CN102345806A - LED (light emitting diode) illumination device - Google Patents
LED (light emitting diode) illumination device Download PDFInfo
- Publication number
- CN102345806A CN102345806A CN2010102446502A CN201010244650A CN102345806A CN 102345806 A CN102345806 A CN 102345806A CN 2010102446502 A CN2010102446502 A CN 2010102446502A CN 201010244650 A CN201010244650 A CN 201010244650A CN 102345806 A CN102345806 A CN 102345806A
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- lamp string
- lighting device
- led lighting
- variable resistance
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses an LED (light emitting diode) illumination device which comprises a first light string and a second light string which are connected in parallel; each light string comprises at least one LED which are connected in series; and the LED illumination device also comprises a variable resistor which is at least connected with one of the first light string and a second light string in series. Through changing the position of a slide plate of the variable resistor, the current flowing through the light string which is correspondingly connected with the variable resistor in series is changed so as to regulate the color temperature of the light rays of the LED illumination device.
Description
Technical field
The present invention relates to a kind of lighting device, especially a kind of lighting device that adopts light emitting diode.
Background technology
At present, and light emitting diode (Light-Emitting Diode, LED) as a kind of light source, good because of the tool light quality, luminous efficiency is high, color is various and reaction speed is fast etc., and characteristic is widely used in each technical field.Raising along with urban construction and townie up-to-dateness; People decorate outdoor light such as building, square; And the requirement that room lights such as public place of entertainment, inhabitation place are decorated also improves gradually, therefore, adopts LED also to increase gradually as the demand of the light source of lighting device.
How being directed against different being shone the space, build attractive in appearance, comfortable luminous environment is an important topic of modern illumination, and colour temperature is to influence one of most important factor of being shone the spatial light environmental degree of comfort.In the prior art; Usually adopt pulse width modulation (Pulse Width Modulation; PWM) technology changes colour temperature; The frequency of the pwm signal through changing the input lighting device changing the luminous intensity that LED sends in this lighting device, thereby is adjusted the colour temperature of the light that this lighting device sends.Yet, adopt PWM to control the mode of this lighting device colour temperature, the circuit of this lighting device needs AC-DC converter, DC-DC transformer and complex circuit design such as PWM chip for driving and peripheral circuit thereof, not only causes illumination efficiency to reduce and the cost increase.
Summary of the invention
In view of this, be necessary to provide a kind of LED lighting device of adjustable color temperature in fact.
A kind of LED lighting device; Comprise the first lamp string and the second lamp string that are connected in parallel; Each lamp string comprises at least one LED of mutual serial connection, this LED lighting device also comprise with the said first lamp string and the second lamp string in one of them variable resistance that is connected in series at least, the position of the slide plate through changing this variable resistance; Thereby change the size of the electric current of the corresponding lamp string that is connected in series of flowing through, with the colour temperature of the light of adjusting this LED lighting device with this variable resistance.
Compared with prior art; This LED lighting device comprise the first lamp string and the second lamp string and with the first lamp string and the second lamp string in one of them variable resistance that is connected in series; The position of the slide plate through changing this variable resistance; The size of the first lamp string that thereby changing flows through is connected in series with this variable resistance or the electric current of the second lamp string, with the colour temperature of the light of adjusting this LED lighting device, this LED lighting device does not use the PWM technology and reaches the purpose of modulation colour temperature; Thereby the simplification circuit structure is saved cost.
With reference to the accompanying drawings, in conjunction with specific embodiment the present invention is done further description.
Description of drawings
Fig. 1 is the stereogram of the LED lighting device in one embodiment of the invention.
Fig. 2 is the sketch map of the circuit of the LED lighting device in the first embodiment of the present invention.
Fig. 3 is the sketch map of the circuit of the LED lighting device in the second embodiment of the present invention.
Fig. 4 is the sketch map of the circuit of the LED lighting device in the third embodiment of the present invention.
Fig. 5 is the sketch map of the circuit of the LED lighting device in the fourth embodiment of the present invention.
Fig. 6 is the sketch map of the circuit of the LED lighting device in the fifth embodiment of the present invention.
The main element symbol description
| Led light source | ?10 |
| The LED lighting circuit | ?100、200、300、400、500 |
| The first lamp string | ?101 |
| The second lamp string | ?102 |
| Substrate | ?11 |
| LED | ?12 |
| The one LED | ?121 |
| The 2nd LED | ?123 |
| Lampshade | ?20 |
| Radiator | ?30 |
| First end face | ?31 |
| Second end face | ?32 |
| The side | ?33 |
| Groove | ?35 |
| Opening | ?36 |
| Joint | 40 |
| |
50 |
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55 |
| |
60 |
| |
70 |
| |
80 |
| |
81 |
| |
85 |
| |
86 |
| |
88 |
| The |
90 |
The specific embodiment
See also Fig. 1, a joint 40 and an adjusting button 50 that the LED lighting device 90 in the first embodiment of the present invention comprises a led light source 10, cover at the peripheral lampshade 20 of led light source, electrically connect with the hot radiator 30 that is connected of led light source 10, with led light source 10.
This led light source 10 comprises the substrate 11 of a circle and is located at the some white light LEDs 12 on this substrate 11.Please consult Fig. 2 simultaneously, said white light LEDs 12 comprises that some colour temperatures are higher, and is lower like a LED121 and the some colour temperatures of 6500k (Kelvin, Kelvin), like the 2nd LED123 of 2800k.During practical implementation, a said LED121 and the 2nd LED123 can adopt cold light source and warm light source respectively, to regulate the colour temperature of these LED lighting device 90 emitted lights in a big way.
This lampshade 20 is the hemisphere shape of hollow, combines closely in the edge of its opening and substrate 11.The common receiving space that forms roughly sealing is in order to be contained in its inside with said LED12 between lampshade 20 and the substrate 11.
This radiator 30 adopts the material of tool high thermal conductivity coefficients, and for example metal such as aluminium, gold, silver, copper or its alloy are processed.This radiator 30 comprises that second end face 32 and of the circle that first end face 31, a diameter of circle that a diameter is bigger is less is connected in the side 33 of said first, second end face 31, the taper between 32.This led light source 10 is positioned on first end face 31 of this radiator 30.The upper edge, side of this radiator 30 is axially arranged with some grooves 35, and said groove 35 evenly distributes along the circumferencial direction of radiator 30, and the setting of said groove 35 is in order to increase the area of dissipation of this radiator 30.This side 33 is provided with an opening 36 along the axially extended strip of radiator 30.
Regulate button 50 and be contained in this opening 36, and can carry over the upper and lower slip of bearing of trend of this opening 36, thereby regulate the colour temperature of led light source 10 emergent raies.
This joint 40 is positioned on second end face 32 of radiator 30.During use, this LED lighting device 90 can provide the lamp socket (figure does not show) of a direct current power supply 60 (Fig. 2) or an AC power 70 (Fig. 5) to be screwed together through this joint 40 and, thereby makes light source 10 obtain the power supply of this dc source 60 or AC power 70.
As shown in Figure 2, be the sketch map of this LED lighting device 90 through the lighting circuit 100 of joint 40 these dc sources 60 of connection.The positive and negative electrode of a said LED121 is connected each other and is formed the first lamp string 101, and the positive and negative electrode of said the 2nd LED123 is connected each other and formed the second lamp string 102.The positive pole of said first, second lamp string 101,102 is connected with the positive pole of this dc source 60 respectively, and a variable resistance 80 and the first lamp string 101 are connected in series.Concrete, this variable resistance 80 is connected between the negative pole of negative pole and dc source 60 of the first lamp string 101, and the negative pole of the second lamp string 102 is connected with the negative pole of dc source 60.Wherein, the slide plate 81 of this variable resistance 80 is connected with adjusting button 50 in the LED lighting device 90.During use; Carry over opening 36 through the adjusting button 50 of stirring this LED lighting device 90 and slide up and down the position of regulating the slide plate 81 on this variable resistance 80; To change the resistance size of this variable resistance 80; Thereby change the size of the electric current of the first lamp string 101 of flowing through, reach the purpose of regulating a LED121 luminous intensity in this first lamp string 101.Since the light that sends of this LED lighting device 90 be a LED121 sends in the first lamp string 101 light with the second lamp string 102 in the mixing of the light that sends of the 2nd LED123; Therefore; When the luminous intensity of a LED121 dies down; The colour temperature of the light that LED lighting device 90 sends reduces, and when the luminous intensity grow of a LED121, the colour temperature of the light that LED lighting device 90 sends increases.
Shown in Figure 3 is second embodiment of the circuit 200 of LED lighting device, its with first embodiment in the different of circuit 100 be: this variable resistance 80 and the second lamp string 102 are connected in series.Variable resistance 80 is connected between the negative pole of negative pole and dc source 60 of the second lamp string 102.Therefore; The direction that carries over opening 36 extensions through the adjusting button 50 of stirring this LED lighting device 90 slides up and down; Can change the size of the electric current of the second lamp string 102 in this LED lighting device 90 of flowing through, reach the purpose of regulating the luminous intensity of the 2nd LED123 in this second lamp string 102.When the luminous intensity of said the 2nd LED123 died down, the colour temperature of LED lighting device 90 emergent lights increased, and when the luminous intensity grow of the 2nd LED123, the colour temperature of LED lighting device 90 emergent lights reduces.
Shown in Figure 4 is the 3rd embodiment of the circuit 300 of this LED lighting device.Wherein, the positive and negative electrode of a said LED121 is connected each other and is formed the first lamp string 101, and the positive and negative electrode of said the 2nd LED123 is connected each other and formed the second lamp string 102.The positive pole of said first, second lamp string 101,102 is connected with the positive pole of dc source 60 respectively, and the binding post of an end of this variable resistance 80 is connected with the negative pole of dc source 60, and the slide plate 81 of variable resistance 80 is connected with a switch 85.This switch 85 comprises first contact 86 that can be connected with the negative pole of the first lamp string 101 respectively and second contact 88 that is connected with the negative pole of the second lamp string 102.The slide plate 81 of this variable resistance 80 is connected with adjusting button 50.Adopt the LED lighting device 90 of this circuit 300 also to be provided with a selector button 55 (Fig. 1) that is connected with this switch 85.
During use; At first make switch 85 be electrically connected with first contact 86 or be electrically connected with second contact 88 through pushing selector button 55; Thereby make this variable resistance 80 and the first lamp string 101 or the second lamp string 102 be connected in series; Then, stir that this adjusting button 50 carries over that direction that opening 36 extends slides up and down and the position of regulating the slide plate 81 on this variable resistance 80, with the size of the resistance that changes this variable resistance 80; Thereby change the size of the electric current of flow through this first lamp string 101 or the second lamp string 102, reach the purpose of the luminous intensity of regulating this first lamp string 101 or the second lamp string 102.When this switch 85 is electrically connected with first contact 86; Form the loop between the first lamp string 101 and variable resistance 80 and the dc source 60; Open a way and form between the second lamp string 102 and the dc source 60; Therefore, the light that this LED lighting device 90 sends is the light that the first lamp string 101 is sent, and promptly the colour temperature of the light that sends of this LED lighting device 90 is higher; When switch 85 is electrically connected with second contact 88; This second lamp string 102 and variable resistance 80 and dc source 60 formation loops; Open a way and form between the first lamp string 101 and the dc source 60; Therefore, the light that this LED lighting device 90 sends is the light that the second lamp string 102 is sent, and promptly the colour temperature of the light that sends of this LED lighting device 90 is lower.
Be illustrated in figure 5 as the 4th embodiment of the circuit 400 of this LED lighting device; Its with first embodiment in the different of LED lighting circuit 100 be: therefore this LED lighting device 90 is used to connect AC power 70, and the first lamp string 101 is that the reversed polarity end is parallelly connected with the second lamp string 102.Particularly, the positive pole of this first lamp string 101 is connected with an end of AC power 70 respectively with the negative pole of the second lamp string 102, and this variable resistance 80 and the first lamp string 101 are connected in series.Concrete, this variable resistance 80 is connected between the other end of negative pole and AC power 70 of the first lamp string 101, and the positive pole of the second lamp string 102 is connected with the other end of AC power 70.Wherein, it is identical that this variable resistance 80 is regulated among mode and first embodiment of colour temperature of these LED lighting device 90 emergent lights LED lighting circuit 100, repeats no more at this.
Shown in Figure 6 is the 5th embodiment of the circuit 500 of this LED lighting device, its with the 4th embodiment in the different of lighting circuit 300 be: this variable resistance 80 and the second lamp string 102 are connected in series.Variable resistance 80 is connected between the other end of negative pole and AC power 70 of the second lamp string 102.It is identical that said switch 85 and variable resistance 80 regulated among mode and the 4th embodiment of colour temperature of the light that these LED lighting devices 90 send LED lighting circuit 300, repeats no more at this.
In sum; Be provided with the variable resistance 80 that is connected in series with the first lamp string 101 or the second lamp string 102 in the circuit 100,200,300,400,500 of this LED lighting device; And LED lighting device 90 comprises the adjusting button 50 that is used for regulating this variable resistance 80 resistances size; Slide up and down the size of current of regulating in flow through this first lamp string 101 or the second lamp string 102 through stirring adjusting button 50, thus the colour temperature of regulating these LED lighting device 90 emergent lights.
During practical implementation; Also can be provided with two variable resistances 80 that are connected in series with the first lamp string 101 respectively and are connected in series with the second lamp string 102 in the circuit 100,200,300,400,500 of said this LED lighting device, and this LED lighting device 90 comprises and is respectively applied for two adjusting buttons 50 regulating resistance size in the said variable resistance 80.In addition, the form that said adjusting button 50 is not limited in the above embodiment of the present invention to be limited, it also can be turnbutton.
Claims (9)
1. LED lighting device; Comprise the first lamp string and the second lamp string that are connected in parallel; Each lamp string comprises at least one LED of mutual serial connection, it is characterized in that: this LED lighting device also comprise with the said first lamp string and the second lamp string in one of them variable resistance that is connected in series at least, the position of the slide plate through changing this variable resistance; Thereby change the size of the electric current of the corresponding lamp string that is connected in series of flowing through, with the colour temperature of the light of adjusting this LED lighting device with this variable resistance.
2. LED lighting device as claimed in claim 1; It is characterized in that: the positive pole of the said first lamp string and the second lamp string is connected with the positive pole of a direct current power supply; The negative pole of the said first lamp string and the second lamp string is connected with the negative pole of this dc source, and this variable resistance is connected in series on the first lamp string.
3. LED lighting device as claimed in claim 1; It is characterized in that: the positive pole of the said first lamp string and the second lamp string is connected with the positive pole of a direct current power supply; The negative pole of the said first lamp string and the second lamp string is connected with the negative pole of this dc source, and this variable resistance is connected in series on the second lamp string.
4. LED lighting device as claimed in claim 1; It is characterized in that: the said first lamp string is connected with a direct current power supply with the second lamp string; This LED lighting device also comprises the switch that is connected with the slide plate of this variable resistance; This switch comprises respectively second contact that first contact that connects with first lamp polyphone and second lamp polyphone connect, and this switch selectively is electrically connected with first contact or second contact, thus make the variable resistance and the first lamp string perhaps the second lamp string be connected in series.
5. LED lighting device as claimed in claim 1; It is characterized in that: the negative pole of the positive pole of the said first lamp string and the second lamp string is connected with an end of an AC power; The positive pole of the negative pole of the said first lamp string and the second lamp string is connected with the other end of this AC power, and this variable resistance is connected in series on the first lamp string.
6. LED lighting device as claimed in claim 1; It is characterized in that: the negative pole of the positive pole of the said first lamp string and the second lamp string is connected with an end of an AC power; The positive pole of the negative pole of the said first lamp string and the second lamp string is connected with the other end of this AC power, and this variable resistance is connected in series on the second lamp string.
7. like any described LED lighting device of claim 1 to 6; It is characterized in that: also comprise and the hot radiator that is connected of this light source; This radiator is provided with the opening of a strip; This adjusting button is contained in the opening and can carries over this opening and slides, and stirs that this adjusting button slides and the position that changes the slide plate of this variable resistance in opening.
8. LED lighting device as claimed in claim 7 is characterized in that: this radiator is provided with a selector button, and this selector button is used to control this variable resistance and the first lamp string or the second lamp string and is connected in series.
9. like any described LED lighting device of claim 1 to 6, it is characterized in that: the colour temperature of the LED emitted light in this first lamp string is greater than the colour temperature of the LED emitted light in this second lamp string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102446502A CN102345806A (en) | 2010-08-04 | 2010-08-04 | LED (light emitting diode) illumination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102446502A CN102345806A (en) | 2010-08-04 | 2010-08-04 | LED (light emitting diode) illumination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102345806A true CN102345806A (en) | 2012-02-08 |
Family
ID=45544738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102446502A Pending CN102345806A (en) | 2010-08-04 | 2010-08-04 | LED (light emitting diode) illumination device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102345806A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883911A (en) * | 2014-04-11 | 2014-06-25 | 江苏达伦电子股份有限公司 | Heat-radiation type LED bulb lamp |
| CN104344374A (en) * | 2013-07-26 | 2015-02-11 | 展晶科技(深圳)有限公司 | Light-emitting diode lighting device |
| CN104747940A (en) * | 2015-03-23 | 2015-07-01 | 安徽兆利光电科技有限公司 | LED lamp with luminance adjusting device |
| CN109724059A (en) * | 2017-10-31 | 2019-05-07 | 上海永朗照明科技有限公司 | A kind of intensity adjustable LED bay light |
| CN110087365A (en) * | 2019-05-24 | 2019-08-02 | 深圳迪亚士照明科技有限公司 | A kind of brightness colour temperature synchronous adjustment flexible LED lamp bar circuit and soft light bar |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344374A (en) * | 2013-07-26 | 2015-02-11 | 展晶科技(深圳)有限公司 | Light-emitting diode lighting device |
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| CN103883911A (en) * | 2014-04-11 | 2014-06-25 | 江苏达伦电子股份有限公司 | Heat-radiation type LED bulb lamp |
| CN104747940A (en) * | 2015-03-23 | 2015-07-01 | 安徽兆利光电科技有限公司 | LED lamp with luminance adjusting device |
| CN104747940B (en) * | 2015-03-23 | 2018-12-07 | 安徽兆利光电科技有限公司 | A kind of LED light with brightness regulating apparatus |
| CN109724059A (en) * | 2017-10-31 | 2019-05-07 | 上海永朗照明科技有限公司 | A kind of intensity adjustable LED bay light |
| CN110087365A (en) * | 2019-05-24 | 2019-08-02 | 深圳迪亚士照明科技有限公司 | A kind of brightness colour temperature synchronous adjustment flexible LED lamp bar circuit and soft light bar |
| CN110087365B (en) * | 2019-05-24 | 2024-05-24 | 深圳迪亚士照明科技有限公司 | Light Emitting Diode (LED) soft lamp strip circuit for synchronously adjusting brightness and color temperature and soft lamp strip |
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20120208 |
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| C20 | Patent right or utility model deemed to be abandoned or is abandoned |