JP4445487B2 - Lighting device and waterproof cover mounting method for lighting device - Google Patents

Description

  The present invention relates to a waterproof illumination device suitable for illumination of an in-pipe inspection camera system used for in-pipe inspection of, for example, a sewer pipe, and a waterproof cover mounting method of the same device.

2. Description of the Related Art Conventionally, in-pipe inspection camera systems that receive external water pressure and are used for in-pipe inspection of, for example, a sewer pipe, require illumination devices for illuminating the front and sides (entire circumference) of the inside of the tube. A conventional waterproof illumination device used for this type of camera illumination has a structure in which a waterproof cover is fixed, a screwed structure, or a screwed structure in which a waterproof ring is inserted.
JP 2002-296645 A JP-A-8-35933 JP-A-6-50898

  The structure provided with the waterproof cover fixed as described above has a problem in terms of maintenance since it cannot be removed, and the above-described screw-in structure and screw-in structure have problems in maintenance workability. It was.

  The present invention has been made in view of the above circumstances, and provides a lighting device that can be easily and reliably attached with a simple structure and simple operation, and has excellent practicality and maintainability, and a waterproof cover mounting method for a lighting device. The purpose is to do.

The present invention provides an illumination device including a waterproof mechanism that waterproofs the light emitting unit by attaching a waterproof cover to an illumination opening of a housing in which the light emitting unit for illumination is housed.
Provided in the waterproof cover and the illumination opening of the housing is a fitting portion having a taper that expands in the depth direction of the opening, and the waterproof cover and the illumination opening of the housing The waterproof cover is attached to the illumination opening of the housing with a waterproof ring interposed between the fitting portions.

  Furthermore, the present invention is a method for mounting a waterproof cover applied to an illumination device for an in-pipe inspection camera, wherein the waterproof cover, and a housing opening of the illumination device to which the waterproof cover is mounted, A fitting portion having a tapered portion that expands in the depth direction is provided, and the waterproof cover is inserted between the waterproof cover and the fitting portion of the illumination opening of the housing by inserting the waterproof ring. It is attached to the opening for illumination of a housing | casing, It is characterized by the above-mentioned.

  The waterproof cover can be easily and reliably attached and detached with a simple configuration and simple operation.

  The lighting device according to the present invention attaches a waterproof ring (O-ring) mounting surface provided on a fitting fitting portion of a waterproof cover (waterproof lighting cover) made of a translucent resin, and the waterproof cover. By providing a small angle of inclination (taper) on the cover mounting surface (waterproof ring contact surface) of the housing (metal parts), simply fitting the waterproof cover with the waterproof ring attached to the cover mounting surface of the housing It realizes a waterproof cover (waterproof lighting) structure that does not come off in practical use. Also, the internal and external pressure of the lighting device varies depending on the heat generated by the light emitting part (light source) for illumination, the amount of water in the tube, etc., but the waterproof cover (lighting cover) can be removed by the force in the internal pressure direction. It can be used. In this case, the removal by the force in the internal pressure direction can be adjusted by selecting a waterproof ring and the inclination angle (taper). By adopting such a structure, the waterproof cover can be easily attached and detached with a simple configuration without requiring an operation such as fixing the cover with screws.

Embodiments of the present invention will be described below with reference to the drawings.
An example of the mounting structure of the lighting device according to the embodiment of the present invention is shown in FIG. 1, and the configuration of the main part of the lighting device is shown in FIG.

  The illuminating device 3 according to the embodiment of the present invention includes a housing 30 in which a light emitting unit for illumination is accommodated, and a waterproof cover 40 attached to the illumination opening of the housing 30. The In FIG. 1, three illumination devices 3 (one for front illumination and two for side illumination) are provided in a casing 10 of an in-tube inspection camera 2 that inspects the inside of the tube 1 to be inspected. An example is shown. The configuration example illustrated in FIG. 1 illustrates a configuration in which the casing 30 of the lighting device 3 is separate from the casing 10 of the in-tube inspection camera 2. However, the casing of the lighting device 3 is the in-tube inspection camera 2. A configuration integrated with the housing 10 may be used. A camera body 20 including a camera head is accommodated in the casing 10 of the in-pipe inspection camera 2. The in-pipe inspection camera 2 incorporating the camera body 20 is a self-propelled in-pipe inspection camera device that can continuously capture, for example, an image of the entire circumference of the wall surface of the tube cup. Since the functional configuration of the in-pipe inspection camera 2 and the configuration of the camera body 20 are not directly related to the present invention, detailed description thereof is omitted here.

  As shown in FIG. 2, the illumination device 3 includes a housing 30 in which a light emitting unit for illumination is stored, and a translucent resin (transparent or translucent) attached to the illumination opening of the housing 30. A waterproof cover 40 made of a resin, and an illumination LED 35 that constitutes the illumination light emitting section. The housing 30 houses an illumination LED 35 that constitutes a light emitting unit for illumination, and an illumination optical member (not shown) such as a reflector or a diffuser that reflects or diffuses the LED light source. The waterproof cover 40 is provided with a cylindrical fitting portion 41 for mounting (fitting) the cover to the housing 30 around the illumination cover portion through which the illumination light is transmitted. Corresponding to the fitting portion 41, the illumination opening 31 of the housing 30 is provided with a cover fitting portion (cover fitting hole) 32 having a concave cross section where the waterproof cover 40 is attached (fitted). It has been.

  In the fitting part 41 of the waterproof cover 40 and the cover fitting part 32 formed in the illumination opening 31 of the housing 30, the taper part that increases in diameter in the depth direction of the illumination opening 31, respectively. 33 and 43 are formed, and a waterproof ring (O-ring) 50 is provided between the fitting portion 41 of the waterproof cover 40 and the fitting portion 32 formed in the illumination opening 31 of the housing 30. The waterproof cover 40 is inserted into the illumination opening 31 of the housing 30 by being inserted. A tapered portion 43 formed on the fitting portion 41 of the waterproof cover 40 and in contact with the waterproof ring 50 is formed with a tapered portion 33 formed on the cover fitting portion 32 communicating with the illumination opening 31 of the housing 30. The surfaces have the same taper angle (ti) and are parallel to each other.

  In the embodiment shown partially enlarged in FIG. 2, the fitting groove 41 of the waterproof ring 50 is formed in a part of the tapered portion 43 in the fitting portion 41 of the waterproof cover 40, and this fitting is performed. Although the waterproof ring 50 is fitted in the mating groove 44, the fitting groove 44 is not necessarily required.

  Also, the fitting portion 41 of the waterproof cover 40 is a hook for removing the cover for removing the waterproof cover 40 attached to the illumination opening 31 of the housing 30 from the illumination opening 31 of the housing 30. A groove 42 is provided.

  When the waterproof cover 40 attached to the illumination opening 31 of the housing 30 is removed from the illumination opening 31 of the housing 30, for example, a hook-shaped jig is used to remove the claw of the jig for removing the cover. The waterproof cover 40 can be easily detached from the illumination opening 31 of the housing 30 by hooking and pulling on the hook groove 42. When the waterproof cover 40 is easily removed from the illumination opening 31 of the housing 30 and then attached to the illumination opening 31 of the housing 30 again, the fitting portion 41 of the waterproof cover 40 is simply attached to the housing 30. It is only necessary to push (insert) into the illumination opening 31. In the mounted state of the waterproof cover 40, the waterproof ring 50 includes a tapered portion (inclined surface) 33 that expands in the depth direction of the illumination opening 31 formed in the fitting portion 32 on the housing 30 side. The waterproof cover 40 maintains a waterproof effect because it is sandwiched between the tapered portion (inclined surface) 43 formed in the fitting portion 41 of the waterproof cover 40 corresponding to the tapered portion 33. In this state, it is attached to the illumination opening 31 of the housing 30 in a state where it is difficult to remove from the illumination opening 31 of the housing 30.

  As described above, the mounting surface of the waterproof ring (O-ring) 50 provided in the fitting portion 41 of the waterproof cover (waterproof illumination cover) 40 made of a translucent resin, and the waterproof cover 40 are provided. The waterproof cover 40 to which the waterproof ring 50 is attached is formed by forming tapered portions 33 and 43 having small inclination angles on the cover mounting surface (waterproof ring contact surface) 32 of the housing (metal part) 30 to be attached. A waterproof cover (waterproof illumination) structure that does not come off at the time of practical use is realized simply by fitting into a fitting portion (cover fitting hole) 32 serving as a cover mounting surface of the body 30. Moreover, it is also possible to remove the waterproof cover 40 by the force in the internal pressure direction of the lighting device 3, and the waterproof cover 40 can be used repeatedly. In this case, the removal of the waterproof cover 40 by the force in the internal pressure direction can be arbitrarily adjusted by selecting the material and thickness of the waterproof ring 50 and the inclination angle (taper angle) ti. By adopting such a structure, it is possible to provide illumination mounting with a waterproof cover structure that can be easily attached and detached without requiring an operation such as fixing the cover with screws with a simple configuration.

  Note that the waterproof cover mounting structure of the lighting device according to the above-described embodiment of the present invention is applicable not only to the lighting device of the in-tube inspection camera, but also to lighting of various types of devices that require water-proofing or waterproofing. It is. Further, the appearance configuration, the internal structure, the shape of the waterproof cover, and the like of the lighting device are not limited to those of the above-described embodiments, but may be other appearance configurations, internal structures, and shapes.

Explanatory drawing which shows the attachment structural example of the illuminating device which concerns on embodiment of this invention. Sectional drawing which shows the structure of the principal part of the illuminating device which concerns on the said embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Tube, 2 ... In-pipe inspection camera, 3 ... Illuminating device, 10 ... Housing, 20 ... Camera body, 30 ... Housing, 31 ... Opening for illumination, 32 ... Fitting part (cover fitting hole), 33 DESCRIPTION OF SYMBOLS ... Tapered part, 35 ... LED for illumination, 40 ... Waterproof cover, 41 ... Fitting part, 42 ... Hook groove for cover removal, 43 ... Tapered part, 50 ... Waterproof ring (O-ring).

Claims (7)

In an illuminating device including a waterproof mechanism for waterproofing the light emitting unit by attaching a waterproof cover to an illumination opening of a housing in which the light emitting unit for illumination is housed,
Provided in the waterproof cover and the illumination opening of the housing is a fitting portion having a taper that expands in the depth direction of the opening, and the waterproof cover and the illumination opening of the housing An illuminating device comprising: a waterproof ring interposed between the fitting portions; and the waterproof cover attached to the illumination opening of the housing.   The lighting device according to claim 1, wherein the housing is configured integrally with a housing of the in-tube inspection camera.   The lighting device according to claim 1, wherein the waterproof cover is made of a translucent resin, and a hook groove for removing the cover is provided in a part of the waterproof cover.   The lighting device according to claim 1, wherein the waterproof cover has a fitting groove for the waterproof ring.   The lighting device according to claim 1, wherein the tapered portion formed in the fitting portion of the waterproof cover forms a surface parallel to the tapered portion formed in the illumination opening of the housing. .   The illumination device according to claim 1, wherein the illumination light emitting unit includes an illumination LED and a member that reflects or diffuses the LED light source. A method of attaching a waterproof cover applied to a lighting device of an in-tube inspection camera,
The waterproof cover and a housing opening of the lighting device to which the waterproof cover is attached are provided with a fitting portion having a tapered portion that expands in the depth direction of the opening, the waterproof cover, and the A waterproof cover mounting method for an illuminating device, wherein the waterproof cover is attached to the illumination opening of the housing by inserting a waterproof ring between the fitting portions of the illumination opening of the housing.

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