JPH0345129Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an improvement of a light beam warning device having a structure in which a light transmitter and a light receiver are built into different casings, and each casing is connected in multiple stages.

[Prior art and its drawbacks]

Conventionally, in a light beam warning device having this type of structure, a housing 11 as shown in FIG. 3, for example, has been used. Four arcuate holes 12 ₁ , 12 ₂ , 12 ₃ , and 12 ₄ are symmetrically formed in the upper surface of the housing 11, and the arcuate holes 12 ₁ to 12 ₄ are formed in the lower surface of the housing 11, respectively. Arc-shaped holes 13 ₁ , 13 ₂ ,
13 ₃ and 13 ₄ are formed.

FIG. 4 shows a light beam type warning device using this housing 11. For example, a light transmitter unit 21 is built into the lower housing ₁₁₁ , and the light from a light emitting element 22 mounted on a printed circuit board 22 is converted into parallel light by a lens 24 to be used in other warning devices. It is designed to send a warning light to the receiver that is exposed to the light. On the other hand, a light receiver unit 25 is built into the upper housing ₁₁₂ , and a light receiving element (not shown) receives warning light transmitted from other warning devices through a lens 26. It's summery. Case ₁₁ of the light transmitting device and case 1 of the light receiving device
1 ₂ refers to the arcuate holes 12 ₁ to 12 ₄ , 13 ₁ to 1
3 _{and 4} , and are tightened and fixed by a plurality of sets of bolts and nuts 28.

In this warning device, when installing the light transmitting device or the light receiving device in any direction, the bolt 27
This is done by rotating the housing 11 ₁ or the housing 11 ₂ along the arcuate holes 12 ₁ to 12 ₄ and 13 ₁ to 13 ₄ after removing the nuts 28 and 28 .

However, in such a structure, when adjusting the direction, all the bolts 27... and nuts 28
It had the disadvantage that it was necessary to remove it one by one, which took time and effort.

[Purpose of the invention] The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a light beam warning device that allows easy direction adjustment and shortens adjustment time.

[Key points of the idea]

The present invention provides a light beam warning device with a multi-stage connection structure of a light transmitter and a light receiver, in which each housing housing the light transmitter and the light receiver has a bolt insertion hole in the center on the opposing surface. A pair of concave portions and a convex portion are provided that fit into each other, and each housing is connected by tightening the concave portion and the convex portion with a set of bolts and nuts, and when adjusting the direction, the bolts and nuts are tightened. By loosening the bolt, the housing is rotated around the bolt.

[Example of idea]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIG. 1a shows the front structure of, for example, a light transmitting device constituting the optical warning device of the present invention, and FIG. 1b similarly shows the cross-sectional structure. In the figure, 31 is a housing, and a convex portion 32 in the shape of, for example, a truncated cone is provided at the center of the upper surface of the housing 31, for example. On the other hand, a truncated cone-shaped recess 33 is provided, for example, in the center of the lower surface of the housing 31 and is large enough to fit the projection 32 therein. Holes 32a and 33 for bolt insertion are provided in the convex portion 32 and the concave portion 33, respectively.
a is formed. Note that the casing on the light receiving device side has a similar structure. A light transmitter unit 34 is built in the housing 31, and the printed circuit board 3
Light emitted from a light emitting element 36 mounted on the light emitting device 5 is converted into parallel light by a lens 37 and sent out as a warning light.

FIG. 2 shows a two-tiered structure in which a light receiving device 42 is stacked on the light transmitting device 41. That is, the convex portion 32 of the casing 31 on the light transmitting device 41 side is connected to the light receiving device 4.
It is fitted into the recess 33 of the housing 31 on the second side, and is tightened and fixed with bolts 43 and nuts 44 through bolt insertion holes 32a and 33a.

In this way, in the warning device of the present invention, the light transmitting device 41 is connected by a set of bolts 43 and nuts 44.
and the light receiving device 42 can be integrated. Therefore, when adjusting the direction of the light transmitting device 41 or the light receiving device 42 at the site, the housing 31 can be rotated 360 degrees by simply loosening the bolts 43 without having to remove them one by one as in the conventional case. can.
Therefore, the adjustment is easy and the adjustment time can be significantly shortened compared to the conventional one.

In the above embodiment, the convex portion 32a and the concave portion 33a are each shaped like a truncated cone, but the present invention is not limited to this, and may instead be shaped like a cylinder, for example. Furthermore, in the above embodiment,
Although we have described a warning device with a structure in which two layers are stacked in the vertical direction, a structure in which they are stacked in two layers in the horizontal direction may also be used.
It goes without saying that the present invention can also be applied to warning devices having tiers, 4 tiers, etc. configurations. Furthermore, the housing 31 on the light transmitting device 41 side
The convex part and the concave part of the casing 31 on the light receiving device 42 side may be reversed.In short, a pair of convex part 32 and a concave part 33 that fit into each other are provided on the opposing surfaces between the casings. Bye.

[Effect of idea]

As described above, according to the present invention, the light transmitting device or the light receiving device can be easily fixedly installed at any angle of 360 degrees with a set of bolts and nuts.
The azimuth angle can be easily adjusted, the adjustment time can be shortened, and a light beam warning device can be provided with improved on-site maintainability.

[Brief explanation of drawings]

Figures 1a and 1b show the configuration of a light transmitting device according to an embodiment of the present invention, where figure a is a front view and figure b is a front view.
is a cross-sectional view taken along the line A-A′ in FIG. FIG. 4 is a sectional view showing the assembled state of a conventional warning device. 31... Housing, 32... Convex portion, 32a, 32b
... hole, 33 ... recess, 34 ... light transmitter unit, 35 ... printed circuit board, 36 ... light emitting element,
37...Lens.

Claims (1)

[Scope of utility model registration request] In a light beam alarm device configured by stacking a first casing containing a light transmitter and a second casing containing a light receiver in multiple stages, the first casing and the second casing A pair of convex portions or concave portions each having a bolt insertion hole in the center and formed to be rotatable by fitting each other are provided on opposing surfaces of the first casing and the second casing. The body is fixed by fitting the convex portion and the concave portion, and tightening and fixing the body with a bolt and a nut through the bolt insertion hole, and when adjusting the direction, loosen the bolt and nut and move the body to the first casing or the second casing. A light beam warning device that operates by rotating the body around the bolt.