CN215001098U - Cascade lamp strip and lighting device - Google Patents
Cascade lamp strip and lighting device Download PDFInfo
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- CN215001098U CN215001098U CN202120572619.5U CN202120572619U CN215001098U CN 215001098 U CN215001098 U CN 215001098U CN 202120572619 U CN202120572619 U CN 202120572619U CN 215001098 U CN215001098 U CN 215001098U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The embodiment of the utility model discloses a cascade light bar and a lighting device, wherein the cascade light bar comprises a plurality of light bar units; each lamp strip unit comprises a lamp strip circuit board, a light-emitting subunit and a constant current driver, wherein the light-emitting subunit and the constant current driver are arranged on the lamp strip circuit board; the head end of the lamp strip circuit board is provided with a positive bonding pad and a negative bonding pad, and the tail end of the lamp strip circuit board is provided with a first connecting bonding pad and a second connecting bonding pad; the light-emitting subunit is electrically connected with the anode bonding pad and the constant current driver; the constant current driver is also electrically connected with the negative electrode bonding pad; first and second power transmission lines, and first and second current spreading lines; the first power transmission line and the first current expansion line are connected with the positive electrode bonding pad and the first connecting bonding pad of each lamp strip unit; and the second power transmission line and the second current expansion line are connected with the negative electrode bonding pad and the second connecting bonding pad of each lamp strip unit. The embodiment of the utility model provides a technical scheme has increased the length that cascades the lamp strip, has improved the luminous homogeneity of cascade lamp strip.
Description
Technical Field
The embodiment of the utility model provides a relate to LED lighting technology field, especially relate to a cascade lamp strip and lighting device.
Background
The flexible lamp strip is also called an LED lamp strip, the shape of the product is like a tie, and the lamp strip is flexible, has bending resistance and strong weather resistance, can be cut at will in length, is convenient to install, and is widely applied to places such as building body outlines, bridges, guardrails, hotels, forest gardens and the like.
In the wide application process, some drawbacks gradually appear, the number of cascade connection of the soft light bars in the prior art is small, the cascade connection length of the products is mostly 5M-20M, when the soft light bars are installed in a large area, a plurality of wires need to be connected to complete wiring, and the voltage drop of the power lines of the soft light bars is large, so that the brightness difference between the head end and the tail end is large, and energy is not saved enough.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a cascade lamp strip and lighting device to increase the length that cascades the lamp strip, reduce and cascade the lamp strip head and the tail luminance difference, improve and cascade the luminous homogeneity of lamp strip.
In a first aspect, the embodiment of the utility model provides a cascade lamp strip, include:
a plurality of light strip units; each lamp strip unit comprises a lamp strip circuit board, a light-emitting subunit and a constant current driver, wherein the light-emitting subunit and the constant current driver are arranged on the lamp strip circuit board; the head end of the lamp strip circuit board is provided with a positive bonding pad and a negative bonding pad, and the tail end of the lamp strip circuit board is provided with a first connecting bonding pad and a second connecting bonding pad; the light-emitting subunit is electrically connected with the anode bonding pad and the constant current driver; the constant current driver is also electrically connected with the negative electrode bonding pad;
a first power line and a second power line; the first power transmission line is connected with the positive electrode bonding pad and the first connecting bonding pad of each light strip unit; the second power transmission line is connected with the negative electrode bonding pad and the second connecting bonding pad of each light strip unit;
a first flow expansion line and a second flow expansion line; the first current spreading line is connected with the positive electrode bonding pad and the first connecting bonding pad of each light strip unit; and the second diffusion line is connected with the negative electrode bonding pad and the second connecting bonding pad of each light strip unit.
Optionally, the light-emitting subunit includes a plurality of LED lamp beads, and the plurality of LED lamp beads are disposed on the light strip circuit board along the extending direction of the light strip circuit board; the LED lamp beads are connected in series;
the LED lamp bead close to the head end of the lamp strip circuit board is electrically connected with the anode bonding pad; and the LED lamp bead close to the tail end of the lamp strip circuit board is electrically connected with the constant current driver.
Optionally, the constant current driver includes a linear constant current driving chip, a first resistor and a second resistor;
the linear constant current driving chip comprises a power supply end, a grounding end, a current setting end and a driving current output end; the LED lamp bead close to the tail end of the lamp strip circuit board is connected with the driving current output end; a first end of the first resistor is connected with the current setting end, and a second end of the first resistor is connected with the grounding end and the negative electrode bonding pad; the first end of the second resistor is connected with the power supply end, and the second end of the second resistor is connected between two adjacent LED lamp beads in the lamp strip unit.
Optionally, a positive electrode bonding pad and a negative electrode bonding pad in the light strip unit at the initial position of the cascade light strip are connected with the first power supply unit;
the first connection pad and the second connection pad in the lamp strip unit at the termination position of the cascade lamp strip are connected with the first power supply unit or the second power supply unit.
Optionally, the device further comprises a pair of connecting line female heads and a pair of connecting line male heads; the positive electrode bonding pad and the negative electrode bonding pad in the lamp strip unit positioned at the initial position of the cascade lamp strip are respectively connected with the first power supply unit through a connecting wire female head; and a first connecting pad and a second connecting pad in the lamp strip unit at the termination position of the cascade lamp strip are respectively connected with the first power supply unit or the second power supply unit through a connecting wire male head.
Optionally, the device further comprises a first plug and a second plug; the first plugs are fixed at the starting positions of the cascade light bars, and the pair of female connecting wire heads are connected with a positive electrode bonding pad and a negative electrode bonding pad in the light strip unit at the starting positions through the first plugs; the second plug is fixed at the termination position of the cascade light bar, and the pair of connecting wire male heads are connected with the first connecting pad and the second connecting pad in the light strip unit at the termination position through the second plug.
Optionally, still include the silica gel shell, every the lamp area unit is located in the silica gel shell.
Optionally, the length of the cascade light bar is greater than or equal to 100M.
Optionally, the light strip circuit board is a flexible circuit board; the first power transmission line and the second power transmission line are wires formed on the lamp strip circuit board, and the first current expansion line and the second current expansion line are wires coated with rubber.
In a second aspect, an embodiment of the present invention provides a lighting device, including many the first aspects arbitrary cascade lamp strip, many cascade lamp strip parallel connection.
The embodiment of the utility model provides a technical scheme through set up the constant current driver on the circuit board of each lamp area unit, can provide stable current output in wide driving voltage range, improves the homogeneity of each lamp area unit luminance to improve the cascade capacity of whole lamp area structure; in addition, a first current spreading line and a second current spreading line are arranged in the cascade light bars, and the first current spreading line and the second current spreading line pass through a positive electrode bonding pad, a negative electrode bonding pad, a first connecting bonding pad and a second connecting bonding pad which are arranged in each light bar unit; the first current expansion line is connected with the first power transmission line in parallel, the second current expansion line is connected with the second power transmission line in parallel, resistance values of the corresponding first power transmission line and the second power transmission line in each lamp strip unit are reduced, accordingly, voltage drop on the power transmission lines is reduced, head-to-tail brightness difference of the cascaded lamp strips is reduced, energy conservation of the cascaded lamp strips is achieved, and meanwhile the length of the cascaded lamp strips is increased.
Drawings
Fig. 1 is an exploded view of a cascade light bar according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a light strip unit provided in an embodiment of the present invention;
fig. 3 is a circuit diagram of a lamp strip unit provided in an embodiment of the present invention;
fig. 4 is a schematic structural view of a cascade light bar provided in an embodiment of the present invention;
fig. 5 is a schematic structural view of another cascade light bar provided in the embodiment of the present invention;
fig. 6 is an exploded view of another cascade light bar provided by an embodiment of the present invention;
fig. 7 is a front view of a cascade light bar provided by an embodiment of the present invention;
fig. 8 is a back view of a cascade light bar according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an illumination device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The embodiment of the utility model provides a cascade lamp strip, fig. 1 is the utility model provides a pair of cascade lamp strip's explosion map, refer to fig. 1, cascade lamp strip includes:
a plurality of light strip units 100; each light strip unit 100 comprises a light strip circuit board 10, and further comprises a light emitting subunit and a constant current driver 30 which are arranged on the light strip circuit board 10; the head end of the lamp strip circuit board 10 is provided with a positive electrode bonding pad 41 and a negative electrode bonding pad 42, and the tail end is provided with a first connection bonding pad 51 and a second connection bonding pad 52; the light emitting sub-unit is electrically connected with the positive electrode pad 41 and the constant current driver 30; the constant current driver 30 is also electrically connected to the negative electrode pad 42;
a first power line and a second power line; the first power line is connected to the positive electrode pad 41 and the first connection pad 51 of each light strip unit 100; the second power line is connected to the negative electrode pad 42 and the second connection pad 52 of each light strip unit 100;
a first flow expansion line L1 and a second flow expansion line L2; the first current spreading line L1 is connected to the positive electrode pad 41 and the first connection pad 51 of each light strip unit 100; the second current spreading line L2 is connected to the negative electrode pad 42 and the second connection pad 52 of each light strip unit 100.
Specifically, the cascade light bar comprises a plurality of light strip units 100, and the light strip units 100 are connected in parallel. Fig. 2 is a schematic structural diagram of a lamp strip unit provided in an embodiment of the present invention, referring to fig. 2, each lamp strip unit 100 includes a lamp strip circuit board 10, and the lamp strip circuit board 10 may be a flexible circuit board. The light strip circuit board 10 is provided with a light emitting subunit and a constant current driver 30, and the head end of the light strip circuit board 10 is further provided with a positive electrode bonding pad 41 and a negative electrode bonding pad 42. The cascade light bars further comprise a first power transmission line and a second power transmission line; the first power line is connected to the positive bonding pad 41 of each light strip unit 100; the second power line is connected to the negative bond pad 42 of each light strip unit 100. The first and second power lines may be metal layers formed in the strip circuit board 10. The light emitting sub-unit in the light strip unit 100 is electrically connected to the positive electrode pad 41 and the constant current driver 30, and the constant current driver 30 is electrically connected to the negative electrode pad 42. That is, each light emitting sub-unit is connected in parallel between the first power line and the second power line, so that the positive pad 41, the light emitting sub-unit, the constant current driver 30, and the negative pad 42 in each light strip unit 100 form a closed loop, and the light emitting sub-unit has a current flowing therethrough to emit light. By arranging the constant current driver 30 on the circuit board of each lamp strip unit 100, stable current output can be provided within a wide driving voltage range, and the uniformity of the brightness of each lamp strip unit 100 is improved, so that the cascade capacity of the whole lamp strip structure is improved.
In addition, a first current spreading line L1 and a second current spreading line L2 are additionally arranged in the cascade light bar, and a first connection pad 51 and a second connection pad 52 are arranged at the tail end of the light strip circuit board 10. The first power line is connected to the positive pad 41 and the first connection pad 51 of each light strip unit 100; the second power line is connected to the negative electrode pad 42 and the second connection pad 52 of each light strip unit 100. The first current spreading line L1 is connected to the positive electrode pad 41 and the first connection pad 51 of each light strip unit 100; the second spreading line L2 is connected to the negative electrode pad 42 and the second connection pad 52 of each light strip unit 100. Through the positive electrode pad 41, the negative electrode pad 42 and the first connection pad 51 and the second connection pad 52 that set up in every lamp area unit 100, make first spread streamline L1 and first power transmission line parallel connection, second spread streamline L2 and second power transmission line parallel connection, the resistance of the first power transmission line and the second power transmission line that correspond in every lamp area unit 100 has been reduced, thereby the voltage drop on the power transmission line has been reduced, cascade lamp strip head and the tail luminance difference has been reduced, when having realized the energy-conservation nature of cascade lamp strip, the length of cascade lamp strip has been increased.
The positive electrode bonding pad 41, the negative electrode bonding pad 42, the first connection bonding pad 51 and the second connection bonding pad 52 on the lamp strip circuit board 10 can be formed by a silver plating process, are not easy to be oxidized, and have high-end appearance. The preparation of the power transmission line is based on a 3 ounce process, so that the internal resistance of the power transmission line is reduced, the luminous efficiency of the luminous subunit is improved, and the problem of large brightness difference between the head and the tail of the product is further improved.
The embodiment of the utility model provides a technical scheme through set up the constant current driver on the circuit board of each lamp area unit, can provide stable current output in wide driving voltage range, improves the homogeneity of each lamp area unit luminance to improve the cascade capacity of whole lamp area structure; in addition, a first current spreading line and a second current spreading line are arranged in the cascade light bars, and the first current spreading line and the second current spreading line pass through a positive electrode bonding pad, a negative electrode bonding pad, a first connecting bonding pad and a second connecting bonding pad which are arranged in each light bar unit; make first diffusion line and first power transmission line parallel connection, second diffusion line and second power transmission line parallel connection have reduced the resistance of the first power transmission line that corresponds in every lamp area unit and second power transmission line, have reduced the pressure drop on the power transmission line. Through the added current expansion lines, the differential pressure caused by long cascade of the circuit is compensated, so that the brightness difference of the head and tail light-emitting sub-units is reduced, the energy conservation of the cascade light bars is realized, and the length of the cascade light bars is increased.
Optionally, fig. 3 is a circuit diagram of a lamp strip unit provided in an embodiment of the present invention, referring to fig. 2-3, the light-emitting sub-unit includes a plurality of LED lamp beads 20, and the plurality of LED lamp beads 20 are disposed on the lamp strip circuit board 10 along an extending direction of the lamp strip circuit board 10; the LED lamp beads 20 are connected in series;
the LED lamp beads 20 close to the head end of the lamp strip circuit board 10 are electrically connected with the positive bonding pad 41; the LED lamp beads 20 close to the tail end of the lamp strip circuit board 10 are electrically connected with the constant current driver 30.
Wherein, LED lamp pearl 20 can be 2835 lamp pearl, and 2835 lamp pearl is well power paster super bright emitting diode, because its size is 2.8 (length) x 3.5 (width) x 0.8 (thickness) mm, so according to paster LED lamp pearl 20 size naming method, name is 2835 lamp pearl. 2835 lamp pearl can change the use, and its luminance and good heat dissipation can effectively solve the heat dissipation problem of cascading the lamp strip.
Alternatively, referring to fig. 2 to 3, the constant current driver 30 includes a linear constant current driving chip, a first resistor R1, and a second resistor R2;
the linear constant current driving chip comprises a power supply terminal VCC, a ground terminal GND, a current setting terminal VFB and a driving current output terminal DRV; the LED lamp beads 20 close to the tail end of the lamp strip circuit board 10 are connected with a driving current output end DRV; a first end of the first resistor R1 is connected to the current setting terminal VFB, and a second end of the first resistor R1 is connected to the ground terminal GND and the negative pad 42; the first end of the second resistor R2 is connected with a power supply terminal VCC, and the second end of the second resistor R2 is connected between two adjacent LED lamp beads 20 in the lamp strip unit 100.
Specifically, constant current driver 30 includes linear constant current driver chip, the embodiment of the utility model provides an in linear constant current driver chip can be the linear constant current driver chip of a single channel low dropout. The low feedback voltage of the low-voltage-difference linear constant-current driving chip is 0.3V, and the current flowing through the LED lamp beads 20 can be directly set on the path of the LED lamp beads 20. The light-emitting subunit includes a plurality of LED lamp beads 20 connected in series, and fig. 2 and 3 exemplarily show 15 LED lamp beads 20. A plurality of LED lamp beads 20 are disposed on the lamp strip circuit board 10 along the extending direction of the lamp strip circuit board 10. The LED lamp bead 20 close to the head end of the lamp strip circuit board 10 is connected with the positive bonding pad 41, and a first voltage signal U1 is input from the positive bonding pad 41. The LED lamp beads 20 close to the tail end of the lamp strip circuit board 10 are connected with a driving current output end DRV of the linear constant current driving chip; the first end of the first resistor R1 is connected to the current setting terminal VFB, the second end of the first resistor R1 is connected to the ground terminal GND and the negative pad 42, and the second voltage signal U2 is inputted from the negative pad 42.
The output current value of the linear constant current driving chip is set by the first resistor R1, the first resistor R1 is an external resistor connected between the ground GND and the current setting terminal VFB, and the feedback voltage of the linear constant current driving chip is 0.3V, that is, the reference setting voltage value of the current setting terminal is 0.3V. The output current can be set through the adjustment of the external resistance value, so that the current flowing through the LED lamp beads 20 can be set. For example, when the LED driving current is 60mA, the resistance of the first resistor R1 is 5 ohms. The LED driving current can reach 150mA at most. The embodiment of the utility model provides an in 0.3V's low dropout makes linear constant current driver chip can provide stable current output in wide driving voltage range, greatly strengthens the cascade ability of constant current lamp strip module, and the chip only needs an external resistance to set up drive current.
In addition, the voltage of the driving current output end is small, for example, in the case of outputting 120mA, the minimum voltage of the driving current output end DRV is 0.4V, and the voltage between the positive electrode pad 41 and the negative electrode pad 42 can be provided to the LED lamp beads 20 in the light emitting sub-unit to the maximum, so that the number of the LED lamp beads 20 connected in series in the light emitting sub-unit can be increased to the maximum, and the consistency of the brightness can be maintained. The setting of the second resistor R2 can enhance the reliability of the lamp strip, avoid the lamp strip to damage the lamp under the abnormal conditions of hot plugging or reverse connection of a power supply and the like, reduce the power consumption of the chip under the high-voltage application environment and improve the reliability of the product.
Optionally, the positive electrode pad 41 and the negative electrode pad 42 in the light strip unit 100 located at the start position of the cascade light strip are connected to the first power supply unit;
the first connection pad 51 and the second connection pad 52 in the light strip unit 100 located at the termination position of the cascade light strip are connected to the first power supply unit 600 or the second power supply unit 700.
Specifically, fig. 4 is a schematic structural diagram of a cascade light bar provided in an embodiment of the present invention; referring to fig. 4, the positive electrode pad 41 and the negative electrode pad 42 in the light strip unit 100 at the start position of the cascade light bar are connected to the first power supply unit 600, and the first power supply unit 600 supplies power to the cascade light bar through the positive electrode pad 41 and the negative electrode pad 42 in the light strip unit 100 at the start position of the cascade light bar. Due to the first power line and the positive bonding pad 41 and connection of each light strip unit 100; the second power line is connected to the negative electrode pad 42 of each strip unit 100; therefore, the power provided by the first power supply unit 600 can be transmitted to each light strip unit 100 in the cascaded light strip through the first power transmission line and the second power transmission line, so that the operation of the whole cascaded light strip is realized. In the prior art, a single-ended power supply mode is adopted, and certain resistance exists in the first power transmission line and the second power transmission line, so that voltage drop can be generated on the power transmission lines of the light bars, and the voltage input by the light strip unit 100 close to the first power supply unit 600 is larger than the voltage input by the light strip unit 100 far away from the first power supply unit 600, so that the brightness difference of the head end and the tail end of the cascaded light bars is larger. The embodiment of the present invention adopts a double-end power supply manner, except that the positive pad 41 and the negative pad 42 in the light strip unit 100 located at the initial position of the cascade light strip are connected to the first power supply unit 600; the first connection pad 51 and the second connection pad 52 in the light strip unit 100 located at the termination position of the cascade light strip are also connected to the second power supply unit 700.
Since the first power line is connected to the positive electrode pad 41 and the first connection pad 51 of each light strip unit 100; the second power line is connected to the negative electrode pad 42 and the second connection pad 52 of each light strip unit 100. Therefore, the first connection pad 51 and the second connection pad 52 in the light strip unit 100 at the termination position of the cascade light strip are connected to the second power supply unit 700, so that the tail ends of the first power transmission line and the second power transmission line can be connected to the second power supply unit 700, and double-end power supply is realized. That is to say, a first end of the first power line is connected to the first power unit 600, and a second end of the first power line is connected to the second power unit 700, at this time, it is required to ensure that voltages provided by the first power unit 600 and the second power unit 700 for the first power line are equal, and then potentials at any position on the first power line are equal; similarly, the voltages provided by the first power unit 600 and the second power unit 700 for the second power line are equal, and the potentials at any position on the second power line are equal. The voltage obtained by each lamp strip unit 100 can be equal, so that the light emitting uniformity of the whole cascade lamp strip is improved, the energy saving performance of the cascade lamp strip is realized, and the length of the cascade lamp strip is increased.
Or, fig. 5 is another kind of cascade lamp strip's that the embodiment of the utility model provides a structural schematic diagram, refer to fig. 5, first power supply unit 600 is all connected to the first end of first power transmission line and second power transmission line, and first power supply unit 600 is also all connected to the second end of first power transmission line and second power transmission line, and wherein, power supply unit's positive pole is connected at the both ends of first power transmission line, and power supply unit's negative pole is connected at the both ends of second power transmission line. At the moment, the effect of double-end power supply can be achieved by using one power supply.
Optionally, fig. 6 is an explosion diagram of another kind of cascade lamp strip that the embodiment of the present invention provides, fig. 7 is a front view of a cascade lamp strip that the embodiment of the present invention provides, fig. 8 is a back view of a cascade lamp strip that the embodiment of the present invention provides, refer to fig. 6-8, an exemplary lamp strip unit in the lamp strip that draws in the picture. The light bar further comprises a pair of female connecting line heads 200 and a pair of male connecting line heads 300; the positive electrode bonding pad 41 and the negative electrode bonding pad 42 in the light strip unit 100 at the initial position of the cascade light strip are respectively connected with the first power supply unit 600 through a connecting wire female head 200; the first connection pad 51 and the second connection pad 52 in the light strip unit 100 at the termination position of the cascade light strip are respectively connected with the first power supply unit 600 or the second power supply unit 700 through a connection male connector 300. The female connection line head 200 includes a first female connection line head 210 and a second female connection line head 220, the first female connection line head 210 is connected to the positive electrode pad 41, and the second female connection line head 220 is connected to the negative electrode pad 42. The male connector 300 includes a first male connector 310 and a second male connector 320, the first male connector 310 is connected to the first connection pad 51, and the second male connector 320 is connected to the second connection pad 52. The power supply unit is connected with the female connector 200 of the connecting line and the male connector 300 of the connecting line at two ends of the cascade light bar, so that power is supplied to the cascade light bar.
Optionally, referring to fig. 6-8, a first plug 410 and a second plug 420 are further included; the first plugs 410 are fixed at the initial positions of the cascade light bars, and the pair of female connecting wire heads 200 are connected with the positive electrode bonding pad 41 and the negative electrode bonding pad 42 in the light strip unit 100 at the initial positions through the first plugs 410; the second plugs 420 are fixed at the termination positions of the cascade light bars, and the pair of connecting wire male connectors 300 are connected with the first connecting pad 51 and the second connecting pad 52 in the light strip unit 100 at the termination positions through the second plugs 420. The first plug 410 is used for protecting the positive electrode pad 41 and the negative electrode pad 42 in the light strip unit 100 at the starting position, and the second plug 420 is used for protecting the first connection pad 51 and the second connection pad 52 in the light strip unit 100 at the ending position.
Optionally, referring to fig. 6-8, the cascade light bar further includes a silicone housing 500, and each light strip unit 100 is located in the silicone housing 500. The shell of the cascade light bar is made of anti-burst and anti-yellowing silica gel, and the silica gel shell 500 is formed through a silica gel extrusion process, so that the protection level of the cascade light bar can be improved, and the IP level can reach IP 67. The length of the cascade light bar is greater than or equal to 100M.
Optionally, the light strip circuit board 10 is a flexible circuit board; the first power line and the second power line are wires formed on the light strip circuit board 10, and the first current spreading line L1 and the second current spreading line L2 are wires coated with rubber.
Specifically, the first power line and the second power line may be conductive metal layers formed on the light strip circuit board 10, and the first current spreading line L1 and the second current spreading line L2 may include a conductive metal core and a rubber covering the conductive metal core. The rubber comprises a wiring opening, and the positive electrode pad 41 and the first wiring pad are connected with the conductive metal wire core in the first current spreading line L1 exposed out of the wiring opening; the negative electrode pad 42 and the second wiring pad are connected to the conductive metal core in the second diffusion line L2 exposed by the wiring opening. The first current spreading line L1 and the second current spreading line L2 can be tightly attached to the back surface of the light strip circuit board 10. The lamp strip and the flow expansion line are extruded simultaneously, the flow expansion line is increased to expand the flow of the lamp strip, and the cascade length is increased.
The embodiment of the utility model provides a still provide a lighting device, fig. 9 is the utility model provides a pair of lighting device's schematic structure diagram, refer to fig. 9, lighting device includes many above-mentioned arbitrary embodiments cascade lamp strip, many cascade lamp strip parallel connection.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A cascade light bar, comprising:
a plurality of light strip units; each lamp strip unit comprises a lamp strip circuit board, a light-emitting subunit and a constant current driver, wherein the light-emitting subunit and the constant current driver are arranged on the lamp strip circuit board; the head end of the lamp strip circuit board is provided with a positive bonding pad and a negative bonding pad, and the tail end of the lamp strip circuit board is provided with a first connecting bonding pad and a second connecting bonding pad; the light-emitting subunit is electrically connected with the anode bonding pad and the constant current driver; the constant current driver is also electrically connected with the negative electrode bonding pad;
a first power line and a second power line; the first power transmission line is connected with the positive electrode bonding pad and the first connecting bonding pad of each light strip unit; the second power transmission line is connected with the negative electrode bonding pad and the second connecting bonding pad of each light strip unit;
a first flow expansion line and a second flow expansion line; the first current spreading line is connected with the positive electrode bonding pad and the first connecting bonding pad of each light strip unit; and the second diffusion line is connected with the negative electrode bonding pad and the second connecting bonding pad of each light strip unit.
2. The cascade light bar of claim 1, wherein the light emitting subunit comprises a plurality of LED light beads, and the plurality of LED light beads are disposed on the light strip circuit board along an extending direction of the light strip circuit board; the LED lamp beads are connected in series;
the LED lamp bead close to the head end of the lamp strip circuit board is electrically connected with the anode bonding pad; and the LED lamp bead close to the tail end of the lamp strip circuit board is electrically connected with the constant current driver.
3. The cascade light bar of claim 2, wherein the constant current driver comprises a linear constant current driving chip, a first resistor and a second resistor;
the linear constant current driving chip comprises a power supply end, a grounding end, a current setting end and a driving current output end; the LED lamp bead close to the tail end of the lamp strip circuit board is connected with the driving current output end; a first end of the first resistor is connected with the current setting end, and a second end of the first resistor is connected with the grounding end and the negative electrode bonding pad; the first end of the second resistor is connected with the power supply end, and the second end of the second resistor is connected between two adjacent LED lamp beads in the lamp strip unit.
4. The cascade light bar of claim 1, wherein a positive pad and a negative pad in the light bar unit at the start position of the cascade light bar are connected to the first power supply unit;
the first connection pad and the second connection pad in the lamp strip unit at the termination position of the cascade lamp strip are connected with the first power supply unit or the second power supply unit.
5. The cascade light bar of claim 4, further comprising a pair of female connectors and a pair of male connectors; the positive electrode bonding pad and the negative electrode bonding pad in the lamp strip unit positioned at the initial position of the cascade lamp strip are respectively connected with the first power supply unit through a connecting wire female head; and a first connecting pad and a second connecting pad in the lamp strip unit at the termination position of the cascade lamp strip are respectively connected with the first power supply unit or the second power supply unit through a connecting wire male head.
6. The cascade light bar of claim 5, further comprising a first plug and a second plug; the first plugs are fixed at the starting positions of the cascade light bars, and the pair of female connecting wire heads are connected with a positive electrode bonding pad and a negative electrode bonding pad in the light strip unit at the starting positions through the first plugs; the second plug is fixed at the termination position of the cascade light bar, and the pair of connecting wire male heads are connected with the first connecting pad and the second connecting pad in the light strip unit at the termination position through the second plug.
7. The cascade light bar of claim 1, further comprising a silicone housing, wherein each of the light strip units is located within the silicone housing.
8. The cascade light bar of claim 1, wherein the length of the cascade light bar is greater than or equal to 100M.
9. The cascade light bar of claim 1, wherein the light strip circuit board is a flexible circuit board; the first power transmission line and the second power transmission line are wires formed on the lamp strip circuit board, and the first current expansion line and the second current expansion line are wires coated with rubber.
10. A lighting device comprising a plurality of cascaded light bars according to any one of claims 1-9, wherein the plurality of cascaded light bars are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120572619.5U CN215001098U (en) | 2021-03-19 | 2021-03-19 | Cascade lamp strip and lighting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114811472A (en) * | 2022-06-30 | 2022-07-29 | 深圳市兴连鑫光源有限公司 | Breakthrough realization high-efficiency portable power supply device soft lamp strip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811472A (en) * | 2022-06-30 | 2022-07-29 | 深圳市兴连鑫光源有限公司 | Breakthrough realization high-efficiency portable power supply device soft lamp strip |
| CN114811472B (en) * | 2022-06-30 | 2022-09-20 | 深圳市兴连鑫光源有限公司 | Breakthrough soft lamp strip capable of realizing high-efficiency portable power supply |
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