JPS5941584Y2 - beacon light - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a marker lamp with an improved lamp socket fixture.

2. Description of the Related Art Conventionally, as a marker light provided on an airport runway, there is a lamp body having a light projection window, in which a socket with a lamp attached thereto is fixed by a fixture, and such a light body is attached to a base.

In this case, the fixture for fixing the lamp socket to the lamp body is, for example, a screw 1 with a square head, as shown in FIG. .

At this time, a spring washer is generally known to prevent the screw 1 from loosening, but if this washer is used as is, the socket 2 surface is likely to be scratched, and this will expand due to thermal expansion and contraction when the lamp is turned on and off, damaging the socket. Sometimes.

For this reason, conventionally, a spring plate 3 is pressed against the head of the screw 1 to prevent the screw 1 from loosening, without using a spring washer.

However, according to this method, the tightening force of the screw 1 varies depending on the operator, and this may cause damage to the socket.

Also, if the lower surface of the head of screw 1 comes into direct contact with socket 2,
There is a drawback that the socket 2 may be damaged due to the corners and stiffness of the head, and the socket 2 may be damaged due to this.

This invention was made in order to eliminate the above-mentioned drawbacks, and it is an object of the present invention to provide a marker lamp in which a lamp socket can be stably fixed by using a fixture that can securely prevent loosening and prevent excessive tightening. With the goal.

An embodiment of this invention will be described below with reference to the drawings.

In FIG. 2, reference numeral 11 denotes a lamp body, and two light projecting windows 12 and 12 are formed in the front of this lamp body 11.

Further, inside the lamp body 11, as shown in FIG. 3, a lens system 13.13 is provided at a position corresponding to the light projection window 12.12.

A heat-resistant and insulating lamp socket 14 is placed between the lens systems 13 and 13.

As shown in FIG. 4, lamp support fittings 15.15 are attached to both ends of the socket 14, and a lamp 16 which emits light from the light projection window 12 is supported between the fittings 15.15.

In this case, the socket 14 has mounting parts 14a, 14a at both ends.
is tightened and fixed to the lamp body 11 by a fixture 17.

This fixture 17 consists of a screw 18 with a square head and a holding fitting 19, as shown in FIGS. 5a and 5b.

The screw 18 has a stepped portion 1 in the middle to regulate the screwing amount.
8a, and the presser metal fitting 19 is L-shaped and is provided by bending a pressing piece 19b perpendicularly to the leg portion 19a, and further cutting and raising the bent portion to form a step insertion hole for the screw 18. 19
c and also forms an upright piece 19d that serves as a locking portion that comes into contact with the head of the screw 18.

As shown in FIG. 6, such a fixture 17 is constructed by applying a presser metal fitting 19 to the mounting portion of the socket 14, and inserting the stepped portion 18a of the screw 18 into the insertion hole 19c of the metal fitting 19. By tightening, the socket 14 is fixed to the lamp body 11 via the presser metal fitting 19.

In this case, the upright piece 19b of the presser metal fitting 19 presses the head of the screw 18 to prevent the screw 18 from loosening.

In addition, since the screwing amount of the screw 18 is restricted by the stepped portion 18a of the large diameter portion of the screw 18, the socket 1
The pressing force of 4 is kept constant and excessive tightening is prevented.

Then, the lamp body 11 configured in this manner is attached to a pace (not shown).

In this case, the lamp support fitting 15.15 of the socket 14
is electrically connected to the power line inside the base.

According to this structure, the lamp socket fixture can be securely prevented from loosening, and excessive tightening can be prevented, so that the lamp socket can be stably fixed.

In addition, since the lamp socket is fixed with the pressing force of the elastic holding fitting, it is possible to prevent damage to the socket surface as much as possible compared to the conventional method in which the lamp socket is fixed directly with screws, and damage to the socket caused by this can be prevented as much as possible.

Furthermore, the elasticity of the holding fitting can absorb the thermal expansion and contraction of the socket itself due to the temperature when the lamp is turned on and off, so that the lamp socket can be fixed more stably from this point of view as well.

It should be noted that this invention is not limited to the above-mentioned embodiments, but can be implemented with appropriate modifications without changing the gist.

For example, the presser metal fitting 19 may be formed by folding back a single plate as shown in FIG.

Further, the screw 18 is not limited to a horn type screw, but may be a knurled screw (groove type) as shown in FIG.

As described above, according to this invention, it is possible to provide a marker lamp in which the lamp socket can be stably fixed by using a fixture that can securely prevent loosening and prevent excessive tightening.

[Brief explanation of drawings]

Figure 1 is a perspective view showing a fixture for a lamp socket used in a conventional marker light, Figures 2 and 3 are perspective views and internal configuration diagrams showing one embodiment of this invention, and Figure 4 is an implementation of the same. Perspective view of the lampholder used in the example, Figure 5a,
b is a perspective view of the fixing device used in the same embodiment, FIG. 6 is a diagram for explaining the same fixing device, and FIGS. 7 and 8 are a sectional view and a perspective view showing other embodiments of this invention, respectively. It is. 1... Screw, 2, 14... Lamp socket, 2a... Mounting part, 3... Spring plate, 11... Lamp body , 12... floodlight window, 1
3...Luns system, 15...Lamp support fitting, 16...Lamp, 17...Fixing tool, 18...Screw, 18a...・・・・・・Dan section, 1
9... Presser metal fitting, 19a... Leg part, 1
9b...Press, 19c...Step part insertion hole, 19d...Upright piece.

Claims (3)

[Scope of utility model registration request] (1) A lamp body forming a light projection window, a lamp installed in the lamp body so as to emit light from the light projection window, a socket supporting this lamp, and a stepped portion regulating the amount of screwing. a presser metal fitting consisting of a screw leg portion having a screw leg portion, a presser piece provided perpendicularly to the leg portion and having a step insertion hole for the screw, and a locking portion contacting the head of the screw; A marker light comprising: a fixture for fixing the socket to the lamp body with a screw with a constant pressing force. (2) The marker lamp according to claim 1, wherein the retainer of the fixing device is integrally formed with the locking portion of the screw. (3) The marker lamp according to claim 1 or 2, wherein the head of the screw of the fixing device is formed into an angular shape.