CN206669552U - A kind of automobile LED lighting device of band NTC temperature protections - Google Patents
A kind of automobile LED lighting device of band NTC temperature protections Download PDFInfo
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- CN206669552U CN206669552U CN201720345218.XU CN201720345218U CN206669552U CN 206669552 U CN206669552 U CN 206669552U CN 201720345218 U CN201720345218 U CN 201720345218U CN 206669552 U CN206669552 U CN 206669552U
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- led light
- heat
- conducting substrate
- lighting device
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Abstract
A kind of automobile LED lighting device of band NTC temperature protections, described LED light device top sets fan and radiator fin device, connection control device below fan and fin, heat-conducting substrate is set inside control device, heat-conducting substrate is fixed on control device by being arranged on the fixed screw of inside, LED light source is set on heat-conducting substrate, above LED light source, NTC resistance is added on heat-conducting substrate, NTC resistance is connected by control line with the LED drive control modules being arranged on outside LED light device, the other end of LED drive control modules is connected by power line with power interface, under the conditions of the radiating of automobile LED lighting device is normal, the work of LED light device is not influenceed completely;Radiated in automobile LED lighting device under exceptional condition, stable work can be continued according to default LED light source operating temperature, so as to overcome existing LED light device because radiate it is bad cause suddenly damage after automobile can not normally night running situation simultaneously, decrease therefore caused by traffic accident generation.
Description
Technical field
The technical field of the temperature protective device of automotive lighting is the utility model is related to, more particularly to a kind of band NTC temperature
The automobile LED lighting device of protection.
Background technology
At present, the radiating of automobile LED illuminator is all the mode by 12V DC small fan or increase fin, by
Lighting device outer surface is exposed to when fan or fins act, it is completely identical with the external environment condition of running car,
So becoming easily infected by dust or mud and the radiating effect of initial design can not be kept, LED light source temperature is caused gradually to rise
Height, or even quick-fried lamp occurs and thoroughly damages, so as to have a strong impact on safety during particularly driving at night.
Utility model content
In order to solve the above problems, the utility model provides a kind of automobile LED lighting device of band NTC temperature protections,
The device does not influence the work of LED light device completely under the conditions of the radiating of automobile LED lighting device is normal;In automobile
Under LED light device radiating exceptional condition, stable work can be continued according to default LED light source operating temperature, so as to
Overcome existing LED light device because radiate it is bad cause automobile after damage suddenly can not normal night running situation it is same
When, traffic accident occurs caused by decreasing therefore.
In order to achieve the above object, the utility model uses following technological improvement：
A kind of automobile LED lighting device of band NTC temperature protections, mainly driven and controlled by lighting device, NTC resistance and LED
Molding block three parts form；Described LED light device top sets fan and radiator fin device, connects below fan and fin
Control device is connect, heat-conducting substrate is set inside control device, heat-conducting substrate is fixed on control by being arranged on the fixed screw of inside
On device processed, LED light source is set on heat-conducting substrate, adds NTC resistance on LED light source top, heat-conducting substrate, NTC resistance passes through
Control line is connected with the LED drive control modules being arranged on outside LED light device, and the other end of LED drive control modules leads to
Power line is crossed with power interface to be connected.
Described control line not only connects NTC resistance and LED drive control modules, while controls fan and radiate on chip
Put.
Pin6 on the circuit board of described LED light device：Vcc is output end of pressure-stabilizing inside IC, and representative value is
5.0V；Pin3 on the circuit board of heat-conducting substrate：EN/DIM, it is a Multifunctional foot.
The temperature protection point of the circuit board of described LED light device is set by resistance R1.
The utility model passes through above-mentioned technological improvement, has reached following beneficial effect：
Under the conditions of the radiating of automobile LED lighting device is normal, the work of LED light device is not influenceed completely;In vapour
Under car LED light device radiating exceptional condition, stable work can be continued according to default LED light source operating temperature, from
And overcome existing LED light device because radiate it is bad cause automobile after damage suddenly can not normal night running situation it is same
When, traffic accident occurs caused by decreasing therefore.
Brief description of the drawings
In figure, power interface -1, power line -2, LED drive module -3, fan and radiator fin device -4, heat conduction base
Plate (PCB) -5, NTC resistance -6, LED light source -7, fixed screw -8, control line -9.
Fig. 1 is a kind of structural representation of the automobile LED lighting device of band NTC temperature protections of the utility model；
Fig. 2 is a kind of automobile LED illuminator structure top view of band NTC temperature protections of the utility model；
Fig. 3 is a kind of automobile LED lighting device of band NTC temperature protections of the utility model
Fig. 4 is a kind of automobile LED lighting device of band NTC temperature protections of the utility model.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is described further：
A kind of automobile LED lighting device of band NTC temperature protections, mainly driven and controlled by lighting device, NTC resistance 6 and LED
The three parts of molding block 3 form；Described LED light device top sets fan and radiator fin device 4, fan and radiator fin device
4 lower section connection control devices, control device inside set heat-conducting substrate 5, and heat-conducting substrate 5 is by being arranged on internal fixed screw
8 are fixed on control device, and LED light source 7 is set on heat-conducting substrate 5, NTC electricity is added on the top of LED light source 7, heat-conducting substrate 5
6, NTC of resistance resistance 6 is connected by control line 9 with the LED drive control modules 3 being arranged on outside LED light device, LED drivings
The other end of control module 3 is connected by power line 2 with power interface 1.
Described control line 9 not only connects NTC resistance 6 and LED drive control modules 3, while controls fan and fin
Device 4.
Pin6 on the circuit board of described LED light device：Vcc is output end of pressure-stabilizing inside IC, and representative value is
5.0V；Pin3 on the circuit board of heat-conducting substrate：EN/DIM, it is a Multifunctional foot.
The temperature protection point of the circuit board of described LED light device is set by resistance R1.
Embodiment：
Specified 12 ~ 24Vdc voltages are accessed in power interface -1, are powered by power line -2 to LED drive module -3,
After DC converting (DC/DC), LED light source -7 is according to the default operating current start-up operation of LED drive module -3
When outside condition of work causes the radiating of LED light device to occur abnormal, as fin is dirty or fan
Shut down now, the temperature of LED light source -7 will rise, and heat-conducting substrate (PCB) temperature will also follow rising, what this rose
Temperature will cause the resistance of NTC resistance-6 that corresponding change drives of the by the LED drive module of control line-9-3 occurs
Dynamic output LED operation electric current reduces, and the operating current of reduction causes the temperature of LED light source -7 to reduce and constant in a LED light
Damages so as to avoid LED light source -7 caused by radiating is bad in the acceptable safe range of source -7
Such as Fig. 3：
When Pin3 voltages can just cause IC to work under direct current light-modulating mode higher than 0.3V, Pin3 voltage range is
0.3V ~ 2.7V, corresponding dimming scope are 20% ~ 100%;
When NTC1 is not accessed, Pin3 voltages are caused to be more than 2.7V because R1 resistance pull-up acts on, so, LED
100% output
After NTC1 is accessed, because NTC is in negative temperature coefficient, diminish with the rise resistance of LED temperature so that
Pin3 voltages decline and are into direct current light-modulating mode after Pin3 voltages enter 0.3V ~ 2.7V scopes, namely enter temperature and protect
Shield pattern;
It is the known technology of those skilled in the art in addition to the technical characteristic described in description above.
Claims (4)
1. a kind of automobile LED lighting device of band NTC temperature protections, mainly driven and controlled by lighting device, NTC resistance (6) and LED
Molding block (3) three parts form；It is characterized in that：Described LED light device top sets fan and radiator fin device (4),
Connection control device below fan and radiator fin device (4), control device inside set heat-conducting substrate (5), and heat-conducting substrate (5) leads to
Cross be arranged on inside fixed screw (8) be fixed on control device, on heat-conducting substrate (5) set LED light source (7), LED light source
(7) NTC resistance (6) is added on top, heat-conducting substrate (5), NTC resistance (6) is by control line (9) and is arranged on LED illumination
LED drive control modules (3) outside device are connected, and the other end of LED drive control modules (3) passes through power line (2) and electricity
Source interface (1) is connected.
A kind of 2. automobile LED lighting device of band NTC temperature protections according to claim 1, it is characterised in that：Described
Control line (9) not only connects NTC resistance (6) and LED drive control modules (3), while controls fan and radiator fin device (4).
A kind of 3. automobile LED lighting device of band NTC temperature protections according to claim 1, it is characterised in that：LED shines
Pin6 on the circuit board of bright device：Vcc is output end of pressure-stabilizing inside IC, and representative value is 5.0V；On the circuit board of heat-conducting substrate
Pin3：EN/DIM, it is a Multifunctional foot.
A kind of 4. automobile LED lighting device of band NTC temperature protections according to claim 3, it is characterised in that：LED shines
The temperature protection point of the circuit board of bright device is set by resistance R1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720345218.XU CN206669552U (en) | 2017-04-05 | 2017-04-05 | A kind of automobile LED lighting device of band NTC temperature protections |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720345218.XU CN206669552U (en) | 2017-04-05 | 2017-04-05 | A kind of automobile LED lighting device of band NTC temperature protections |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206669552U true CN206669552U (en) | 2017-11-24 |
Family
ID=60366719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720345218.XU Expired - Fee Related CN206669552U (en) | 2017-04-05 | 2017-04-05 | A kind of automobile LED lighting device of band NTC temperature protections |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206669552U (en) |
-
2017
- 2017-04-05 CN CN201720345218.XU patent/CN206669552U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20180405 |