CN107740946B - Chained LED lamp strip and control method thereof - Google Patents

Chained LED lamp strip and control method thereof Download PDF

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Publication number
CN107740946B
CN107740946B CN201711052924.6A CN201711052924A CN107740946B CN 107740946 B CN107740946 B CN 107740946B CN 201711052924 A CN201711052924 A CN 201711052924A CN 107740946 B CN107740946 B CN 107740946B
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rotating wheel
light
gear
circular rotating
micro usb
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CN107740946A (en
Inventor
王汉熙
胡佳文
罗丹
陈璟
刘博�
易茂祥
张进
周同林
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/22—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape
    • F21S4/24—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape of ribbon or tape form, e.g. LED tapes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/0015—Fastening arrangements intended to retain light sources
    • F21V19/0025—Fastening arrangements intended to retain light sources the fastening means engaging the conductors of the light source, i.e. providing simultaneous fastening of the light sources and their electric connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The invention relates to the field of lighting equipment, and provides a chained LED lamp strip and a control method thereof. The light bar is formed by connecting a plurality of lighting units, each lighting unit comprises a light-emitting main body, an upper round rotating wheel, a lower round rotating wheel, micro USB male ports and micro USB female seats, the upper round rotating wheel and the lower round rotating wheel are respectively sleeved on the light-emitting main body in an upper layer and a lower layer, the micro USB male ports are fixed on the upper round rotating wheel, the micro USB female seats are fixed on the lower round rotating wheel, and LED patches are arranged in the light-emitting main body. The light bar is convenient to carry, energy-saving and environment-friendly, can form any light curtain array, has good flexibility, and meets the light distribution requirements of indoor exhibit shooting and outdoor shooting.

Description

Chained LED lamp strip and control method thereof
Technical Field
The invention relates to the field of lighting equipment, in particular to a chain LED lamp strip and a control method thereof, which are suitable for photographic light distribution.
Background
The LED lamp is rapidly popularized in the photography world due to the characteristics of high light efficiency, low voltage, small volume, long service life, high response speed, strong shock resistance, energy conservation, environmental protection and the like, and becomes a new generation of light distribution material and basic light source equipment. At present, the camera light supplementing lamps in the market all adopt LED lamps as luminous bodies and adopt rechargeable batteries for power supply.
In general indoor exhibit photographing, in order to highlight the effect of the exhibit, general LED lamps concentrate light on the exhibit, and the surrounding environment is relatively dark, which makes the scene effect poor when a panoramic image video is manufactured. The phenomenon of overexposure of the reflector lamp also often occurs when outdoor shooting, meanwhile, light distribution equipment with larger volume is difficult to carry, and scene light distribution is also more complicated.
In summary, the existing LED lamps as light distribution devices have the following disadvantages:
(1) The LED lamps purchased in the market are fixed in form, a plurality of groups of LED lamps are matched under the light distribution requirement of shooting different scenes, and the formed LED lamps are relatively heavy in size and cannot meet the requirements of convenient movement and portability of indoor exhibit shooting and outdoor shooting;
(2) The LED lamp with the plug-in equipment is difficult to meet the requirement of outdoor photography, the external shooting lamp with the rechargeable battery is high in power and size, meanwhile, the rechargeable battery with large size is required to be arranged, and the shutter synchronization speed is generally limited to be within 1/200 second.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the chained LED lamp strip and the control method thereof, which are convenient to carry, energy-saving and environment-friendly, can form any light curtain array, have good flexibility and meet the light distribution requirements of indoor exhibit shooting and outdoor shooting.
The aim of the invention is achieved by the following technical measures: the utility model provides a chain Led lamp strip is formed by connecting a plurality of lighting unit, lighting unit includes luminous main part, goes up circular runner, lower circular runner, micro USB public mouth, micro USB female seat, go up circular runner and lower circular runner and divide into upper and lower two-layer cover on luminous main part, micro USB public mouth is fixed on last circular runner, micro USB female seat is fixed on circular runner down, be equipped with the Led paster in the luminous main part.
In the above technical scheme, the luminous main body comprises a circular bottom plate, a Led patch, a conical light homogenizing barrel, a soft light plate and a light homogenizing lens, wherein the Led patch is arranged in the center of the circular bottom plate, the small opening end of the conical light homogenizing barrel is opposite to the Led patch, the large opening end of the conical light homogenizing barrel is opposite to the soft light plate, the light homogenizing lens is arranged above the soft light plate, and a universal rubber pad is embedded at the bottom of the circular bottom plate.
In the technical scheme, a 180-tooth gear is arranged on the contact surface of the upper circular rotating wheel and the lower circular rotating wheel, and a spring used for enabling the upper circular rotating wheel and the lower circular rotating wheel to be in close contact is arranged above the upper circular rotating wheel.
The user connects a plurality of small lighting units into the light bar through micro USB male ports and micro USB female seats according to the needs of the user, the connected light bar can adjust the positions of adjacent lighting units in the horizontal plane through the rotation between the upper circular rotating wheel and the lower circular rotating wheel, the light curtain array has high flexibility, and the whole light bar can be bent at will in the plane to form various array shapes, so that the light curtain array is formed.
In the above technical scheme, the control circuit of the single lighting unit comprises a singlechip with the model of STC15F104E, an input end connected with the micro USB female socket and an output end connected with the micro USB male port, the control circuit is arranged in the lighting main body, the input end comprises a VCC power supply gear, a brightness adjustment upshift, a brightness adjustment downshift and a GND grounding gear, the brightness adjustment upshift and the brightness adjustment downshift of the input end are respectively connected with two I/O ports of P3.0 and P3.1 of the singlechip, the P3.2 port of the singlechip outputs PWM signals, a triode is connected between the P3.2 port of the singlechip and the Led patch, and the output end also comprises the VCC power supply gear, the brightness adjustment upshift, the brightness adjustment downshift and the GND grounding gear which are connected with the corresponding ports of the input end one by one; the whole chain LED lamp strip is provided with a total control circuit, the control circuit comprises a control interface, a gear 1 of the control interface is connected with a power supply, the gear 1 is used as a total brake, gears 2 and 3 are connected with a brightness adjustment upshift and a brightness adjustment downshift of an input end of a single lighting unit, the gear 2 is provided with a gear shifting button, and the gear 4 is a grounding end.
The invention also provides a control method of the chained LED lamp bar, which sets 1-10 gears to control the brightness level of the LED paster, sets a timer, runs for a while after the timer is started and stopped, compares the accumulated time T of the timer with the brightness level N of the LED paster once every 100 microseconds, and concretely comprises the following steps:
(1) Initializing the brightness of the Led patch, and setting the brightness level N to be a second grade, namely N=2, so that the Led patch presents a bright state;
(2) Detecting keys, namely if a "+" gear is pressed, adding 1 to N after each pressing, and then executing the step (3); if the "-" gear is pressed, reducing N by 1 every time the "-" gear is pressed, and then executing the step (4);
(3) Judging whether the brightness level N of the Led patch exceeds the maximum level, namely whether N is larger than 10, if not, executing the step (5); if the judgment result is yes, executing the step (6);
(4) Judging whether the brightness level N of the Led patch is lower than the minimum level, namely, whether N is lower than 1, if not, executing the step (5); if the judgment result is yes, executing the step (7);
(5) Detecting whether the timer time T is smaller than or equal to the brightness level N of the Led patch every 100 microseconds, if so, continuously performing detection and judgment until the judgment result is negative, wherein PWM=1; if the judgment result is negative, PWM=0; when comparing with the brightness level of the Led patch, the timing unit of the timer is seconds;
(6) The Led patch is kept in the brightest state, and the brightness is not increased continuously;
(7) The Led patch is kept in the darkest state, and the brightness is not reduced continuously;
(8) Judging whether the time T of the timer is equal to 10 seconds, and if so, zeroing the time T; if the judgment result is negative, the timer will continue to run, and the timer time T continues to accumulate.
Compared with the existing light supplementing equipment, the chain LED light bar and the control method thereof have the following advantages:
(1) The chained LED lamp strip has the advantages of low manufacturing cost, simple charging, portability, energy conservation, environmental protection, simple light curtain array combination and good flexibility;
(2) The light curtain array formed by the chained LED lamp strips is simple in operation and high in efficiency, and the light supplementing equipment can be formed by only combining the chained LED lamp strips with the lampshade and soft light cloth;
(3) The light curtain array formed by the chained LED light bars enables the light distribution to be more varied, so that the light efficiency is more diversified, the chained LED light bars can be used as auxiliary light lamps and environment light lamps besides the main light, and the space sense expression and the picture atmosphere creation are facilitated.
Drawings
Fig. 1 is a schematic view of the structure of a single lighting unit of the present invention.
FIG. 2 is a schematic diagram of a plurality of lighting units connected in a light bar according to the present invention.
Fig. 3 is a schematic view of the internal structure of the light-emitting body of the present invention.
FIG. 4 is a schematic view of the structure of the upper circular runner and the lower circular runner in the present invention.
Fig. 5 is a control circuit of a single lighting unit in the present invention.
Fig. 6 is a general control circuit of the entire chain Led light bar of the present invention.
FIG. 7 is a flow chart of a control method in the present invention.
Wherein: 1. micro USB female seat, 2 micro USB male port, 3 upper circular runner, 4 lower circular runner, 5 light-homogenizing lens, 6 soft light plate, 7 cone-shaped light-homogenizing barrel, 8 Led patch, 9 universal rubber pad.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1 to 4, the embodiment of the invention provides a chained Led light bar, which is formed by connecting a plurality of lighting units, wherein each lighting unit comprises a light-emitting main body, an upper circular rotating wheel 3, a lower circular rotating wheel 4, micro USB male ports 2 and micro USB female seats 1, the upper circular rotating wheel 3 and the lower circular rotating wheel 4 are respectively sleeved on the light-emitting main body in an upper layer and a lower layer, the micro USB male ports 2 are fixed on the upper circular rotating wheel 3, the micro USB female seats 1 are fixed on the lower circular rotating wheel 4, and Led patches 8 are arranged in the light-emitting main body.
In this embodiment, the light-emitting main body includes a circular bottom plate, a Led patch 8, a tapered light-homogenizing barrel 7, a soft light plate 6, and a light-homogenizing lens 5, wherein the Led patch 8 is disposed in the center of the circular bottom plate, the small opening end of the tapered light-homogenizing barrel 7 is aligned with the Led patch 8, the large opening end of the tapered light-homogenizing barrel 7 is aligned with the soft light plate 6, and the light-homogenizing lens 5 is disposed above the soft light plate 6.
The bottom of the circular bottom plate is embedded with a Fixate Gel Pads universal rubber pad 9 of the American Fixate, and the rubber pad can firmly attach the lighting unit to objects made of various materials by utilizing the acting force among molecules of the objects, so that the light bar cannot fall off or loose to influence the lighting effect.
Further, the soft light plate is round, has a diameter of 2.5cm, is formed by superposing 2-3 layers of soft light paper, and is made of pure white parchment paper. The soft light plate has the following functions: after the light is emitted from the led patch, the uneven light is integrated into uniform and soft light through the diffuse reflection principle, so that the problem that the light projected by the traditional lighting equipment is darker when the traditional lighting equipment is used is solved.
Further, the bottom surface of the dodging lens is circular, the diameter of the bottom surface is 3cm, the whole is similar to a plano-convex lens, the center is thicker, the edge is thinner, and colorless and transparent optical resin is selected as a convex lens material. The dodging lens has the following functions: the light which is scattered by the soft light plate is concentrated and uniform, so that the finally projected light can form uniform, soft and parallel light beams.
In this embodiment, the radius of the inner diameter of the upper circular runner is 15.125mm, the radius of the inner diameter of the lower circular runner is 14.875mm, and the upper runner is slightly larger than the lower runner, so as to provide a space for the outer shell of the micro USB female socket and aesthetic feeling of the structure. The contact surface of the upper circular rotating wheel and the lower circular rotating wheel is provided with a gear with 180 teeth, and a spring used for tightly contacting the upper circular rotating wheel and the lower circular rotating wheel is arranged above the upper circular rotating wheel. When the rotating wheels are rotated, the two rotating wheels are respectively pulled up and down, so that the gears are separated and are not meshed, the rotating wheels can freely rotate, and when the combination shape of the lamp beads is determined, the rotating wheels are closed. The spring above the upper round rotating wheel compresses the two rotating wheels, the gears on the contact surfaces of the two rotating wheels are meshed, the friction force is increased, the rotating wheels cannot rotate, the rotating wheels are locked, and the lamp bead combination is fixed, so that the lamp bead combination is difficult to deform.
Further, a small area is reserved on the micro USB female seat interface, a magnetic adhesive tape produced by a 3M company is adhered to the micro USB female seat interface, the thickness of the adhesive tape is only 0.5mm, two sides of the adhesive tape are adhered to a blank area on the female seat, and one side of the adhesive tape is provided with a magnetic force to absorb the male opening and the blank area after the male opening is connected with the female seat, so that the connection between the lighting units is more stable.
In this embodiment, as shown in fig. 5, the control circuit of the single lighting unit includes a single chip microcomputer with a model STC15F104E, an input end connected to the micro USB socket, and an output end connected to the micro USB male port, and the control circuit is disposed in the light emitting body. The input end comprises a VCC power supply gear, a brightness adjustment upshift gear, a brightness adjustment downshift gear and a GND grounding gear, the brightness adjustment upshift gear and the brightness adjustment downshift gear of the input end are respectively connected with two I/O ports P3.0 and P3.1 of the singlechip, a triode is connected between a P3.2 port of the singlechip and a Led patch, the LED flicker is controlled by opening and closing the triode, a PWM signal is output by the P3.2 port of the singlechip, the brightness of the LED is controlled by adjusting the duty ratio, and the output end also comprises the VCC power supply gear, the brightness adjustment upshift gear, the brightness adjustment downshift gear and the GND grounding gear which are connected with corresponding ports of the input end one by one.
As shown in FIG. 6, the whole chain LED light bar is provided with a total control circuit, the total control circuit comprises a control interface, a gear 4 of the control interface is a grounding end, a gear 1 is connected with a power supply, the power supply uses 18650 lithium batteries produced by Shenzhen Vol Marte battery company, the gear 1 is used as a total brake, the on-off of the whole light bar is completed through the total control circuit, and the safety of the system is ensured. The gear 2 and 3 are connected with the brightness adjustment upshift and the brightness adjustment downshift of the input end of the single lighting unit, the gear 2 is provided with a gear shift button, the control circuit transmits a control signal to the input end of the single lighting unit through the operation of the button, and the brightness adjustment upshift and the brightness adjustment downshift of the input end receive the signal from the control circuit and transmit the signal to the singlechip program, and the duty ratio of the PWM waveform is adjusted through the program, so that the Led multi-gear brightness is realized. The output end of each single lighting unit is connected with the input end of the adjacent lighting unit to transmit the signal of the control circuit.
In the use, as shown in fig. 2, the user connects a plurality of small lighting units into a light bar through the micro USB male port 2 and the micro USB female seat 1 according to the needs of the user, the connected light bar can adjust the positions of adjacent lighting units in the horizontal plane through the rotation between the upper circular rotating wheel 3 and the lower circular rotating wheel 4, the light curtain has high flexibility, and the whole light bar can be bent at will in the plane to form various array shapes so as to form a light curtain array. The length of the light bar can also be completely determined by how much of the lighting unit is. When the user connects the light bar, the micro USB female seat at the tail end of the light bar can be connected with the total control circuit, so that power is supplied to the light bar, and the brightness of the light bar is controlled. After the Led patch 8 is electrified to lighten, the light is firstly subjected to primary dodging through the conical dodging barrel 7, then the light further passes through the soft light plate 6 to soften the light, and finally the light is converted into parallel light through the dodging lens 5 to be emitted.
As shown in fig. 7, the present embodiment further provides a control method of the chained Led light bar, where 1 to 10 total gear positions are set to control the brightness level of the Led patch, a timer is set, and the timer is operated for a long time after being started and interrupted, and the timer compares the accumulated time T of the timer with the brightness level N of the Led patch every 100 microseconds, and specifically the method includes the following steps:
(1) Initializing the brightness of the Led patch, and setting the brightness level N to be a second grade, namely N=2, so that the Led patch presents a bright state;
(2) Detecting keys, namely if a "+" gear is pressed, adding 1 to N after each pressing, and then executing the step (3); if the "-" gear is pressed, reducing N by 1 every time the "-" gear is pressed, and then executing the step (4);
(3) Judging whether the brightness level N of the Led patch exceeds the maximum level, namely whether N is larger than 10, if not, executing the step (5); if the judgment result is yes, executing the step (6);
(4) Judging whether the brightness level N of the Led patch is lower than the minimum level, namely, whether N is lower than 1, if not, executing the step (5); if the judgment result is yes, executing the step (7);
(5) Detecting whether the timer time T is smaller than or equal to the brightness level N of the Led patch every 100 microseconds, if so, continuously performing detection and judgment until the judgment result is negative, wherein PWM=1; if the judgment result is negative, PWM=0; when comparing with the brightness level of the Led patch, the timing unit of the timer is seconds;
(6) The Led patch is kept in the brightest state, and the brightness is not increased continuously;
(7) The Led patch is kept in the darkest state, and the brightness is not reduced continuously;
(8) Judging whether the time T of the timer is equal to 10 seconds, and if so, zeroing the time T; if the judgment result is negative, the timer will continue to run, and the timer time T continues to accumulate.
In practical application, the light bars formed by connecting the plurality of lighting units can be combined into any light curtain array, and the real restoration of the ambient light, the emphasis and the highlighting of important elements and the emotional expression of the works are finished aiming at different light source characteristics. The specific light distribution scheme is as follows:
1. light distribution for indoor exhibits
1) Two-dimensional exhibit light distribution
Step one: the method comprises the steps that a plurality of lighting units are connected into a light bar through micro USB male ports and micro USB female seats, the connected light bar adjusts the positions of adjacent lighting units in a horizontal plane through rotation between an upper circular rotating wheel and a lower circular rotating wheel, and 4-9 lighting units form a planar light curtain array;
step two: because the exhibit is to be protected, the light is softened by adding a lampshade or soft cloth in front of the light curtain array, the lamps are supported on the front surface or other darker side surfaces of the exhibit by using a manual or simple bracket, and a light source is started to form a bright main light and environment light;
step three: when the side position light supplementing is carried out, a linear light curtain array is formed by using 1-3 lighting units, the lamp is supported by using a manual or simple bracket, and the side position light supplementing is formed near the exhibited article in the 45-degree downward direction.
2) Three-dimensional exhibit light distribution
Step one: forming a single point light source by using a single lighting unit according to the size of an exhibit, or connecting a plurality of lighting units into a light bar by using a micro USB male port and a micro USB female seat, adjusting the positions of adjacent lighting units in a horizontal plane by the connected light bar through rotation between an upper circular rotating wheel and a lower circular rotating wheel, and forming a planar light curtain array by 2-8 lighting units;
step two: the method is characterized in that a horizontal plane and a vertical plane which are in the center of a shot object are used as references for positioning, a support is arranged on the front surface, the back surface and other darker side surfaces of the exhibit, lamps are arranged on the supports, main light source points are hidden in a mode of adding a lampshade and soft light cloth, and main light, auxiliary light, backlight, spot light, top light and the like around the exhibit are formed.
2. Light supplementing for outdoor shooting
Step one: in the darker part of outdoor shooting, connecting a plurality of lighting units into a light bar through a micro USB male port and a micro USB female seat according to requirements, adjusting the positions of adjacent lighting units in a horizontal plane through rotation between an upper circular rotating wheel and a lower circular rotating wheel by the connected light bar, and forming a planar light curtain array by 3-10 lighting units;
step two: the lamp is freely erected on a scene with darker near, and is generally used for polishing on a straight surface and obliquely distributing light at 45 degrees, and a lampshade and a soft light are not compulsorily added to form main light, ambient light and concentrated light, so that light supplementing is carried out on the scene.
What is not described in detail in this specification is prior art known to those skilled in the art.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims (3)

1. A chain LED lamp strip, characterized by: the LED illuminating lamp is formed by connecting a plurality of illuminating units, each illuminating unit comprises a luminous main body, an upper circular rotating wheel, a lower circular rotating wheel, a micro USB male port and a micro USB female seat, the upper circular rotating wheel and the lower circular rotating wheel are divided into an upper layer and a lower layer which are sleeved on the luminous main body, a gear with 180 teeth is arranged on the contact surface of the upper circular rotating wheel and the lower circular rotating wheel, a spring used for tightly contacting the upper circular rotating wheel and the lower circular rotating wheel is arranged above the upper circular rotating wheel, the micro USB male port is fixed on the upper circular rotating wheel, the micro USB female seat is fixed on the lower circular rotating wheel, the luminous main body comprises a circular bottom plate, a Led patch, a conical dodging barrel, a soft light plate and a dodging lens, the Led patch is arranged in the center of the circular bottom plate, the small port end of the conical dodging barrel is opposite to the Led patch, the big port end of the conical dodging barrel is opposite to the soft light plate, and a dodging lens is arranged above the soft light plate, and a universal rubber pad is embedded at the bottom of the circular bottom plate.
2. The chain Led light bar of claim 1, wherein: the control circuit of the single lighting unit comprises a singlechip with the model STC15F104E, an input end connected with a micro USB female seat and an output end connected with a micro USB male port, the control circuit is arranged in the lighting main body, the input end comprises a VCC power supply gear, a brightness adjustment upshift, a brightness adjustment downshift and a GND grounding gear, the brightness adjustment upshift and the brightness adjustment downshift of the input end are respectively connected with two I/O ports P3.0 and P3.1 of the singlechip, the P3.2 port of the singlechip outputs PWM signals, a triode is connected between the P3.2 port of the singlechip and the Led patch, and the output end also comprises the VCC power supply gear, the brightness adjustment upshift and the brightness adjustment downshift and the GND grounding gear which are connected with corresponding ports of the input end one by one; the whole chain LED lamp strip is provided with a total control circuit, the control circuit comprises a control interface, a gear 1 of the control interface is connected with a power supply, the gear 1 is used as a total brake, gears 2 and 3 are connected with a brightness adjustment upshift and a brightness adjustment downshift of an input end of a single lighting unit, the gear 2 is provided with a gear shifting button, and the gear 4 is a grounding end.
3. A light curtain array, characterized by: the chain Led light bar according to any one of claims 1 or 2 is comprised, and the connected light bar is formed into various array shapes by adjusting the positions of adjacent lighting units in a horizontal plane through rotation between an upper circular rotating wheel and a lower circular rotating wheel, thereby forming a light curtain array.
CN201711052924.6A 2017-10-31 2017-10-31 Chained LED lamp strip and control method thereof Active CN107740946B (en)

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CN107740946B true CN107740946B (en) 2023-09-12

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CN103167691A (en) * 2013-03-04 2013-06-19 江南大学 Light emitting diode (LED) driving power supply and dimming system
CN105792456A (en) * 2014-12-15 2016-07-20 美的集团股份有限公司 Light emitting diode (LED) driving circuit and LED brightness control method for household appliance display device
CN107120567A (en) * 2017-05-17 2017-09-01 深圳怡化电脑股份有限公司 Plate illumination system and financial self-service equipment before one kind

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120217882A1 (en) * 2011-02-28 2012-08-30 Chon Meng Wong LED lighting system
CN103167691A (en) * 2013-03-04 2013-06-19 江南大学 Light emitting diode (LED) driving power supply and dimming system
CN105792456A (en) * 2014-12-15 2016-07-20 美的集团股份有限公司 Light emitting diode (LED) driving circuit and LED brightness control method for household appliance display device
CN107120567A (en) * 2017-05-17 2017-09-01 深圳怡化电脑股份有限公司 Plate illumination system and financial self-service equipment before one kind

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