Patent Description:
A lamp string is generally composed of a plurality of decorative lamps in parallel or in series. At some occasions of festivals and events, such as at Christmas, Christmas trees are usually adopted and embellished in order to foil a festival atmosphere. Lamp strings are hung on the Christmas trees to enhance the ornamental value. As Christmas lamp strings are mostly used in outdoor environments, the Christmas lamp strings are required to have good water-proof performance. However, structural designs of the majority of lamp strings are unreasonable at present, and the lamp strings have poor water-proof performance.

The document <CIT> provides a water-resistant decorative lighting system having a plurality of lamp assemblies and a wiring harness having two or more insulating conductors and configured to electrically connect the plurality of lamp assemblies. Each lamp assembly of the plurality of lamp assemblies includes a lamp holder, a light source, a waterproofing device, and an outer bulb. The lamp holder comprises a hinged portion connected between a first and second side portions. The lamp holder is configured to move about the hinged portion from an open position to a closed position. Each side portion includes a locking mechanism. The light is configured to fit within the lamp holder when the lamp holder is in the closed position. The outer bulb is detachably attachable to the lamp holder.

The disclosure aims at solving at least one of the technical problems in the existing technology. For this purpose, the disclosure provides a water-proof decorative lamp, which has a good water- proof effect and brings better usage experiences for users.

The disclosure further discloses a lamp string provided with the foregoing water-proof decorative lamps.

The water-proof decorative lamp according to an embodiment of a first aspect of the disclosure includes a light source body, connecting wires and a water-proof component. The water-proof component includes a light-emitting chip and a packaging body. The light-emitting chip is arranged in the packaging body and is provided with two pins extending out of the packaging body. The connecting wires each includes a conductive wire and an insulating layer. A side wall of the conductive wire is covered with the insulating layer. The conductive wire located at one end of the connecting wire protrudes out of the insulating layer to form a connector. The two pins are respectively connected with the connectors. The water-proof component includes an isolating column and a sleeve. The isolating column is disposed between the two pins so as to separate the two pins from each other and the two connectors from each other. One end of the sleeve is arranged around the insulating layer near the connector, and the other end of the sleeve is arranged around the packaging body near the pin to cover the connector and the pin. The isolating column is made of a hot melting material, and the sleeve is made of a heat-shrinkable material.

The water-proof decorative lamp according to the embodiment of the first aspect of the disclosure at least has the following beneficial effects. The isolating column is arranged between the two pins to prevent short circuit of the pins and the connectors. One end of the sleeve is arranged around the insulating layer near the connector, and the other end of the sleeve is arranged around the packaging body near the pin. When being heated, the isolating column is melted to wrap the pin and the connector. At the same time, the sleeve is tightened to tightly wrap the pins, the connectors and the isolating column between the packaging body and the insulating layer. In this way, the external rainwater is difficult to penetrate into contact with the pins and the connectors, so that the water-proof effect is good, and the structure is simple, which can lower the production cost.

According to some embodiments of the disclosure, the water-proof decorative lamp further includes a conductive terminal, a first clip is arranged at one end ofthe conductive terminal, a second clip is arranged at the other end of the conductive terminal, the first clip is roll-pressed on the pin, and the second clip is roll-pressed on the connector.

According to some embodiments of the disclosure, the conductive terminal is provided with a third clip, and the third clip is configured for roll-pressing on the insulating layer near the connector.

According to some embodiments of the disclosure, the water-proof decorative lamp further includes a resistor, the resistor is arranged between the pin and the connector, one end of the resistor is connected to the pin, and the other end of the resistor is connected to the connector.

According to some embodiments of the disclosure, at least one resistor is provided.

According to the invention, the water-proof decorative lamp further includes a lamp holder and a light transmitting cover, the lamp holder is provided with an installing channel with an opening, the light source body is arranged in the installing channel, a notch for passing the connecting wire is arranged on a bottom wall of the installing channel, the light transmitting cover is snap-fitted with the lamp holder, and the light transmitting cover is configured for covering the installing channel.

According to some embodiments ofthe disclosure, an umbrella-shaped shielding part is arranged at one end ofthe cover near the lamp holder for covering a gap between the cover and the lamp holder.

According to the invention, the water-proof decorative lamp further includes a positioning block which is arranged at a bottom portion of the isolating column and is located between the connecting wires, positioning surfaces located in the installing channel are provided at both sides of the lamp holder, and two sides of the positioning block are abutted against the positioning surfaces respectively.

A lamp string according to an embodiment of a second aspect of the disclosure includes a plurality of the water-proof decorative lamps according to the first aspect above and a cable, wherein the cable is electrically connected with the connecting wires and is provided with a power interface, and the power interface is configured for connecting to a driving power.

The lamp string according to the embodiment of the second aspect of the disclosure at least has the following beneficial effects. The water-proof decorative lamps can be connected via a cable in parallel or in series, so that the water-proof decorative lamps are disposed on a long object and are applicable to different occasions. Moreover, the cable itself has a good water-proof performance, so a good water-proof performance can be achieved after the cable is connected with the water-proof decorative lamps.

The additional aspects and advantages of the disclosure will be given in part in the following description, and will become apparent in part from the following description, or will be learned through the practice of the disclosure.

The additional aspects and advantages ofthe disclosure will be more apparent from the following description of the embodiments in conjunction with the accompanying drawings, wherein:.

The embodiments of the disclosure will be described in detail hereinafter. Examples of the embodiments are shown in the accompanying drawings. The same or similar reference numerals throughout the drawings denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only intended to explain the disclosure, but should not be construed as limiting the disclosure.

In the description of the disclosure, it should be understood that the positional descriptions referred to, for example, the directional or positional relationships indicated by up, down, front, rear, left, right, etc., are based on the directional or positional relationships shown in the drawings, and are only for convenience and simplification of description of the disclosure, but not for indicating or implying that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the disclosure.

In the description of the disclosure, "first" and "second" if described are only used to distinguish between technical features but cannot be used to indicate or imply relative importance or implicitly specify a quantity of indicated technical features or implicitly specify a sequential relationship of indicated technical features.

In the description of the disclosure, unless otherwise expressly defined, the terms such as "disposed", "mounted", and "connected" should be understood in a broad sense. For persons of ordinary skill in the art, specific meanings of the terms in the disclosure may be appropriately determined with reference to the specific content in the technical solution.

Referring to <FIG>, a water-proof decorative lamp provided in an embodiment of a first aspect ofthe disclosure includes a light source body <NUM>, including a light-emitting chip <NUM> and a packaging body <NUM>, wherein the light-emitting chip <NUM> is arranged in the packaging body <NUM> and is provided with two pins <NUM> extending out of the packaging body <NUM>; connecting wires <NUM>, each including a conductive wire <NUM> and an insulating layer <NUM>, wherein a side wall of the conductive wire <NUM> is covered with the insulating layer <NUM>, the conductive wire <NUM> located at one end of the connecting wire <NUM> protrudes out of the insulating layer <NUM> to form a connector <NUM>, and the two pins <NUM> are respectively connected with the connectors <NUM>; a water-proof component <NUM>, including an isolating column <NUM> and a sleeve <NUM>, wherein the isolating column <NUM> is disposed between the two pins <NUM> so as to separate the two pins <NUM> and the two connectors <NUM> from each other, one end of the sleeve <NUM> is arranged around the insulating layer <NUM> near the connector <NUM>, and the other end thereof is arranged around the packaging body <NUM> near the pin <NUM> to cover the connector <NUM> and the pin <NUM>, the isolating column <NUM> is made of a hot melting material, and the sleeve <NUM> is made of a heat-shrinkable material.

It should be noted that the isolating column <NUM> is made of the hot melting material, so that the isolating column <NUM> is melted when being heated and is re-solidified when being cooled, and the isolating column <NUM> has insulating property. The sleeve <NUM> is made ofthe heat-shrinkable material, so that the sleeve <NUM> will be shrunk when being heated.

Specifically, in the installing and manufacturing process, the isolating column <NUM> is arranged between the two pins <NUM> to prevent short circuit ofthe pins <NUM> and the connectors. One end of the sleeve <NUM> is arranged around the insulating layer <NUM> near the connector <NUM>, and the other end of the sleeve <NUM> is arranged around the packaging body <NUM> near the pin <NUM>. When being heated, the isolating column <NUM> is melted to wrap the pin <NUM> and the connector <NUM>. At the same time, the sleeve <NUM> is tightened to tightly wrap the pins <NUM>, the connectors and the isolating column <NUM> between the packaging body <NUM> and the insulating layer <NUM>. In this way, the external rainwater is difficult to penetrate into contact with the pins <NUM> and the connectors, so that the water-proof effect is good, and the structure is simple, which can lower the production cost.

It should be understood that, referring to <FIG>, the water-proof decorative lamp further includes a conductive terminal <NUM>, a first clip <NUM> is arranged at one end of the conductive terminal <NUM>, a second clip <NUM> is arranged at the other end of the conductive terminal <NUM>, the first clip <NUM> is roll-pressed on the pin <NUM>, and the second clip <NUM> is roll-pressed on the connector <NUM>. It should be noted that the conductive terminal <NUM> is configured for quickly connecting the pin <NUM> with the connector <NUM>. In addition, the conductive terminal <NUM> clasps the pin <NUM> and the connector <NUM> via the first clip <NUM> and the second clip <NUM>, so as to enhance anti-pull capability.

It should be understood that, referring to <FIG>, the conductive terminal <NUM> is provided with a third clip <NUM>, which is configured for roll-pressing on the insulating layer <NUM> near the connector <NUM>. It should be noted that the insulating layer <NUM> near the connector <NUM> is fixed by the third clip <NUM> in a fastening ring formed by the third clip <NUM> via a frictional force, thereby further enhancing the anti-pull capability and avoiding breakage due to a concentrated force at the connector <NUM> when pulling out. Therefore, the operational reliability is improved.

It should be understood that, referring to <FIG>, the water-proof decorative lamp further includes a resistor <NUM>. The resistor <NUM> is arranged between the pin <NUM> and the connector <NUM>, one end ofthe resistor <NUM> is connected to the pin <NUM>, and the other end of the resistor <NUM> is connected to the connector <NUM>. It should be noted that the resistor <NUM> is connected with the light-emitting chip <NUM> in series to prevent the great change ofthe current in the circuit from burning down the light-emitting chip <NUM>, thereby improving the safety and reliability of operation.

Those of ordinary skills in the art should understand that the resistor <NUM> and the pin <NUM> may be fixed by welding or by the conductive terminal <NUM>. Similarly, the resistor <NUM> and the connector <NUM> may be fixed by welding or by the conductive terminal <NUM>, which is not specifically limited herein.

It should be understood that, referring to <FIG>, at least one resistor <NUM> is provided to ensure the stability of the current in the circuit.

Optionally, one resistor <NUM> maybe arranged and connected to one ofthe pins <NUM>. Alternatively, two resistors <NUM> maybe arranged and connected to the two pins <NUM> respectively, or both connected to one pin <NUM>. It just needs to ensure that there is at least one resistor <NUM> connected to the circuit, and the number and the connecting mode of the resistor <NUM> are not limited specifically.

It should be understood that, referring to <FIG>, the water-proof decorative lamp further includes a lamp holder <NUM> and a light transmitting cover <NUM>, the lamp holder <NUM> is provided with an installing channel <NUM> with an opening, the light source body <NUM> is arranged in the installing channel <NUM>, a notch <NUM> for passing the connecting wire <NUM> is arranged on a bottom wall of the installing channel <NUM>, the light transmitting cover <NUM> is snap-fitted with the lamp holder <NUM>, and the light transmitting cover <NUM> is configured for covering the installing channel <NUM>. It should be noted that the light source body <NUM> is arranged in the installing channel <NUM>. The lamp holder <NUM> and the light transmitting cover <NUM> can not only play a role in protection and prevent the light source body and the water-proof component <NUM> from external mechanical damage to prolong the service life thereof, but also can play a certain water-proof role to improve the water-proof effect. In addition, the light transmitting cover <NUM> and the lamp holder <NUM> are connected in a snap-fit manner, which is beneficial to disassemble.

It should be understood that, referring to <FIG>, an umbrella-shaped shielding part <NUM> is arranged at one end of the cover near the lamp holder <NUM> for covering a gap between the cover and the lamp holder <NUM>, so as to prevent rainwater from penetrating into the installing channel <NUM> through the gap between the cover and the lamp holder <NUM>, further improving the water-proofeffect.

It should be understood that, referring to <FIG>, the water-proof decorative lamp further includes a positioning block <NUM>. The positioning block <NUM> is arranged at a bottom portion of the isolating column <NUM> and is located between the two connecting wires <NUM>, positioning surfaces (not shown in figure) located in the installing channel <NUM> are arranged at both sides of the lamp holder <NUM>, and two sides of the positioning block <NUM> are abutted against the positioning surfaces respectively. It should be noted that an upper end of the isolating column <NUM> is fixed with the light source body <NUM> and a lower end of the isolating column <NUM> is fixed with the positioning block <NUM> after hot melting and cooling, so that the light source body <NUM> is integrated with the positioning block <NUM>. The positioning block <NUM> is installed in the installing channel <NUM> and is fixed under the actions of the positioning surfaces, so that the positioning block <NUM> is not easy to rotate or shake. In this way, the light source body <NUM> is fixed, and works more stably.

Referring to <FIG>, a lamp string according to an embodiment of a second aspect of the disclosure includes the water-proof decorative lamps according to the embodiment of the first aspect ofthe disclosure. As the lamp string includes all technical features of the water-proof decorative lamp in the embodiment of the disclosure, it also has the beneficial effects of all the foregoing embodiments, which are not repeated herein.

It should be understood that, referring to <FIG>, the lamp string further includes a cable <NUM>. The cable <NUM> is electrically connected with the connecting wire <NUM> and is provided with a power interface <NUM>, and the power interface <NUM> is configured for connecting to a driving power. It should be noted that the decorative lamps maybe connected via a cable in parallel or in series according to the need, so that the decorative lamps are disposed on a long object and are applicable to different occasions. During use, the power interface <NUM> is connected with the driving power to light up the decorative lamps connected to the cable <NUM>. The cable <NUM> has a good water-proof performance, so a good water-proof performance can be achieved after the cable <NUM> is connected with the water-proof decorative lamps.

Those of ordinary skills in the art may understand that, with reference to <FIG>, a connector <NUM> is arranged at the tail end of the cable <NUM>, and the power interface <NUM> of the next lamp string may be connected with the connector <NUM> to achieve the effect of extending the length of the lamp string, making the connection between the lamp strings more convenient and improving the usage experiences of the users.

Claim 1:
A water-proof decorative lamp, comprising:
a light source body (<NUM>), comprising a light-emitting chip (<NUM>) and a packaging body (<NUM>), wherein the light-emitting chip (<NUM>) is arranged in the packaging body (<NUM>) and the light-emitting chip (<NUM>) is provided with two pins (<NUM>) extending out of the packaging body (<NUM>);
connecting wires (<NUM>), each comprising a conductive wire (<NUM>) and an insulating layer (<NUM>), wherein a side wall of the conductive wire (<NUM>) is covered with the insulating layer (<NUM>), the conductive wire (<NUM>) located at one end of the connecting wire (<NUM>) protrudes out of the insulating layer (<NUM>) to form a connector (<NUM>), and the two pins (<NUM>) are respectively connected with the connectors (<NUM>); and
a water-proof component (<NUM>), comprising an isolating column (<NUM>) and a sleeve (<NUM>), wherein the isolating column (<NUM>) is disposed between the two pins (<NUM>) so as to separate the two pins (<NUM>) from each other and separate the two connectors (<NUM>) from each other, one end of the sleeve (<NUM>) is arranged around the insulating layer (<NUM>) near the connector (<NUM>), and the other end of the sleeve (<NUM>) is arranged around the packaging body (<NUM>) near the pin (<NUM>), to cover the connector (<NUM>) and the pin (<NUM>), the isolating column (<NUM>) is made of a hot melting material, and the sleeve (<NUM>) is made of a heat-shrinkable material;
wherein the water-proof decorative lamp further comprises a lamp holder (<NUM>) and a light transmitting cover (<NUM>), the lamp holder (<NUM>) is provided with an installing channel (<NUM>) with an opening, the light source body (<NUM>) is arranged in the installing channel (<NUM>), a notch (<NUM>) for passing the connecting wire (<NUM>) is arranged on a bottom wall of the installing channel (<NUM>), the light transmitting cover (<NUM>) is snap- fitted with the lamp holder (<NUM>), and the light transmitting cover (<NUM>) is configured for covering the installing channel (<NUM>);
characterized in that the water-proof decorative lamp further comprises a positioning block (<NUM>), the positioning block (<NUM>) is arranged at a bottom portion of the isolating column (<NUM>) and is located between the connecting wires (<NUM>), positioning surfaces located in the installing channel (<NUM>) are arranged at both sides of the lamp holder (<NUM>), and two sides of the positioning block (<NUM>) are abutted against the positioning surfaces respectively.