CN205299141U

CN205299141U - LED (Light emitting diode) lamp tube

Info

Publication number: CN205299141U
Application number: CN201520970628.4U
Authority: CN
Inventors: 刘铨钊
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-11-30
Filing date: 2015-11-30
Publication date: 2016-06-08
Anticipated expiration: 2025-11-30
Also published as: TWM540969U; HK1218688A2

Abstract

The utility model discloses a LED (Light emitting diode) lamp tube, it includes multiunit the luminescence unit of establishing ties together, the total voltage of the luminescence unit of all series connection be the line voltage, every group luminescence unit include rectifier unit with by the at least a set of LED lamp cluster of this rectifier unit driven, the every LED of group lamp cluster includes the LED of a plurality of series connection, wherein the rectifier unit of adjacent luminescence unit concatenates in proper order. The utility model discloses a LED (Light emitting diode) lamp tube has giveed up the electronic circuit of steady voltage stationary flow, is the permutation and combination with a plurality of LED, and design and can be directly come the direct drive with 220 volts alternating current, the application of minimize electronic component, but both reduce cost, the life -saving helps energy -concerving and environment -protectively again.

Description

A kind of LED lamp tube

Technical field

The relevant a kind of LED lamp tube of this utility model, particularly relating to one can directly by 220 volts of electrically driven (operated) LED lamp tube in city.

Background technology

At present, light emitting diode (LED) has started to generalize as lighting use, and light emitting diode is generally all defined as with the product of low-voltage direct electric drive, therefore must there is power drives part (Driver), therefore can produce additional energy consumption and reduce product service life.

Utility model content

In view of this, main purpose of the present utility model is in that to provide one can directly use the electrically driven (operated) LED lamp tube in city.

For reaching above-mentioned purpose, this utility model provides a kind of LED lamp tube, it includes the many groups of luminescence units being cascaded, the total voltage of the luminescence unit of all series connection is line voltage, often group luminescence unit includes rectification unit and the least one set LED string driven by this rectification unit, often group LED string includes the LED of multiple series connection, and wherein the rectification unit of adjacent light-emitting units is sequentially connected in series.

Described LED string is many groups, and the LED connection in series-parallel of each group connects.

Described rectification unit is bridge rectifier.

Described bridge rectifier is made up of four LED.

Described bridge rectifier is made up of four commutators.

Described luminescence unit is 13 groups, and often group luminescence unit includes LED string two groups in parallel, and often group LED string includes the LED of five series connection.

Described line voltage is 220 volts.

LED lamp tube of the present utility model abandons the electronic circuit of voltage stabilization and current stabilization, is with the permutation and combination of multiple LED, is designed into and can directly directly drive with the alternating current of 220 volts, reduce the application of electronic component as far as possible, both can reduce cost, life-saving, contribute to again energy-conserving and environment-protective.

Accompanying drawing explanation

Fig. 1 is an embodiment schematic diagram of this utility model LED lamp tube, all makes the circuit designed with LED, it is illustrated that for one of which luminescence unit;

Fig. 2 is another embodiment schematic diagram of this utility model LED lamp tube, the circuit of LED and commutator matching design, it is illustrated that for one of which luminescence unit;

Fig. 3 indicates that in this utility model, the quantity of the serial or parallel connection of LED is based on the rule of LED to adjust the schematic diagram of cooperation.

Detailed description of the invention

For ease of structure of the present utility model and the effect that reaches are had further understanding, describe in detail as follows in conjunction with accompanying drawing preferred embodiment.

LED lamp tube of the present utility model includes the many groups of luminescence units being cascaded, the total voltage of the luminescence unit of all series connection is line voltage, often group luminescence unit includes rectification unit and the least one set LED string driven by this rectification unit, and often group LED string includes the LED of multiple series connection. Wherein the rectification unit of adjacent light-emitting units is sequentially connected in series. If wherein LED string many groups, the LED connection in series-parallel of each group connects.

As shown in Figure 1, it is an embodiment of this utility model LED lamp tube, in this embodiment, LED pipe range is 48, base plate line is as shown in Figure 1, four pieces of LED are utilized to form bridge rectifier, respectively L1, L2, L3, L4, this bridge rectifier is for driving LED string two groups in parallel, this embodiment is often organized LED string be made up of the LED of five pieces of series connection, as shown in Figure 1, L5, L6, L7, L8, L9 series connection forms one group of LED string, L10, L11, L12, L13, L14 series connection forms another group LED string, namely totally ten four pieces of LED form one group of luminescence unit, the present embodiment is together in series directly to drive with the voltage of 220 volts with 13 groups of luminescence units, this example is based on the LED that forward voltage is 2.4 volts, one group of 14 pieces of LED total voltage is 16.8 volts, convenient calculating is with 17 volts of reckonings, 13 groups of series connection are exactly 221 volts, i.e. available 220 volts of direct drivings. implementation process running is satisfied, suitable for the LED series and parallel combination of experiment proof fixed characteristic can directly allow civil power 220 volts directly drive, and as the LED of rectifying part because being bridge rectifier, only sends out half intensity, therefore the spacing of LED should reduce by half, to keep uniform brightness.

This design is based on based on the forward voltage of LED, and such voltage changes to some extent, just needs to reconfigure, it is therefore an objective to whole LED string will be allowed to accept the driving of supply voltage.

This utility model also can change four LEDs of rectification into commutator (Rectifier), namely bridge rectifier is formed with four commutators, as shown in Figure 2, bridge rectifier is formed with D1, D2, D3, D4, L1, L2, L3, L4, L5 series connection forms one group of LED string, L6, L7, L8, L9, L10 series connection forms another group LED string, and two groups of LED connection in series-parallel connect. But because commutator is different from the specification of LED, LED strip quantity also just needs redistribution, to coordinate the specification of power supply, as shown in Figure 3, using the LED of different size, just need to coordinate the quantity of series connection and parallel connection, the often group LED string often organized in Fig. 3 in luminescence unit is made up of six pieces of LED.

The luminescence unit of LED lamp tube of the present utility model is not limited to 13 groups, often in group luminescence unit, LED string is also not limited to be two groups of parallel connections, and often organize the number of the LED of series connection in LED string and be also not limited to five in embodiment or six, the group that in this utility model, LED strip is in parallel is joined and should be allocated according to the rule of LED, to coordinate the rule of mains supply, additional mains supply is made directly to drive LED lamp tube normal luminous.

Computational methods:

Set:

V (line): supply voltage

V (LED): LED forward voltage

V (rect): commutator forward voltage

N: often organize the LED number of LED string

M: serial light emitting cell group number altogether

With above setting, following computational methods can be obtained:

Full LED:V (line)={ (2+n) V (LED) } m

Mixed LED:V (line)={ 2V (rect)+nV (LED) } m.

Utilize LED lamp tube of the present utility model, can have the following characteristics that

1. power saving

This utility model is that direct civil power goes to drive LED, therefore reduces using electronic component as far as possible, decreases wiring work, also directly reduce energy resource consumption, refer to test data except reducing cost

Table 1

Two kinds of samples are to record under identical test condition.

2. powerup issue

This design is that tendency abandons non-essential voltage stabilizing, steady flow system, and to obtain longer service life and bigger economic benefit, therefore product can the environment relatively stable for electric power system preferably.

3. heat dissipation problem

The existing LED lamp tube circuit in contrast market, this design is greatly reduced the use of parts, makes circuit reduction, and therefore the generation of heat also reduces relatively, LED lamp to indoor use, can add small louvre if desired to strengthen the stability of light fixture and to extend the life-span of light fixture.

4. life problems

Using electronic component because reducing, the life-span is substantially extended under normal use, normally estimates, 5 year life-span should be maintained, be particularly suitable for changing the inconvenient place of light fixture, be substantially reduced the frequency of replacing, alleviate workload and the expense of maintenance, and reduce the discarded impact that environment is caused.

The above, be only preferred embodiment of the present utility model, is not intended to limit protection domain of the present utility model.

Claims

1. a LED lamp tube, it is characterized in that, it includes the many groups of luminescence units being cascaded, the total voltage of the luminescence unit of all series connection is line voltage, often group luminescence unit includes rectification unit and the least one set LED string driven by this rectification unit, often group LED string includes the LED of multiple series connection, and wherein the rectification unit of adjacent light-emitting units is sequentially connected in series.

2. LED lamp tube as claimed in claim 1, it is characterised in that described LED string is many groups, the LED connection in series-parallel of each group connects.

3. LED lamp tube as claimed in claim 1 or 2, it is characterised in that described rectification unit is bridge rectifier.

4. LED lamp tube as claimed in claim 3, it is characterised in that described bridge rectifier is made up of four LED.

5. LED lamp tube as claimed in claim 3, it is characterised in that described bridge rectifier is made up of four commutators.

6. LED lamp tube as claimed in claim 1, it is characterised in that described luminescence unit is 13 groups, often group luminescence unit includes LED string two groups in parallel, and often group LED string includes the LED of five series connection.

7. LED lamp tube as claimed in claim 1, it is characterised in that described line voltage is 220 volts.