JPH0594708U - Plane setting floodlight - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a floodlight that makes it easy to give a predetermined slope to a place with a certain width such as a road slope. [Configuration] The light projecting unit 1 includes, for example, a light emitting diode 7
And a collimation lens 8 and a cylindrical lens 9, which are supported by a horizontal rotary shaft 5 and can swing in the vertical direction. The lens 9 is configured to diffuse and distribute light in a plane and in a fan shape. The horizontal rotary shaft 5 is
It is supported by opposing columns standing on a stand provided on a leveling stand (not shown). The gantry may be horizontally rotatable about a vertical axis.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a plane setting device used for setting an inclined plane or the like such as a slope of a road.

[0002]

[Prior Art]

 Conventionally, a floodlight such as a laser theodolite has been used when laying earth in order to make a certain degree of slope such as a road slope. There is a disadvantage that it is difficult to form a uniform gradient in the lateral width direction in which the range is too narrow with respect to the lateral width.

[0003]

[Problems to be solved by the device]

 The present invention aims to eliminate such inconveniences of the related art.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a light projecting unit for horizontally diffusing light from a light source by a planar diffusing light distributing means such as a cylindrical lens, which is supported by a leveling table on a horizontal support. It is characterized by being provided so as to be swingable around an axis.

[0005]

[Action]

 The light projecting unit distributes the light from the light source in a plane by the plane diffuser and distributes light. The light projecting unit can swing about a horizontal support shaft supported on the leveling table. When the optical unit is set to have a certain inclination by rotating around the horizontal support shaft, the emitted light spreads on the fan-shaped plane in the inclination direction set by the light projecting unit. The operator sets the gradient according to the light while observing the light.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In the drawing, 1 is a light projecting unit, and this light projecting unit 1 is supported by a horizontal rotating shaft 5 between opposing columns 4 and 4 standing on a frame 3 provided on a leveling table 2. Can be shaken. Leveling of the leveling table 2 is performed by the leveling screw 2a. A rotary encoder 6 for detecting the inclination of the optical axis L of the light projecting unit 1 is built in the column 4, and the output of the rotary encoder 6 indicates the amount of rotation of the horizontal rotary shaft 5, that is, the light projecting unit 1 It is possible to freely set the inclination of the optical axis L with respect to the horizontal plane. The output of the rotary encoder 6 is input to a display (not shown) provided on the frame 3 or the column 4, and the tilt of the optical axis of the light projecting unit 1 is displayed on the display.

As shown in FIGS. 3 and 4, the light projecting unit 1 includes a light emitting diode 7, a collimation lens 8 and a cylindrical lens 9 which are built in a case 1 a, and a light 1 from the light emitting diode 7 collimates. The lenses 8 are made parallel to each other, and the cylindrical lens 9 is adapted to diffuse and emit light in a fan shape with a constant thickness in the optical axis L direction.

The present invention is not limited to the cylindrical lens 9 of the above embodiment, but a rod lens or a laser diode that spreads light only in a certain direction can be used. In addition, in the above-described embodiment, the gantry 3 is fixedly supported in the horizontal direction with respect to the leveling table 2, but it may have a structure that can be horizontally rotated about the vertical axis 10 (FIGS. 1, 2, and 4). By doing so, it becomes possible to set a wider plane in the width direction.

[0009]

[Effect of the device]

 According to the present invention, as described above, the light projecting unit that diffuses and distributes the light of the light source in a planar manner can be swung around the horizontal support shaft supported on the reference stand. It has the effect that it is easy to apply a uniform gradient in a wide range.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a side view of the above embodiment.

FIG. 3 is a plan view showing a configuration of a light projecting unit of the above embodiment.

FIG. 4 is a side view showing the configuration of the light projecting unit of the above embodiment.

[Explanation of symbols]

 1 Light Emitting Unit 2 Leveling Platform 3 Frame 5 Horizontal Rotation Axis 6 Rotary Encoder 7 Light Emitting Diode 9 Cylindrical Lens 10 Vertical Axis

Claims (2)

[Scope of utility model registration request] 1. A light projecting unit for diffusing light from a light source in a plane by a plane diffusing and distributing means such as a cylindrical lens is provided so as to be swingable around a horizontal spindle supported by a leveling table. A floodlight for plane setting characterized in that 2. The plane setting projector according to claim 1, further comprising means for detecting an inclination of an optical axis of the projector unit.