CN201715316U

CN201715316U - Compound LED module

Info

Publication number: CN201715316U
Application number: CN2010202433156U
Authority: CN
Inventors: 章开明; 吴文信; 谢坤; 章旻乾
Original assignee: Shanghai Xinkaiyuan Lighting Technology Co Ltd
Current assignee: Shanghai Xinkaiyuan Lighting Technology Co Ltd
Priority date: 2010-06-28
Filing date: 2010-06-28
Publication date: 2011-01-19
Anticipated expiration: 2020-06-28

Abstract

The utility model discloses a compound LED module including a plurality of LED modules with independent power supplies. Each LED module comprises a plurality of LEDs that are in serial connection and a control device to control the power supply of the LED module. The compound LED module supplies power to each LED module independently and each LED module is provided with the control device to independently control the power supply to each LED module, therefore, even though one of the LEDs is broken, only the broken LED is out of work and cannot influence the normal work of the whole compound LED module, in this way, the compound LED module can ensure a high operational reliability.

Description

Compound LED module

Technical field

The utility model relates to a kind of LED module, particularly a kind of compound LED module.

Background technology

LED (light emitting diode) is a kind of solid state device that can be converted into electric energy luminous energy, and its structure mainly is made up of PN junction chip, electrode and optical system or the like.The operating voltage of each LED solid luminescence device is about 3V, and operating current is 20mA, and thus, the power of this typical low-power LED is 0.06W.Because single led operating voltage is low, power is little, brightness is also not enough, therefore it can not be directly used in illumination.In actual applications, need be with a plurality of LED with series, parallel or string and mix ways of connecting and constitute led module and can realize preferable illuminating effect.

For with voltage be that the mains supply of 220V is suitable, needing 60 operating voltages once basic led module is that 3.2V, power are that the LED of 0.06W connects mutually, so that the operating voltage of this led module of Gou Chenging just in time is about 200V thus, and power is about 3.5W.Because the operating voltage of this led module can be suitable with mains supply, therefore just can in this led module, save complicated variable-frequency variable-voltage circuit, but directly get final product providing after the mains supply rectification to this led module, in addition, for centralized Control is carried out in the operation to a plurality of LED in this led module, generally also need to design a simple drive circuit with control device as this led module.Above-mentioned led module is owing to the variable-frequency variable-voltage circuit that need not complexity, and the circuit structure of control device is also comparatively simple, so its operation nature is comparatively reliable.

But when being used for actual illumination, the brightness of the led module of above-mentioned 3W power is obviously not enough, therefore just need the led module of a plurality of this 3W power parallel with one another again to constitute the bigger LED module of a power, partial L ED in the LED module that perhaps this power is bigger also can adopt the connected mode of series connection more in parallel earlier, or adopt the connected mode of other various strings and mixing, as long as guarantee that this LED module that constitutes thus not only can be suitable with mains supply, can also obtain enough brightness of illuminations and get final product.Wherein, shown in Figure 1 be a kind of common bigger LED module of power, its a plurality of LED that contain are the connected modes that adopted first series connection in parallel again, to the centralized Control of this a plurality of LED then by a simple control device realization.

Because at present common illuminating LED module, mostly be that a plurality of LED are linked to each other with string and mixing ways of connecting, therefore, in case wherein there is a LED that the fault of open circuit or short circuit has taken place, then this fault just will inevitably have influence on the operate as normal of all the other all LED, cause operating current rising, the caloric value of other LED to increase, even until burning dead lamp.

The utility model content

The technical problems to be solved in the utility model is in a single day to have one of them LED to break down in order to overcome LED module of the prior art, just can have influence on the operate as normal of whole LED module, even until the defective of burning dead lamp, even provide a kind of one of them or several LED to break down, also can not have influence on the compound LED module of the operate as normal of whole LED module.

The utility model solves above-mentioned technical problem by following technical proposals: a kind of compound LED module, its characteristics are, it comprises a plurality of independently-powered led modules, and the LED and that includes a plurality of series connection in each this led module is used for the power control device of control of this led module.

Preferably, each this led module is undertaken independently-powered by constant-current source.

Preferably, the power input of each this led module all is located at the central area of this compound LED module.

Preferably, these a plurality of led modules are symmetric configuration in this compound LED module, and these a plurality of LED in each this led module all evenly layout or intensive even layout in this led module.

Preferably, the colour temperature of all LED in the same led module is identical, but the colour temperature difference of the LED in the different LED module.

Preferably, the quantity of the LED in each this led module is set to: make that the supply voltage of the operating voltage of each this led module and electrical network is suitable.

Positive progressive effect of the present utility model is: this compound LED module of the present utility model is divided into a plurality of led modules with a plurality of LED that it contains, each led module is all carried out independently-powered, and each led module is equipped with a control device, so that independently-powered control is carried out in the operation of each led module, thus, even have one or several LED that fault has taken place, also only can have influence on the operate as normal of the led module at this fault LED place, and be unlikely to the operate as normal of whole this compound LED module is all produced harmful effect, thereby make this compound LED module of the present utility model can guarantee high operational reliability.

Description of drawings

Fig. 1 is the structural representation of an existing LED module.

Fig. 2 is the structural representation of this compound LED module of the present utility model.

Fig. 3 is the LED schematic layout pattern of first embodiment of this compound LED module of the present utility model.

Fig. 4 is the power supply connection diagram of LED layout of first embodiment of this compound LED module of the present utility model.

Fig. 5 is the LED schematic layout pattern of second embodiment of this compound LED module of the present utility model.

Fig. 6 is the power supply connection diagram of LED layout of second embodiment of this compound LED module of the present utility model.

Fig. 7 is the LED schematic layout pattern of the 3rd embodiment of this compound LED module of the present utility model.

Fig. 8 is the power supply connection diagram of LED layout of the 3rd embodiment of this compound LED module of the present utility model.

The specific embodiment

Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.

As shown in Figure 2, this compound LED module of the present utility model comprises a plurality of led modules, includes the LED of a plurality of mutual series connection in each this led module.The quantity that is provided with of this led module can be according to the lighting demand flexible design of reality, and for example being shown in Fig. 2 is provided with the situation of four led modules.Because the structure of those led modules is all identical, will be that example describes its structure only hereinafter therefore with a led module.

Each this led module all constitutes a relatively independent circuit structure, that is, each this led module is all independently-powered by an external power supply 1 acquisition on the one hand, and wherein this external power supply 1 can be selected constant-current source for use; Each this led module all has a control device 2 on the other hand, with operation to this led module, i.e. and the power supply control that the operation of a plurality of LED in this led module is concentrated.

Have benefited from the relatively independent circuit structure of those led modules, when any one or several LED in this compound LED module break down, it lost efficacy also at most only can have influence on the operate as normal of this led module at this fault LED place, and can not produce any influence, thereby can guarantee the operational reliability of whole this compound LED module to the operate as normal of other led module.

Simultaneously, the relatively independent circuit structure of those led modules also helps the remediation efficiency of raising to the fault LED in this compound LED module, because this moment, only need some led modules that can't operate as normal are carried out examination, just can be easily from the series LED of lesser amt, confirm the LED that breaks down, thereby repair quickly, and Comparatively speaking, all link to each other owing to all LED in the prior art, therefore when cause the whole LED module all can't operate as normal the time owing to fault some or several LED, just need carry out examination to individual other fault LED in a large amount of LED, such remediation efficiency obviously is very low.

Simultaneously, have benefited from the relatively independent circuit structure of those led modules, can also whether start operation to each led module controls respectively, by changing the real output that the actual quantity that is in the led module of running status just can change this compound LED module, and the change of its real output can correspondingly change the light output quantity of this compound LED module, has promptly realized the dimming function of this compound LED module of the present utility model thus.

Further, this compound LED module can also be designed to: the colour temperature of all LED in the same led module is all identical, and the colour temperature of the LED in the different led modules is then different.So, control respectively, just can realize the function of the adjustment colour temperature of this compound LED module by whether each led module being started operation.For example, when only starting led module of color of sunshine, the light fixture of having installed this compound LED module just can send the light of color of sunshine, when only starting led module of warm white, this light fixture just can send the light of warm white, even can also start the led module of a plurality of colour temperatures simultaneously, to obtain to be in harmonious proportion more abundant lighting effects.

Fashionable in practical application to illuminated field, with in the prior art similarly, can suitably select the quantity of the LED that connects in each led module, so that the operating voltage of each led module all can need not under the condition of variable-frequency variable-voltage directly suitable with the supply voltage of electrical network, with the design complexities of simplification control device.For example, when the operating voltage of each LED is that 3.2V, power are 0.06W, and when the supply voltage of electrical network is 220V, just 60 LED need connect in each led module, at this moment, the power output of each led module will after this again according to the lighting power demand of reality, select suitable led module installing quantity to get final product for about 3W.

Fig. 3 and first embodiment that is this compound LED module of the present utility model shown in Figure 4, wherein Fig. 3 is the LED schematic layout pattern in this compound LED module among this embodiment, Fig. 4 then is the schematic diagram of this compound LED module when connecting power supply.In this embodiment, adopted the led module of two 3W power, and utilized two external power supplys independently-powered respectively, thus, just can obtain the illuminating effect of 6W for them.

Fig. 5 and second embodiment that is this compound LED module of the present utility model shown in Figure 6, wherein Fig. 5 is the LED schematic layout pattern in this compound LED module among this embodiment, Fig. 6 then is the schematic diagram of this compound LED module when connecting power supply.In this embodiment, adopted the led module of four 3W power, and utilized four external power supplys independently-powered respectively, thus, just can obtain the illuminating effect of 12W for them.

Fig. 7 and the 3rd embodiment that is this compound LED module of the present utility model shown in Figure 8, wherein Fig. 7 is the LED schematic layout pattern in this compound LED module among this embodiment, Fig. 8 then is the schematic diagram of this compound LED module when connecting power supply.In this embodiment, adopted the led module of eight 3W power, and utilized eight external power supplys independently-powered respectively, thus, just can obtain the illuminating effect of 24W for them.

With reference to each schematic diagram of the above embodiments one to three, can be with the central area of the equal concentrated area of the power input of each led module design at whole this compound LED module, just can simplify power supply mode thus to a plurality of separate led modules.

Still with reference to each schematic diagram of the above embodiments one to three, the utility model is not done qualification to the shape of each led module, but in order to realize comparatively illuminating effect uniformly, a plurality of led modules in compound LED module should be in this compound LED module symmetric configuration.Further, because single led what obtain is less spot light, therefore all LED in each this led module all should be in this led module even layout, preferably can make matrix according to comparatively intensive equidistant mode arranges, thereby just a plurality of spot lights that can as much as possible a plurality of LED be formed merge equably and become soft area source, and help reducing the dazzle of light source, with final raising lighting quality.

In sum, this compound LED module of the present utility model is all carried out independently-powered to its each led module, and each led module is equipped with a control device, so that independently power supply control is carried out in the operation of each led module, thus, even have one or several LED that fault has taken place, it also only can have influence on the operate as normal of the led module at this fault LED place, and be unlikely to the operate as normal of whole this compound LED module is all produced harmful effect, thereby make this compound LED module of the present utility model can guarantee high operational reliability.

Though more than described the specific embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection domain of the present utility model is limited by appended claims.Those skilled in the art can make numerous variations or modification to these embodiments under the prerequisite that does not deviate from principle of the present utility model and essence, but these changes and modification all fall into protection domain of the present utility model.

Claims

1. a compound LED module is characterized in that, it comprises a plurality of independently-powered led modules, and the LED and that includes a plurality of series connection in each this led module is used for the power control device of control of this led module.

2. compound LED module as claimed in claim 1 is characterized in that each this led module is undertaken independently-powered by constant-current source.

3. compound LED module as claimed in claim 1 is characterized in that the power input of each this led module all is located at the central area of this compound LED module.

4. compound LED module as claimed in claim 1 is characterized in that, these a plurality of led modules are symmetric configuration in this compound LED module, and the equal intensive even layout in this led module of these a plurality of LED in each this led module.

5. as any described compound LED module among the claim 1-4, it is characterized in that the colour temperature of all LED in the same led module is identical, but the colour temperature difference of the LED in the different LED module.

6. as any described compound LED module among the claim 1-4, it is characterized in that the quantity of the LED in each this led module is set to: make that the supply voltage of the operating voltage of each this led module and electrical network is suitable.