Light bulb holder structure and light

Abstract

A light bulb holder structure includes a bulb cap and a connector. By integral molding, the connector made of insulating material is molded with one end of the bulb cap to form an integration. The protrusion on the connector can increase the creepage distance of the light bulb, so as to improve waterproof performance of the light bulb and suppress erosion caused by ingress of water. In addition, the bulb cap may further be provided with connection parts to secure the combination of the connector and the bulb cap. Further, the end portion of the connector close to bulb cap may be provided with a threaded segment, and the threaded segment is an optional structure which can not only greatly improve the creepage distance, but also fix the relative position of the connector and the bulb cap when the light bulb is screwed into the socket.

Claims

1. A light bulb holder structure, comprising: a bulb cap, wherein the bulb cap has a cylindrical structure and is formed of a conductive material, and an end of the bulb cap is connectable with a light socket; a connector, wherein the connector is made of insulating material and is molded at the end of the bulb cap to form an integration, a center of the connector is provided with a protrusion extending outward from the connector in a direction away from the bulb cap, a center of the protrusion is provided with a through hole, and the through hole is used for inserting a conductive element; wherein, the end of the bulb cap is provided with a connection part fitted and connected with the connector, and the connection part is a through hole or a blind hole; the end of the bulb cap close to the connector is provided with a contracted part, more than one connection part is provided, and the connection parts are arranged on the contracted part at intervals.

2. The light bulb holder structure according to claim 1, wherein an outer circumferential side of the bulb cap is provided with connection threads matched with the light socket, and the protrusion has a shape of circular truncated cone.

3. The light bulb holder structure according to claim 2, wherein a end portion of the protrusion away from the bulb cap is further provided with a sunken portion matched with a structure of the conductive element.

4. The light bulb holder structure according to claim 2, wherein an end portion of the connector close to the bulb cap is provided with a threaded segment matched with a structure of the end of the bulb cap, and threads on the threaded segment suit the connection threads.

5. The light bulb holder structure according to claim 4, wherein the threaded segment of the connector is 0.1-0.3 times the length of the bulb cap in axial direction of the bulb cap.

6. The light bulb holder structure according to claim 5, wherein the connector is a hollow shell structure, an inner diameter of an end portion of the threaded segment close to the bulb cap is smaller than that of the bulb cap, and the end portion of the threaded segment close to the bulb cap is fitted with an inner peripheral side of the end of the bulb cap.

7. The light bulb holder structure according to claim 6, wherein more than one connection part is provided and the connection parts are spaced with intervals on a circumferential sidewall of the bulb cap at the end close to the threaded segment, and the end portion of the threaded segment close to the bulb cap is provided with convex parts extending outward, and the convex parts are arranged in one-to-one correspondence with the connection parts and are filled in the connection parts; when the connection parts are blind holes, the connection parts are arranged on an inner circumferential side of the bulb cap; when the connection parts are through holes, an outer contour of the convex parts suits with an outer circumferential side of the bulb cap.

8. The light bulb holder structure according to claim 1, wherein the connection parts are through holes, and the end portion of the connector close to the bulb cap penetrates into the contracted part to partially encapsulate the contracted part and completely encapsulate the connection parts.

9. A light, comprising a light bulb holder structure, wherein the light bulb holder structure comprises: a bulb cap, wherein the bulb cap has a cylindrical structure and is formed of a conductive material, and an end of the bulb cap is connectable with a light socket; a connector, wherein the connector is made of insulating material and is molded at the end of the bulb cap to form an integration, a center of the connector is provided with a protrusion extending outward from the connector in a direction away from the bulb cap, a center of the protrusion is provided with a through hole, and the through hole is used for inserting a conductive element; wherein, the end of the bulb cap is provided with a connection part fitted and connected with the connector, and the connection part is a through hole or a blind hole; the end of the bulb cap close to the connector is provided with a contracted part, more than one connection part is provided, and the connection parts are arranged on the contracted part at intervals.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In order to make the description of the embodiments of the present disclosure or the technical solutions in the prior art clearer, drawings that are used for illustrating the embodiments or prior art are briefly introduced below. Obviously, the drawings described below merely contain some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings may also be derived according to these drawings without creative efforts.

(2) FIG. 1 is a schematic diagram showing one implementation structure of a bulb cap according to embodiment 1 of the present disclosure.

(3) FIG. 2 is a cross-sectional diagram showing one implementation structure of a bulb cap according to embodiment 1 of the present disclosure.

(4) FIG. 3 is an exploded view showing one implementation structure of a bulb cap according to embodiment 1 of the present disclosure.

(5) FIG. 4 is a schematic diagram showing one implementation structure of a bulb cap according to embodiment 2 of the present disclosure.

(6) FIG. 5 is a cross-sectional diagram showing one implementation structure of a bulb cap according to embodiment 2 of the present disclosure.

(7) FIG. 6 is an exploded view showing one implementation structure of a bulb cap according to embodiment 2 of the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

(8) The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It is particularly pointed out that the following embodiments are only used to illustrate the present disclosure rather than limit the scope of the present disclosure. Likewise, the following embodiments constitute part of rather than all embodiments of the present disclosure, and all other embodiments derived by those of ordinary skill in the art without creative effort fall within the scope of protection of the present disclosure.

Embodiment 1

(9) As shown in FIGS. 1-3, the present embodiment provides a light bulb holder structure, which includes a bulb cap 1 and a connector 2. The bulb cap 1 has a cylindrical structure and is formed of a conductive material (for example, copper), and an end of the bulb cap 1 is connectable with a light socket. The connector 2 is made of insulating material (for example, plastics or silicone) and is integrally formed at the end of the bulb cap 1, a center of the connector 2 is provided with a protrusion 21 extending outward from the connector 2 in a direction away from the bulb cap 1, a center of the protrusion 21 is provided with a through hole 22, the through hole 22 is used for inserting a conductive element (in practice, conductive element may be conductive rivet).

(10) In addition, when the connector 2 is integrally formed at the end of the bulb cap 1 by injection molding, if the joint between the connector 2 and the bulb cap 1 is insufficient, there may still be the chance that the connector 2 becomes detached with the bulb cap 1. Especially after long-term use of the bulb, repeated thermal expansion and contraction of the connector 2 may affect the strength of the joint with the bulb cap 1. Therefore, in this embodiment, the end of the bulb cap 1 is provided with connection part 12 that is fitted and connected with the connector 2. The connection part 12 may be a through hole, but it is not limited to the form of through hole, it may also be a blind hole. The shape of the connection part 12 may be circular, triangular, quadrilateral or other polygonal structures and so on.

(11) In order to facilitate the installation of the light bulb, in this embodiment, an outer circumferential side of the bulb cap 1 is provided with connection threads 11 matched with the light socket. In this embodiment, the protrusion 21 on the connector 2 can increase the creepage distance of the bulb holder structure to a certain extent. In order to improve the structural strength of the protrusion 21 and avoid damage caused by stress concentration, the protrusion 21 is a truncated cone-shaped structure which allows the stress applied on one side of the protrusion 21 to be released through the arc-shaped peripheral side structure.

(12) In addition, in order to make the through hole 22 of the protrusion 21 more tightly fit with the conductive rivet of the bulb during assembling, in this embodiment, an end portion of the protrusion 21 away from the bulb cap 1 is further provided with a sunken portion 211 matched with the structure of the conductive element.

(13) In order to further improve the creepage distance, in this embodiment, an end portion of the connector 2 close to the bulb cap 1 is provided with a threaded segment 23 matched with a structure of the end of the bulb cap 1. The threads on the threaded segment 23 suit the connection threads 11. Preferably, the threaded segment 23 of the connector 2 is 0.1-0.3 times the length of the bulb cap 1 in axial direction of the bulb cap 1.

(14) With the above construction, when the bulb holder structure is screwed into the light socket, the threaded segment 23 on the connector 2 and the connection threads 11 on the bulb cap 1 are both threadedly connected with the light socket, so that the creepage distance of the bulb can be increased, while the relative position of the connector 2 and the bulb cap 1 can be further fixed to secure the joint.

(15) In the configuration that the connector 2 is provided threaded segment 23, preferably, the connector 2 in this embodiment is a hollow shell structure, and an inner diameter of an end portion of the threaded segment 23 close to the bulb cap 1 is smaller than that of the bulb cap 1, so the end portion of the threaded segment 23 close to the bulb cap 1 is fitted with an inner peripheral side of the end of the bulb cap 1.

(16) In terms of the specific implementation structure of the connection part 12, in this embodiment, more than one connection part 12 may be provided, and the connection parts 12 are spaced with intervals on a circumferential sidewall of the bulb cap 1 at the end close to the threaded segment 23. In this embodiment, there are four connection parts 12 as shown in the drawings. The four connection parts 12 are arranged in the form of a circular shape. The end portion of the threaded segment 23 close to the bulb cap 1 is provided with convex parts 231 extending outward, and the convex parts 231 are arranged in one-to-one correspondence with the connection parts 12 and are filled in the connection parts 12. In this embodiment, when the connection parts 12 are blind holes, the connection parts 12 are arranged on an inner circumferential side of the bulb cap 1; when the connection parts 12 are through holes, an outer contour of the convex parts 231 suits with an outer circumferential side of the bulb cap 1.

Embodiment 2

(17) As shown in FIGS. 4-6, the present embodiment provides a light bulb holder structure which includes a bulb cap 1 and a connector 2. The bulb cap 1 has a cylindrical structure and is formed of a conductive material (for example, copper), and an end of the bulb cap 1 is connectable with a light socket. The connector 2 is made of insulating material (for example, plastics or silicone) and is integrally formed at the end of the bulb cap 1, a center of the connector 2 is provided with a protrusion 21 extending outward from the connector 2 in a direction away from the bulb cap 1, a center of the protrusion 21 is provided with a through hole 22, the through hole 22 is used for inserting a conductive element.

(18) In order to facilitate the installation of the light bulb, in this embodiment, an outer circumferential side of the bulb cap 1 is provided with connection threads 11 matched with the light socket. In this embodiment, the protrusion 21 on the connector 2 can increase the creepage distance of the bulb holder structure to a certain extent. In order to improve the structural strength of the protrusion 21 and avoid damage caused by stress concentration, the protrusion 21 is a truncated cone-shaped structure which allows the stress applied on a side of the protrusion 21 to be released through the arc-shaped peripheral side structure.

(19) In this embodiment, the end of the bulb cap 1 close to the connector 2 is provided with a contracted part 13, more than one connection part 12 is provided, and the connection parts 12 are arranged on the contracted part 13 at intervals. The connection parts 12 are through holes or blind holes. In this embodiment, four connection parts 12 are provided and the four connections parts are all through holes.

(20) In addition, in this embodiment, the end portion of the connector 2 close to the bulb cap 1 penetrates into the contracted part 13 to partially encapsulate the contracted part 13 and completely encapsulate the connection parts 12. With this configuration, the tightness and strength of the connection between the connector 2 and the bulb cap 1 can be greatly improved.

(21) The above descriptions merely involve part of the embodiments of the present disclosure, and are not intended to limit the scope of the present disclosure. Any equivalent device or equivalent process change made based on the contents of the description and drawings of the present disclosure, or same or similar structure directly or indirectly applied to other related technical fields should be considered as falling within the scope of protection of the present disclosure.