CN2896782Y

CN2896782Y - Luminating device

Info

Publication number: CN2896782Y
Application number: CNU2006201130906U
Authority: CN
Inventors: 刘运富; 萧家新
Original assignee: JIANSHENG FACTORY CO Ltd
Current assignee: Jiansheng Industry Co., Ltd.
Priority date: 2006-04-25
Filing date: 2006-04-25
Publication date: 2007-05-02
Anticipated expiration: 2016-04-25

Abstract

The utility model relates to a luminous device, comprising a primary interface, a secondary interface and a plurality of luminous units, wherein the said luminous units each consist of a head end, a tail end and a plurality of parallel luminous elements in electrical connection with the said head end and tail end; the luminous units are in serial connection end-to-end between the primary interface and the secondary interface. Users can connect the primary interface and the secondary interface to power system in vehicles. Each of the said luminous units comprises manifold luminous elements, making it very elastic and convenient to increase the number of luminous elements. The open circuit and failure of any one luminous element does not affect adjacent luminous elements, and a series loop can still be formed between the primary interface and the secondary interface, thus the utility model can prevent large decrease in brightness caused by failure of any one luminous element.

Description

Light-emitting device

Technical field

The utility model relates to a kind of light-emitting device, particularly relates to a kind of light-emitting device that is formed by connecting by a plurality of light-emitting components.

Background technology

In the past in the light-emitting device of using onboard, usually all be to adopt single direct current bulb to be used as light-emitting component, brightness raising, the price of now along with light-emitting diode (LED) reduces with universal gradually, so it is to adopt light-emitting diode to be used as light-emitting component fully that many light-emitting devices are arranged now, whereby to reach the application target that the life-span is long, save energy.

As shown in Figure 1, for the light-emitting diode that is applied in an automobile-used stop lamp 100 at present connects signal, observe the connected mode of these light-emitting diodes and can realize it is a simple series loop, and in this series loop, have a current-limiting resistance R to impel current stabilization, and because general power supply on vehicle V _CcBe about about 13.5V, and the operating voltage of general light-emitting diode is about 2.6V, so situation as shown in Figure 1, the maximum serial number of light-emitting diode is 5, and (2.6V * 5=13V＜13.5V), this is the limit in the unitary series of operations loop just.

As Fig. 1, shown in 2, because under the running of 5 light-emitting diodes, be applied to the stop lamp of high brightness, still have the situation of luminance shortage during indicator, therefore generally speaking, all also can solve (shown in Fig. 1 imaginary line) in the mode that parallel connection increases light-emitting diode, whereby to reach required brightness, yet, its brightness of the light-emitting diode that different vendor made all has nothing in common with each other, so be not all to need 5 identical light-emitting diodes in parallel as shown in Figure 1 to use, but might only need 2 in parallel, after perhaps needing 5 in parallel 2 in parallel again, therefore can produce quantity in parallel and not be 5 times framework in parallel, at this moment, owing on the individual path that is not 5 light-emitting diodes series connection, be to connect identical power supply on vehicle 13.5V, and has a current-limiting resistance R equally, so power supply on vehicle is except the operating voltage of supply light-emitting diode, extra voltage can be increased on this current-limiting resistance R, so form the power consumption of waste.

In addition, increase light-emitting diode with parallel way and also increased the electric current demand, so observing the characteristic of general battery shown in Figure 2 can find, when the electric current increase in demand, also drive the service time of battery in minimizing, therefore not only there is the power consumption of above-mentioned waste to produce, also can makes the time decreased that battery uses, and influence the need for electricity of other vehicular equipment.

And the more important thing is, aspect connecting framework, can know in the light-emitting diode of finding each group series connection, as long as wherein damage open circuit is arranged, then will cause whole group all can't be lighted luminous, so that it is very huge to influence brightness, if single light-emitting diode damage arranged, will have a strong impact on the traffic safety of vehicle.

The utility model content

Therefore, the purpose of this utility model is to be to provide a kind of quantity that can effectively increase light-emitting component, can effectively use power supply, and can reduce the light-emitting device that brightness reduces generation suddenly.

So the utility model light-emitting device comprises one first connectivity port, one second connectivity port and a plurality of luminescence unit.

Described luminescence unit respectively comprise a head end, a tail end and a plurality ofly be electrically connected on this, the tail two ends are light-emitting component in parallel, described luminescence unit is end to end to be series between this first and second connectivity port.

Light-emitting device described in the utility model also comprises a boosting unit that can be connected in a power supply, and this boosting unit is to be electrically connected on this first and second connectivity port to form a luminous loop.

Light-emitting device described in the utility model, this boosting unit comprise always stream translation module, a boost inductance, diode and a filter capacitor; This DC conversion modules has a voltage regulator, one comparator, one oscillator, one with the door, one flip-flop, one the first transistor and a transistor seconds, the output of this voltage regulator is an input that is connected in this comparator, the output of this comparator and oscillator be connected to this with the door two inputs, should be two inputs that are connected to this flip-flop with the output of door and the output of aforementioned oscillator, the emitter-base bandgap grading end of this first transistor is the base terminal that is connected in this transistor seconds, and the output of this flip-flop is the base terminal that is connected in this first transistor; This boost inductance is to be connected in this DC conversion modules, the one end is to link to each other with the collector terminal of this transistor seconds, its other end is to link to each other with the collector terminal of this first transistor and the electric current restriction test side of this oscillator simultaneously, and wherein the collector terminal of this first transistor also is connected to this power supply; The anode tap of this diode is the collector terminal that is connected in this transistor seconds, and cathode terminal is to be connected in this first connectivity port; And the two ends of this filter capacitor are to be connected to this first connectivity port and second connectivity port.

Whereby, the user just can with this first, two connectivity ports are connected to power supply on vehicle, this moment since respectively this luminescence unit include a plurality of light-emitting components, and the light-emitting component quantity in each luminescence unit can rough difference, so quite elasticity is easy in the connection that increases light-emitting component quantity, in addition because described light-emitting component is to be to be connected in parallel, when wherein a damage is opened a way, adjacent light-emitting component still can be lighted, and still can form be series at this first, loop between two connectivity ports, so this novel situation that can avoid causing brightness significantly to reduce because of single luminescent device breakdown takes place.

Description of drawings

Fig. 1 is a schematic diagram, and automobile-used stop lamp in the past is described;

Fig. 2 is a schematic diagram, and the relation of current sinking value and service time is described when general battery uses;

Fig. 3-1 and Fig. 3 the-the 2nd, and schematic diagram illustrates a preferred embodiment of this novel light-emitting device.

Embodiment

Below in conjunction with drawings and Examples the utility model is elaborated.

Shown in Fig. 3-1 and Fig. 3-2, a preferred embodiment of the utility model light-emitting device comprises one first connectivity port, 20 (V _o), one second connectivity port 30 (GND), a plurality of luminescence unit 40 and a boosting unit 50.

Described luminescence unit 40 respectively comprise a head end 41, a tail end 42 and a plurality ofly be electrically connected on this, tail two

ends

41,42 are light-emitting component 43 in parallel, described light-emitting component 43 is light-emitting diode (LED), and described luminescence unit 40 is end to end to be series between this first and

second connectivity port

20,30.

This boosting unit 50 is the power supply V that are connected on the car _Cc, and be to be electrically connected on this first and

second connectivity port

20,30 to form a luminous loop, this boosting unit 50 can be with this power supply V in this preferred embodiment _CcVoltage (about 13.5V) is promoted to 30V output, and comprises stream translation module 51, a boost inductance L1, diode D1, a switching transistor Q3, a frequency capacitor C 1 and a filter capacitor C3 always.

This DC conversion modules 51 is that to adopt model be 34063 integrated circuit (IC) in this preferred embodiment, and have a voltage regulator 511, a comparator 512, an oscillator 513, one with 514, one flip-flop 515, a first transistor Q1 and a transistor seconds Q2.

The output of this voltage regulator 511 is inputs that are connected in this comparator 512.

The output of this comparator 512 and oscillator 513 is to be connected to this and two inputs of door 514.

One charge-discharge end Cr of this oscillator 513 can constantly do charge and discharge to the frequency capacitor C 1 of outside to decide electric current, provides output so just can obtain oscillator signal, and electric current restriction test side I _PKBe that the voltage that is used to detect between resistance R 1, the R2 is finished limitation function, according to the specification demonstration of this DC conversion modules 51, as this electric current restriction test side I _PKWhen detected magnitude of voltage exceeded 300mV, then this oscillator 513 can quicken the charge and discharge time to this frequency capacitor C 1, whereby reducing the ON time of charging interval and this first and second transistor Q1, Q2, and reached the function of protection.

Should be two inputs (S, R) that are connected to this flip-flop 515 with the output of door 514 and the output of aforementioned oscillator 513, the emitter-base bandgap grading end of this first transistor Q1 is the base terminal that is connected in this transistor seconds Q2, and the output of this flip-flop 515 is the base terminals that are connected in this first transistor Q1.

This boost inductance L1 is connected in this DC conversion modules 51, so that being provided, energy storage uses, the one end is to link to each other with the collector terminal of this transistor seconds Q2, and its other end is simultaneously with the collector terminal of this first transistor Q1 and through the electric current restriction test side I of resistance R 2 with this oscillator 513 _PKLink to each other, wherein the collector terminal of this first transistor Q1 also is connected to this power supply V through resistance R 1, R2 _Cc

The anode tap of this diode D1 is the collector terminal that is connected in this transistor seconds Q2, and its cathode terminal is to be connected in this first connectivity port 20.

The two ends of this filter capacitor C3 are to be connected to this first connectivity port 20 and second connectivity port 30.

Whereby, the user just can see through this boosting unit 50 and obtain higher operating voltage, limited and the situation more multiple optical diode of can't connecting takes place to solve voltage in the series loop in the past, and this moment since respectively this luminescence unit 40 include a plurality of light-emitting components 43, and the light-emitting component quantity in each luminescence unit 40 can rough difference, can be according to two or three in parallel of actual demand, so quite elasticity is easy in the connection that increases light-emitting component 43 quantity, no matter be to need to increase by one, two or three light-emitting diodes are to increase overall brightness, all only need to adjust the output services voltage of this boosting unit 50, just can dispose easily and finish, and can effectively utilize power supply on the car, reach the actual effect of avoiding empty power consumption power.

In addition, because described light-emitting component 43 is to be to be connected in parallel, so when wherein having one to damage or open a way, adjacent light-emitting component 43 still can be lighted, and still can form be series at this first, two connectivity ports 20, loop between 30, so, this the novel situation that can avoid causing brightness significantly to reduce because single light-emitting component 43 damages takes place, for for motor vehicle stop lamp, various light fixture such as indicator, can reduce the risk that whole luminosity descends suddenly far and away, increased the service time of product, and promoted the safety of driving, it is the light-emitting device that more meets industry demand on the market that automobile-used lamp is provided.

Claims

1. a light-emitting device is characterized in that,

This light-emitting device comprises one first connectivity port, one second connectivity port and a plurality of luminescence unit;

Respectively this luminescence unit include a head end, a tail end and a plurality ofly be electrically connected on this, the tail two ends are light-emitting component in parallel, described luminescence unit is end to end to be series between this first and second connectivity port.

2. light-emitting device according to claim 1 is characterized in that, also comprises a boosting unit that can be connected in a power supply, and this boosting unit is to be electrically connected on this first and second connectivity port to form a luminous loop.

3. light-emitting device according to claim 2 is characterized in that, this boosting unit comprises always stream translation module, a boost inductance, diode and a filter capacitor;

This DC conversion modules has a voltage regulator, one comparator, one oscillator, one with the door, one flip-flop, one the first transistor and a transistor seconds, the output of this voltage regulator is an input that is connected in this comparator, the output of this comparator and oscillator be connected to this with the door two inputs, should be two inputs that are connected to this flip-flop with the output of door and the output of aforementioned oscillator, the emitter-base bandgap grading end of this first transistor is the base terminal that is connected in this transistor seconds, and the output of this flip-flop is the base terminal that is connected in this first transistor;

This boost inductance is to be connected in this DC conversion modules, the one end is to link to each other with the collector terminal of this transistor seconds, its other end is to link to each other with the collector terminal of this first transistor and the electric current restriction test side of this oscillator simultaneously, and wherein the collector terminal of this first transistor also is connected to this power supply;

The anode tap of this diode is the collector terminal that is connected in this transistor seconds, and cathode terminal is to be connected in this first connectivity port; And

The two ends of this filter capacitor are to be connected to this first connectivity port and second connectivity port.