JPS5824323Y2 - Portable lighting fixture with observation hole - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a portable lighting device with an observation hole suitable for observing the inside of a pipe-shaped object having a small opening and a long depth, making it difficult for irradiation light to enter, or dark areas such as small gaps.

For example, to observe the inside of a dark tube, a relatively slender flashlight has traditionally been used.

FIG. 1 is a schematic diagram showing such a conventional observation method.

In other words, when observing an object B inside a thin tube A, there is a gap X between the light source and the observer's eyes, so it is extremely difficult to match the light irradiation direction C with the observer's line of sight. , this becomes more noticeable as the diameter of the capillary A becomes smaller.

Furthermore, it has the disadvantage that the amount of light irradiated is weak, making it impossible to observe deep parts.

The present invention has been made in view of the above-mentioned drawbacks, and it is an object of the present invention to provide a portable lighting device that allows easy observation of the inside of a dark tube or a dark area such as a small gap.

A portable lighting device with an observation hole according to the present invention is composed of a light source, a head that surrounds the light source and has a reflecting mirror on the back, and a power supply section for supplying current to the light source, and the head is provided near the light source. The device is characterized in that an observation hole passing through the head is provided.

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 2 is a diagram showing an observation situation using the portable lighting device E with an observation hole according to the present invention, in which the gap X between the light source and the observer's eyes is made substantially zero, and as shown in the figure. The object B in the thin tube A is to be observed by making the direction of light irradiation substantially coincide with the line of sight of the observer.

3 and 4 are a plan view and a cutaway cross-sectional view of essential parts, respectively, showing a specific example of the configuration of the portable lighting device E with an observation hole shown in FIG. 2. FIG.

This portable lighting device with an observation hole has a two-part structure: a head 1 having a light source, and a cylindrical body 2 installed orthogonally thereto and containing a dry cell battery 8 serving as a power source for the head 1.

Furthermore, as shown in FIG. 4, the head 1 consists of a light source 3 located near the center, a reflecting mirror 4 formed on the back of the head, and a transparent plate 5 provided on the front. An observation hole 7 is provided near the light source 3 and separated from the light source 3 by a shielding plate 6 so as to be parallel to the irradiation direction of the light.

This observation hole 7 passes through the reflecting mirror 4 and communicates with the outside, so that the direction of irradiation by the light source can be observed from the outside through this observation hole 7.

Further, a dry battery 8 is installed inside the cylinder 2.

By adopting such a structure, the direction of light irradiation and the direction of the line of sight can be made almost the same as shown in Fig. 2.
Not only can it reliably observe dark areas such as tubules, but also go deep, the amount of light irradiated is greater than when using a conventional slender flashlight, making it possible to observe fine details.

Moreover, FIG. 5 is a diagram showing another embodiment of the present invention.

As shown in FIG. 5, the head 1' and the cylindrical body 2' are connected via a connecting part 9, and this part can be bent, so that the mutual angle can be freely selected. It can then be used as a regular flashlight.

As explained above, the portable lighting device with an observation hole of the present invention can emit bright light deep into a thin tube or a small gap, and can facilitate observation. The utility value is extremely high.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing a conventional observation situation of a thin tube, Fig. 2 is a drawing showing a situation of observation of a small tube when using a portable lighting device with an observation hole according to an embodiment of the present invention, and Fig. 3 is a diagram showing a situation of observation of a thin tube using a portable lighting device with an observation hole according to an embodiment of the present invention. FIG. 4 is a plan view of the lighting fixture, FIG. 4 is a cutaway sectional view of the same essential parts, and FIG. 5 is a diagram showing a portable lighting fixture with an observation hole according to another embodiment of the present invention. 1... Head, 2... Tube, 3...
・Light source, 4...Reflector, 5...Transparent plate, 6...Blocking plate, 7...Observation hole, 8...
...Dry battery, 9...Connection part, A...
... Thin tube, B ... Curved object, C ... Light irradiation direction, D ... Line of sight, E ... Portable lighting device with observation hole.

Claims (1)

[Scope of utility model registration request] It is composed of a light source, a head having a reflecting mirror installed so as to surround the back surface of the light source, and a power supply unit for supplying current to the light source, and the head is attached to the head near the light source. A portable lighting device with an observation hole, characterized in that a penetrating observation hole is provided so that the direction of the irradiated light emitted by the light source and the reflecting mirror is substantially parallel to the direction of the observation hole.