CN205560630U

CN205560630U - Luminous leaded light strip for accessory

Info

Publication number: CN205560630U
Application number: CN201620368747.7U
Authority: CN
Inventors: 孙长敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-27
Filing date: 2016-04-27
Publication date: 2016-09-07
Anticipated expiration: 2026-04-27

Abstract

The utility model discloses a modify to the further of current leaded light strip technique, the fungible has FPC leaded light strip now. Concrete scheme does: a luminous leaded light strip for accessory, includes substrate, printed circuit and light emitting component, wherein: the anodal of the last power of printed circuit is connected in light emitting component 1's anodal interface from the wiring end, later connects light emitting component 2, light emitting component 3 to light emitting component n respectively, is the power negative pole connected from the wiring end and is connected light emitting component n respectively in luminous original paper n's cathode interface 1, light emitting component n 2 to light emitting component 1, each light emitting component parallel connection. This method not only adopts printed circuit to accomplish current -limiting resistor, has reduced manufacturing cost, the negative pole line length is the same in addition through making every light emitting component go up anodal line length simultaneously, realizes that every light emitting component's luminance matches.

Description

A kind of lighting fitting light-strip

Technical field

This utility model belongs to electronic product accessory field, particularly relates to a kind of based on printed circuit Light accessory light-strip.

Background technology

Nowadays, many electronic products all can configure luminous button to realize night and use and be attractive in appearance etc. Multiple purpose, such as the illuminated keyboard of configuration on part notebook computer.Existing luminous button be by Guide-lighting key emits, and light guide plate, these three big parts of light-strip form and realize key light emitting, current institute The light-strip used is usually note and has filled light emitting diode the FPC plate of equipped current-limiting resistance, its Circuit theory is as it is shown in figure 1, include: FPC, several light-emitting component and the limit of respective numbers Leakage resistance R, user can regulate light-emitting component and corresponding current-limiting resistance according to the needs of product Quantity and the size of current-limiting resistance.

Summary of the invention

This utility model is the further modification to existing light-strip technology, alternative existing FPC Light-strip.The scheme realizing technical purpose described in the utility model is: a kind of lighting fitting is guide-lighting Bar, including base material, printed circuit and light-emitting component, wherein: the positive pole of printed circuit power source is from wiring Bring out to send out and connect light-emitting component 1, light-emitting component 2 to light-emitting component n respectively；Power cathode brings out from wiring Send out and connect light-emitting component n, light-emitting component n-1 respectively to light-emitting component 1；Wherein, printed circuit self Resistance meets the use requirement of light-emitting component.

Preferably, positive source terminals are connected to the anode interface of light-emitting component 1, power cathode wiring End is connected to the negative pole interface of luminous original paper n, and each light-emitting component is connected in parallel；And make every light-emitting component Upper positive pole line length is all identical plus negative pole line length so that the impedance loop phase of every light-emitting component With, also it is ensured that the brightness of every light-emitting component is suitable.

Preferably, light-emitting component is LED.

The mode of this utility model employing conductive circuit reaches the former of the effect of FPC circuit Reason is:

1. printed circuit itself has a constant impedance, can use certain method for designing and calculate Substitute the current-limiting resistance used by former FPC, thus reduce production technology and production cost.

2. use the connected mode that this utility model improves, it is possible to achieve VCC R2=GND R2 ..., VCC Rn-1=GND Rn-1, VCC Rn=GND Rn, so that each luminescence The total resistance in loop of element is equal.

3., during printed circuit, need to calculate VCC R1+GND R1+VCC R2 (or GND R2)+VCC The sum of Rn-1 (or GND Rn-1)+VCC Rn (or GND Rn), it is ensured that its resistance is at the use model of LED In enclosing.

This utility model has the advantage that

1, use printed circuit to complete current-limiting resistance, decrease production cost.

2, may insure that every LEDs line length is identical by specific connected mode, thus limit Leakage resistance is identical, it is achieved that LED etc. bright.

Accompanying drawing explanation

Fig. 1 existing FPC light-strip circuit theory diagrams；

Fig. 2 this utility model light-strip connection diagram；

Wherein: 11,12 is circuit negative pole, 21,22 is circuit anode, and 30 is printed circuit, 41, 42 is LED, and 50 is base material；

Fig. 3 this utility model light-strip circuit theory diagrams.

Specific embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with attached Figure, further describes this utility model.Only should be appreciated that specific embodiment described herein Only in order to explain this utility model, it is not used to limit this utility model.

According to an embodiment of the present utility model, a kind of lighting fitting light-strip, including base material, Printed circuit and single one group, be provided with n piece of LED of n group, the printed circuit of this light-strip and LE altogether The circuit catenation principle of D is as shown in Figure 2.In circuit diagram, on printed circuit, VCC end brings out from wiring Send out and connect LED1, LED2 to LEDn respectively；GND end connect respectively from terminals LEDn, LEDn-1 to LED1；Wherein, the resistance of printed circuit self meets the use requirement of LED.Wherein, The terminals of VCC are connected to the anode interface of LED1, and GND terminals are connected to the negative pole of LEDn Interface, each LED is connected in parallel；And make positive pole line length on every LEDs add that negative pole line length is all phase With, it is achieved VCC R2=GND R2 ..., VCC Rn-1=GND Rn-1, VCC Rn= GND Rn so that the impedance loop of every LEDs is identical, also it is ensured that every LEDs bright Degree is quite.And make VCC R1+GND R1+VCC R2 (or GND R2)+VCC Rn-1 (or GND Rn-1)+VCC Rn's (or GND Rn) and in the range of LED.

According to an embodiment of the present utility model, as it is shown on figure 3, a kind of lighting fitting light-strip, Including base material 50, printed circuit 30 and be placed with totally 10 pieces of LED of 5 groups the most in groups.Print The cathode circuit of brush circuit 30 includes cathode circuit 21 and 22, and cathode circuit 21 and 22 is in LED41 Anode interface front end merge into LED cathode circuit, LED cathode circuit connects 10 pieces of LED respectively Anode interface.The cathode traces of printed circuit 30 includes cathode traces 11 and 12, cathode traces 11 Merging into LED cathode traces with 12 in the negative pole interface front end of LED42, LED cathode traces divides Lian Jie the negative pole interface of 10 pieces of LED.It is corresponding that the line length of printed circuit needs to meet every LEDs Positive bus length is all identical plus the long sum of negative bus so that the loop resistance of every LEDs Anti-identical, also it is ensured that the brightness of every LEDs is suitable；And meet impedance loop at LED Range in.

According to an embodiment of the present utility model, LED can many pieces place in groups, often many between group Piece LED uses and is connected in parallel, and the positive bus that the line length of printed circuit meets every LEDs corresponding is long It is all identical plus the long sum of negative bus, and meets the impedance loop range at LED In.

According to an embodiment of the present utility model, LED can many pieces place in groups, often many between group Piece LED uses and is connected in series, and the positive bus that the line length of printed circuit meets every LEDs corresponding is long It is all identical plus the long sum of negative bus, and meets the impedance loop range at LED In.Now, the applied voltage of circuit is the use voltage sum of each group of each LED connected.

This utility model has the advantage that

It should be noted that and understand, without departing from the spirit and scope required by this utility model claim In the case of, it is possible to this utility model of foregoing detailed description is made various modifications and improvements.Therefore, The scope of claimed technical scheme is not limited by given any specific exemplary teachings.

Claims

1. a lighting fitting light-strip, including base material, printed circuit and light-emitting component, its feature exists In, the positive pole of printed circuit power source connects light-emitting component 1, light-emitting component 2 respectively from terminals To light-emitting component n；Power cathode connect respectively from terminals light-emitting component n, light-emitting component n-1 to Light-emitting component 1；Wherein, the resistance of printed circuit self meets the use requirement of light-emitting component.

Lighting fitting light-strip the most according to claim 1, it is characterised in that positive source wiring End is connected to the anode interface of light-emitting component 1, and power cathode terminals are connected to the negative pole of luminous original paper n Interface, each light-emitting component is connected in parallel；And make positive pole line length on every light-emitting component add negative pole line length It is all identical so that the impedance loop of every light-emitting component is identical.

3. according to the arbitrary described lighting fitting light-strip of claim 1 or 2, it is characterised in that described Light-emitting component is the LED being arranged in groups, and often organizes at least 1 piece of LED.