JPH056437U - Waterproof camera with heater glass to prevent shortage - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a short-circuit prevention structure for a waterproof camera with a heater glass, which does not require an insulating agent at the lead wire connection portion and can be downsized. A short-circuit prevention structure for a waterproof camera with a heater glass, in which a front glass is a heater glass, a metal case is used as an outer case, lead wires are connected to the heater glass, and waterproof packing is provided around the glass. The waterproof wall surrounding the connecting portion of the lead wire is integrally formed with the waterproof packing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a short-circuit prevention structure for a waterproof camera with a heater glass, in which a haze-preventive heater glass to which a lead wire is connected is attached to a metal case via waterproof packing.

[0002]

[Prior Art]

 Generally, in a waterproof camera with a heater glass, a camera body 22 is built in a metal case 21, and a glass 23 is attached to a front case 21 of the camera 22 by a glass presser 24 as shown in FIG. ing. The glass 23 is attached to the case 21 via a waterproof packing 25 so as to be waterproof. Further, the glass 23 is provided with a transparent heater 26 so that the glass 23 is heated so that moisture does not adhere to the glass 23. Lead wires 27 for supplying a current to the heater 26 are connected to both sides of the glass 23 by soldering.

In addition, there is a bare wire portion 27a (hereinafter referred to as a connecting portion), which is stripped off for soldering, at the connection end of the lead wire 27. Then, in order to prevent the connecting portion 27a and the metal case 21 from coming into contact with each other and causing a short circuit, the insulating agent 28 is applied to the connecting portion 27a.

[0004]

[Problems to be solved by the device]

 However, according to the above-mentioned conventional short-circuit prevention structure, since an insulating agent is applied to the connecting portion of the lead wire to prevent a short-circuit, it takes time and effort to make the application uniform and proper, and to manage the application There was a trouble that it was annoying.

Further, if the gap between the connecting portion and the case is reduced, it becomes easier for them to come into contact with each other, and there is a risk of a short circuit even if the above-mentioned insulating agent is used. Therefore, this gap can be reduced to reduce the size of the camera. There was no inconvenience.

Therefore, an object of the present invention is to solve the above-mentioned inconvenience, that is, to provide a short-circuit prevention structure for a waterproof camera with a heater glass, which does not require an insulating agent and can reduce the size of the camera.

[0007]

[Means for Solving the Problems]

 In the present invention, the front glass is a heater glass, a metal case is used as an outer case, lead wires are connected to the heater glass, and a waterproof packing is provided around the glass. The structure is such that the barrier wall surrounding the connecting portion of the lead wire is integrally formed with the waterproof packing.

[0008]

[Action]

 A protective wall surrounding the connecting portion of the lead wire is provided integrally with the waterproof packing, and the protective wall prevents contact between the connecting portion and the metal case.

[0009]

【Example】

 The present invention will be described below based on the embodiment shown in FIGS. In FIG. 1, reference numeral 1 is an outer case made of metal, and 2 is a camera body disposed in the case 1. A plate-shaped glass 3 is attached to a case 1 on the front surface of the camera body 2 by a glass retainer 4.

The glass 3 is provided with a transparent heater 5 for heating the glass 3 so as to prevent moisture from adhering to the glass 3. Lead wires 6 for supplying power to the heater 5 are soldered on both sides of the glass 3, respectively.

A non-conductive and elastically deformable waterproof packing 7 made of rubber or the like is attached to the entire periphery of the glass 3. Further, in order to prevent the connecting portion of the lead wire 6 and the case 1 from coming into contact with each other to prevent a short circuit, there is provided a short circuit prevention structure including a barrier wall 8 formed integrally with the waterproof packing 7.

That is, as shown in FIGS. 2 and 3, the waterproof packing 7 is provided with a barrier wall 8 surrounding the connecting portion 6a of the lead wire 6 of the glass 3 and having a required height (longer than the connecting portion 6a). Is formed in. Therefore, the barrier 8 prevents contact between the connecting portion 6a and the case 1 and prevents a short circuit. Reference numeral 9 is a notch portion provided so that the lead wire 6 soldered to the glass 3 can be easily incorporated into the waterproof packing 7.

Next, the present invention will be described based on another embodiment shown in FIG. The same members as those in the above embodiment are designated by the same reference numerals. In the short-circuit prevention structure for the waterproof camera with the heater glass according to the present embodiment, the barrier 10 of the waterproof packing 7 is formed at a height that abuts on the case inner member 11, and the tip of the barrier 10 is installed inside the case 1 after being incorporated. It is adapted to be pressed by the member 11. Therefore, in this embodiment, in addition to the effects similar to those of the above-described embodiment, the protruding end of the barrier 10 is pressed by the internal member 11 and the degree of close contact of the portion A in FIG. 4 is increased, so that waterproofing is more reliable. Further, since the inside of the barrier 10 is a closed space due to the barrier 10 and the internal member 11, even if water enters the case 1, it is difficult for the water to enter the barrier 10 and the short circuit is further prevented. You can be more certain.

[0014]

[Effect of the device]

 As described above, according to the short-circuit prevention structure of the waterproof camera with the heater glass of the present invention, the barrier wall surrounding the connecting portion of the lead wire is provided integrally with the waterproof packing, and the barrier wire makes contact between the lead wire and the metal case. Since the short circuit is prevented and the troublesome management of the application of the insulating agent is not required to prevent the short circuit, the assembly man-hour is reduced and the production cost can be reduced. Further, since the gap between the connecting portion and the case only needs to be secured by the width of the barrier wall, this gap can be reduced and the camera can be downsized.

[Brief description of drawings]

FIG. 1 is a vertical sectional view according to an embodiment of the present invention.

FIG. 2 is a view on arrow II-II in FIG.

FIG. 3 is an enlarged view of part III in FIG.

FIG. 4 is an enlarged vertical sectional view of an essential part according to another embodiment of the present invention.

FIG. 5 is a vertical sectional view of a conventional example.

[Explanation of symbols]

 1 Case 3 Glass 5 Heater 6 Lead wire 6a Connection part of lead wire 7 Waterproof packing 8, 10 Barrier

Claims (1)

[Claims for utility model registration] 1. A front glass is a heater glass, a metal case is used as an outer case, lead wires are connected to the heater glass, and waterproof packing is provided around the glass. A short-circuit prevention structure for a waterproof camera with a heater glass, wherein a barrier wall surrounding a connecting portion of the lead wire is integrally formed with a waterproof packing.