CN201715279U

CN201715279U - Global LED bulb

Info

Publication number: CN201715279U
Application number: CN2009203172095U
Authority: CN
Inventors: 许国永
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-14
Filing date: 2009-12-14
Publication date: 2011-01-19
Anticipated expiration: 2019-12-14

Abstract

The utility model discloses a global LED bulb comprising a bulb shell, a bulb cover, a LED lighting array and a LED driving circuit. The LED lighting array and the LED driving circuit are connected with each other and disposed in the bulb shell, which is connected with the bulb cover. The LED lighting array comprises a plurality of surface mount type LED and a reflecting plate, thereby one side of the reflecting plate is provided with a white reflecting layer, on which are distributed the surface mount type LED in radial shape. By using the surface mount type LED of the global LED bulb, the luminous intensity of the LED lighting array can be greatly improved, the structural design of the LED lighting array can be simplified for the small size of the surface mount type LED, thereby the luminous intensity of the global LED bulb can be improved, the light decline period can be prolonged, the production process can be greatly reduced, and the product quality can be improved.

Description

A kind of spherical LED bulb

Technical field

Utility model relates to a kind of light fixture, relates in particular to LED to be the photoelectricity conversion elements and can directly to insert the LED bulb that civil power carries out work.

Background technology

Spherical LED bulb has been subjected to consumer's favor as a kind of typical products of third generation light source.In order to improve brightness, the general otherwise effective technique that adopts of spherical LED bulb is to increase LED quantity in the prior art, can reach the effect that improves brightness although it is so, but the problem of bringing is very outstanding, because increase the density that LED number will increase the LED light emitting array of spherical LED bulb inside accordingly, if inappropriate the spreading out of each LEDs of LED light emitting array certainly will be caused the bad problem of heat radiation, aggravate the degree of each LEDs light decay easily, so just need correspondingly increase the size of LED light emitting array after the increase LED quantity, so that rational distance is arranged between each LED, and then cause in limited spherical LED bulb and will hold bigger LED light emitting array, so just make the structure of LED light emitting array must design more compactly, complex structure not only, and improved the difficulty on the production technology.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of brightness height, the spherical LED bulb that the LED light emitting array is simple in structure.

For solving the problems of the technologies described above, the utility model adopts following technical scheme: this sphere LED bulb comprises housing, lampshade, LED light emitting array and led drive circuit, described LED light emitting array is connected with led drive circuit and all is arranged in the housing, described housing is connected with lampshade, the luminous permutation of described LED comprises some adopting surface mounted LEDs and a reflector, the one side of described reflector is provided with one deck white reflection layer, and described adopting surface mounted LED is dispersed in reflector radially and is provided with on this face of white reflection layer.

As of the present utility model preferred, described led drive circuit comprises bridge rectifier, manifold type reduction voltage circuit and constant-current control circuit at least, described bridge rectifier is connected with the manifold type reduction voltage circuit, described manifold type reduction voltage circuit is connected with constant-current control circuit, and described constant-current control circuit is connected with the LED light emitting array.Can make the output low-voltage DC for the LED light emitting array provides power supply by such led drive circuit, make the ground voltage that connects at the every LEDs of LED light emitting array two ends all very little, all be controlled at greatly below the safe voltage to the people.

As of the present utility model preferred, the adopting surface mounted LED of described LED light emitting array is divided into some groups, and every group adopting surface mounted LED parallel connection is connected in series between each group.Certainly can not produce the situation of open circuit after any LEDs breaks down, thereby guarantee that the LED light emitting array still is in the energising duty.

The utility model adopts technique scheme: spherical LED bulb is by using adopting surface mounted LED, make the luminous intensity of LED light emitting array be greatly enhanced, simultaneously because the adopting surface mounted LED volume is little, thereby make LED light emitting array structure can design more simply, the luminosity of being not only spherical LED bulb like this is higher, the light decay cycle stretch-out, and production technology reduces the product quality raising greatly.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is further specified.

Fig. 1 is the front view of a kind of spherical LED bulb of the utility model;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the structural representation of the LED light emitting array of a kind of spherical LED bulb of the utility model;

Fig. 4 is the use schematic diagram of the led drive circuit of a kind of spherical LED bulb of the utility model.

The specific embodiment

As shown in Figure 1, 2, this sphere LED bulb is made up of housing 1, lampshade 2, LED light emitting array 3 and led drive circuit 4.Housing 1 is a hollow structure, and the one end is provided with the metal screw socket 5 that is used to insert civil power, and this end diameter is less; Other end diameter at housing 1 is bigger.All be arranged in the housing 1 at LED light emitting array 3 and led drive circuit 4, LED light emitting array 3 is positioned at this bigger end of housing 1 diameter; Lampshade 2 is transparent, and it is connected this bigger end of housing 1 diameter.The input of led drive circuit 4 is connected with the metal screw socket 5 of housing 1, and led drive circuit 4 is made up of bridge rectifier 6, manifold type reduction voltage circuit 7 and constant-current control circuit 8.As shown in Figure 4, bridge rectifier 6 connects manifold type reduction voltage circuit 7, manifold type reduction voltage circuit 7 connects constant-current control circuit 8, and the led drive circuit 4 of this structure can be exported the voltage of the safe voltage that is lower than relative human body, helps to improve the electrical safety of this sphere LED bulb.

As shown in Figure 3, LED light emitting array 3 is made up of a circular reflector 9 and adopting surface mounted LED 10, adopting surface mounted LED 10 is distributed on the reflector 9 radially, as shown in Figure 4, all adopting surface mounted LED 10 five equilibriums are divided into three groups, every group adopting surface mounted LED 10 is connected in parallel together, and each is organized between the adopting surface mounted LED 10 and is connected in series again.As shown in Figure 3, reflector 9 is provided with one deck white reflection layer 11 at this face that is provided with adopting surface mounted LED 10, and such reflector layer 11 is simple in structure, easily manufactured.

Constant-current control circuit 8 connects LED light emitting array 3, and after spherical LED bulb directly connected civil power, process flowed to LED light emitting array 3 with electric current after the rectification step-down constant current control of led drive circuit 4, makes each adopting surface mounted LED 10 operate as normal.There has been led drive circuit 4 can make this sphere LED bulb directly replace original electricity-saving lamp or incandescent lamp to use, very easy to use.Because led drive circuit 4 adopts the mode of coil isolated buck, and final voltage at each adopting surface mounted LED 10 two ends all is far smaller than the size of relative human safety voltage's value, therefore has very high security again.

Claims

1. spherical LED bulb, it comprises housing (1), lampshade (2), LED light emitting array (3) and led drive circuit (4), described LED light emitting array (3) is connected with led drive circuit (4) and all is arranged in the housing (1), described housing (1) is connected with lampshade (2), it is characterized in that: the luminous permutation of described LED comprises some adopting surface mounted LEDs (10) and a reflector (9), the one side of described reflector (9) is provided with one deck white reflection layer (11), and described adopting surface mounted LED (10) is dispersed in reflector (9) radially and is provided with on this face of white reflection layer (11).

2. according to the described spherical LED bulb of claim 1, it is characterized in that: described led drive circuit (4) comprises bridge rectifier (6), manifold type reduction voltage circuit (7) and constant-current control circuit (8) at least, described bridge rectifier (6) is connected with manifold type reduction voltage circuit (7), described manifold type reduction voltage circuit (7) is connected with constant-current control circuit (8), and described constant-current control circuit (8) is connected with LED light emitting array (3).

3. according to claim 1 or 2 described spherical LED bulbs, it is characterized in that: the adopting surface mounted LED (10) of described LED light emitting array (3) is divided into some groups, and every group adopting surface mounted LED (10) parallel connection is connected in series between each group.