JPH0644213Y2 - Inspection TV camera - Google Patents

Description

[Detailed description of the device]

[0001]

This invention relates to an apparatus for inspecting water pipes, sewer pipes, etc. using a television camera, and more particularly to an in-pipe inspection television camera which is effective when applied to a camera for inspecting small diameter pipes. is there.

[0002]

2. Description of the Related Art In-pipe inspection television cameras for inspecting the inside of a water pipe have been developed. In this television camera, a camera head portion using a solid-state image sensor is inserted into the inside of a tube, and an image pickup signal of the inside is picked up via a cable connected to the camera head portion and guided to a monitor outside the tube for monitoring. It is a device.

FIG. 2 shows a structure of a head portion of a conventional television camera for in-pipe inspection. The head case 11 has an egg-shaped front case 11a, an opening for opening a lens system 12 for imaging is provided at the center of the head, and a plurality of illumination lamps 13 are provided around the lens system 12. An opening for has been opened. In FIG. 2A, one illumination lamp 13 is shown for the sake of clarity. All of the openings are closed by glass and are waterproofed. The front case 11a and the rear case 11b of the head case 11 are coaxially joined to each other at their openings, and the joint portion is waterproofed by an O-ring.

A donut type illumination board 15 is concentrically fixed to the rear opening of the front portion 11a by screws. The illumination lamp 13 is soldered to the illumination board 15 with its front facing, and the illumination board 15 is attached to the front case 11
When attached to a, the illumination lamp 13 corresponds to a predetermined opening. In front of the rear case 11b,
The image pickup device 21 is concentrically attached via a substrate 22. When the rear case 11b is combined with the front case 11a, the image pickup device 21 faces the lens system 12 attached to the front case 11a through the central opening of the illumination board 15.

Here, the electric wire of the cable 25 and the terminal of the solid-state image pickup device 21 are soldered in advance, and the rear case 11b
The substrate 22 is attached to the.
Further, before the front case 11a and the rear case 11b are combined, the electric wire of the cable 25 and the terminal of the illumination board 15 are also soldered in advance. Then, the illumination board 15 is attached to the front case 1.
Fix to 1a. Therefore, before the front case 11a and the rear case 11b are combined, the state is as shown in FIG. 2 (B).

[0006]

According to the above-mentioned conventional TV camera, since the electric wire drawn from the lamp and the cable is directly soldered to the illuminating board 15, when the illuminating lamp 13 is replaced, the problem is solved. There is a problem that the work is troublesome. Opportunity to replace the lighting lamp 13
Relatively many times required wiring work by soldering. In particular, this TV camera has a small diameter (5
(0Φmm to 100Φmm) Since it has been developed for pipes, it is extremely miniaturized. For this reason, the wiring portion made of solder has a small space and requires skill. Further, with this configuration, when the rear case 11b is separated from the front case 11a during inspection and repair, the illumination board 15
Since it is fixed to the front case 11a side, an unreasonable pulling force is applied to the electric wire, which may damage the substrate or the wiring.

Therefore, in this invention, the safety is high when the front case and the rear case of the camera head are separated,
Moreover, it is an object of the present invention to provide an in-tube inspection television camera in which the illumination lamp can be easily replaced.

[0008]

According to the present invention, a lens system opening is provided in the center of one front end portion, and a plurality of illumination light openings are provided around the opening, and the lens system opening is provided. A lens system is fixed to the back, and an illumination lamp is provided at a position corresponding to the illumination light opening at the other end, and a donut-shaped illumination substrate supporting the illumination lamp is provided at a position corresponding to the lens system. A front case to be attached and a front end portion can be combined with a rear end portion of the front case, and an imaging element is provided at a position corresponding to the opening of the illumination board, and a position corresponding to the illumination board. Has a donut-shaped connection board, and a rear case in which electric wires of a cable to be attached to a rear end portion are pre-soldered on the connection board, and the rear case is combined with the front case. When
It is provided with a terminal of the connection board and a structure in which predetermined terminals of the illumination board have elasticity and are electrically connected to each other.

[0009]

By the above means, when the front case and the rear case are separated from each other, no electric wire is interposed between them as in the conventional case. For this reason, there is no damage to the electric wires or the substrate, and further, the work of detaching the illumination substrate and replacing the illumination lamp becomes easy.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. Reference numeral 51 denotes a camera head portion, which is formed by concentrically combining a front case 51a and a rear case 51b to form an appearance. The front case 51a has a lens system opening at the center at one front end thereof, a plurality of illumination light openings around the opening, and the lens system 52 is fixed at the back of the lens system opening. ing. At the other end, which is the rear part of the front case 51a, an illumination lamp 53 is disposed at a position corresponding to the illumination light opening. Although FIG. 1A shows the state of one illumination lamp, a plurality of illumination lamps are arranged concentrically. The illumination lamp 53 is a donut type illumination substrate 55.
It is attached to and supported by. The illumination board 55 is opened at a position corresponding to the lens system 52 to form a central opening, and an image pickup device 61 described later can be inserted through this opening.

In the rear case 51b, a solid-state image pickup device 61 is concentrically attached via a substrate 62 to one end which is the front, and a cable 65 is attached to the other end which is the rear. Further, a donut-shaped terminal board 71 is attached to one end which is the front side. An electric wire for supplying power to the illumination lamp 53 is drawn from a cable 65 and soldered to the terminal board 71.

Here, the electrical connection between the terminal board 71 and the illumination board 55 is performed by the following means. That is, the illumination board 55
The lighting lamp and its terminals are soldered to the
The terminal 55a is a plate-like elastic terminal facing the terminal board 71. The terminal board 7 faces the elastic terminal 55a.
A plate-shaped elastic terminal 71 a is also attached to 1. Either one of the elastic terminals 55a and 71a may be an ordinary terminal. The elastic terminals 55a and 71a are
When the front case and the rear case are united, they elastically contact each other to enable power supply to the illumination lamp.

FIG. 1B shows a state in which the front case 51a and the rear case 51b are separated. As described above, according to the television camera of the present invention, no electric wire is interposed between the cases 51a and 51b after the separation. As a result, there is no risk of cutting the wire, peeling the soldered portion, damaging the board, etc. by applying an unreasonable force to the wire as in the conventional case.
Further, even if the illumination board 55 is separated from the front case 51a, there is no electric wire. Therefore, the replacement work of the illumination lamp can be performed very easily.

[0015]

As described above, according to the present invention, the safety is high when the front case and the rear case of the camera head are separated, and the illumination lamp can be easily replaced.

[Brief description of drawings]

FIG. 1 is a sectional view and an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view and an exploded perspective view of a conventional in-pipe inspection television camera.

[Explanation of symbols]

51 ... Camera head part, 51a ... Front case, 51b ...
Rear case, 52 ... Lens system, 53 ... Illumination lamp, 55
... illumination board, 61 ... imaging element, 62 ... board, 65 ... cable, 71 ... terminal board, 55a, 71a ... elastic terminal.

Claims (1)

[Scope of utility model registration request] 1. A lens system opening is provided at the center of one end portion which is the front side, and a plurality of illumination light openings are provided around the opening.
The lens system is fixed at the back of the lens system opening, and the other end has an illumination lamp at a position corresponding to the illumination light opening, and the position corresponding to the lens system is a doughnut-shaped illumination lamp. A front case to which an illuminating board supporting is attached, and a front end portion can be combined with a rear end portion of the front case, and an imaging element is provided at a position corresponding to an opening of the illuminating board, and A donut-shaped connection board is provided at a position corresponding to the illumination board, and a rear case in which electric wires of a cable to be attached to a rear end portion are pre-soldered to the connection board, and the rear case is An in-pipe inspection television camera, comprising a terminal of the connection board and a structure in which predetermined terminals of the illumination board have elasticity and are electrically connected to each other when they are combined with the front case.