JP3040090U - staff - Google Patents

Abstract

(57) [Summary] [Problem] To provide leveling staff who can read the scale clearly even in the dark. A light emitting section is provided between a base material and a scale.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a staff used for leveling to measure a difference in height between two points in civil engineering work and the like.

[0002]

[Prior art and problems]

 In determining land parcels, road / river works, and building structures, it is necessary to make various surveys in advance and clarify their positional relationships in order to perform appropriate works. Among such surveys, the measurement of height difference between two points is called leveling. Leveling means that the bar-shaped staffs called staff are installed vertically at two points where the difference in elevation is to be determined, and the level difference between the points is read by reading each scale horizontally with a telescope called level. Is a surveying method for measuring.

On the other hand, the surveying work is often performed at night, and the surveying may be performed in a dark place such as in a tunnel. In this case, since the staff's scale is dark and difficult to read, it was necessary for the worker who supported the staff to illuminate the staff's scale with a flashlight or the like.

However, since the worker supports the staff with one hand and operates the flashlight with the other hand, the work becomes extremely complicated and, depending on how to illuminate the flashlight, There was a problem that the scale was difficult to read due to the shadow. In order to solve this, it is possible to increase the number of workers and divide the work into those who support the staff and those who operate the flashlight, but increase the number of workers for such simple surveying work. This is not desirable from the viewpoint of labor costs.

Therefore, an object of the present invention is to provide a leveling staff who can clearly read the scale even in the dark without increasing the number of workers.

[0006]

[Means for Solving the Problems]

 According to the present invention, in a staff used for leveling and having a rod-shaped base material provided with predetermined scales, a light-emitting portion is provided between the base material and the scales. Provided (Claim 1). According to this means, the light emitting portion provided between the base material and the scale emits light, so that the scale is raised even in the dark. For this reason, the scale can be clearly read from the level, and since it is not necessary to illuminate the scale with a flashlight or the like, it is possible to reduce the burden on the operator who supports the staff.

In this invention, a fluorescent lamp, an electric lamp, an optical fiber or the like can be used as the light emitting section, but these do not necessarily have to be provided over the entire area of the scale, and the scale is clear in the dark. If it is possible to read the above, it may be provided with an appropriate interval. It is particularly preferable to coat the light emitting portion with a fluorescent paint (claim 2). This is because the brightness of the light is increased and the scale is clearly raised. The fluorescent coating does not necessarily have to cover the entire light emitting portion, and may cover only the surface in the direction of the scale, for example.

A phosphorescent material may be used for the light emitting portion (claim 3). A light-storing material is a material that exhibits light-emitting action for a predetermined period of time even after the light is removed after it receives light.For example, zinc, alkaline earth metal, and other sulfides and small amounts of heavy metals, There is a material that contains. When such a phosphorescent material is used, light is applied to the phosphorescent material in advance with a flashlight or the like before surveying. At the time of surveying, of course, the light is emitted even if the light is not applied, so the burden on the operator supporting the staff can be reduced. In addition, the structure of staff is simplified because no power source is required.

Further, as the light emitting portion, a combination of the light storing material and a light emitting device may be combined (claim 4). The operator does not have to apply light to the phosphorescent material. If light is applied to the light-storing material in advance by the light emitting device, it is not necessary to make the light emitting device emit light at the time of surveying, so it is not necessary to secure a power source at the time of surveying. As the light emitting device, a fluorescent lamp, an electric lamp, an optical fiber or the like can be adopted. In this invention, it is preferable to provide a reflecting portion between the light emitting portion and the base material (claim 5). This is because the light from the light emitting portion is emitted in the scale direction without leakage. The reflecting portion is preferably one that reflects light, for example, one that is colored in white, silver, or the like, and more specifically, such a color is directly applied to the base material, or It may be applied to a separate plate material or the like.

[0010]

[Embodiment of the invention]

 Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an external view of a staff 1 according to the present invention. The staff 1 is a prism, and the scale 2 is displayed on the surface. The internal structure of the staff 1 will be described with reference to FIG. 2, which is a sectional view taken along the line AA in FIG.

In the concave portion of the base material 4 having a U-shaped cross section, a white plate 7 serving as a reflecting portion and a light emitting portion 5 are provided in a laminated manner. The light emitting portion 5 is composed of a rod-shaped fluorescent lamp 5a and a light storage material 5b, and a transparent synthetic resin 6 for protecting the fluorescent lamp 5a is filled around the fluorescent lamp 5a. The scale 2 is printed on the surface of the phosphorescent material 5b, and the surface of the scale 2 is covered with a transparent film 8 for protecting it. In the staff 1, the fluorescent lamp 5a is supplied with power by connecting the power cable 3 to an appropriate power source, which lights up. When the light is turned on for a predetermined time, the light is stored in the light storing material 5b, and even if the power is turned off, the light storing material 5b emits light for a while. Surveying work can be performed during this light emission.

FIG. 3 is an external view showing another staff member 11 according to the present invention. The staff 11 is composed of a plurality of rectangular boxes 11a, the lower box holds the upper box, and the staff 11 contracts like a fishing rod. As is clear from the cross-sectional view of FIG. 4, white paint is applied to the concave surface of the base material 13 having a U-shaped front and a hollow cross section near the center, and the phosphorescent material 14 is applied on top of this. It is provided. Further, the scale 12 is printed on the surface of the phosphorescent material 14, and the transparent film 12 is provided so as to cover the scale 12. At the time of storage, another box body is stored in the hollow portion of the base material 13. The staff 1 uses the phosphorescent material 14 by previously irradiating it with light from a separate electric lamp or the like. At the time of surveying, the light stored in the light storing material 14 emits light.

[Brief description of the drawings]

FIG. 1 is an external view showing a staff 1.

FIG. 2 is a cross-sectional view of the staff 1 taken along the line AA.

FIG. 3 is an external view showing the staff 11.

FIG. 4 is a cross-sectional view of the staff 11 taken along the line BB.

[Explanation of symbols]

 1, 11. Staff 2, 12. Scale 5b, 14. Phosphorescent material

Claims (5)

[Utility model registration claims] 1. A staff for use in leveling, comprising a rod-shaped base material provided with predetermined scales, wherein a light emitting portion is provided between the base material and the scales. 2. The staff according to claim 1, wherein the light emitting portion is coated with a fluorescent paint. 3. The staff according to claim 1, wherein the light emitting unit is made of a light storing material. 4. The staff according to claim 1, wherein the light emitting unit is made of a light storing material and a light emitting device. 5. The reflection part is provided between the light emitting part and the base material, according to any one of claims 1 to 4.
Staff described in the section.