CN201875485U

CN201875485U - Alternating-current LED light emitting device

Info

Publication number: CN201875485U
Application number: CN2010205928165U
Authority: CN
Inventors: 樊邦扬
Original assignee: NEO-NEON LED LIGHTING INTERNATIONAL Ltd
Current assignee: NEO-NEON LED LIGHTING INTERNATIONAL Ltd
Priority date: 2010-11-01
Filing date: 2010-11-01
Publication date: 2011-06-22
Anticipated expiration: 2020-11-01

Abstract

The utility model discloses an alternating-current LED light emitting device, which comprises a heat dissipation substrate. A plurality of cuppy bowls are arrayed on the heat dissipation substrate; circuits connected with the cuppy bowls are arranged in the heat dissipation substrate; LED wafers are fixed into the cuppy bowls; packaging rubber coating the LED wafers covers the insides of the cuppy bowls; a bridge rectifier circuit and an LED wafer light emitting module are arranged on the heat dissipation substrate; the bridge rectifier circuit consists of four LED wafer modules; the LED wafer light emitting module is connected with the bridge rectifier circuit; each LED wafer module for forming the bridge rectifier circuit includes at least two of the LED wafers in parallel connection along the same direction; a positive-electrode input end and a negative-electrode input end of the LED wafer light emitting module are correspondingly electrically connected with a positive-electrode output end and a negative-electrode output end of the bridge rectifier circuit; and an input end of the bridge rectifier circuit is electrically connected with an alternating-current power supply. The alternating-current LED light emitting device has the advantages of safety, stability, and full-time and complete light emission.

Description

A kind of alternating-current LED light-emitting device

[technical field]

The utility model relates to the LED light-emitting device, relates in particular to a kind of alternating-current LED light-emitting device.

[background technology]

Light emitting diode (LED) as the 4th generation light source, have advantages such as energy-saving and environmental protection, volume is little, the life-span is long, present LED lighting source is that ((semiconductor devices of work of IF=20～150mA) must provide the suitable DC current could be normally luminous to low-voltage for VF=2～3.6V), high electric current.

As Granted publication CN 100554773C, invention and created name is a kind of patent of invention that has the LED light fixture of heat-dissipating aluminium plate, this patent is printed conductor wire on the one side of aluminium base, the high heat conductive insulating layer that between aluminium base and conductor wire, is provided with, insulating paint is sprayed on the face that is printed with conductor wire simultaneously, and the face that is coated with the insulating oil enamelled coating is provided with a plurality of Lamp cups, edge at each Lamp cup is provided with a corresponding copper electrode, again led chip is fixed in the Lamp cup, be connected in series by bonding wire between the led chip, the two-terminal led pin of chip in serial connection back is electrically connected with two copper electrodes, will encapsulate with fluorescent glue and resin glue by bonding wire LED coupled in series chip at last.This structure has good heat dissipation, advantages of simple structure and simple, but said structure need could be normally luminous by DC current.

The appearance of a lot of alternating-current LED light-emitting modules is also arranged at present, its structure mainly comprises the bridge rectifier that four LED wafers form mostly, at bridge rectifier just, cathode output end is connected with a LED wafer set, described bridge rectifier just, negative input is electrically connected with AC power, after bridge rectifier is connected AC power, the bridge rectifier of four LED wafer formation is converted to dc source with AC power and gives the power supply of LED wafer set again, realize lighting of alternating-current LED light-emitting module, but there is defective in said structure, because above-mentioned bridge rectifier is formed by four LED wafers, in four LED wafers that form bridge rectifier, there is one of them LED wafer to go wrong, the operate as normal of whole LED light emitting module will be influenced, even the possibility that can't light or burn the whole LED light emitting module, bring a lot of uncertain safety factors to the user.

[utility model content]

The utility model technical issues that need to address provide a kind of safe, stable alternating-current LED light-emitting device.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of alternating-current LED light-emitting device, comprise heat-radiating substrate, and go into battle at described this heat-radiating substrate and show a plurality of glasss of bowls; LED wafer, described LED wafer are fixed in the described cup bowl, and described heat-radiating substrate is provided with the circuit that connects the LED wafer, and described LED wafer is connected with the line electricity of heat-radiating substrate; Packing colloid covers in the described cup bowl and coats described LED wafer; It is characterized in that, on described heat-radiating substrate, comprise bridge rectifier that four groups of LED wafer modules form and the LED wafer light emitting module that is connected with bridge rectifier, the every group of LED wafer module that forms bridge rectifier is in parallel in the same way by at least two LED wafers, the positive and negative electrode input of described LED wafer light emitting module is corresponding to be electrically connected with the positive and negative electrode output of bridge rectifier, and the input of described bridge rectification circuit is electrically connected with AC power.

The utility model beneficial effect compared with prior art is: owing to be the LED wafer light emitting module that is formed bridge rectifier and connected bridge rectifier by four groups of LED wafer modules on heat-radiating substrate, the every group of LED wafer module that forms bridge rectifier is in parallel in the same way by at least two LED wafers, even two one of them dead lamps of parallel connection LED wafer in the same way, also can not influence the operate as normal of whole light-emitting device, the utlity model has safe, stable advantage.

Preferably, described LED wafer light emitting module comprises two groups of LED wafer lamp groups of mutual electrical connection, and every group of LED wafer lamp group comprises four LED wafers parallel with one another.

Preferably, described heat-radiating substrate is a rectangle, and described four groups of LED wafer dies groups are fixed on respectively on four angles of described heat-radiating substrate, and described LED wafer light emitting module is fixed between described four groups of LED wafer modules.

Preferably, described heat-radiating substrate is a ceramic heat-dissipating substrate.

[description of drawings]

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is a planar structure schematic diagram of the present utility model.

Fig. 2 is the cutaway view of A-A shown in Figure 1.

Fig. 3 is circuit theory diagrams shown in Figure 1.

Fig. 4 is equivalent circuit theory figure shown in Figure 3.

Fig. 5 is the equivalent circuit diagram of alternating current shown in Figure 4 LED wafer work when positive phase.

Fig. 6 is the design sketch of alternating current shown in Figure 1 when the LED wafer is lighted when positive phase.

Fig. 7 is the equivalent circuit diagram of alternating current shown in Figure 4 LED wafer work when minus phase.

Fig. 8 is the design sketch of alternating current shown in Figure 1 when the LED wafer is lighted when minus phase.

Fig. 9 is the planar structure schematic diagram of traditional direct-current LED light fixture.

[specific embodiment]

With reference to accompanying drawing 1, Fig. 2, Fig. 3, shown in Figure 4, the utility model comprises heat-radiating substrate 10, goes into battle at described this heat-radiating substrate 10 and shows a plurality of glasss of bowls 12, is provided with the circuit 14 that connects LED wafer 16 in described heat-radiating substrate 10; LED wafer 16 is fixed in the described cup bowl 12, and described LED wafer 16 is electrically connected with the circuit 14 of heat-radiating substrate 10; Packing colloid 20 covers in the described cup bowl 12 and coats described LED wafer 16; On the circuit 14 of described heat-radiating substrate 10, comprise by four groups of

LED wafer modules

5,6,7,8 bridge rectifiers that form and the LED wafer light emitting module 9 that connects bridge rectifier, the positive terminal of described LED wafer light emitting module 9 is electrically connected with the cathode output end of bridge rectifier, promptly be electrically connected with end points 2 between the LED wafer module 8 with the LED wafer module 6 of bridge rectifier, the negative pole end of described LED wafer light emitting module 9 is corresponding to be electrically connected with the cathode output end of bridge rectifier, promptly be electrically connected with end points 4 between the LED wafer module 7 with the LED wafer module 5 of bridge rectifier, the input of described bridge rectifier is electrically connected with external ac power source 26, being input endpoint 1 between LED wafer module 5 and the LED wafer module 6 of bridge rectifier and LED wafer module 7 is electrically connected with external ac power source 26 with input endpoint 3 between the LED wafer module 8, the input endpoint 1 of described bridge rectifier, 3 corresponding A C1 just, AC2 is with reference to accompanying drawing 1, shown in 3.The

LED wafer module

5,6,7,8 that forms bridge rectifier is by the parallel connection of at least two LED wafers, and the utility model

LED wafer module

5,6,7,8 adopts two LED wafers in parallel in the same way, and promptly LED wafer module 5 is in parallel in the same way by two LED wafer A1, A2; LED wafer module 6 is in parallel in the same way by two LED wafer A3, A4; LED wafer module 7 is in parallel in the same way by two LED wafer D1, D2; LED wafer module 8 is in parallel in the same way by two LED wafer D3, D4.Described LED wafer light emitting module 9 comprises two groups of LED

wafer lamp groups

91,92 of mutual electrical connection, described LED wafer lamp group 91 comprises that four LED wafer B1, B2, B3, B4 are parallel with one another, described LED wafer lamp group 92 comprises that four LED wafer C1, C2, C3, C4 are parallel with one another, as shown in Figure 4.Described heat-radiating substrate 10 is a rectangle, described four groups of

LED wafer modules

5,6,7,8 are separately fixed on four angles of described heat-radiating substrate 10, be the fixedly upper left corner of heat-radiating substrate 10 of LED wafer A1, A2, LED wafer A3, A4 be the lower left corner of heat-radiating substrate 10 fixedly, LED wafer D1, D2 be the upper right corner of heat-radiating substrate 10 fixedly, LED wafer D3, D4 be the lower right corner of heat-radiating substrate 10 fixedly, described LED wafer light emitting module 9 is separately fixed between described four groups of

LED wafer modules

5,6,7,8, shown in accompanying drawing 1.Above-mentioned heat-radiating substrate 10 is a ceramic heat-dissipating substrate.

With reference to accompanying drawing 5 and shown in Figure 6, when AC power 26 is in positive phase, the LED wafer module 6 of bridge rectifier and LED wafer module 7 are connected, its LED wafer module 5 and LED wafer module 8 disconnect, therefore, electric current is via the LED wafer module 6 of bridge rectifier, the LED wafer module 7 of LED wafer light emitting module 9 and bridge rectifier and flow to ground connection, with reference to Fig. 4 and shown in Figure 5, the LED wafer A1 of the upper left corner LED wafer dies group 5 on the heat-radiating substrate 10 wherein, the LED wafer D3 of A2 and bottom right corner LED wafer dies group 8, D4 disconnects and not working, and other LED wafer is all lighted, as shown in Figure 6.

With reference to accompanying drawing 7 and shown in Figure 8, when AC power 26 is in minus phase, the LED wafer module 5 of bridge rectifier and LED wafer module 8 are connected, its LED wafer module 6 and LED wafer module 7 disconnect, therefore, electric current is via the LED wafer module 8 of bridge rectifier, the LED wafer module 5 of LED wafer light emitting module 9 and bridge rectifier and flow to ground connection, with reference to Fig. 4 and shown in Figure 7, the LED wafer A3 of the lower-left corner LED wafer dies group 6 on the heat-radiating substrate 10 wherein, the LED wafer D1 of A4 and upper right corner LED wafer dies group 7, D2 disconnects and not working, and other LED wafer is all lighted, as shown in Figure 8.

Because the LED wafer light emitting module 9 that on the circuit of heat-radiating substrate 10, forms bridge rectifier and connect bridge rectifier by four groups of

LED wafer modules

5,6,7,8, the every group of LED wafer module that forms bridge rectifier is by the parallel connection of at least two LED wafers, even the dead lamp of one of them of two parallel connection LED wafers, also can not influence the operate as normal of whole light-emitting device, have safe, stable characteristics.This structure can directly connect alternating current, because the frequency of alternating current is approximately about 50Hz,, utilized the outage of LED wafer to have twilight sunset to continue the characteristic of light when the forward position of alternating current during with the conversion of negative sense bit interleaving, human eye almost is the imperceptible luminous interruption that has, and has full-time all luminous characteristics.

The above is all so that the utility model conveniently to be described, in the spiritual category that does not break away from the utility model creation, the various simple covert and modification that those skilled in the art did of being familiar with this technology still belongs to protection domain of the present utility model.

Claims

1. an alternating-current LED light-emitting device comprises

Heat-radiating substrate is gone into battle at described this heat-radiating substrate and to be shown a plurality of glasss of bowls;

LED wafer, described LED wafer are fixed in the described cup bowl, and described heat-radiating substrate is provided with the circuit that connects the LED wafer, and described LED wafer is connected with the line electricity of heat-radiating substrate;

Packing colloid covers in the described cup bowl and coats described LED wafer;

It is characterized in that: on described heat-radiating substrate, comprise bridge rectifier that four groups of LED wafer modules form and the LED wafer light emitting module that is connected with bridge rectifier, the every group of LED wafer module that forms bridge rectifier is in parallel in the same way by at least two LED wafers, the positive and negative electrode input of described LED wafer light emitting module is corresponding to be electrically connected with the positive and negative electrode output of bridge rectifier, and the input of described bridge rectification circuit is electrically connected with AC power.

2. according to the described alternating-current LED light-emitting device of claim 1, it is characterized in that: described LED wafer light emitting module comprises two groups of LED wafer lamp groups of mutual electrical connection, and every group of LED wafer lamp group comprises four LED wafers parallel with one another.

3. according to claim 1 or 2 described alternating-current LED light-emitting devices, it is characterized in that: described heat-radiating substrate is a rectangle, described four groups of LED wafer dies groups are fixed on respectively on four angles of described heat-radiating substrate, and described LED wafer light emitting module is fixed between described four groups of LED wafer modules.

4. according to the described alternating-current LED light-emitting device of claim 3, it is characterized in that: described heat-radiating substrate is a ceramic heat-dissipating substrate.

5. according to claim 1 or 2 described alternating-current LED light-emitting devices, it is characterized in that: described heat-radiating substrate is a ceramic heat-dissipating substrate.