CN203322840U

CN203322840U - LED bulb

Info

Publication number: CN203322840U
Application number: CN2013204468863U
Authority: CN
Inventors: 李守运
Original assignee: JIANGSU CHANGZE ELECTRONICS CO Ltd
Current assignee: JIANGSU CHANGZE ELECTRONICS CO Ltd
Priority date: 2013-07-25
Filing date: 2013-07-25
Publication date: 2013-12-04
Anticipated expiration: 2023-07-25

Abstract

The utility model discloses an LED bulb which comprises a shell and an illuminant body arranged in the shell. The shell is composed of a lamp shell and a polar post, and the illuminant body is composed of a core post, LED lamp beads and a drive chip. One end of the core post is connected with the polar post, and the other end of the core post is inserted in the lamp shell. A cavity is formed in the core post, the LED lamp beads are arranged on the surface of the core post, and the drive chip is arranged in the cavity. The input end of the drive chip is connected with the polar post, and the output end of the drive chip is connected with the LED lamp beads. According to the LED bulb, the duty ratio of output current waveforms is modulated through a voltage-controlled oscillator, and the actual power of the LED bulb is maintained to be constant and is not affected by voltages or currents of external supplied power. The work state of the bulb is more constant, and the service life of the bulb is prolonged. A part of heat dissipated by the LED lamp beads dissipates from the core post, and the other part of heat penetrates through the glass lamp shell in an infrared mode, the temperature in the lamp shell is lowered, and the service life of the bulb is prolonged.

Description

A kind of LED bulb

Technical field

The utility model relates to the bulb field, is specifically related to a kind of LED bulb.

Background technology

The LED bulb be a kind of brightness higher than conventional incandescent, and power is far below the environment-friendly and energy-saving lamp of conventional incandescent, have start fast, power is little, without stroboscopic, be not easy to occur the characteristics of visual fatigue; But the LED lamp needs special drive circuit control lamp luminescence, the light fixture that drive circuit and LED lamp are combined as a whole is arranged at present, the light fixture that drive circuit and lamp socket are combined as a whole is also arranged; But the LED lamp drive circuit of prior art only has constant current control and constant voltage to control two kinds of modes, and when externally fluctuation occurs for the voltage of power supply or electric current, the power of LED lamp also can produce fluctuation, affects the actual life of LED bulb; The heat produced during LED lamp operation simultaneously makes the interior temperature of bulb higher, further affects the actual life of LED bulb.In a word, the LED bulb of prior art is subject to the impact of the factors such as power-supply fluctuation, heat radiation to be difficult to reach theoretical service life actual life.

Summary of the invention

The technical problems to be solved in the utility model is to provide a kind of LED bulb, and the LED bulb that can solve prior art is subject to the impact of the factors such as power-supply fluctuation, heat radiation to be difficult to reach the problem of theoretical service life actual life.

The utility model is achieved through the following technical solutions:

A kind of LED bulb comprises housing and is arranged at the illuminator in housing that described housing is comprised of lamp housing and pole, and described illuminator is comprised of stem stem, LED lamp pearl, driving chip, and described stem stem one end is connected with pole, and the other end inserts lamp housing; Described stem stem inside is provided with cavity, and described LED lamp pearl is arranged at the stem stem surface, and described driving chip is positioned in cavity, and the input of described driving chip is connected with pole, and the output of described driving chip is connected with LED lamp pearl.

The further improvement of the utility model scheme is, the end that described stem stem inserts lamp housing is provided with boss, and LED lamp pearl is arranged at boss surface.

The further improvement of the utility model scheme is, described LED lamp pearl is pasted on soft base plate, and described soft base plate is connected in the surface of boss.

The further improvement of the utility model scheme is that described soft base plate comprises the wallboard be connected with outer wall of boss, and the end plates that are connected with raised head face.

The further improvement of the utility model scheme is that described soft base plate is made by the flexible PCB material.

The further improvement of the utility model scheme is that described stem stem is made by Heat Conduction Material.

The further improvement of the utility model scheme is that described stem stem is made of metal.

The further improvement of the utility model scheme is, be provided with rectification circuit, voltage controlled oscillator, switch element, filter circuit on described driving chip, the input connecting post of described rectification circuit, the output of described rectification circuit connects the input of voltage controlled oscillator, the output of described voltage controlled oscillator connects the input of filter circuit by switch element, the output of described filter circuit connects LED lamp pearl.

The further improvement of the utility model scheme is that described switch element is the CMOS transistor.

The further improvement of the utility model scheme is, described lamp housing is made by high light transmissive material, and its outer wall is provided with frosted layer, and inwall is provided with phosphor powder layer or diffusion bisque.

The utility model advantage compared with prior art is:

One, modulate the dutycycle of output current wave by voltage controlled oscillator, realize that the actual power of LED lamp is constant, be not subject to voltage or the current affects of externally fed, make bulb duty temperature more, extended the service life of bulb;

Two,, when a plurality of LED lamps are used in combination, can not change because of the damage of certain LED lamp the power of other LED lamp;

Three, change arranging of LED lamp pearl, enlarged the irradiating angle of bulb, adopt the glass that light transmittance is higher to make lamp housing simultaneously, the brightness that has improved bulb, the LED bulb brightness of three watts can reach the brightness of 40 watts of incandescent lamps;

Four, the heat part that LED lamp pearl is distributed is distributed from stem stem, and some penetrates out glass lamp housing with ultrared form, thereby reduces the temperature in lamp housing, the service life of further improving bulb.

The accompanying drawing explanation

Fig. 1 is a kind of LED bulb structure schematic diagram of the present utility model.

Fig. 2 is the core column structure schematic diagram.

Fig. 3 is the soft base plate structural representation.

Fig. 4 is for driving the structured flowchart of chip.

Fig. 5 is for driving the electrical schematic diagram of chip.

The specific embodiment

A kind of LED bulb as shown in Figure 1, comprise housing and be arranged at the illuminator 3 in housing, described housing is comprised of lamp housing 1 and pole 2, described lamp housing 1 is made by glass, and its outer wall is provided with frosted layer, and inwall is provided with phosphor powder layer, described illuminator 3 is comprised of stem stem 31, LED lamp pearl 33, driving chip, described stem stem 31 is made of metal, and described stem stem 31 1 ends are connected with pole 2, and the other end inserts lamp housing 1; Described stem stem 31 inside are provided with cavity 32, and described LED lamp pearl 33 is arranged at stem stem 31 surfaces, and described driving chip is positioned in cavity 32, and the input of described driving chip is connected with pole 2, and the output of described driving chip is connected with LED lamp pearl 33.The end that described stem stem 31 inserts lamp housing 1 is provided with boss 34, and described LED lamp pearl 33 is pasted on the soft base plate 35 of being made by the flexible PCB material, and described soft base plate 35 is connected in the surface of boss 34.

As shown in Figure 3, described soft base plate 35 comprises the wallboard 351 be connected with boss 34 outer walls, and the end plates 352 that are connected with boss 34 end faces.

As shown in Figure 4, be provided with rectification circuit, voltage controlled oscillator, CMOS transistor, filter circuit on described driving chip, the input connecting post 2 of described rectification circuit, the output of described rectification circuit connects the input of voltage controlled oscillator, the output of described voltage controlled oscillator connects the input of filter circuit by switch element, the output of described filter circuit connects LED lamp pearl 33.

Claims

1. a LED bulb, comprise housing and be arranged at the illuminator (3) in housing, described housing is comprised of lamp housing (1) and pole (2), it is characterized in that: described illuminator (3) is comprised of stem stem (31), LED lamp pearl (33), driving chip, described stem stem (31) one ends are connected with pole (2), and the other end inserts lamp housing (1); Described stem stem (31) inside is provided with cavity (32), described LED lamp pearl (33) is arranged at stem stem (31) surface, described driving chip is positioned in cavity (32), and the input of described driving chip is connected with pole (2), and the output of described driving chip is connected with LED lamp pearl (33).

2. a kind of LED bulb as claimed in claim 1 is characterized in that: the end that described stem stem (31) inserts lamp housing (1) is provided with boss (34), and LED lamp pearl (33) is arranged at boss (34) surface.

3. a kind of LED bulb as claimed in claim 2 is characterized in that: it is upper that described LED lamp pearl (33) is pasted on soft base plate (35), and described soft base plate (35) is connected in the surface of boss (34).

4. a kind of LED bulb as claimed in claim 3, it is characterized in that: described soft base plate (35) comprises the wallboard (351) be connected with boss (34) outer wall, and the end plates (352) that are connected with boss (34) end face.

5. a kind of LED bulb as described as claim 3 or 4, it is characterized in that: described soft base plate (35) is made by the flexible PCB material.

6. a kind of LED bulb as claimed in claim 1 or 2, it is characterized in that: described stem stem (31) is made by Heat Conduction Material.

7. a kind of LED bulb as claimed in claim 6, it is characterized in that: described stem stem (31) is made of metal.

8. a kind of LED bulb as claimed in claim 1, it is characterized in that: on described driving chip, be provided with rectification circuit, voltage controlled oscillator, switch element, filter circuit, the input connecting post (2) of described rectification circuit, the output of described rectification circuit connects the input of voltage controlled oscillator, the output of described voltage controlled oscillator connects the input of filter circuit by switch element, the output of described filter circuit connects LED lamp pearl (33).

9. a kind of LED bulb as claimed in claim 8, it is characterized in that: described switch element is the CMOS transistor.

10. a kind of LED bulb as claimed in claim 1, it is characterized in that: described lamp housing (1) is made by high light transmissive material, and its outer wall is provided with frosted layer, and inwall is provided with phosphor powder layer or diffusion bisque.