CN203691729U

CN203691729U - LED lamp cooperated with ballast

Info

Publication number: CN203691729U
Application number: CN201320839752.8U
Authority: CN
Inventors: 何伟雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-12-18
Filing date: 2013-12-18
Publication date: 2014-07-02
Anticipated expiration: 2023-12-18
Also published as: WO2015089981A1

Abstract

The utility model discloses an LED lamp cooperated with a ballast. The LED lamp includes a full-bridge rectification circuit (BD), and further includes an LED, the first input end (TBa) of the full-bridge rectification circuit is connected with the first output end (TB1) of the ballast and the second output end (TB2) of the ballast which are respectively connected with the two ends of a first filament of a fluorescent lamp, the second input end (TBb) of the full-bridge rectification circuit is connected with the third output end (TB3) of the ballast and the fourth output end (TB4) of the ballast which are respectively connected with the two ends of a second filament of the fluorescent lamp, and the anode and the cathode of the LED are respectively connected with the positive output end BD1 and the negative output end BD2 of the full-bridge rectification circuit (BD). The LED lamp cooperated with the ballast improves the electric energy utilization rate of an LED light fixture, the service life of the ballast, and the reliability of the LED light fixture; and meanwhile, the cost of the LED light fixture is reduced and the popularization of the LED light fixture is facilitated.

Description

A kind of LED lamp that coordinates ballast

[technical field]

The utility model relates to lighting field, is specifically related to a kind of LED lamp that coordinates ballast.

[background technology]

Fluorescent lamp is as than the incandescent lamp history of light source existing decades of efficient energy-saving more, very ripe already technically, and is worldwide used widely.Along with the development of technology, LED has the luminous efficiency higher than fluorescent lamp, less light decay now.

The patent No. is that the utility model patent of ZL200920195059.5 discloses a kind of fluorescent lamp circuit, power supply, ballast filtration module, rectification module, filtration module and LED load that this circuit connects successively, this ballast filtration module comprises a ballast inductance and the first filter capacitor being connected with inductance, and the each voltage stabilizing circuit being made up of D, D1, D2.The electric current that has additionally consumed ballast output when these stable-pressure device work, declines the utilization ratio of LED light fixture, does not reach due energy-conserving action.

The patent No. is fluorescent tube and the LED daylight lamp circuit that 201220561087.6 utility model patent discloses compatible electronic ballast, this circuit connects filter network, rectification circuit, voltage conversion circuit and LED light source successively, also in parallel voltage decision circuitry, high pressure absorbing circuit on filter network.

All there is circuit complexity in above patent, utilization rate of electrical is low, and ballast long-term work, at pipeline start up by preheating state, has bad impact to ballast and LED light fixture.

[summary of the invention]

In order to overcome the deficiencies in the prior art, the utility model discloses a kind of LED lamp that coordinates ballast, make this LED lamp can directly coordinate the fluorescent lamp circuit with ballast, and can allow LED lamp meet electric current, the voltage request of the normal work of fluorescent lamp ballast.

A kind of LED lamp that coordinates ballast, comprise full bridge rectifier (BD), also comprise LED, the first input end (TBa) of described full bridge rectifier connects with ballast the first output (TB1) and ballast the second output (TB2) for being connected respectively with the first filament two ends of fluorescent lamp respectively, second input (TBb) of described full bridge rectifier connects with ballast the 3rd output (TB3) and the 4th output (TB4) for being connected respectively with the second filament two ends of fluorescent lamp respectively, the anode of described LED is connected with positive output end (BD1) and the negative output terminal (BD2) of described full-bridge rectifier respectively with negative electrode.

In one embodiment, coordinate the LED lamp of ballast can also comprise filter capacitor (C1), the two ends of described filter capacitor are connected with positive output end (BD1) and the negative output terminal (BD2) of described full-bridge rectifier respectively.

In one embodiment, coordinate the LED lamp of ballast can also comprise resistance (R1), the two ends of described resistance are connected with positive output end (BD1) and the negative output terminal (BD2) of described full-bridge rectifier respectively.

In one embodiment, described LED can comprise at least two LED branch roads, and the hot end of each LED branch road and cold end are respectively and between the positive output end of described full-bridge rectifier (BD1) and negative output terminal (BD2).

In one embodiment, each LED branch road can at least comprise two LED of series connection.

The beneficial effects of the utility model are: the LED lamp of this cooperation ballast can directly be connected with the fluorescent lamp circuit with ballast generally using at present, and does not need the complicated circuit as mentioned patent in background technology; By forward voltage, the operating current of correct configuration LED lamp, make ballast skip the pipeline start up by preheating stage, only be operated in normal operating conditions, reduce thus the energy waste bringing due to devices such as increasing voltage transitions, high pressure absorption and voltage stabilizing, utilization rate of electrical, the useful life of ballast and the reliability of LED light fixture of LED light fixture are improved, reduce the cost of LED light fixture simultaneously, be more conducive to the universal of LED light fixture.

Traditional electric ballast or the rough schematic view of Inductive ballast fluorescent lamp as shown in Figure 1, L is the ballast after simplifying, C represents to start starter or capacitor, wherein, ballast after L and C encapsulation has four outputs, for connecting the first output TB1 and the second output TB2 of the first filament of fluorescent lamp, for connecting the 3rd output TB3 and the 4th output TB4 of the second filament of fluorescent lamp, between TB2 and TB3, be connected in series C.

[accompanying drawing explanation]

Fig. 1 is traditional electric ballast or the rough schematic view of Inductive ballast fluorescent lamp;

The circuit theory diagrams of a kind of embodiment of Fig. 2 the utility model.

[embodiment]

Below with reference to accompanying drawing, specific embodiment of the utility model is described in further detail.

As shown in Figure 2, a kind of LED lamp that coordinates ballast, comprise full bridge rectifier BD, at least one LED, in lower dotted line frame, represent existing ballast (comprising electric ballast or Inductive ballast), now ballast is simplified to inductance L, start starter or capacitor and be reduced to C, ballast has four outputs conventionally: connect fluorescent lamp the first filament two ends the first output TB1 and the second output TB2 and be connected the 3rd output TB3 and the 4th output TB4 at the second filament two ends of fluorescent lamp.After the first output TB1 is become to interface TBa with the second output TB2 short circuit, be connected with the first input end of full bridge rectifier, become (or being connected to TB4 by adjustable rotary lampholder) after interface TBb to be connected with the second input of full-bridge circuit with the 4th output TB4 short circuit the 3rd output TB3, the two ends of filter capacitor C1 are connected with positive output end BD1 and the negative output terminal BD2 of full bridge rectifier respectively, the two ends of resistance R 1 are connected with positive output end BD1 and the negative output terminal BD2 of full bridge rectifier respectively, the one LED branch road comprises several LED between LED1 and LED2, the 2nd LED branch road comprises LED3 and LED4, the LED quantity of the 2nd LED branch road is identical with the first branch road, the hot end of the one LED branch road and the 2nd LED branch road is connected with positive output end BD1 and the negative output terminal BD2 of full bridge rectifier respectively with cold end, the 2nd LED branch road and a LED branch circuit parallel connection.

Can regulate according to specific needs the quantity of LED branch road, increase the quantity of LED branch road, the electric current of each LED branch road will reduce, reduce the quantity of LED branch road, the electric current of each LED branch road will increase, therefore,, by the electric current that regulates each LED branch road to flow through, can guarantee that the total current that whole LED lamp can bear is more than or equal to the normal electric current of working of ballast.

According to specific needs, each LED branch road also can regulate the LED quantity of series connection, increase the LED quantity of each branch road, the forward voltage drop of each LED branch road just increases, otherwise the forward voltage drop of each LED branch road just reduces, therefore,, by regulating the voltage swing at each LED branch road two ends, can guarantee that the forward voltage drop of each LED branch road is less than ballast pipeline start up by preheating voltage.

Directly replace after existing fluorescent lamp when this LED lamp, LED conducting is luminous, and ballast does not need, through the pipeline start up by preheating stage, directly to enter normal operating conditions.Therefore, need only the forward voltage drop of LED branch road group lower than the pipeline start up by preheating voltage of ballast, the forward current that LED branch road group can be born is simultaneously more than or equal to the running current of ballast, and LED light fixture can normal stable work.

In addition, filter capacitor C1 and resistance R 1 are optional, and they play output voltage and the filter action of stablizing full bridge rectifier.

By TB1 and TB2 short circuit, by after TB3 and TB4 short circuit, the first input end (TBa end) of full bridge rectifier is connected with the port corresponding with TB1 of original bracket for fluorescent tube, or it is all the same that the port corresponding with TB2 connects, therefore do not spend and differentiate in this group port, on earth which be TB1 which be TB2; In like manner, do not spend yet differentiate which be TB3 which be TB4.Therefore without the current lamp socket of change.

And if there is no multiple LED branch roads, LED lamp possibly cannot meet the current/voltage set point of the normal work of ballast, thereby can cause ballast in pipeline start up by preheating operating state, can produce so unsettled high pressure, thereby LED lamp cannot be worked reliably and with long-term.

Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; can also make some simple deduction or replace, all should be considered as belonging to the utility model by the definite scope of patent protection of submitted to claims.

Claims

1. one kind coordinates the LED lamp of ballast, comprise full bridge rectifier (BD), it is characterized in that: also comprise LED, the first input end (TBa) of described full bridge rectifier connects with ballast the first output (TB1) and ballast the second output (TB2) for being connected respectively with the first filament two ends of fluorescent lamp respectively, second input (TBb) of described full bridge rectifier connects with ballast the 3rd output (TB3) and the 4th output (TB4) for being connected respectively with the second filament two ends of fluorescent lamp respectively, the anode of described LED is connected with positive output end (BD1) and the negative output terminal (BD2) of described full-bridge rectifier respectively with negative electrode.

2. the LED lamp of cooperation ballast as claimed in claim 1, is characterized in that: also comprise filter capacitor (C1), the two ends of described filter capacitor are connected with positive output end (BD1) and the negative output terminal (BD2) of described full-bridge rectifier respectively.

3. the LED lamp of cooperation ballast as claimed in claim 1 or 2, is characterized in that: also comprise resistance (R1), the two ends of described resistance are connected with positive output end (BD1) and the negative output terminal (BD2) of described full-bridge rectifier respectively.

4. the LED lamp of cooperation ballast as claimed in claim 1 or 2, it is characterized in that: described LED comprises at least two LED branch roads, the hot end of each LED branch road and cold end are respectively and between the positive output end of described full-bridge rectifier (BD1) and negative output terminal (BD2).

5. the LED lamp of cooperation ballast as claimed in claim 4, is characterized in that: each LED branch road at least comprises two LED of series connection.