Light source with unified led module

FIELD: electricity.

SUBSTANCE: invention relates to lighting units. The light source 1 has LED module 2, at least, with one series circuit of light-emitting diodes. Terminals of the module 2 are connected to terminals of the power supply 5 which is stabilised by the output current. The power of the module 2 is greater than the power of the light source, and on separate light-emitting diodes the bridging pieces 6 are installed. Light-emitting diodes can be placed along the module surface and are connected in several series circuits, connected to each other in parallel, so that each light-emitting diode of one circuit has corresponding light-emitting diodes symmetric to it in other circuits, their similar terminals are unipotential and can be connected to each other. The light source power is regulated by switching on the ready LED module, without any changes in the light source.

EFFECT: simplification of regulation of the light source power.

5 cl, 4 dwg

 

The invention relates to lighting technology, namely, to lighting devices containing light-emitting diodes.

Known fixtures modular design with the possibility of replacing individual parts: power supplies, lighting unit (product Catalog company LLC Luxon", 2012. Internet resource ). In the known lamps in a certain range of values of the nominal power of the light modules may be executed in identical dimensions, but the number and/or brand of LEDs varies with different capacity.

The lack of standardization of led modules according to the number and brand of LEDs within the range of values of the nominal power of the lamp is the disadvantage of lamps, in particular, with their small-scale production.

Closest to the proposed light source is known lamp with led module [RF patent 108123 U1, IPC F21V 8/00, 2011], selected as a prototype of the invention.

The known lamp contains a voltage Converter and led module including a group of semiconductor light-emitting crystals, at least a portion of light-emitting crystals included in the sequential circuit, wherein the electrical circuit comprises connected in parallel with part of the light-emitting sections of crystals Sotirov�tion, having closed almost zero resistance.

In the known lamp, due to the possibility of bypassing, you can change the number of crystals included in the sequential circuit, and, accordingly, to vary the amount of voltage of the led module, achieving better compatibility with the voltage Converter intended for connection to the lamp. If the power source is to connect several such circuits in parallel, the choice of the number of crystals included in the sequential circuit must be carried out for each circuit independently, without connection with similar transactions in other circuits.

Changing the value of the rated capacity of the known lamp during manufacture is possible only through the use of crystals of another brand or by changing the parameters of the power supply and the amount of crystals included in the serial chain.

However, it is impossible to adjust the lamp power known only by shunting part of the LEDs, since the power source is a voltage source (without the stabilization of the current).

The present invention aims at the unification of the led modules within the range of values of the rated power of the light sources, and expanding Arsenal of technical�ski means, providing regulation power led light sources.

The technical result of the invention consists in the possibility of power control of the light source by switching on the led module, without changing other structural elements and parameters of the light source and its components.

This result is achieved in that the light source containing the power source and the led module, which contains the LEDs, at least some of which are included in the sequential circuit connected to the terminals of the power source, with the ability to bypass part of the LEDs, conductive jumpers, enhanced with new features:

(a) the supply is made with the stabilization of the output current;

b) led module selected by the total rated power of LEDs that exceed the nominal power of the light source.

New signs, in conjunction with the known characteristics provide the possibility of reducing the power of the light source in proportion to the share shunted LEDs (constant current value the power of the light source is proportional to the fraction of LEDs, the remaining nesortiranimi).

The nominal led current fashion�I remains unchanged, respectively, remains unchanged and the brightness of the led during operation of the light source.

In the particular case of the invention, the LEDs are connected in two or more series circuits, all circuits connected in parallel, and choose to bypass the same number of LEDs in each series circuit.

This provides the claimed technical result in the light sources with multiple serial chains of LEDs connected to one power source.

In another particular case of the invention chosen for the shunt LEDs evenly spaced along the length or surface of the led module.

This placement of the shunted LEDs improves the visual perception of the light source, especially when turning on light sources of different capacity in the same space, and also improves thermal regime of the LEDs.

In another particular case of the invention, the groups of LEDs corresponding to the sequential circuits, placed on the surface of the module symmetrically. In this case, the symmetry can be of different types: axial, rotary, etc.

As a result, on the surface of the module LEDs in one sequential circuits are symmetrically placed LEDs other circuits. It is possible shuntaro�ing LEDs, symmetrically placed on the surface of the module, which improves the visual perception of the light source, especially when using light sources of different capacity in the same space, and also improves thermal regime of the module.

In another particular case of the invention, the same conclusions are symmetrically placed LEDs are topotential all series circuits and at least part topotential conclusions of LEDs are connected together.

These connections are made in the manufacture of the led module. In this particular case, the new features in combination allow to reduce the number of shunt jumper installed during Assembly of the light source, this automatically ensures the symmetry of the shunted LEDs on the surface of the module.

Led module with the use of the invention may have any shape (line, square, circle, etc.), in accordance with the design of the light source (lamp, linear lamp, lamp, led panel, etc.).

LEDs can be individual structural units or in clusters, matrices, etc.

The essence of the proposed invention is illustrated graphic materials, where:

Fig.1 shows a structural electrical diagram of a light source with a single serial chain�d LEDs;

Fig.2 - connection diagram and placement of LEDs in a module of a rectangular shape with two chains of LEDs;

Fig.3 - schematic diagram of the module with four chains of LEDs;

Fig.4 circuit diagram and placement of LEDs in a module of a rectangular shape with four chains of LEDs;

The light source 1 (Fig.1) comprises a led module 2 with one sequential chain of LEDs. Conclusions 3 and 4 of the led module 2 is connected to the terminals of the power source 5, which is stable output current.

Individual LEDs are mounted conductive shunt jumper 6. The ability to install these jumpers 6, is provided, for example, one-third of the total number of LEDs (possible jumpers are shown with dotted lines).

Values of the nominal electric power of the light source 1 and the led module 2 (without considering the errors that are made possible by the instability of the output current of the power source 5) are related by:

P1/P2=(Nn)/N,(1)

where: P1- nominal�I power light source;

P2- rated power of the led module, is equal to the total capacity of all N LEDs;

N is the total number of LEDs in the led module;

n - number of LEDs, conductive jumpers shunted.

Power light source may be in the range of:

P1/NP1P2(2)

The preferred range is:

P1=(0,7÷1,0)P2(3)

For a given power rating of the light source is not equal to the total power of the LEDs using existing modules, choose the led module nearest greater power. From the relation (1) are estimated shunted LEDs, round it to an integer value, select the module corresponding number of LEDs and set them �coprostasis jumper 6.

When connecting the light source 1 to the mains electric current from the power source 5 flows through the series circuit of the LEDs of the led module 2 except shunted LEDs, where the current flows through the webs 6. Since the power supply stable output current, the power of the light source is proportional to the number of LEDs, the remaining nesortiranimi, and is defined by the formula (1).

In another example, the led module 7 (Fig.2) has a rectangular shape and contains two sequential led circuit 8 and 9, unipolar outputs are connected between the source connection of the power supply is not shown).

The LEDs are evenly placed on the surface of the module 7 and is connected in such a way that each light-emitting diode circuit 8 on the surface of the module corresponds to symmetric a (symmetry relative to the axis 10) the led in the circuit 9, and the same conclusions symmetrically arranged LEDs are topotential.

In each of the two sequential circuits are choosing to bypass the same number of LEDs, i.e. the number of shunted LEDs (n) is a multiple of two. In the drawing Fig.2 shows the bypass jumpers 11 eight LEDs.

This example also applies to the formula (1)÷(3) and work hours�ka light similar to the foregoing. Funds equalisation of current in parallel-connected led circuits are not the subject of the invention and are not considered here. Alignment of current in parallel-connected led chains can be performed by known means, for example by sorting LEDs according to their voltage-current characteristic.

In the third example, the led module 12 (Fig.3÷4) contains four sequential led circuit 13÷16, unipolar outputs are connected between the source connection of the power supply is not shown).

The LEDs are evenly placed on the surface of the module 12 has a rectangular shape and are connected in such a way that each light-emitting diode of one chain on the surface of the module correspond to symmetric a, the LEDs in the other three circuits, and the same conclusions symmetrically arranged LEDs are topotential. Here we have used a rotary symmetry.

In each of the sequential circuits 13÷16 choose to bypass the same number of LEDs, i.e. the number of shunted LEDs (n) is divisible by four. In the drawing Fig.3 shows the installation location of the jumpers for 17 bypass surgery four, eight, twelve or sixteen LEDs, i.e., one, two, three or four LEDs in each of the circuits 13÷16 (jumper 17 is conventionally shown in the led�th circuit 16).

In view of this symmetry, there are a large number of combinations of the shunted LEDs that allows you to choose the combination that provides comfort when using the light source, especially when turning on light sources of different capacity in the same room.

Topotential conclusions symmetrically arranged LEDs can be connected by crosspieces 18 (shown by a dotted line), thereby reducing the required number of webs 17.

This example also applies to the formula (1)÷(3), and the light source is similar to the foregoing.

Examples of the confirm the possibility of achieving the claimed technical result, which the power control of the light source by switching on the led module, without changing other structural elements and parameters of the light source and its components.

These examples do not exhaust the possibilities for the implementation of the invention, including specific implementation of the led module and placing it on the LEDs.

1. The light source containing the power source and the led module, which contains the LEDs, at least some of which are included in the sequential circuit connected to the terminals of power source, � the ability to bypass part of the LEDs, conductive jumpers, whereinthat power supply is made with the stabilization of output current, and the module is selected by the total rated power of LEDs that exceed the nominal power of the light source.

2. The light source according to claim 1, characterized in,that the LEDs are connected in two or more series circuits, all circuits connected in parallel, and in each series circuit shunted conductive jumpers the same number of LEDs.

3. The light source according to claim 1 or 2, characterized in thatthat shunted LEDs evenly spaced along the length or surface of the led module.

4. The light source according to claim 2, whereinwhat group of LEDs corresponding to the sequential circuits placed on the module is symmetrical.

5. The light source according to claim 4, whereinthat same conclusions symmetrically placed LEDs are topotential all series circuits and at least part topotential conclusions of LEDs are connected together.



 

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