JPH0290483A - Connection structure of lamp and lamp socket - Google Patents

Abstract

PURPOSE:To surely prevent a lamp from being misused and also remove limitations in selecting a material for the outer cover of its socket by setting the size and position of a protrusion or those of a receiving portion so that the protrusion can be engaged with the receiving portion when the lamp and the socket are equal in wattage. CONSTITUTION:At least either one of the size, position or number of a protrusion 23 or those of a receiving portion 24 is set to a value required for enabling the protrusion 23 to be engaged with the receiving portion 24 when a lamp 1 and a lamp socket 2 are equal in wattage. In this way, when the lamp and the lamp socket are not equal in wattage, the protrusion 23 can not be engaged with the receiving portion 24, and connection of the lamp 1 to the socket 2 is disabled accordingly. The lamp 1 can therefore be surely prevented from being misused.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a connection structure between a lamp and a lamp socket.

[Conventional technology]

A so-called bayonet type connection structure is used to connect a lamp and a lamp socket, in which the lamp cap is inserted into the lamp socket and rotated to connect.

In this case, since the dimensions of the lamp cap and the lamp socket holder are the same regardless of the wattage, the wattage was clearly distinguished by labeling.

[Problem to be solved by the invention]

However, sometimes people forget to read the label and connect a lamp with a different wattage than the lamp socket.
If the wattage of the lamp was greater than the wattage of the lamp socket, there was a risk of accidents due to abnormal heat generation. In addition, considering the possibility that high-wattage lamps will be connected to lamp sockets, we have used porcelain with poor dimensional accuracy and thermosetting resins such as phenol, which have poor productivity, as outer shell materials for lamp sockets. I was using it.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a connection structure between a lamp and a lamp socket that can reliably prevent misuse of the lamp and that does not limit the outer shell material of the lamp socket.

[Means to solve the problem]

The connection structure between a lamp and a lamp socket according to claim +11 includes a lamp having an engaging protrusion formed on the circumferential surface of the base and a protrusion for preventing incorrect insertion; L for causing the protrusion to enter in the insertion direction of the cap and in the rotation direction of the cap;
a lamp socket having a letter-shaped groove formed in the inner circumferential surface of the recess and a receiving portion that engages with the protrusion;
At least one of two sizes or numbers of the protrusion and the receiving part is set in a relationship such that the protrusion and the receiving part can be engaged when the wattage of the lamp and the lamp socket are the same. It is.

In the connection structure between a lamp and a lamp socket according to claim (2), the protrusion is formed to protrude in the radial direction on the outer peripheral surface of the base, and the receiving portion is formed by a notch in the receiver of the lamp socket. There is.

In the connection structure between a lamp and a lamp socket according to claim (3), the protrusion is formed so as to protrude from the base side of the base in the insertion direction, and the receiving part is formed by a notch in the receiving part of the lamp socket. ing.

[Effect]

According to the connection structure between a lamp and a lamp socket of the present invention, the size of the protrusion and the receiving part are set in a relationship such that the protrusion and the receiving part can be engaged when the wattage of the lamp and the lamp socket are the same. Since at least one of the numbers is set, if the wattage is different, the protrusion and the receiving part cannot engage, so the lamp cannot be connected to the lamp socket, and therefore, misuse of the lamp is surely prevented. be able to. Therefore, it is possible to reliably prevent accidents caused by abnormal heat generation of lighting equipment, and since the temperature of the lamp socket does not rise, it is possible to use thermoplastic resin, etc., which has good productivity, and is free from material restrictions for the outer shell material of the lamp socket. do not have.

〔Example〕

A first embodiment of the present invention will be described based on FIGS. 1 to 3. That is, this lamp-lamp socket connection structure includes a lamp 1 and a lamp socket 2.

The lamp 1 has an engaging protrusion 4 formed on the circumferential surface of the base 3 and a protrusion 23 for preventing incorrect insertion. The lamp 1 is an incandescent lamp as an example, and an insulator 19 is provided on the end surface 8 of the base 3.
Contacts 9.10 are provided via. The cap 3 is formed by drawing a sheet metal. The protrusion 23 is formed by hammering out the outer peripheral surface of the base 3 so as to protrude in the radial direction. 11 is a lamp filament.

The lamp socket 2 has a recess 5 into which the cap 3 is inserted, and an L-shaped groove 2 into which the engagement protrusion 4 enters in the insertion direction of the cap 3 and in the rotating direction of the cap 3.
0 is formed on the inner circumferential surface of the recess 5, and a receiving portion 24 that engages with the protrusion 23 is provided. Lamp socket 2 has four parts 5
At the same time, the contact 1 is inserted into the bottom of the recess 5.
3.14 has been established. The groove portion 20 includes a first groove 6 into which the engagement protrusion 4 enters in the insertion direction, and a second groove 7 into which the engagement protrusion 4 enters by rotating the base 3 in the circumferential direction. A notch 12a is formed in the receiver 12 corresponding to the groove 20. The receiving portion 24 is formed by a notch in the receiving metal 12. 15 is a cylindrical contact main body, 16 is a contact pressure applying spring that also serves as a locking pressure to the second groove 7 of the engagement protrusion 4, 17 is a connection screw, 18 is a base connection screw, and 21 is a base. The stand 22 is the socket body.

Furthermore, when the wattage of the lamp 1 and the lamp socket 2 are the same, the projection 23 and the receiving part 24 can be engaged with each other.
The size of the protrusion 23 and the receiving part 24.

At least one of the position and number is set. In the case of the protrusion 23, the size is the amount of protrusion and the diameter or width;
In the case of the receiving portion 24, this is the depth H and the width. In the case of the projection 23, the position is the height h from the contact point 9.10 and the separation angle θ in the circumferential direction from the engagement projection 4, and in the case of the receiving portion 24, it is the separation angle θ in the circumferential direction from the groove portion 20.

Place the base 3 of the lamp 1 into the holder 1 of the recess 5 of the lamp socket 2.
2, the engaging protrusion 4 is aligned with the groove 20 and inserted. At this time, since the wattage is different, for example, θ≠
If the θ or the number are different, the protrusion 23 and the receiving portion 24 cannot be engaged, and the lamp 1 cannot be connected to the lamp socket 2. Furthermore, if h is small and the protrusion 23 is engaged with the receiving portion 24 before the base 3 is fully housed in the receiver 12, the engaging protrusion 4 cannot be rotationally engaged with the groove portion 20. However, since the dimensions are set such that they will engage when the wattage matches, the engagement protrusion 4 can enter the groove 20, and when the base 3 of the lamp 1 is inserted into the recess 5 and rotated, the contacts 9 and 10 will be connected to the contact 13.
．． 14 , the lamp 1 is supplied with power and turned on, and the engaging protrusion 4 is locked in the second groove 7 of the groove portion 20 .

On the other hand, when the lamp 1 is rotated and pulled out, the engaging protrusion 4 disengages from the groove 20 along the groove 20 and also detaches from the contact 13, 14, thereby extinguishing the smoke.

According to this embodiment, when the wattage of the lamp 1 and the lamp socket 2 are the same, the projection 23 and the receiving portion 24 can be engaged with each other. Since at least one of them is set, if the wattage is different, the protrusion 23 and the receiving part 24 cannot be engaged, so the lamp 1 cannot be connected to the lamp socket 2, and therefore it is ensured that the lamp 1 is not used incorrectly. can be prevented. Therefore, accidents caused by abnormal heat generation of lighting equipment can be reliably prevented, and the lamp socket 2
Since the temperature of the lamp socket 2 does not become high, thermoplastic resin or the like with good productivity can be used, and there are no restrictions on the material of the outer shell material of the lamp socket 2.

Further, in this embodiment, since the protrusion 23 is formed by hammering out the outer peripheral surface during the drawing process of the cap 3, various combinations can be easily made with a small investment.

Note that the receiver 12 is the socket body 22 of the lamp socket 1.
may be integrally configured.

A second embodiment of the invention is shown in FIG. That is, the protrusion 23 is formed on the base side of the base 3 so as to protrude in the insertion direction, and the receiving part 24 is formed by a notch in the receiving part 12 of the lamp socket 2, as in the first embodiment. The rest is the same as the first embodiment.

As another embodiment, the protrusion 23 and the receiving portion 24 may be set to dimensions that do not allow the lamp 1 with a large wattage to be connected to the lamp socket 2 with a small wattage. In this case, even if the lamp 1 whose wattage is smaller than the wattage of the lamp socket 2 is connected to the lamp socket 2, the lamp socket 2 will not generate abnormal heat, so the same effect as described above can be obtained. Moreover, the number of dimensional types can be reduced.

〔Effect of the invention〕

The connection structure between the lamp and the lamp socket of the present invention is such that the size of the projection and the receiving portion is adjusted to two or more positions so that the projection and the receiving portion can be engaged when the wattage of the lamp and the lamp socket are the same. Because you have set at least one of the
If the wattage is different, the protrusion and the receiving part cannot be engaged, so the lamp cannot be connected to the lamp socket, and therefore misuse of the lamp can be reliably prevented. Therefore, it is possible to reliably prevent accidents caused by abnormal heat generation of lighting equipment, and since the temperature of the lamp socket does not rise, it is possible to use thermoplastic resin, etc., which has good productivity. It has the effect of not being restricted.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the lamp according to the first embodiment of the present invention in a separated state, FIG. 2 is a plan view of the lamp socket, FIG. 3 is a partial perspective view of the lamp, and FIG. 4 is a second embodiment of the lamp. FIG. 3 is a partial side view of the example. DESCRIPTION OF SYMBOLS 1... Lamp, 2... Lamp socket, 3... Base, 4... Engaging protrusion, 5... Recessed part, 20... Groove part, 23... Protrusion, 24... Receptacle Part diagram diagram

Claims (3)

[Claims] (1) A lamp having an engaging protrusion formed on the circumferential surface of the cap and a protrusion for preventing incorrect insertion; and a recess into which the cap is inserted, and the engaging protrusion is inserted in the direction of insertion of the cap; a lamp socket having an L-shaped groove formed in the inner circumferential surface of the recess and a receiving portion that engages with the protrusion, the wattage of the lamp and the lamp socket being a relationship in which the protrusion and the receiving portion can be engaged at the same time;
A connection structure between a lamp and a lamp socket, characterized in that at least one of the size, position, and number of the protrusion and the receiving portion is set. (2) The lamp and lamp socket according to claim (1), wherein the protrusion is formed to protrude in the radial direction on the outer peripheral surface of the base, and the receiving portion is formed by a notch in the receiving part of the lamp socket. connection structure. (3) The lamp and lamp socket according to claim (1), wherein the protrusion is formed to protrude in the insertion direction from the base side of the base, and the receiving portion is formed by a notch in the receiving part of the lamp socket. connection structure.