CN101649973A - Automatic temperature control LED hose lamp - Google Patents
Automatic temperature control LED hose lamp Download PDFInfo
- Publication number
- CN101649973A CN101649973A CN200910084144A CN200910084144A CN101649973A CN 101649973 A CN101649973 A CN 101649973A CN 200910084144 A CN200910084144 A CN 200910084144A CN 200910084144 A CN200910084144 A CN 200910084144A CN 101649973 A CN101649973 A CN 101649973A
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- China
- Prior art keywords
- led
- intestines
- hose lamp
- lamp
- fluorescent tube
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses an automatic temperature control LED hose lamp comprising a light transmittable lamp tube, a flexible inner tube, a lamp body and an automatic temperature control circuit. Theautomatic temperature control circuit is adopted for dynamically regulating the work current of the hose lamp and preventing the excessively fast temperature rise. The flexible inner tube is adopted for facilitating the repair of the hose lamp.
Description
Technical field
The present invention relates to the application that a kind of LED shows, specifically, relate to a kind of automatic temperature-controlled LED hose lamp.
Background technology
The LED hose lamp of institute's extensive use in the market, it is commonly: with light emitting diode R, G, the B (R is that red light emitting diodes, B are that blue LED, G are green LED) of three kinds of colors, elementary cell as a luminous point, i.e. pixel, and form a hose lamp by plastic packaging, encapsulating.Be elementary cell with R, G, B hose lamp then, be combined into pattern and realize the night scene decoration, perhaps form LED display and finish Presentation Function.
Mainly there is following shortcoming in prior art:
Existing in addition hose lamp at first, brings the bad problem of heat radiation easily because plastic material inside is fixed, is sealed in to the LED lamp body, and hot-spot causes potential safety hazard; Secondly, lamp body can only be changed in case damage can't be repaired.
Summary of the invention
Technical problem to be solved by this invention is at the deficiencies in the prior art, and a kind of automatic temperature-controlled LED hose lamp is provided.
Technical scheme of the present invention is as follows:
A kind of automatic temperature-controlled LED hose lamp comprises printing opacity fluorescent tube, flexible interior intestines, lamp body, automatic temperature-controlled circuit;
Described printing opacity fluorescent tube sealing is wrapped in intestines outside in the described flexibility;
Intestines inside is provided with the perforation cavity in the described flexibility;
Described lamp body places intestines cavity inside in the described flexibility;
Described lamp body comprises: the flexible PCB plate, be arranged on the LED luminescence unit on the flexible PCB plate, and comprise at least one LED lamp and be arranged on the luminous chip of control LED luminescence unit on the flexible PCB plate;
At least comprise in the described chip that drives a chip;
Described driving chip comprises an outer meeting resistance input and at least one drive output, and described outer meeting resistance input is used to be provided with output current, and it is luminous that described drive output is used to drive described LED luminescence unit;
Described automatic temperature-controlled circuit comprises a semistor and a current-limiting resistance, and described thermistor and current-limiting resistance are connected between described outer meeting resistance input and the ground, and described thermistor and described current-limiting resistance are arranged on the described pcb board;
Described LED hose lamp, the curie point of described thermistor are 50 degrees centigrade to 80 degrees centigrade.
Described LED hose lamp, the curie point of described thermistor are 60 degrees centigrade.
Described LED hose lamp, it is the resistor of 100 Ω-700 Ω that described current-limiting resistance adopts resistance.
Described LED hose lamp, described printing opacity fluorescent tube inside is provided with at least one fin along described printing opacity fluorescent tube extension, the intestines outside is provided with the groove that at least one fin size that extend along intestines in the described flexibility and described cooperates in the described flexibility, and described fin and described groove fit flexibly connect.
Described LED hose lamp, described printing opacity fluorescent tube inside is provided with at least one groove along described printing opacity fluorescent tube extension, the intestines outside is provided with the fin that at least one groove size that extend along intestines in the described flexibility and described cooperates in the described flexibility, and described fin and described groove fit flexibly connect.
Described LED hose lamp longitudinally is provided with a straight line otch at described perforation cavity outer wall.
Described LED hose lamp longitudinally is provided with a curvilinear cut at described perforation cavity outer wall.
Described LED hose lamp, place, two composition surfaces of described otch is provided with the fixed engagement parts.
Described LED hose lamp, each described drive output connect respectively and control a LED lamp.
As can be seen from the above technical solutions, the present invention has following beneficial effect:
When 1, temperature raise, the thermistor resistance raise, and the drive current of drive output descends thereupon, alleviated the hose lamp temperature and raise, and can realize the automatic temperature-controlled function of hose lamp.
2, the employing curie point is 50 ℃-80 ℃ a thermistor, when the hose lamp temperature is lower than 50 ℃-80 ℃, the thermistor resistance is constant, output driving current can not change, hose lamp can steady operation, is elevated to 50 ℃ more than-80 ℃ the time in the hose lamp temperature, and the thermistor resistance significantly raises, drive current significantly reduces, and the hose lamp temperature decreases or no longer continues and raises.
3, realize single lamp brilliance control, conveniently the brightness of each lamp point is proofreaied and correct, realize better white balance effect.
4, hose lamp inside is provided with cavity, satisfies the heat radiation needs, and the cavity outer wall is provided with otch, and when breaking down in hose lamp, it can be taken apart and repair.
Description of drawings
Fig. 1 is the structural representation of hose lamp of the present invention;
Fig. 2 is one of lamp body structure schematic diagram of hose lamp of the present invention;
Fig. 3 is semistor resistance one temperature variation curve of the present invention;
Fig. 4 is the sectional view of hose lamp of the present invention;
Fig. 5 is one of structural representation of intestines in the hose lamp flexibility of the present invention;
Fig. 6 be intestines in the hose lamp flexibility of the present invention structural representation two;
Fig. 7 is the partial structurtes schematic diagram of intestines otch in the hose lamp flexibility of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As depicted in figs. 1 and 2, a kind of automatic temperature-controlled LED hose lamp comprises printing opacity fluorescent tube 101, flexible interior intestines 102, lamp body 105 and automatic temperature-controlled circuit 100; Printing opacity fluorescent tube 101 can adopt thermoplastic flame-proof ambroin PVC with flexible interior intestines, printing opacity fluorescent tube 101 sealings are wrapped in flexible interior intestines 102 outsides, intestines 102 inside are provided with a cavity 103 in flexible, the present embodiment cavity is shaped as semicircle, also can for other shapes such as rectangle, triangle etc., lamp body 105 place flexible in cavity 103 inside of intestines 102, lamp body comprises: the flexible PCB plate, be arranged on LED luminescence unit on the flexible PCB plate, be arranged on the luminous chip of control LED luminescence unit on the flexible PCB plate; The LED luminescence unit comprises at least one LED lamp, lamp body also comprises at least one chip, it is luminous that this chip is used to control the LED luminescence unit, at least include one in the chip and drive chip, this driving chip comprises an outer meeting resistance input (R_EXT) and an at least one drive output, described outer meeting resistance input is used for being provided with according to the size of resistance the size of drive output output current, and computing formula is I
OUT=V
R_EXT/ (R1+R2), described drive output output drive signal is given described LED luminescence unit, and control LED luminescence unit is luminous;
Automatic temperature-controlled circuit 100 comprises a semistor R2 and a current-limiting resistance R1, be connected between described outer meeting resistance input (R_EXT) and the ground (GND) behind the R1 series connection R2, described thermistor and described current-limiting resistance are arranged on the described pcb board, can detect the variations in temperature of pcb board peripheral devices (chip, LED lamp etc.); The heat dissipation metal face shield is fixedly connected on the pcb board, and the heat dissipation metal face shield can use heat-conducting metal die casting to form the latticed face shield (shown in Fig. 1-B) that holds the LED lamp, and is separate between each grid.Use semistor can make the operating current of hose lamp like this, under certain condition, along with temperature raises and reduces, reduced the cause thermal damage fault rate of hose lamp, use the heat dissipation metal face shield that the heat of chip in the hose lamp and the generation of LED lamp is conducted by louvre, avoid parts to cross cause thermal damage.
An example, a fin 104 that extends along printing opacity fluorescent tube 101 can also be set in printing opacity fluorescent tube 101 inside, intestines 102 outsides are provided with at least one groove that cooperates with the fin size that extend along flexible interior intestines in flexible, fin 104 is connected with groove fit, the relative position of intestines 102 and printing opacity fluorescent tube 101 in the fixing flexible, in like manner, also can be provided with at least one groove in printing opacity fluorescent tube 101 inside along the extension of printing opacity fluorescent tube, the intestines outside is provided with at least one fin that cooperates with the fin size that extend along flexible interior intestines in flexible, and fin is connected with groove fit.Because closely cooperating of groove and fin makes flexible interior intestines and printing opacity fluorescent tube to reach and pastes clothes fully, the effect of difficult drop-off, and relative rotation can not take place with the printing opacity fluorescent tube in intestines in flexible, causes the circuit damage.
Another example, above-mentioned LED hose lamp also comprises a diffusion layer, such as using transparent resin material, generates a large amount of intensive trickle bubbles through high-speed stirred or other technology; Or the mixture of a large amount of intensive glass microballoons and transparent resin lacquer, form through solidifying fast, above-mentioned material is filled in cavity part between flexible interior intestines and the lamp body.Adopt diffusion layer can make the soft light lamp wiring soft evenly, good visual effect.
Another example, above-mentioned LED hose lamp, each signal output part connects a monochromatic LED lamp on the chip, realizes the red, green, blue look LED lamp on the hose lamp is carried out independently single lamp brightness adjustment, the higher grey level of convenient realization.
Be illustrated in figure 2 as a kind of circuit structure of automatic temperature-controlled hose lamp in application, drive chip and adopt the constant-current driven chip that has three drive output OUT1, OUT2 and OUT3, these chip 13 pins are outer meeting resistance input R_EXT, by its constant current output of size adjustment OUT1, the OUT2 of the resistance that this pin connected and the output current size of OUT3, formula is I
OUT=V
R_EXT/ (R1+R2), V wherein
R_EXTVoltage for the R_EXT pin, R1 is the resistance of current-limiting resistance, R2 is the resistance of thermistor, and the LED luminescence unit is made up of a red light emitting diodes R, green LED G, blue LED B and resistance R 1, R2, R3, and the LED lamp is connected with R1, R2, R3 respectively; Positive source circuit VCC and power cathode circuit GND provide voltage to circuit; Last level controlling system tranmitting data register signal (CKIN), enable signal (OEIN), be written into signal (LIN) and data-signal (DIN), luminous by drive output OUT1, OUT2 and OUT3 output drive signal control LED luminescence unit; Drive chip and also have the indication end of reporting an error ERR, when the driving chip breaks down, chip sends to indicating member by the indication end ERR (not shown) that reports an error with rub-out signal, such as LED light warning, buzzer warning, the attendant promptly knows abort situation according to the indication of LED lamp or the voice signal of buzzer, convenient maintenance.
On the basis of the various embodiments described above, present embodiment preferably adopts positive temperature coefficient (PTC, positive temperature coefficient) thermal resistor R2, as shown in Figure 3, resistance-temperature curve for positive temperature coefficient thermistor, because it is 50 ℃ to 80 ℃ (shown in A point among the figure and C points) that LED lamp and LED drive the preferable operating temperature of chip, be higher than 80 ℃ of danger that damage is then arranged, therefore be elevated to before 80 ℃ in temperature, must control temperature, therefore preferred employing curie point is 50 ℃ to 80 ℃, and best is the PTC themistor of 60 ℃ (shown in B points among the figure).
Semistor a kind of, its resistance value of semistor is along with the rising of PTC thermistor body temperature presents the increase of step evolution, and temperature is high more, and resistance value is big more, and the PTC themistor that generally adopts generally is by B at present
aTiO
3Material for principal crystalline phase; add the sensitive ceramic element of a spot of rare earth element through high temperature sintering; when this material rose to the curie point starting point of temperature characterisitic (positive be called curie point) in temperature, its resistance can increase with exponential form, thereby circuit is limited and protects.
Preferably, it is the resistor of 100 Ω to 700 Ω that current-limiting resistance R1 adopts resistance, because under the normal temperature, the resistance of thermal resistor is about 300 Ω, with after R1 connects, forming a resistance is the current-limiting resistance combination of 400 Ω to 1K Ω like this, and driving chip 13 pin voltages is V
R_EXT, such as V
R_EXTFor about 18.8V, drive so under the output normal temperature of chip and can obtain 18 milliamperes to 50 milliamperes drive current, satisfy the needs of high-brightness LED.
Adopt PTC themistor like this, when temperature was elevated to curie point in the hose lamp, the resistance of thermal resistor R2 sharply raise, and the output current that drive drives chip reduces, and played the effect that the control temperature continues rising, prevented the overheated damage of device.
Fig. 4 is a kind of sectional view of hose lamp, the fluorescent tube inside, printing opacity fluorescent tube 101 upper edge of this hose lamp vertically is provided with five trapezoidal grooves, intestines 104 outsides longitudinally are provided with equal number in flexible, identical shaped and big or small trapezoidal fin, this fin is connected with groove fit, the inner semicircular cavities that forms of intestines in flexible, the flexible PCB plate that has LED luminescence unit and chip places in the above-mentioned semicircular cavity, the benefit of this kind structure setting is, the better position of intestines 104 and printing opacity fluorescent tube 101 in the fixing flexible, and then the fixing position of luminescence unit 105, avoid luminescence unit 105 intestines 104 internal torsion in flexible, avoid flexible interior intestines 104 in printing opacity fluorescent tube internal torsion.
As shown in Figure 5, the inside of intestines 102 is provided with and connects cavity 103 in flexible, at described perforation cavity 103 outer walls one straight line otch 1061 is set longitudinally, usually this interface can be bonding with materials such as viscous adhesive under the state, and when lamp body 105 was installed, this otch can be raised, handled easily, and hose lamp interior lamp point or chip occur under the irreversible damaged condition, can pass through this otch, take hose lamp reparation apart.
As shown in Figure 6, for the bond strength and the fixing that increase otch, described otch is set to curvilinear cut 1062, and curvilinear cut can increase bonded area, improves intensity.
As shown in Figure 7, place, two composition surfaces at above-mentioned otch is provided with the fixed engagement parts, these secure bond parts comprise 1071 and 1072, wherein 1071 is the bulbous protrusion thing, 1072 is spherical groove, certain 1071 and 1072 also can for other can secure bond shape, such as the elasticity plug connector etc., so further increased flexible in the intensity of intestines 102.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (10)
1, a kind of automatic temperature-controlled LED hose lamp is characterized in that: comprise printing opacity fluorescent tube, flexible interior intestines, lamp body, automatic temperature-controlled circuit;
Described printing opacity fluorescent tube sealing is wrapped in intestines outside in the described flexibility;
Intestines inside is provided with the perforation cavity in the described flexibility;
Described lamp body places intestines cavity inside in the described flexibility;
Described lamp body comprises: the flexible PCB plate, be arranged on the LED luminescence unit on the flexible PCB plate, and comprise at least one LED lamp and be arranged on the luminous chip of control LED luminescence unit on the flexible PCB plate;
At least comprise in the described chip that drives a chip;
Described driving chip comprises an outer meeting resistance input and at least one drive output, and described outer meeting resistance input is used to be provided with output current, and it is luminous that described drive output is used to drive described LED luminescence unit;
Described automatic temperature-controlled circuit comprises a semistor and a current-limiting resistance, and described thermistor and current-limiting resistance are connected between described outer meeting resistance input and the ground, and described thermistor and described current-limiting resistance are arranged on the described pcb board.
2, LED hose lamp according to claim 1 is characterized in that, the curie point of described thermistor is 50 degrees centigrade to 80 degrees centigrade.
3, LED hose lamp according to claim 1 is characterized in that, the curie point of described thermistor is 60 degrees centigrade.
4, LED hose lamp according to claim 1 is characterized in that, it is the resistor of 100 Ω-700 Ω that described current-limiting resistance adopts resistance.
5, LED hose lamp according to claim 1, it is characterized in that, described printing opacity fluorescent tube inside is provided with at least one fin along described printing opacity fluorescent tube extension, the intestines outside is provided with the groove that at least one fin size that extend along intestines in the described flexibility and described cooperates in the described flexibility, and described fin and described groove fit flexibly connect.
6, LED hose lamp according to claim 1, it is characterized in that, described printing opacity fluorescent tube inside is provided with at least one groove along described printing opacity fluorescent tube extension, the intestines outside is provided with the fin that at least one groove size that extend along intestines in the described flexibility and described cooperates in the described flexibility, and described fin and described groove fit flexibly connect.
7, LED hose lamp according to claim 1 is characterized in that, at described perforation cavity outer wall one straight line otch is set longitudinally.
8, LED hose lamp according to claim 1 is characterized in that, at described perforation cavity outer wall one curvilinear cut is set longitudinally.
9, LED hose lamp according to claim 8 is characterized in that, place, two composition surfaces of described otch is provided with the fixed engagement parts.
10, LED hose lamp according to claim 1 is characterized in that, each described drive output connects respectively and controls a LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910084144A CN101649973A (en) | 2009-05-20 | 2009-05-20 | Automatic temperature control LED hose lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910084144A CN101649973A (en) | 2009-05-20 | 2009-05-20 | Automatic temperature control LED hose lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101649973A true CN101649973A (en) | 2010-02-17 |
Family
ID=41672266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910084144A Withdrawn CN101649973A (en) | 2009-05-20 | 2009-05-20 | Automatic temperature control LED hose lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101649973A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104050929A (en) * | 2014-07-10 | 2014-09-17 | 广东威创视讯科技股份有限公司 | LED control device and LED display screen |
| CN110312894A (en) * | 2017-02-17 | 2019-10-08 | 株式会社小糸制作所 | Lighting device |
| CN115294926A (en) * | 2022-09-26 | 2022-11-04 | 惠科股份有限公司 | Driving circuit, driving method, display device, and medium |
-
2009
- 2009-05-20 CN CN200910084144A patent/CN101649973A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104050929A (en) * | 2014-07-10 | 2014-09-17 | 广东威创视讯科技股份有限公司 | LED control device and LED display screen |
| CN110312894A (en) * | 2017-02-17 | 2019-10-08 | 株式会社小糸制作所 | Lighting device |
| CN115294926A (en) * | 2022-09-26 | 2022-11-04 | 惠科股份有限公司 | Driving circuit, driving method, display device, and medium |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |