EP3324101A1

EP3324101A1 - Led candle string light

Info

Publication number: EP3324101A1
Application number: EP17169760.0A
Authority: EP
Inventors: Kuo-Hao Huang
Original assignee: Heshan Jianhao Lighting Industrial Co Ltd
Current assignee: Heshan Jianhao Lighting Industrial Co Ltd
Priority date: 2016-11-22
Filing date: 2017-05-05
Publication date: 2018-05-23
Also published as: CN106499986A; FI11808U1; SE1750642A1; DK201700056U3

Abstract

An LED candle string light comprises a light cover (1), a light holder (2), and an LED light head (3), wherein the light holder (2) is tube-shaped and provided with at least one first annular bosses (21) on inner wall of the upper end thereof, the light cover (1) is provided with a tubular connecting base (11) at the lower portion thereof, and the tubular connecting base (11) is provided on the outer wall thereof with a first annular groove (12) fitted tightly with the first annular boss (21). The light further comprises wires soldered to the tail of the LED light head (3) which is installed in the internal cavity of the light cover, and a bottom plug (5) installed at the bottom of the light holder (2). The bottom plug (5) is provided with a limiting pillar (6) located between the two wires at the upper end thereof. The LED light head (3) is mounted on the top of the limiting pillar (6).

Description

TECHNICAL FIELD

The present invention relates to an LED light, and in particular to an LED candle string light.

BACKGROUND OF THE INVENTION

A conventional candle tubular light is produced in a structure in which contact terminals are in contact with both poles of a light head. However, such a structure still depends largely on manual work, so that the efficiency of production is low. Moreover, a copper cap bulb used in the candle tubular light is not only high in cost and complex in process, but also causes a lot of potential quality problems and waste problems due to complex assembly and production processes and inconvenience in the repair of defective products. With the rapid development of the automated soldering process, it is becoming more and more difficult for such a product with low production efficiency and high cost to gain popularity in the consumer market with increasingly fierce competition.

SUMMARY OF THE INVENTION

In order to overcome the defects of the prior art, the invention provides a novel LED candle string light which is easy to be mounted and characterized in higher structural stability and automated productivity and low costs.
The technical solution adopted by the invention to solve the technical problem is as follows.
An LED candle string light comprises a light cover, a light holder and a LED light head. The light cover has an internal cavity, and is provided with a tubular connecting base which is formed in a lower portion thereof and has an outer wall. The light cover is further provided with a first annular groove formed on the outer wall of the tubular connecting base. The light holder is in a tubular shape having an inner wall and a bottom, and is provided with one or more first annular bosses in an upper end of the inner wall thereof. The LED light head has a tail. The light further comprises wires a bottom plug, and a limiting pillar. The wires are soldered to the tail of the LED light head. The bottom plug has an upper end, and is mounted at the bottom of the light holder. The limiting pillar has a top, and is arranged at the upper end of the bottom plug and located between two wires. The first annular groove of the light cover is tightly engaged with the first annular boss of the light holder. The LED light head is mounted on the top of the limiting pillar, and located in the internal cavity of the light cover through the light holder from bottom to top.
As an improvement to the above-mentioned technical solution, the light holder is provided, at the bottom of the inner wall thereof, with at least one second annular boss, and the bottom plug is provided with a second annular groove which is fitted tightly with the second annular boss.
Further, the bottom plug, on both sides thereof, and the limit pillar, in an upper portion thereof, are provided with wire grooves.
Further, the LED light head comprises an LED bulb having two polar pins soldered with the wires, an insulating pillar arranged between the two polar pins, and an insulating heat-shrinkable tube wrapped on the polar pins and the insulating pillar.
Further, the LED light head comprises at least one LED bulb.
Further, the light further comprises a waterproof ring arranged at the joint between the light cover and the light holder, the upper end of the outer wall of the waterproof ring is formed as a conical surface, and the lower end of the waterproof ring is formed as a cylindrical surface.
Further, the waterproof ring is provided with a third annular groove on the inner wall thereof, and the light holder at the upper end of the outer wall thereof with a third annular boss which is fitted tightly with the third annular groove.
Further, the light holder is provided at the lower end of the outer wall thereof with a conical surface, and the side edge of the bottom plug does not go beyond the range of the bottom orifice of the light holder.
The invention has the following advantages that the connection between the LED bulb and the wires in the present invention is of a soldered structure, as the current automatic soldering technology is constantly developing and becoming mature, the electrical connection reliability and greatly increased production efficiency of the soldered structure allow the production of the product to be carried out rapidly and reliably. Moreover, since the light holder and the light cover are connected through the first annular boss and the first annular groove, the shaped light cover is simpler to use, a copper cap bulb can be produced with low cost, and various potential quality problems caused by complex production processes, such as mechanisms and cap mounting, as well as material waste caused by the repair of defective products do not occur. Furthermore, the LED light head can be positioned conveniently and accurately by the bottom plug and the limit pillar arranged on the top thereof, so that the overall light-emitting effect is guaranteed.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is further described below with reference to embodiments and drawings, in which:

Fig. 1 is an exploded view of the LED candle string light according to the invention;
Fig. 2 is a cross-sectional view of the LED candle string light exploded according to the invention;
Fig. 3 is a cross-sectional view of the LED candle string light assembled according to the invention;
Fig. 4 is a schematic view of the LED candle string light mounted indoor according to the invention; and
Fig. 5 is a schematic view of the LED candle string light mounted outdoor according to the invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

As shown in Figs. 1-3, an LED candle string light disclosed in the invention comprises a light cover 1, a light holder 2, and a light head 3. The light cover 1, having an internal cavity, is provided with a tubular connecting base 11 which is formed in a lower portion thereof and has an outer wall, and a first annular groove 12 which is formed on the outer wall of the tubular connecting base 11. The light holder 2, is of a tubular structure having an inner wall and a bottom, and is provided with one or more first annular bosses 21 in an upper end of the inner wall thereof. The LED light head 3 has a tail. The LED candle string light of the invention further comprises wires 4, a bottom plug 5 and a limiting pillar 6. The wires 4 are soldered to the tail of the LED light head 3. The bottom plug 5, having an upper end, is mounted at the bottom of the light holder 2. The limiting pillar 6, having a top, are arranged at the upper end of the bottom plug 5 and located between two wires 4. The light cover 1 is tightly engaged with the first annular boss 21, the LED light head 3 is mounted on the top of the limiting pillar 6 and in the internal cavity of the light cover 1. In assembling, the LED light head 3 goes into the internal cavity of the light cover 1, passing through the light holder 2 from bottom to top. The connection between the LED bulb 3 and the wires 4 in the invention is of a soldered structure, as recently automatic soldering technology is constantly developed and becomes mature, the electrical connection reliability and greatly increased production efficiency of the soldered structure allow the production of the product to be carried out rapidly and reliably. Moreover, according to the invention, since the light holder 2 and the light cover 1 are connected through the first annular boss 21 and the first annular groove 12, the shaped light cover is simple to use, the copper cap bulbs of high production cost are no longer needed, and various potential quality problems caused by complex production processes as well as material waste caused by the repair of defective products are eliminated. Furthermore, the LED light head 3 can be positioned conveniently and accurately by the bottom plug 5 and the limit pillar 6 arranged on the top thereof, so that the overall light-emitting effect is guaranteed.
The light holder 2 is provided with one or more second annular bosses 22 on the inner wall of the bottom thereof, and the bottom plug 5 is provided with a second annular groove 51 which is fitted tightly with the second annular boss 22. Such a structure ensures that the light holder 2 and the wires 4 mounted therein can be fitted tightly, preventing the solder joints from being subjected to tensile force when the wires 4 are pulled, and therefore to satisfying the requirement of safety regulation on fixation and tensile force.
For convenience in securing the wires 4, the bottom plug 5 and of the upper portion of the limit pillar 6 are provided with wire grooves, at both sides thereof, respectively.
The LED light head 3 further comprises an insulating pillar 32 and an insulating heat-shrinkable bush 33. In assembling, after the wires 4 are soldered to an LED bulb 31, the insulating pillar 32 is inserted between two polar pins, and the insulating heat-shrinkable bush 33 are applied to wrap the insulating pillar 32 and the polar pins, whereby the LED light head 3 is formed. According to the invention, while the insulating pillar 32 is used to isolate the two polar pins of the LED bulb 31 to prevent short circuit, the insulating heat-shrinkable bush 33 is used to wrap all the electrified parts, such that the resulting product has higher safety performance while being produced at high efficiency. The LED light head 3 normally has only one LED bulb 31, but, in order to make the string light have enough brightness, the LED light head 3 can comprise multiple LED bulbs 31.
As shown in Fig. 4 and 5, the products according to the invention can be of two types: indoor and outdoor. In order to facilitate outdoor use and to prevent rainwater from getting into the light body from the position of connection between the light cover 1 and the light holder 2, in an outdoor product, the light further comprises a waterproof ring 7 arranged at the joint between the light cover 1 and the light holder 2. The waterproof ring 7 has a conical surface on the upper end of the outer wall thereof, and a cylindrical surface at the lower end thereof.
The waterproof ring 7 is provided with a third annular groove 71 on the inner wall thereof, and the light holder 2 is provided, on the outer wall of its upper end, with a third annular boss 23 which is fitted tightly with the third annular groove 71. Such an arrangement is simple, easy for installation, more reliable, and has higher outdoor protective performance.
For convenience in outdoor use, and preventing rainwater from getting into the light body from the installation position of the light holder 2 and the bottom plug 5, in a product of the invention specified for outdoor use, the light holder 2 is provided with a conical surface 24 formed at a lower end of an outer wall thereof, and the side edge of the bottom plug 5 does not go beyond the range of the bottom orifice of the light holder 2.
What is described above is merely preferred embodiments of the present invention, but the present invention is not limited thereto. All those which achieve the technical effect of the present invention with the same or any similar means shall fall within the protection scope of the invention.

Claims

An LED candle string light, comprising:
a light cover (1) having an internal cavity, the light cover (1) being provided with a tubular connecting base (11) formed in a lower portion thereof and having an outer wall, and a first annular groove (12) formed on the outer wall of the tubular connecting base (11);

a light holder (2), in a tubular shape, having an inner wall and a bottom, the light holder (2) being provided with one or more first annular bosses (21) at an upper end of the inner wall thereof;

an LED light head (3), having a tail;

wires (4), soldered to the tail of the LED light head (3);

a bottom plug (5) having an upper end, mounted at the bottom of the light holder (2); and

a limiting pillar (6) having a top, arranged at the upper end of the bottom plug (5) and located between two wires (4); and

wherein the first annular groove (12) of the light cover (1) is tightly engaged with the first annular boss (21) of the light holder (2), the LED light head (3) is mounted on the top of the limiting pillar (6), and located in the internal cavity of the light cover (1) through the light holder (2) from bottom to top.
The LED candle string light according to claim 1, wherein the light holder (2) is provided, at the bottom of the inner wall thereof, with at least one second annular boss (22), and the bottom plug (5) is provided with a second annular groove (51) which is fitted tightly with the second annular boss (22).
The LED candle string light according to either claim 1 or claim 2, wherein the bottom plug (5), on both sides thereof, and the limit pillar (6), in an upper portion thereof, are provided with wire grooves.
The LED candle string light according to any one of claims 1 to 3, wherein the LED light head (3) comprises an LED bulb (31) having two polar pins soldered with the wires (4), an insulating pillar (32) arranged between the two polar pins, and an insulating heat-shrinkable tube (33) wrapped on the polar pins and the insulating pillar (32).
The LED candle string light according to claim 4, wherein the LED light head (3) comprises at least one LED bulb (31).
The LED candle string light according to any one of claims 1 to 5, further comprising a waterproof ring (7) arranged at the joint between the light cover (1) and the light holder (2), the upper end of the outer wall of the waterproof ring (7) is formed as a conical surface, and the lower end of the waterproof ring (7) is formed as a cylindrical surface.
The LED candle string light according to claim 6, wherein the waterproof ring (7) is provided with a third annular groove (71) on the inner wall thereof, and the light holder (2) at the upper end of the outer wall thereof with a third annular boss (23) which is fitted tightly with the third annular groove (71).
The LED candle string light according to any one of claims 1 to 7, wherein the light holder (2) is provided at the lower end of the outer wall thereof with a conical surface (24), and the side edge of the bottom plug (5) does not go beyond the range of the bottom orifice of the light holder (2).