JPH0211280Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a light horizontal holding device mainly used for a spar buoy or a large light buoy. Super buoys, commonly used as navigation aids,
Alternatively, in the case of large light buoys, the light from the light source is focused horizontally using a lens to achieve a long distance, so that it can be recognized from a distance.
When the entire floating body sways due to waves or tilts in one direction due to currents, the light equipment also tilts accordingly.
As a result, the optical axis was at an angle with respect to the horizontal direction, and in extreme cases, the navigator had the disadvantage of not being able to see the lights. In order to prevent this, in recent years there have been systems that use a gimbal mechanism to hold the outer periphery of the light equipment so that the optical axis always remains horizontal even if the super buoy or light buoy swings or tilts. are doing. These conventional devices had the defect that the gimbal portion was larger than the lamp body and occupied the installation space, and the lamp could tilt due to wind pressure. The present invention solves these deficiencies and inconveniences, and provides a light leveling device that functions not only as a radar reflector but also as a wind pressure balancer. The contents will be explained below according to the embodiments shown in the attached drawings. Fig. 1 is a partially cutaway front view of the lamp horizontal holding device according to the present invention with the lamp unit mounted on the top surface, and Fig. 2 is a cross-sectional view taken along line AA in Fig. 1, showing a plan view of the gimbal mechanism. . As shown in the figure, a circular horizontal board 2 on which a lamp unit 1 is attached, and a balance weight 3 in the shape of a substantially inverted cone provided below are arranged radially at an angle of 90 degrees to each other. A swinging section is constructed by connecting four perpendicular flat plates 4 having a radar reflecting function, such as corrosion-resistant aluminum alloy plates. The radar reflectors (4) are arranged so that their inner edges face each other with a gap 4' in between. The narrow gap 4' allows wind to escape, reduces wind pressure resistance, and allows for a larger flat plate area. The size of the gap 4' and the area of the radar reflector are determined so that when wind pressure is applied, the resistance is balanced between the upper and lower portions of the horizontal substrate 2. An inner ring 6 and an outer ring 7 are arranged on the outer periphery of the horizontal base plate 2 and are spaced apart from each other at appropriate intervals, and connecting members and bearings 5, 5', and 1 shown in FIG. 2 rotatably connect them.
0, 10', shaft 8, 8', 11, 11', boss 9,
9', 12, and 12' constitute a gimbal mechanism. The outer ring 7 of this gimbal mechanism is connected to a plurality of supports 13
The lamp horizontal holding device of the present invention is constructed by supporting it with a support frame 15 constructed as shown in FIG. Note that 16 is a protective ring that prevents excessive movement. According to the present invention, the gimbal mechanism not only holds the lamp horizontally, but also has the following effects. That is, it is more compact than the conventional gimbal mechanism, the center of gravity is lowered, and by making the shape of the balance weight 3 into an inverted truncated cone shape, the outer diameter of the support frame 15 can also be reduced, making the device more compact. It is lightweight. In addition, because a flat plate 4 with a radar reflecting effect is used as the connecting body that connects the balance weight 3 to the horizontal board 2, and because the reflecting plate 4 is always positioned vertically due to the gimbal mechanism, radar coming from the horizontal direction can be easily detected. It is a two-sided radar reflector that is ideal for reflecting radio waves, and can be used as a buoy by radar from a ship even in weather conditions such as dense fog or heavy rain that prevent lights from reaching far, or during the daylight hours. It becomes easy to recognize the position of When a gimbal mechanism is used, the influence of wind cannot be ignored, but according to the present invention, the support frame 15 has good ventilation, the radar reflector 4 acts as an effective wind pressure plate, and the horizontal substrate 2, the wind pressure applied to the lamp unit 1 is balanced, so the inclination due to the wind pressure is greatly reduced. Furthermore, if the size (side area) of the lamp changes depending on the required luminous intensity, the wind pressure can be easily balanced by adjusting the gap 4' of the radar reflector 4 appropriately. Support frame 1 on the outside of balance weight 3
Since a protective ring 16 is provided on the inner periphery of the lamp 5, conventionally the lamp unit 1 could unexpectedly tilt at a large angle with respect to the support frame 15 during stormy weather, which could cause a malfunction. The balance weight 3 is received by a protective ring 16 to prevent the lamp part 1 from being excessively tilted.

[Brief explanation of the drawing]

Figure 1 shows one of the lamp horizontal holding devices according to the present invention.
A partially cutaway front view, FIG. 2 shows a cross-sectional view taken along the line AA in FIG. 1, that is, a plan view of the gimbal mechanism. 1 ... Lamp unit, 2... Horizontal board, 3... Balance weight, 4... Radar reflector, 4'... Slit,
5, 5', 10, 10'... Bearing, 6... Inner ring, 7
...Outer ring, 8, 8', 11, 11'...Shaft, 9,
9', 12, 12'...boss, 13...pillar, 15
...Support frame body, 16...Protection ring.

Claims (1)

[Scope of utility model registration request] A horizontal board with a lamp mounted on the top and a balance weight installed below are connected by four vertical radar reflectors arranged radially at a 90 degree angle with a narrow gap at the inner edge. , the board is held by a gimbal mechanism consisting of an inner ring and an outer ring provided on the outside of the board and a support member rotatably connecting them, and the outer ring is further supported by a support to balance wind pressure resistance above and below the board. A light horizontal holding device characterized by having a radar reflecting function in the horizontal direction.