CN210740005U - Alternating current LED lamp filament and lamp - Google Patents

Abstract

The utility model relates to an exchange LED filament and lamps and lanterns, wherein exchange the LED filament and include flexible insulating support and install the LED lamp cluster on insulating support, a fretwork region has on insulating support's the middle part, and the multiunit spring is right on this fretwork regional week edge has set firmly, and the LED lamp cluster includes many LED lamp strips, and each LED lamp strip is to setting firmly in the fretwork region through a set of spring, and all LED lamp strip series connection settings, still have the rectifier circuit of being connected with the LED lamp cluster on the insulating support, this rectifier circuit so that this LED lamp cluster can the direct access alternating current work to solve current LED filament series connection and set up the problem that dead lamp can lead to whole LED filament condemned problem and can't buckle.

Description

Alternating current LED lamp filament and lamp

Technical Field

The utility model relates to the field of lighting, specifically relate to a interchange LED filament and lamps and lanterns.

Background

The LED filament lamp is similar to a common incandescent lamp in shape, can realize nearly 360-degree full-circle light emission, and has the advantages of energy conservation, long service life and high environmental protection compared with the common incandescent lamp. The method is widely applied to the fields of antique decoration, engineering brightening decoration, home illumination and the like.

In the prior art, an LED filament in an LED filament lamp generally encapsulates a plurality of LED chips on a long substrate in a COB (chip-on-board) manner, and all the LED chips on the substrate are serially connected to form a single high-voltage LED filament, so as to facilitate the power driving miniaturization design. In addition, the existing LED lamp filaments only can work by adopting direct current, so that a driving power supply with larger volume needs to be configured.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an exchange LED filament to solve current LED filament series connection and set up the problem that dead lamp can lead to whole LED filament condemned problem and can't directly adopt the alternating current to carry out work.

The specific scheme is as follows:

an alternating current LED filament comprises a support and an LED lamp string arranged on an insulating support, wherein a square hollowed-out area is arranged in the middle of the support, the LED lamp string comprises a plurality of LED lamp strips, two ends of each LED lamp strip are fixedly arranged on the peripheries of two opposite sides of the hollowed-out area, two adjacent LED lamp strips are electrically connected through a metal sheet, all the LED lamp strips are arranged in series, the support is further provided with a first connecting circuit connected with the anode of the LED lamp string, a second connecting circuit connected with the cathode of the LED lamp string and two connecting electrodes connected with an external alternating current power supply, each connecting electrode is connected with a first diode and a second diode in a parallel connection mode, the first diode is connected with the first connecting circuit, the current flow direction of the first diode is conducted from the connecting electrodes to the first connecting circuit, and the second diode is connected with the second connecting circuit, and the current flow direction of the second diode is conducted from the second connecting circuit to the connecting electrode direction.

Furthermore, a plurality of groups of spring pairs are fixedly arranged on the periphery of the hollow area in the middle of the support, each spring pair comprises two opposite metal springs, and each LED lamp strip is fixedly arranged in the hollow area through one group of spring pairs.

Furthermore, the support is a flexible insulating support, a cavity is formed in the insulating support, and a plastic part for maintaining the deformation of the insulating support is embedded in the cavity.

Further, the plastic part is made of a flexible material with rigidity higher than that of the insulating support.

Further, the plastic part is a rigid part with a specific shape.

Furthermore, two cavities are formed in the insulating support, the two cavities are respectively arranged on two opposite sides of the hollow area fixing spring pair, the metal sheet on the insulating support extends into the cavity on the side, and a conductive part which can be in contact with the metal sheet extending into the cavity is arranged on the outer wall of the shaping part.

The utility model also provides a lamp, include the lamps and lanterns body and install in this internal illuminating part of lamps and lanterns, wherein the illuminating part is above-mentioned arbitrary alternating current LED filament.

The utility model provides an exchange LED filament and prior art and compare and have following advantage: the utility model provides an exchange LED filament can the direct access alternating current use, and the LED lamp cluster is established ties by many LED lamp strips and is formed moreover, consequently under the dead lamp's of certain LED lamp strip the condition, only need to change corresponding LED lamp strip 2 can, need not to change whole LED lamp cluster, can practice thrift the cost.

In addition, the insulating support is made of flexible materials, so that the insulating support can be bent into a certain shape to enable the LED lamp strips to be arranged in a certain shape, the LED lamp strips are connected to the insulating support through metal springs, the metal springs can play a role in damping the LED lamp strips, damage to the LED lamp strips during bending and use can be avoided, and the service life of the alternating current LED filament can be prolonged.

Drawings

Fig. 1 shows a schematic diagram of an ac LED filament.

Fig. 2 shows a schematic diagram of a single LED light bar.

Fig. 3 shows a schematic diagram of the current direction of an alternating current in the alternating current LED filament.

Fig. 4 shows a schematic diagram of another current direction of an alternating current in the alternating current LED filament.

Fig. 5 shows a longitudinal sectional view of an ac LED filament.

Figure 6 shows a cross-sectional view of the shaping.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1 and fig. 2, the present embodiment provides an ac LED filament, which includes a support 1 and a plurality of LED light bars 2 mounted on the support.

Specifically, a hollow area 10 is arranged in the middle of the bracket 1, a plurality of groups of spring pairs 11 are distributed on the periphery of the hollow area 10, each group of spring pairs includes two metal springs 110 arranged in opposite directions, two ends of each metal spring 110 are respectively defined as a first end 110a and a second end 110b, wherein the first end 110a is fixedly arranged on the bracket 1, the second end 110b is a free end, and the second end 110b is arranged towards the other metal spring 110 of the same group of spring pairs 11.

The LED light bar 2 includes a bar-shaped substrate 20 and a plurality of LED chips 21 packaged on the bar-shaped substrate 20 in a COB manner, and two ends of the bar-shaped substrate 20 in the length direction are respectively a positive electrode and a negative electrode of the LED light bar 2. Two ends of each LED light bar 2 are respectively fixed to the second ends 110b of the two springs in the same set of spring pairs 11, and the second ends 110b of the two metal springs are respectively electrically connected to the positive and negative poles of the LED light bar 2. The two adjacent spring pairs 11 are electrically connected through the metal sheet 3 fixedly arranged on the support 1, and all the LED lamp strips are fixed on the support 1 in a series connection mode.

The spring pair 11 in this embodiment can be directly welded to the metal sheet 3 in a welding manner, and the second end 110b of the metal spring can be welded to the positive electrode and the negative electrode of the LED light bar 2 in a welding manner through the electrical connection between the metal spring 110 and the LED light bar 2, so that the metal spring 110 and the LED light bar 2 can be fixed while the electrical connection between the metal spring 110 and the LED light bar 2 is realized.

The bracket 1 further has a connection circuit and two connection electrodes 13 connected to an external ac power supply, the connection circuit includes a first connection circuit 120 connected to the positive electrode of the LED string formed by connecting the LED light bars 2 in series and a second connection circuit 121 connected to the negative electrode of the LED string, each connection electrode 13 is connected to a first diode 140 and a second diode 141 in parallel, two pins of the first diode 140 are connected to the connection electrodes 13 and the first connection circuit 120, respectively, the current flow of the first diode 140 is conducted from the connection electrodes 13 to the first connection circuit 120, two pins of the second diode 141 are connected to the connection electrodes 13 and the second connection circuit 121, respectively, and the current flow of the second diode 141 is conducted from the second connection circuit 121 to the connection electrodes 13.

It should be clear that the reverse voltage of the first diode 140 and the second diode 141 needs to be higher than the voltage of the LED string, so that the ac LED filament can be directly connected to ac power to operate. Specifically, as shown in fig. 3 and 4, when the two connecting electrodes 13 in fig. 3 and 4 are directly connected with an alternating current, as shown in fig. 3, when the upper electrode 13 is positive and the lower electrode 13 is negative, the current direction is as shown by the arrow in fig. 3. When the upper electrode 13 is negative and the lower electrode 13 is positive, the direction of the current flow is shown by the arrow in fig. 4. The first diode 140 and the second diode 141 can perform a rectifying function so that the ac LED filament can be directly operated with ac power.

The LED lamp string in the ac LED filament provided in this embodiment is formed by connecting a plurality of LED lamp strips 2 in series, so that only the corresponding LED lamp strip 2 needs to be replaced under the condition that a certain LED lamp strip 2 dies, the entire LED lamp string does not need to be replaced, and the cost can be saved. Support 1 is preferred to be made by flexible material, therefore support 1 can be buckled into certain shape and make many LED lamp strip 2 be certain shape and arrange, and LED lamp strip 2 adopts metal spring 110 to connect on support 1, and metal spring 110 can play absorbing effect to LED lamp strip 2, can avoid buckling and damage to LED lamp strip 2 when using, can prolong this life who exchanges LED filament.

As a preferable scheme of this embodiment, referring to fig. 5, the support 1 has a cavity 15, and a shaping member 16 with shaping capability is embedded in the cavity 15, and the shaping member 16 can increase the plasticity and the supporting function of the ac LED filament. In particular, the shaping member 16 may be made of a flexible material having a higher rigidity than the stent 1, and the shaping member 16 may increase the shapeability of the stent 1 when the stent 1 is bent. Or the shaping member 16 may be a rigid member having a specific shape, and the flexible stent 1 is formed into the same shape as the shaping member 16 is deformed.

Preferably, referring to fig. 5 and 6, the bracket 1 has two cavities 15, and the two cavities 15 are respectively disposed on two opposite sides of the hollow area 10 where the spring pair 11 is fixed, for example, the hollow area 10 in this embodiment is rectangular, and the two cavities 15 are disposed on the long edge of the hollow area 10. The metal sheet 3 extends into the cavity 15, the plastic part 16 embedded in the cavity is made of an insulating material, the outer wall of the plastic part 16 is provided with a conductive part 160 which can be electrically connected with the metal sheet 3 extending into the cavity 15, and the plastic parts 16 in the two cavities 15 can enable all the LED light bars 2 in the hollow area to be arranged in parallel. Normally, the conductive part 160 on the plastic part 16 does not contact with the metal sheet 3, so all the LED light bars 2 in the hollow area are connected in series. And in the case of a dead lamp, the plastic part 16 is rotated or the plastic part 16 is drawn out and embedded in the cavity 15 of the bracket 1 again, so that the conductive part 160 of the plastic part 16 is in contact with the metal sheet 3 extending into the cavity 15, and all the LED light bars 2 are arranged in parallel, thereby being convenient for detecting which LED light bar 2 is dead.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (6)

1. An exchange LED filament which characterized in that: the LED lamp string comprises a support and an LED lamp string arranged on the support, wherein a square hollow area is arranged in the middle of the support, the LED lamp string comprises a plurality of LED lamp strips, two ends of each LED lamp strip are respectively and fixedly arranged on the peripheries of two opposite sides of the hollow area, the two adjacent LED lamp strips are electrically connected through a metal sheet, so that all the LED lamp strips are arranged in series, the support is further provided with a first connecting circuit connected with the anode of the LED lamp string, a second connecting circuit connected with the cathode of the LED lamp string and two connecting electrodes connected with an external alternating current power supply, each connecting electrode is connected with a first diode and a second diode in a parallel mode, the first diode is connected with the first connecting circuit, the current flow direction of the first diode is conducted from the connecting electrodes to the first connecting circuit, and the second diode is connected with the second connecting circuit, and the current flow direction of the second diode is conducted from the second connecting circuit to the connecting electrode direction.

2. The ac LED filament of claim 1, wherein: the periphery of the hollow area in the middle of the support is fixedly provided with a plurality of groups of spring pairs, each spring pair comprises two oppositely arranged metal springs, and each LED lamp strip is fixedly arranged in the hollow area through one group of spring pairs.

3. The ac LED filament of claim 1, wherein: the support is a flexible insulating support, a cavity is formed in the insulating support, and a plastic part for maintaining the deformation of the insulating support is embedded in the cavity.

4. An ac LED filament according to claim 3, wherein: the plastic part is made of flexible material with rigidity higher than that of the insulating support.

5. An ac LED filament according to claim 3, wherein: the insulating support is provided with two cavities which are respectively arranged on two opposite sides of the hollow area fixing spring pair, the metal sheet on the insulating support extends into the cavity on the side, and the outer wall of the shaping piece is provided with a conductive part which can be in contact with the metal sheet extending into the cavity.

6. The utility model provides a lamp, includes the lamps and lanterns body and installs the luminous piece in the lamps and lanterns body, its characterized in that: the light emitting element is the AC LED filament of any one of claims 1 to 5.

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