packing according to claim 2, wherein a plurality of protrusions are provided, and a packing accommodation portion of the case is provided with an alignment portion which engages with the protrusion provided on the packing.
Electronic viewfinder as described. 4. The electronic viewfinder according to claim 3, wherein the distance between the projections of the packing is smaller than the distance between the positioning portions of the case.