WO2009069931A2

WO2009069931A2 - Receptacle connector

Info

Publication number: WO2009069931A2
Application number: PCT/KR2008/006953
Authority: WO
Inventors: Young Ho Yoo
Original assignee: Fawoo Technology Co., Ltd.
Priority date: 2007-11-28
Filing date: 2008-11-26
Publication date: 2009-06-04
Also published as: WO2009069931A3; KR20090055308A; KR100941006B1

Abstract

A receptacle connector is disclosed. The receptacle connector includes a circular connection unit (10) and a receptacle unit (30). The circular connection unit has on a first end thereof a threaded coupling plug part (11), which has a contact (112) and a base (114). The circular connection unit further has an external connection part (13) on a second end thereof. The receptacle unit (30) has on a first end thereof a threaded coupling lamp receiving part (31), into which an LED lamp is inserted. The receptacle unit is coupled to the circular connection unit so as to be rotatable such that the lamp receiving part faces the ground. The receptacle unit further has an internal connection part (33) which is coupled to the external connection part (13). The threaded coupling lamp receiving part is bent from the internal connection part at a predetermined angle.

Description

Description RECEPTACLE CONNECTOR

Technical Field

[1] The present invention relates to a receptacle connector which makes it possible to install a bulb type LED lamp to a threaded coupling type receptacle which is used in an existing streetlight and is oriented in the horizontal direction, so that the LED lamp can face the ground, thus substituting the LED lamp, which can markedly reduce power consumption and have high brightness and noticeably increased lifetime, for an existing lamp of the streetlight. Background Art

[2] Generally, a streetlight which is an outdoor lighting apparatus includes a lamp post 2 which has at least one arm in an inverted "L" shape or a "T" shape. A casing 3 is provided on the end of the arm of the lamp post 2. A threaded coupling type receptacle 3a for lamps is provided in the casing 3 and oriented in the horizontal direction. A bulb type lamp 4, such as a mercury lamp, is mounted to the receptacle 3a (see, FIG. 5).

[3] Meanwhile, LEDs (light emitting diodes) have relatively long lifetime, compared other light sources, and also have high energy efficiency, because power consumption is markedly reduced in such a way that electric energy is directly converted into light energy. Furthermore, the LEDs have high brightness. Therefore, recently, LED lamps which use LEDs as light sources are widely used for not only home use but also outdoor use.

[4] However, such a LED lamp emits light in a straight line. Therefore, in the case where a bulb type LED lamp having a threaded coupling type plug part is mounted to the casing 3 of the existing streetlight in which the receptacle 3a is oriented in the horizontal direction, light emitted from the LED lamp advances in the horizontal direction so that it cannot illuminate downwards.

[5] Due to this problem in that when the LED lamp is used in the existing streetlight, the direction in which the LED lamp emits light is not optimal, it is difficult to use the LED lamp in the existing streetlight, despite the fact that the LED lamp markedly reduces power consumption, that is, has high energy efficiency, and has high brightness and increased lifetime, compared to the existing other lamps, such as mercury lamps. Disclosure of Invention Technical Problem

[6] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a receptacle connector which makes it possible to install a bulb type LED lamp to a threaded coupling type receptacle which is used in an existing streetlight and is oriented in the horizontal direction, such that the LED lamp faces the ground, thus substituting the LED lamp, which can markedly reduce power consumption and have high brightness and noticeably increased lifetime, for an existing lamp of the streetlight.

Technical Solution

[7] In order to accomplish the above object, the present invention provides a receptacle connector electrically connected to a threaded coupling type receptacle for lamps, including: a circular connection unit having a threaded coupling plug part on a first end of a main body thereof, the threaded coupling plug part having a contact and a base, the circular connection unit having an external connection part on a second end thereof; and a receptacle unit having on a first end of a main body thereof a threaded coupling lamp receiving part, into which an LED lamp is inserted, the receptacle unit being coupled to the circular connection unit so as to be rotatable such that the lamp receiving part faces a ground, wherein the receptacle unit further has an internal connection part which is coupled to the external connection part of the circular connection unit, and the threaded coupling lamp receiving part has a lamp receptacle shape and is bent from the internal connection part such that a central axis thereof is bent at a predetermined angle.

Advantageous Effects

[8] A receptacle connector according to the present invention makes it possible to install a bulb type LED lamp to a threaded coupling type receptacle which is used in an existing streetlight and is oriented in the horizontal direction, such that the LED lamp faces the ground. Hence, thanks to the receptacle connector of the present invention, the LED lamp which markedly reduces power consumption and has high brightness and noticeably increased lifetime, can substitute for an existing lamp of the streetlight.

[9] Furthermore, the LED lamp is disposed at a position spaced apart from a casing of the streetlight, so that heat generated from the LED lamp can be smoothly dissipated by a natural draft. Brief Description of the Drawings

[10] FIG. 1 is an exploded perspective view of an embodiment of the present invention;

[11] FIG. 2 is an assembled perspective view of FIG. 1;

[12] FIG. 3 is a sectional view of FIG. 2;

[13] FIG. 4 is a sectional view of the embodiment of the present invention; and

[14] FIG. 5 is a view showing the construction of a conventional technique.

[15] *Description of the elements in the drawings* [16] 1: receptacle connector 10: circular connection unit

[17] 11: threaded coupling plug part 13: external connection part

[18] 15,35: lead wire 30: receptacle unit

[19] 31: lamp receiving part 33: internal connection part

[20] 50: set screw 60: packing ring

[21] 2: lamp post 3: casing

[22] 5: LED lamp 5a: dissipation unit

[23] 5b: LED

Best Mode for Carrying Out the Invention

[24] Hereinafter, a receptacle connector according to an embodiment of the present invention will be described in detail with reference to the attached drawings.

[25] FIG. 1 is an exploded perspective view of the embodiment of the present invention.

FIG. 2 is an assembled perspective view of FIG. 1. FIG. 3 is a sectional view of FIG. 2. FIG. 4 is a view of the use of FIG. 3.

[26] As shown in FIGS. 1 through 4, a receptacle connector 1 according to the embodiment of the present invention is electrically connected to a threaded coupling type receptacle for a lamp and includes a circular connection unit 10 and a receptacle unit 30. The circular connection unit 10 includes a threaded coupling plug part 11 which has a contact 112 and a base 114 on a first end of a main body thereof in a shape similar to a typical lamp and has an external connection part 13 on a second end thereof. The receptacle unit 30 includes on a first end of a main body thereof a threaded coupling lamp receiving part 31, into which an LED lamp 5 is inserted. The receptacle unit 30 is coupled to the circular connection unit 10 so as to be rotatable such that the lamp receiving part 31 faces the ground. The receptacle unit 30 further includes an internal connection part 33, which is coupled to the external connection part 13 of the circular connection unit 10. The threaded coupling lamp receiving part 31 has a shape similar to a typical receptacle for lamps and is bent from the internal connection part 33 such that it has a shape in which a central axis 32 thereof is bent at a predetermined angle and.

[27] Here, the lamp receiving part 31 which has a shape similar to a typical receptacle for lamps includes a contact terminal 312 and an internal threaded portion 314 which electrically correspond to a threaded coupling plug part of the LED lamp 5.

[28] Preferably, the circular connection unit 10 has a hollow pipe shape, and the receptacle unit 30 has an elbow pipe shape.

[29] The external connection part 13 of the circular connection unit 10 is stepped on an outer surface thereof. The internal connection part 33 of the receptacle unit 30 is stepped on an inner surface thereof to correspond to the outer surface of the external connection part 13, such that the internal connection part 33 can be coupled to the external connection part 13. Preferably, a plurality of set screw holes 332 is formed through the internal connection part 33, and an annular set screw fitting depression 132 is formed in the external connection part 13 at a position corresponding to the set screw holes 332.

[30] Furthermore, the external connection part 13 of the circular connection unit 10 is fastened to the internal connection part 33 of the receptacle unit 30 after the orientation of the receptacle unit 30 with respect to the circular connection unit 10 is adjusted by rotating the receptacle unit 30 relative to the circular connection unit 10.

[31] In addition, it is preferable that the receptacle unit 30 be configured such that the lamp receiving part 31 is bent from the internal connection part 33 at a right angle.

[32] As shown in FIG. 4, preferably, the receptacle connector of the present invention further includes a waterproof cover 70 which covers the circular connection unit 10 and the receptacle unit 30. The waterproof cover 70 extends a predetermined length such that it covers a portion of the LED lamp 5 that is coupled to the receptacle unit 30.

[33] The waterproof cover 70 is made of flexible silicone and has a tubular shape.

Preferably, a through hole 71 for insertion of a set screw is formed in the waterproof cover 70.

[34] Furthermore, lead wires 15 and 35, which are electrically connected to each other, respectively extend from the circular connection unit 10 and the receptacle unit 30 through the spaces defined in the main bodies of the circular connection unit 10 and the receptacle unit 30. Preferably, a connection jack 151 is provided on the end of each of the lead wires 15 and 35.

[35] In the drawings, the reference numeral 5a denotes a dissipation unit of the LED lamp, and 5b denotes LEDs.

[36] The installation and operation of the receptacle connector 1 according to the present invention having the above-mentioned construction will be described herein below.

[37] In the present invention, the circular connection unit 10 includes the threaded coupling plug part 11, which is electrically connected to a threaded coupling type receptacle 3a for lamps and has a shape similar to a typical lamp. The receptacle unit 30 is coupled to the circular connection unit 10 such that the orientation thereof with respect to the circular connection unit 10 is adjustable. Thus, for example, in the case where the receptacle connector of the present invention is used in a streetlight, the existing threaded coupling type receptacle 3a can be still used, and the receptacle connector makes the bulb type LED lamp 5 emit light downwards.

[38] The circular connection unit 10 and the receptacle unit 30 are provided on an installation site in the state of having been coupled to each other. In the installation site, the threaded coupling plug part 11 of the circular connection unit 10 is threaded into the threaded coupling type receptacle 3a, which is provided in a casing of the streetlight.

[39] Here, the orientation of the receptacle unit 30 with respect to the circular connection unit 10 is determined depending on the threaded coupling conditions therebetween. Therefore, if the orientation of the receptacle unit 30 is incorrect, the set screw 50 is loosened and the receptacle unit 30 is rotated such that the lamp receiving part 31 is oriented downwards, and, thereafter, the set screw 50 is tightened again.

[40] As such, because the lamp receiving part 31 is oriented downwards, the LED lamp 5 that is mounted to the lamp receiving part 31 can emit light downwards and thus reliably function as a streetlight.

[41] Furthermore, in the present invention, the LED lamp is disposed at a position spaced apart from the casing of the streetlight, so that heat generated from the LED lamp can be smoothly dissipated by a natural draft.

[42] In addition, because the receptacle connector is covered with the waterproof cover 70 made of flexible silicone, rain or snow water can be reliably prevented from permeating junctions between the components of the receptacle connector or the plug part of the LED lamp.

[43] As described above, the receptacle connector according to the present invention makes it possible to install a bulb type LED lamp to the existing threaded coupling type receptacle 3a which is oriented in the horizontal direction, such that the LED lamp faces the ground. Therefore, thanks to the receptacle connector of the present invention, the LED lamp which markedly reduces power consumption and has high brightness and noticeably increased lifetime, can substitute for an existing lamp of the streetlight.

[44] Although the preferred embodiment of the present invention has been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

[1] A receptacle connector electrically connected to a threaded coupling type receptacle for lamps, comprising: a circular connection unit (10) having a threaded coupling plug part (11) on a first end of a main body thereof, the threaded coupling plug part (11) having a contact (112) and a base (114), the circular connection unit (10) having an external connection part (13) on a second end thereof; and a receptacle unit (30) having on a first end of a main body thereof a threaded coupling lamp receiving part (31), into which an LED lamp is inserted, the receptacle unit (30) being coupled to the circular connection unit (10) so as to be rotatable such that the lamp receiving part (31) faces a ground, wherein the receptacle unit (30) further has an internal connection part (33) which is coupled to the external connection part (13) of the circular connection unit (10), and the threaded coupling lamp receiving part (31) has a lamp receptacle shape and is bent from the internal connection part (33) such that a central axis (32) thereof is bent at a predetermined angle.

[2] The receptacle connector according to claim 1, wherein the circular connection unit (10) has a hollow pipe shape, and the receptacle unit (30) has an elbow pipe shape.

[3] The receptacle connector according to claim 1 or 2, wherein the external connection part (13) of the circular connection unit (10) is stepped on an outer surface thereof, and the internal connection part (33) of the receptacle unit (30) is stepped on an inner surface thereof to correspond to the outer surface of the external connection part (13), and a plurality of set screw holes (332) is formed through the internal connection part (33), and an annular set screw fitting depression (132) is formed in the external connection part (13) at a position corresponding to the set screw holes (332).

[4] The receptacle connector according to claim 1, wherein lead wires (15) and (35) are respectively extracted from the circular connection unit (10) and the receptacle unit (30) through spaces defined in the main bodies thereof to electrically connect the circular connection unit (10) and the receptacle unit (30) to each other, wherein a connection jack (151) is provided on an end of each of the lead wires (15) and (35).