JPH07249467A - Lighting device - Google Patents

Abstract

PURPOSE:To provide a lighting device which is not loosened even when it is applied to an appliance that involves vibrations. CONSTITUTION:A plurality of projections 7 are provided at the bottoms of a male threaded part 3 formed on the base 2 of an LED lamp 1 in such a way as discreted over a circumference, and a reverse rotation preventing means consisting of an edge reverse rotation preventing means formed split in the circumferential direction and a bottom preventing means formed so that the length in the axial direction is shorter than the male threaded part 3 is provided in a receptacle member of socket which is equipped with female threads. The reverse rotation preventing means prevents each projection 7 which has passed it from rotating reversely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device used in a place with vibration such as an elevator.

[0002]

2. Description of the Related Art Generally, a lighting device used for illumination or display is called an engine type, and is composed of a socket having a right-handed female screw and a light bulb having a right-handed male screw. The male screw of the light bulb is screwed into, and it is firmly screwed in so that it may not loosen at the end, and the light bulb is installed in the socket.

[0003]

However, when such a lighting device is used for displaying or illuminating a vehicle, such as an elevator, which generates vibrations, the bulb is burnt out due to vibrations, etc., and its replacement is required. The work is troublesome. Therefore, it is conceivable to use an LED lamp that does not have a bulb cut, but since it is an LED lamp that does not have a bulb cut, it is not necessary to adopt the Edison type in consideration of its replacement. However, in order to reuse the existing socket, the LED lamp is configured with a right-handed male screw like a conventional light bulb, and if it is screwed into the socket and used, it may loosen gradually due to the vibration of the elevator, and the looseness is loose. When it occurs, it does not turn on even if it is not cut off, and eventually the advantage of using the LED lamp is lost.

An object of the present invention is to provide a lighting device which does not loosen when used in a device accompanied by vibration.

[0005]

In order to achieve the above object, the present invention forms a light bulb by forming a male screw portion on an outer peripheral portion of a base, and the male screw portion of the base of the light bulb is formed on a female screw portion of a socket. In a lighting device formed by screwing, an LED lamp is used as the light bulb, a plurality of protrusions are formed on the male screw portion of the LED lamp, and a reverse rotation preventing means for preventing reverse rotation of the protrusion is formed on the socket. It is characterized by

[0006]

In the lighting device according to the present invention, first, an LED lamp which does not have a bulb is used as a light bulb, a male screw portion is formed on the LED lamp, and a plurality of protrusions are formed on the male screw portion, while the male screw portion is formed. Since it is used by screwing into the female thread of the socket, the existing socket is diverted to facilitate replacement, and because the socket has reverse rotation prevention means to prevent reverse rotation of the projection, vibration is generated like an elevator It doesn't loosen even when used for things,
It can be lit for a long term by taking advantage of the features of the LED lamp that does not have a bulb break.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an LED lamp which is a main part of a lighting device according to an embodiment of the present invention. LED lamp 1
Has an LED light emitting portion 5 using a light emitting diode, and a base 2 and a light bulb 4 having a male screw portion 3 are provided below the LED light emitting portion 4. L like this
The ED lamp 1 is used in combination with a socket, the details of which will be described later. When the two are screwed together, the base 2 and the electrode 4 are electrically connected to each other, and a predetermined voltage is applied to the LED light emitting portion 5 to emit light. I am trying. The male screw portion 3 of the base 2 of the LED lamp 1 is provided with loosening prevention means. In this embodiment, as shown in FIG. 2 which is a cross-sectional view of FIG. 1, a plurality of threaded portions of the male screw portion 3 are discretely distributed in the circumferential direction, more specifically, at intervals of 45 degrees in the circumferential direction. A protrusion 7 is formed, and the protrusion 7 and a socket reverse rotation preventing device, which will be described later, constitute a loosening prevention device. The height of the protrusion 7 is formed between the screw thread and the screw root. In another embodiment, a plurality of similar protrusions may be formed on the thread portion of the male screw portion 3.

FIG. 3 is a perspective view showing a socket into which the above-mentioned LED lamp 1 is screwed. In the upper part of the main body 8,
There is an opening 8a for inserting the LED lamp 1, and a receiving member 9 having a female screw portion 9a formed in the opening 8a.
Are attached to the body 8 by bolts 10. The receiving member 9 is halved in the circumferential direction and has a C-shaped cross section to form an edge reversal preventing means 9b. Also, the receiving member 9 is axially shorter than the axial length of the male screw portion 3 to lower end reversing preventing means. 9c is formed. Further, at the lower end of the opening 8a, as shown in FIG.
The electrode plate 11 with which the electrode 4 shown in FIG.

Since the protrusion 7 which is the loosening prevention means is provided on the side of the base 2 of the LED lamp 1, when the bulb of the existing lighting device runs out, the new LED lamp 1 is prepared and the existing point is eliminated. Since the light bulb of the lighting device is removed and the new LED lamp 1 having the loosening prevention means is screwed into the existing socket, the existing lighting device can be effectively used, and the light bulb in the existing lighting device can be used. You can quickly respond to the lack of balls.

When the new LED lamp 1 is assembled in the socket shown in FIG. 3, the LED lamp 1 shown in FIG. 1 is inserted into the receiving member 9 and the LED lamp 1 is rotated to rotate the male screw portion 3 therein.
Is screwed into the female screw portion 9a. However, as the LED lamp 1 rotates, the projection 7 passes through the edge reversal prevention means 9b at the open end of the receiving member 9, and the arbitrary projection 7 moves the edge reversal prevention means 9b at the open end of the receiving member 9. When located beyond the open ends beyond, the load during screwing fluctuates and the operator can feel it. When the screwing of the receiving member 9 and the LED lamp 1 approaches the final state, the protrusion 7 shown in FIG.
Of those, the one close to the electrode 4 side exceeds the lower end reverse rotation preventing means 9c of the receiving member 9, and when any protrusion 7 exceeds the lower end reverse rotation preventing means 9c of the receiving member 9, the load during screwing is increased. It fluctuates and the worker can feel it. When the receiving member 9 and the LED lamp 1 are screwed to each other in the final state, the projection 7 at this time goes beyond the edge reversal prevention means 9b at the open end of the receiving member 9 and is located between the open ends. The protrusion 7 is located slightly beyond the lower end reverse rotation preventing means 9c of the receiving member 9. Such a state can be easily achieved by providing a plurality of protrusions 7 or by having the operator estimate from the above-described load variation.

After that, even if vibration is applied to the lighting device, the protrusion 7 located between the open ends beyond the edge reversal prevention means 9b at the open end of the receiving member 9 rotates in the reverse direction and the edge at the open end is rotated. It becomes a resistance when it goes over the reverse rotation preventing means 9b and moves to the female screw portion 9a. Further, the projection 7 positioned slightly beyond the lower end reverse rotation preventing means 9c of the receiving member 9 becomes a resistance when it reversely rotates and moves from the lower end reverse rotation preventing means 9c of the receiving member 9 to the female screw portion 9a. As can be seen from the above description, the protrusion 7, the edge reverse rotation preventing means 9b at the open end of the receiving member 9, and the lower end reverse rotation preventing means 9c of the receiving member 9 constitute the loosening preventing means, and the open end of the receiving member 9 is formed. The edge reversal prevention means 9b and the lower end reversal prevention means 9c,
The reversing prevention means against the reversing of is constituted. In this way, the LED lamp 1 does not turn off when loosened due to vibration, and can fully exhibit the feature of no ball breakage.

FIG. 4 is a perspective view showing a socket which is a main part of a lighting device according to another embodiment of the present invention. The same parts as those of the above socket are designated by the same reference numerals, detailed description thereof will be omitted, and only different parts will be described. The receiving member 9 attached to the main body 8 with the bolt 10 has a smaller open end distance than that in the embodiment shown in FIG. 3, and when the LED lamp 1 is screwed into the receiving member 9, the receiving member 9 is received. The member 9 is elastically deformed in the radial direction. According to this embodiment, when the protrusion 7 passes through the female screw portion 9a of the receiving member 9, the receiving member 9 is elastically deformed, so that the female screw portion 9a of the receiving member 9 is prevented from being scratched by the protrusion 7. You can Moreover, the protrusion 7, the edge reverse rotation preventing means 9b at the open end of the receiving member 9, and the lower end reverse rotation preventing means 9
c and the edge reversal prevention means 9b at the open end of the receiving member 9 and the lower end reversal prevention means 9c constitute a reversal prevention means against the reversal of the projection 7, as in the previous embodiment. Since it is the same, it is possible to obtain the same effect as that of the previous embodiment.

In the above-described embodiment, the socket is provided with the edge reverse rotation preventing means 9b and the lower end reverse rotation preventing means 9c at the open end of the receiving member 9 in order to constitute the loosening preventing means.
Any one of these may be provided to serve as the reverse rotation preventing means for the reverse rotation of the protrusion 7.

[0014]

As described above, the lighting device according to the present invention is
This LED is used together with an LED lamp that does not burn out.
Since the D lamp has a male screw part and this male screw part is screwed into the female screw part of the socket for use, the existing socket is diverted to facilitate replacement and a plurality of protrusions provided on the male screw part of the LED lamp. Since the socket is provided with the reverse rotation prevention means for the reverse rotation of the protrusions to constitute the loosening prevention means, it does not loosen even if it is used in an object such as an elevator that generates vibration, and the LED lamp has the feature that the bulb does not burn out. It can be used for a long time to light up.

[Brief description of drawings]

FIG. 1 is a front view showing an LED lamp which is a main part of a lighting device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the LED lamp shown in FIG.

FIG. 3 is a perspective view showing a socket which is another main part of the lighting device according to the embodiment of the present invention.

FIG. 4 is a perspective view showing a socket which is a main part of a lighting device according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 LED lamp 2 Base 3 Male screw part 7 Protrusion 9 Receiving member 9a Female screw part 9b Edge reversal prevention means 9c Bottom reversal prevention means

Claims (5)

[Claims] 1. A lighting device comprising a male bulb formed on an outer peripheral portion of a base to form a light bulb, and the male thread of the base of the bulb being screwed into a female thread of a socket. And a plurality of protrusions are formed on the male screw part of the LED lamp, and a reverse rotation preventing means for preventing the reverse rotation of the protrusions is formed on the socket. 2. The lighting device according to claim 1, wherein a plurality of the protrusions are discretely formed in a circumferential direction of the male screw portion. 3. The lighting device according to claim 1, wherein the protrusion is formed in a thread trough of the male screw portion. 4. The receiving member according to claim 1, wherein the socket is provided with a receiving member having a female screw portion to be screwed with the male screw portion, and the reverse rotation preventing means is an edge formed in a circumferential direction of the receiving member. A lighting device having a reverse rotation preventing means. 5. The receiving member according to claim 1, wherein the socket is provided with a receiving member having a female screw portion that is screwed with the male screw portion, and the reverse rotation preventing means has an axial length of the receiving member that is the male screw portion. A lighting device characterized in that the lower end reverse rotation preventing means is formed to be shorter than the axial length of the lighting device.