Patent Description:
In an existing landscape decorative lamp, a pin-package light-emitting diode (LED) is usually used as a light source device. A lead wire frame is used as a pin in the pin-package LED. Such a packaging structure is the earliest one developed successfully and put on the market. The packaging structure has many varieties and relatively high technological maturity, and is the most convenient and economical solution in the lamp industry at present. However, in most commercially available decorative lamps using a pin-package LED, the pin-package LED is directly soldered to a power cable. Due to the poor anti-pull capability of solder, in the outdoor environment with strong wind force or when children often pull and play with it, the connection mode of soldering is easy to cause the pin-package LED to fall off from the power cable, exposing a conductive part of the power cable to the air, which is easy to cause the danger of electric shock and pose a threat to personal safety. In addition, pseudo soldering is likely to occur when the pin-package LED is connected by solder tin. As a result, the pin-package LED emits light abnormally, adversely affecting the appearance of a decorative lamp.

Patent literature <CIT> discloses a socket, particularly for making electrical festoons, including a substantially cylindrical outer sheath open at its two ends, a substantially cylindrical core having at least two notches for receiving two electrical connectors, and a lampholder, the said core and the said connectors being arranged inside the said outer sheath, each connector having, at one end, means for fastening it to a conductor wire and, at the other end, means for connecting it electrically to the lampholder, wherein the said notches are made in the outer surface of the core, and each connector possesses means for locking it relative to the core, which interact with a specific notch made in the outer surface of the core.

Patent literature <CIT> discloses a jacketed light emitting diode assembly, which includes a light emitting diode including a set of positive and negative contacts, and a lens body containing a semiconductor chip and end portions of the contacts. An electrical wire set of first and second electrical wires are connected to the positive contact and the negative contact, respectively. A light transmissive cover receives the lens body, and has an opening through which at least one of the contact set and the electrical wire set passes. An integrally molded plastic jacket at the opening of the light transmissive cover provides a seal at the opening against moisture and airborne contaminants. A waterproof light string including one or more of the jacketed light emitting diode assemblies is also provided, as are related methods.

While the above publications may achieve their intended purpose, there is still a need for a new and improved lamp.

The present disclosure aims at solving one of the technical problems in the related art. In view of this, the present disclosure provides an anti-pull-apart decorative lamp and an anti-pull-apart lamp string, which have good anti-pull-apart performance and can prevent the occurrence of pseudo soldering.

According to an embodiment of a first aspect of the present disclosure, an anti-pull-apart decorative lamp is provided as defined in appended claim <NUM>.

The anti-pull-apart decorative lamp according to the embodiment of the first aspect of the present disclosure at least has the following beneficial effects:
The pin of the lead wire frame is provided on the first clip, and the first clip surrounds the pin and is in tight contact with the pin, so that a frictional force between the first clip and the pin is used to fasten the lead wire frame at one end of the conductive terminal. The wiring connector of the connecting wire is provided on the second clip, and the second clip surrounds the wiring connector and is in tight contact with the wiring connector, so that a frictional force between the second clip and the wiring connector is used to fasten the connecting wire at the other end of the conductive terminal. The conducting wire of the connecting wire is electrically connected to the light-emitting chip of the light source by the conductive terminal. The surfaces of the wiring connector, the pin, and the conductive terminal are covered with the insulating plastic, which can prevent the pin from short-circuiting, prevent the wiring connector, the conductive terminal, and the pin from electric leakage, and can reinforce the connection between the conductive terminal and the pin as well as the wiring connector. The conductive terminal holds the pin and the wiring connector tightly by the first clip and the second clip, so that the anti-pull capability can be improved. In addition, the wiring connector can be electrically connected to the pin without soldering, thereby effectively avoiding pseudo soldering. The anti-pull-apart decorative lamp according to the embodiment of the first aspect of the present disclosure has a simple structure and low manufacturing cost.

In some embodiments of the present disclosure, the conductive terminal is provided with a connecting sheet having one end connected to the first clip and the other end connected to the second clip, and the wiring connector is electrically connected to the pin indirectly by the connecting sheet.

In some embodiments of the present disclosure, a portion of the first clip connected to the connecting sheet is arc-shaped, and two sides of the first clip perpendicular to an axial direction of the conductive terminal bend toward a same surface of the first clip.

In some embodiments of the present disclosure, a portion of the second clip connected to the connecting sheet is arc-shaped, and two sides of the second clip perpendicular to the axial direction of the conductive terminal bend toward a same surface of the second clip.

In some embodiments of the present disclosure, the conductive terminal further includes a third clip, the third clip is connected to an end of the second clip away from the connecting sheet, the second clip is configured for being roll-pressed against the conducting wire near the wiring connector, and the third clip is configured for being roll-pressed against the insulating layer near the wiring connector.

In some embodiments of the present disclosure, a portion of the third clip connected to the second clip is arc-shaped, and two sides of the third clip perpendicular to the axial direction of the conductive terminal bend toward a same surface of the third clip.

In some embodiments of the present disclosure, a surface of the insulating plastic away from the conductive terminal is wrapped with a plastic layer, and the plastic layer is configured for encapsulating the insulating plastic inside the plastic layer.

In some embodiments of the present disclosure, the conductive terminal is made of copper or a copper-containing alloy.

An anti-pull-apart lamp string according to an embodiment of a second aspect of the present disclosure is provided including a plurality of anti-pull-apart decorative lamps in the embodiment of the first aspect and a cable, the cable being electrically connected to the connecting wire, the cable being provided with a power interface, and the power interface being configured for connecting a drive power supply.

The anti-pull-apart lamp string according to the embodiment of the second aspect of the present disclosure at least has the following beneficial effects:
The cable is provided with the connecting wire which is connected to the pin of the light source by the conductive terminal, so that the light source has a good anti-pull capability, and at the same time pseudo soldering can be avoided. The surfaces of the pin of the light source, the conductive terminal, and the wiring connector of the connecting wire are covered with the insulating plastic, which prevent the pin from short-circuiting, prevent electric leakage, and improve the anti-pull capability. The anti-pull-apart lamp string of the present disclosure can be arranged in occasions with large wind force or a large number of children. Because the anti-pull-apart lamp string of the present disclosure has good anti-pull performance, the light source can be prevented from being pulled off to avoid electric leakage at the cable. The power interface of the cable can be connected to a drive power supply with a voltage higher than the human body safety voltage.

Advantages and additional aspects of the present disclosure are partially provided in the following description and partially become apparent from the following description or understood through the practice of the present disclosure.

The foregoing and/or additional aspects and advantages of the present disclosure will be apparent and easily comprehensible from the description of the embodiments with reference to the accompanying drawings, in which:.

The embodiments of the present disclosure are described below in detail. Examples of the embodiments are shown in the accompanying drawings. The same or similar numerals represent the same or similar elements or elements having the same or similar functions throughout the specification. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present disclosure but should not be construed as a limitation to the present disclosure.

In the description of the present disclosure, "first" and "second" described herein are used only for distinguishing the technical feature, but are not intended to indicate or imply relative importance or implicitly specify a quantity of indicated technical features or implicitly specify an order of indicated technical features.

In the description of the present 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 present disclosure may be appropriately determined with reference to the specific content in the technical solution.

An anti-pull-apart decorative lamp according to an embodiment of a first aspect of the present disclosure is described below in detail with reference to the accompanying drawings.

Referring to <FIG> and <FIG>, according to an embodiment of the present disclosure, an anti-pull-apart decorative lamp is provided, including: a light source <NUM>, a connecting wire <NUM>, a conductive terminal <NUM>, and an insulating plastic <NUM>. The light source <NUM> includes a light-emitting chip <NUM> and a lead wire frame <NUM>. The lead wire frame <NUM> includes a first pin <NUM> and a second pin <NUM>. An end of the first pin <NUM> is electrically connected to a positive electrode of the light-emitting chip <NUM>. An end of the second pin <NUM> is electrically connected to a negative electrode of the light-emitting chip <NUM>. The light-emitting chip <NUM> and an end of the lead wire frame <NUM> connected to the light-emitting chip <NUM> are encapsulated inside a transparent epoxy resin lampshade <NUM>. In this embodiment, there are two conductive terminals <NUM>. Two ends of the conductive terminal <NUM> are provided with a first clip <NUM> and a second clip <NUM> respectively. An end of each of the first pin <NUM> and the second pin <NUM> away from the lampshade <NUM> is provided on the first clip <NUM> of the respective conductive terminal <NUM>. The first clip <NUM> tightly surrounds a respective one of the first pin <NUM> and the second pin <NUM> by taking an axial direction of the respective one of the first pin <NUM> and the second pin <NUM> as the axis. The first clip <NUM> fastens, by using a pressure and a frictional force, the respective one of the first pin <NUM> and the second pin <NUM> in a fastening ring formed by the first clip <NUM>. The connecting wire <NUM> includes a conducting wire <NUM> and an insulating layer <NUM>. The insulating layer <NUM> covers a side wall of the conducting wire <NUM>. An end of the connecting wire <NUM> is provided with a wiring connector <NUM>. The conducting wire <NUM> at the wiring connector <NUM> protrudes from the insulating layer <NUM>. There are two connecting wires <NUM> in this embodiment, which are connected to a positive electrode and a negative electrode of a drive power supply. The wiring connector <NUM> is provided in the second clip <NUM> of the conductive terminal <NUM>. The second clip <NUM> tightly surrounds the wiring connector <NUM> by taking an axial direction of the wiring connector <NUM> as the axis. The second clip <NUM> fastens, by using a frictional force, the wiring connector <NUM> in a fastening ring formed by the second clip <NUM>. To prevent the first pin <NUM> and the second pin <NUM> from short-circuiting and prevent a portion of the lead wire frame <NUM> outside the lampshade <NUM>, the conductive terminal <NUM>, and the wiring connector <NUM> from discharging electricity to the outside, the surfaces of the portion of the lead wire frame <NUM> outside the lampshade <NUM>, the conductive terminal <NUM>, and the wiring connector <NUM> are covered with the insulating plastic <NUM>. During actual production, the insulating plastic <NUM> may be injection-molded around the first pin <NUM>, the second pin <NUM>, the conductive terminal <NUM>, and the wiring connector <NUM> in an injection molding manner. Alternatively, the insulating plastic <NUM> may be sleeved over the surfaces near the first pin <NUM>, the second pin <NUM>, the conductive terminal <NUM>, and the wiring connector <NUM>.

In addition, the conductive terminal <NUM> is provided with a connecting sheet <NUM> at a middle of the conductive terminal <NUM>, with one end connected to the first clip <NUM> and the other end connected to the second clip <NUM>. The first pin <NUM> and the second pin <NUM> are tightly clamped by the first clip <NUM> respectively. The wiring connector <NUM> of the connecting wire <NUM> is tightly clamped by the second clip <NUM>. The wiring connector <NUM> is indirectly electrically connected with a respective one of the first pin <NUM> and the second pin <NUM> by the connecting sheet <NUM>. The first clip <NUM> and the second clip <NUM> are independent of each other and do not affect each other. When a light source fails and needs to be replaced, it is only necessary to release the first clip <NUM> without affecting the connection between the second clip <NUM> and the wiring connector <NUM>, which is convenient for maintenance and mass production. The first clip <NUM> and the second clip <NUM> are connected by the sheet-form connecting sheet <NUM>, so that the resistance between the first clip <NUM> and the second clip <NUM> can be reduced, and the impact of the conductive terminal <NUM> on the brightness of the light source <NUM> can be reduced.

Further, the conductive terminal <NUM> is made of pure copper or a copper alloy, and the impedance between the light source <NUM> and the connecting wire <NUM> is reduced by the good conductivity and ductility of copper, so that the mechanical strength according to this embodiment is enhanced.

In the anti-pull-apart decorative lamp in this embodiment, the first pin <NUM> and the second pin <NUM> of the lead wire frame <NUM> and the wiring connector <NUM> of the connecting wire <NUM> are surrounded and tightly clamped by the first clip <NUM> and the second clip <NUM> of the conductive terminal <NUM> respectively, so that it is difficult to pull apart the light source <NUM> from the conductive terminal <NUM>. Thus, the anti-pull-apart decorative lamp in this embodiment has good anti-pull capability and can avoid potential safety hazards caused by the connecting wire <NUM> being exposed to the air. It is not necessary to solder the light source <NUM> and the connecting wire <NUM> in this embodiment, so that the problem of pseudo soldering caused by soldering is avoided, and abnormal light emission caused by pseudo soldering can be avoided. The surfaces of the portion of the lead wire frame <NUM> outside the lampshade <NUM>, the conductive terminal <NUM>, and the wiring connector <NUM> are covered with the insulating plastic <NUM>, so that the anti-pull capability in this embodiment can be further improved, to prevent the first pin <NUM> and the second pin <NUM> from being short-circuited due to compression. In addition, these parts can be prevented from discharging electricity to the outside to cause safety hazards. In the anti-pull-apart decorative lamp in this embodiment, the light source <NUM> may be solderlessly connected to the connecting wire <NUM>, so that no toxic gas is generated during production, thereby reducing pollution to the environment.

Referring to <FIG> and <FIG>, according to another embodiment of the present disclosure, an anti-pull-apart decorative lamp is provided. Based on the foregoing embodiment, an end of the second clip <NUM> away from the connecting sheet <NUM> is connected to a third clip <NUM>. The second clip <NUM> and the third clip <NUM> are configured for tightly clamping the conducting wire <NUM> and the insulating layer <NUM> near the wiring connector <NUM>, respectively. Specifically, the second clip <NUM> and the third clip <NUM> tightly surround the wiring connector <NUM> by taking an axial direction of the wiring connector <NUM> as the axis. The second clip <NUM> fastens, by using a frictional force, the conducting wire <NUM> near the wiring connector <NUM> in a fastening ring formed by the second clip <NUM>. The third clip <NUM> fastens, by using a frictional force, the insulating layer <NUM> near the wiring connector <NUM> in a fastening ring formed by the third clip <NUM>. Since the insulating layer <NUM> covers the side wall of the conducting wire <NUM>, the insulating layer <NUM> has a diameter greater than that of the conducting wire <NUM>. The second clip <NUM> and the third clip <NUM> roll-press and tightly clamp the conducting wire <NUM> and the insulating layer <NUM> at the wiring connector <NUM>, so that contact areas between the second clip <NUM> and the conducting wire <NUM> and between the third clip <NUM> and the insulating layer <NUM> can be increased, to provide sufficient contact between the second clip <NUM> and the conducting wire <NUM> and between the third clip <NUM> and the insulating layer <NUM>, thus preventing the insulating layer <NUM> from affecting the contact between the second clip <NUM> and the conducting wire <NUM>, increasing the frictional force between the second clip <NUM> and the conducting wire <NUM>, and improving the anti-pull capability of the anti-pull-apart decorative lamp in this embodiment.

Further, a portion of each of the first clip <NUM> and the second clip <NUM> connected to the connecting sheet <NUM> is arc-shaped. A portion of the third clip <NUM> connected to the second clip <NUM> is arc-shaped. Two sides of each of the first clip <NUM>, the second clip <NUM>, and the third clip <NUM> perpendicular to an axial direction of the conductive terminal <NUM> bend toward a same surface of the first clip <NUM>, the second clip <NUM>, and the third clip <NUM>, to form a V-shaped structure with a curved bottom. Because the first pin <NUM> and the second pin <NUM> of the light source <NUM> as well as the conducting wire <NUM> and the insulating layer <NUM> of the connecting wire <NUM> are cylindrical structures, the first clip <NUM>, the second clip <NUM>, and the third clip <NUM> with an arc-shaped bottom can be in full contact with the surfaces of the first pin <NUM>, the second pin <NUM>, the conducting wire <NUM>, and the insulating layer <NUM>, to increase the frictional forces between the first clip <NUM> and the first pin <NUM> as well as the second pin <NUM>, between the second clip <NUM> and the conducting wire <NUM>, and between the third clip <NUM> and the insulating layer <NUM>. Two sides of each of the first clip <NUM>, the second clip <NUM>, and the third clip <NUM> perpendicular to the axial direction of the conductive terminal <NUM> bend toward the same surface of the first clip <NUM>, the second clip <NUM>, and the third clip <NUM> respectively, which facilitates the machine to process the first clip <NUM>, the second clip <NUM>, and the third clip <NUM>, making it easy for the first clip <NUM> to surround and press-fit on the first pin <NUM> and the second pin <NUM>, for the second clip <NUM> to surround and press-fit on the conducting wire <NUM>, and for the third clip <NUM> to surround and press-fit on the insulating layer <NUM>. Therefore, the anti-pull-apart decorative lamp of this embodiment is applicable to large-scale production, thereby improving the production efficiency.

In addition, a length of the first clip <NUM> in a circumferential direction of the conductive terminal <NUM> is greater than or equal to circumferential lengths of the first pin <NUM> and the second clip <NUM> and a length of the second clip <NUM> in the circumferential direction of the conductive terminal <NUM> is greater than or equal to a circumferential length of the conducting wire <NUM>, so that the first clip <NUM> and the second clip <NUM> can at least cover the surfaces of the first pin <NUM>, the second pin <NUM>, and the conducting wire <NUM> by one lap, which increases the contact areas between the first clip <NUM> and the first pin <NUM> as well as the second pin <NUM> and between the second clip <NUM> and the conducting wire <NUM> and thus increases the frictional forces between the first clip <NUM> and the first pin <NUM> as well as the second pin <NUM> and between the second clip <NUM> and the conducting wire <NUM>, thereby improving the anti-pull capability in this embodiment.

Referring to <FIG>, according to another embodiment of the present disclosure, an anti-pull-apart decorative lamp is provided. Based on the foregoing embodiment, a surface of the insulating plastic <NUM> away from the conductive terminal <NUM> is surrounded by a plastic layer <NUM>. The plastic layer <NUM> encapsulates the insulating plastic <NUM> inside the plastic layer <NUM>, so that the first pin <NUM>, the second pin <NUM>, the conductive terminal <NUM>, and the wiring connector <NUM> are encapsulated inside the plastic layer <NUM>, thereby improving the insulation performance of these parts. In addition, the plastic layer <NUM> may be designed into different forms, so that better appearance is achieved in this embodiment. For the plastic layer <NUM>, a heat-sealed plastic tube may be adopted to be sleeved on the insulating plastic <NUM>, and then heated to shrink and become tightly wrapped on the insulating plastic <NUM>. Alternatively, various different forms may be injected on the surface of the insulating plastic <NUM> through injection molding.

An anti-pull-apart lamp string according to an embodiment of a second aspect of the present disclosure is described below in detail with reference to the accompanying drawings.

Referring to <FIG>, according to an embodiment of the present disclosure, an anti-pull-apart lamp string is provided, including the anti-pull-apart decorative lamp in the embodiment of the first aspect and a cable <NUM>. In an axial direction of the cable <NUM>, a pair of connecting wires <NUM> are led out at intervals. Each of the first pin <NUM> and the second pin <NUM> of the light source <NUM> is electrically connected to a respective one of the pair of connecting wires <NUM> by the conductive terminal <NUM>. Light sources <NUM> are connected in parallel to the cable <NUM>. One end of the cable <NUM> is provided with a power interface <NUM>. The power interface <NUM> is provided with a positive terminal <NUM> and a negative terminal <NUM>. The positive terminal <NUM> is electrically connected to the first pin <NUM> of the light source <NUM>. The negative terminal <NUM> is electrically connected to the second pin <NUM> of the light source <NUM>. The positive terminal <NUM> and the negative electrode <NUM> of the power interface <NUM> are electrically connected to a positive output terminal and a negative output terminal of a drive power supply, respectively. In this embodiment, since the light source <NUM> and the connecting wire <NUM> are connected by roll-pressing the conductive terminal <NUM>, and the insulating plastic <NUM> is used around the conductive terminal <NUM>, the first pin <NUM>, the second pin <NUM>, and the wiring connector <NUM> for fastening, the light source <NUM> has relatively high anti-pull performance, so that the risk of electric shocks caused by the exposure of the connecting wire <NUM> to the air due to the pulling-apart of the light source <NUM> can be avoided. Therefore, in this embodiment, a drive power supply with an output voltage of any value can be used for driving. In addition, the anti-pull-apart decorative lamps can be connected in parallel, so that the length of the cable <NUM> can be increased. Therefore, the anti-pull-apart lamp string of this embodiment can be arranged on a relatively long object and applied to different occasions.

Referring to <FIG>, according to another embodiment of the present disclosure, an anti-pull-apart lamp string is provided, including the anti-pull-apart decorative lamp in the embodiment of the first aspect and a cable <NUM>. One end of the cable <NUM> is provided with a power interface <NUM>. The power interface <NUM> is provided with a positive terminal <NUM> and a negative terminal <NUM>. The anti-pull-apart decorative lamp in the embodiment of the first aspect is connected to the connecting wire <NUM> of the cable <NUM> and is connected in series between the positive terminal <NUM> and the negative terminal <NUM> by the cable <NUM>. Because the light source <NUM> is electrically connected to the connecting wire <NUM> of the cable <NUM> by the conductive terminal <NUM>, it has a relatively high anti-pull performance, so that the risk of electric shocks caused by the exposure of connecting ends of the light source <NUM> and the cable <NUM> to the air due to the pulling-apart of the light source <NUM> can be avoided. Therefore, in this embodiment, a drive power supply with an output voltage of any value can be used for driving, so that the driving capability of the power supply or the quantity of serially connected lamps can be increased, thereby avoiding inadequate brightness caused by an excessively long cable <NUM> or an excessively large quantity of serially connected lamps, reducing the quantity of connected external power supplies, increasing the wiring length, and allowing the anti-pull-apart lamp string to be applied to different occasions.

The anti-pull-apart lamp string in this embodiment of the present disclosure includes the anti-pull-apart decorative lamp in any foregoing embodiment. Therefore, the anti-pull-apart lamp string in this embodiment of the present disclosure has the technical effects produced by the anti-pull-apart decorative lamp in any foregoing embodiment. Therefore, for specific technical effects of the anti-pull-apart decorative lamp in this embodiment of the present disclosure, reference may be made to the technical effects of the anti-pull-apart decorative lamp in any foregoing embodiment.

Claim 1:
An anti-pull-apart decorative lamp, comprising:
a light source (<NUM>) comprising a light-emitting chip (<NUM>) and a lead wire frame (<NUM>), the lead wire frame (<NUM>) having a first end electrically connected to the light-emitting chip (<NUM>) and a second end at which a pin (<NUM>, <NUM>) is provided;
a connecting wire (<NUM>) comprising a conducting wire (<NUM>) and an insulating layer (<NUM>), the insulating layer (<NUM>) covering a side wall of the conducting wire (<NUM>), the conducting wire (<NUM>) at one end of the connecting wire (<NUM>) protruding from the insulating layer (<NUM>) and forming a wiring connector (<NUM>), and the other end of the connecting wire (<NUM>) being electrically connectable to a drive power supply;
a conductive terminal (<NUM>) having a first end provided with a first clip (<NUM>), a second end provided with a second clip (<NUM>), the first clip (<NUM>) being roll-pressed against the pin (<NUM>, <NUM>) and tightly surrounding the pin (<NUM>, <NUM>), and the second clip (<NUM>) being roll-pressed against the wiring connector (<NUM>) and tightly surrounding the wiring connector (<NUM>); and
an insulating plastic (<NUM>) surrounding the wiring connector (<NUM>), the pin (<NUM>, <NUM>), and the conductive terminal (<NUM>), the insulating plastic (<NUM>) being configured for preventing the pin (<NUM>, <NUM>) from short-circuiting and/or electric leakage;
wherein
a length of the first clip (<NUM>) in a circumferential direction of the conductive terminal (<NUM>) is greater than or equal to a circumferential length of the pin (<NUM>, <NUM>), and a length of the second clip (<NUM>) in the circumferential direction of the conductive terminal (<NUM>) is greater than or equal to a circumferential length of the conducting wire (<NUM>), so that the first clip (<NUM>) and the second clip (<NUM>) at least cover surfaces of the pin (<NUM>, <NUM>) and the conducting wire (<NUM>) by one lap, which increases contact areas between the first clip (<NUM>) and the pin (<NUM>, <NUM>) and between the second clip (<NUM>) and the conducting wire (<NUM>) and thus increases frictional forces between the first clip (<NUM>) and the pin (<NUM>, <NUM>) and between the second clip (<NUM>) and the conducting wire (<NUM>).