CN203478014U

CN203478014U - LED spotlight with cooler

Info

Publication number: CN203478014U
Application number: CN201320539540.8U
Authority: CN
Inventors: 张红英
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-08-30
Filing date: 2013-08-30
Publication date: 2014-03-12
Anticipated expiration: 2023-08-30

Abstract

The utility model relates to an LED spotlight with a cooler. The LED spotlight comprises a front cover, a rear cover, a light-emitting unit, a cooling part, a fan, a temperature detector and a control unit. The cooling part comprises a cooling shell and fins. The fan is disposed inside the rear cover. The control unit controls on and off of the fan according to the temperature of the light-emitting unit. The LED spotlight has the advantages that cooling effect of the spotlight can be improved effectively, the service life of the LED spotlight is prolonged, and power consumption of the fan is saved.

Description

A kind of LED projecting lamp with heat abstractor

Technical field

The utility model relates to lighting field, especially a kind of LED projecting lamp with heat abstractor.

Background technology

Along with the maturation of LED technology, its application in daily life was also extensive all the more in the last few years.Many traditional light fixtures also start transform to adopt LED as luminescence unit, and wherein LED shot-light is exactly common a kind of.Due to the needs of illuminance, the power of existing LED is increasing, and high-power LED self can distribute amount of heat when work, if these heats can not be taken away in time, can damage the life-span of LED.Therefore, in LED shot-light, radiator structure is essential, but the LED shot-light of existing structure only dispels the heat by radiation shell is set mostly, can only take the heat of the LED drive circuit in housing and LED luminescence unit out of heat radiation by the conduction pattern of radiation shell, the radiating effect of this radiating mode is limited, the demand of LED luminescence unit heat radiation cannot be met completely, the lifetime of LED luminescence unit can be caused in the course of time.For the radiator structure of this radiating effect deficiency, a kind of radiator structure of passive type is provided in prior art, its cardinal principle is in LED lamp body, add fan and have ventilating opening in housing sidewall, has strengthened the circulation of air, has accelerated heat radiation.

Through retrieval, publication number is the radiator structure that 102607000 utility model patent " radiator structure of projecting lamp " has improved traditional LED lamp, as shown in Figure 1, comprise protecgulum 11, bonnet 12, fin 13, LED chip 14 and reflection shield 15, fin 13 is located between protecgulum 11 and bonnet 12, between by described fin 13 and bonnet 12, be provided with a fan 16, the use direction of take is benchmark, described bonnet 12 tail ends are provided with an air inlet 121 over against fan 16 places, and the housing side of described fin 13 and bonnet 12 junctions is provided with air outlet.This radiator structure can effectively improve the radiating effect of projecting lamp, extends the life-span of light fixture.But owing to having added fan, and the power consumption of great power LED is very large, opening for a long time fan can further increase power consumption, causes unnecessary waste.Therefore, the radiator structure of prior art need to improve.

Utility model content

The purpose of this utility model is to overcome shortcoming of the prior art with not enough, and a kind of LED projecting lamp with heat abstractor is provided, and this heat abstractor has advantages of that rapid heat dissipation, power consumption are low.

The utility model is that the technical scheme that its technical problem of solution adopts is: a kind of projecting lamp with heat abstractor, comprises protecgulum, bonnet, luminescence unit, radiating part and fan; Described radiating part is arranged between protecgulum and bonnet and is connected with protecgulum, bonnet; Described luminescence unit is arranged on protecgulum inside; Described fan is arranged on bonnet inside over against luminescence unit; Described luminescence unit comprises LED chip and driving chip, and described radiating part comprises radiation shell, and the sidewall of this radiation shell is provided with several air outlets; Described bonnet is provided with air inlet over against fan directional; Described projecting lamp also comprises Temperature Detector and control module; Described Temperature Detector is arranged on the inner and close luminescence unit of protecgulum; Described control module is electrically connected to Temperature Detector and driving chip respectively, and control module receives the signal of Temperature Detector, and controls the switch of fan.With respect to prior art, the utility model dispels the heat to LED projecting lamp in the mode of passive heat radiation (fan), and Temperature Detector and control module under this prerequisite, have been increased, to detect the heating situation of LED lamp and to change on demand at any time rotation speed of the fan, at assurance LED lamp, can in the operating temperature range in safety, work, and reduced the kwh loss of fan, make LED heat radiation reach best benefit.

As further improvement of the utility model, the cylinder that described radiation shell is hollow, described air outlet arranges around radiation shell for one week, has strengthened the circulation of air in radiating part, is easy to heat radiation.

As further improvement of the utility model, this projecting lamp also comprises a protected location, and described protected location comprises shielding case and stepper motor; Described shielding case is arranged on radiation shell inwall, and this shielding case is the hollow circular cylinder that external diameter is slightly less than the internal diameter of radiation shell, and it is corresponding with the air outlet of radiation shell on sidewall, to have several openings; Described stepper motor is located at shielding case inside, and by thin bar, is connected between stepper motor and shielding case; Described stepper motor is electrically connected to described control module, the rotation of control module control step motor.This improvement is by stepper motor, to control the rotation of shielding case, thereby controls the switch of the air outlet of radiating part, when not needing to use LED shot-light, can control stepper motor and close air outlet, reaches dustproof object.

As further improvement of the utility model, on described radiation shell outer wall, be installed with fin, between each air outlet, be provided with one or more fins.This improvement has increased the contact area of radiation shell and air, has accelerated the propagation of heat to air, has promoted the efficiency of heat radiation.

As further improvement of the utility model, described radiating part is provided with the conducting strip of a ring-type in the one end being connected with protecgulum, and this conducting strip is close to the substrate of LED chip when protecgulum is connected with radiating part.LED chip can initiatively dispel the heat by radiating part, belongs to active heat removal mode, and this improvement has further improved the radiating efficiency of LED chip.

As further improvement of the utility model, described control module is controlled the drive current that drives chip.When the excess Temperature of the chip of LED, control module can reduce the drive current of drive circuit, and LED chip temporarily reduces brightness, and the temperature of LED chip and drive circuit is lowered rapidly.Control by control module to drive circuit, has improved the security of working greatly, has extended the life-span of LED chip.

The beneficial effects of the utility model are: this shot-light is provided with a fan in lamp housing bonnet, and the corresponding position of fan of bonnet tail end is provided with an air inlet, has strengthened the effect of ventilating.Temperature Detector can detect the temperature of LED chip and feed back to control module, and control module is controlled LED drive circuit and fan, has improved the controllability of heat radiation, and security, has extended the life-span of LED chip, and has saved electric weight.

In order to understand more clearly the utility model, below with reference to accompanying drawing, say and set forth the specific embodiment of the present utility model.

Accompanying drawing explanation

Fig. 1 is the STRUCTURE DECOMPOSITION figure of the projecting lamp with radiator structure of prior art.

Fig. 2 is the utility model LED projector lamp structure schematic diagram.

Fig. 3 is the STRUCTURE DECOMPOSITION figure of LED projecting lamp shown in Fig. 2.

Fig. 4 is the structural representation of the radiating part of LED projecting lamp shown in Fig. 3.

Fig. 5 is the structural representation of the protected location of LED projecting lamp shown in Fig. 3.

Referring to drawings and the specific embodiments, the utility model is described further.

The specific embodiment

Refer to Fig. 2 and Fig. 3, wherein, Fig. 2 is the utility model LED projector lamp structure schematic diagram, and Fig. 3 is the STRUCTURE DECOMPOSITION figure of the LED projecting lamp shown in Fig. 2.Projecting lamp with heat abstractor described in the utility model comprises: comprise protecgulum 1, bonnet 2, luminescence unit 3, radiating part 4, fan 5, control module (not shown), Temperature Detector 6, protected location 7.Described radiating part 4 is located between protecgulum 1 and bonnet 2, and protecgulum 1, radiating part 4 and bonnet 2 can link into an integrated entity.Described luminescence unit 3 is located at protecgulum 1 inside.Described fan 5 is located at bonnet 2 inside over against the direction of luminescence unit 3.Described Temperature Detector 6 is located at the inner and close luminescence unit 3 of protecgulum 1.Described protected location 7 is located at radiating part 4 inside.Described bonnet 2 is provided with air inlet 21 in the direction over against fan 5.Described luminescence unit 3 comprises that LED chip 31 and LED drive chip (not shown).

Refer to Fig. 4, it is the structural representation of the radiating part 4 of the LED projecting lamp shown in Fig. 3.The cylinder that described radiating part 4 is hollow, comprises radiation shell 41, conducting strip 42 and fin 43.The outer wall of described radiation shell 41 is provided with several air outlets 411, and described air outlet 411 forms a split ring for one week around outer wall.Described radiation shell 41 two ends are respectively equipped with screw thread 412, and described screw thread 412 matches with protecgulum 1, bonnet 2 respectively, and three links into an integrated entity by spiral.Described conducting strip 42 is located at the one end being connected with protecgulum 1 on radiating part 4, and this conducting strip 42 is close to the substrate of LED chip 31 when protecgulum 1 is connected with radiating part 4.Described fin 43 is vertically located on radiation shell 41 outer walls, is provided with one or more fins 43 between adjacent air outlet 411.

Refer to Fig. 5, it is the structural representation of the protected location of the projecting lamp of LED shown in Fig. 3.This protected location 7 comprises shielding case 71 and motor 72.Described shielding case 71 is arranged on radiation shell 41 inwalls, and this shielding case 71 is slightly less than the hollow circular cylinder of radiation shell 41 internal diameters for external diameter, and on sidewall, has several openings 711; Described opening 711 is corresponding with the air outlet 411 on radiation shell 41, and its quantity, size, shape and position are in full accord; Described shielding case 71 can move by axial rotation.Described stepper motor 72 is connected with shielding case 71 by thin bar, with stepper motor 72, drives shielding case 71 to rotate, and when shielding case 71 turns to certain angle, shielding case 71 can shield the air outlet of radiation shell 41 411 completely.

The operation principle of the LED projecting lamp with heat abstractor described in the utility model is as follows:

First, connect the power supply of LED lamp, LED chip 31 work.Control module control step motor 72 rotates, and stepper motor 72 drives shielding case 71 to rotate, until the air outlet 411 of the opening of shielding case 71 and radiation shell 41 is involutory, meanwhile, Temperature Detector 6 starts detection signal to feed back to control module.Then, the temperature of control module judgement LED chip 31, if the operating temperature of LED chip 31 is greater than 60 ℃, starts fan 5, otherwise keeps fan 5 to close.Again and, the temperature of control module judgement LED chip 31, if the temperature of LED chip 31 is greater than 100 ℃, controls and drives chip to reduce drive current, and the temperature of LED chip 31 is temporarily lowered.When the power supply disconnection of LED chip 31, control module control step motor 72 rotates shielding case 71 is closed the air outlet of radiation shell 41 411.

Than prior art, the projecting lamp of LED of the present utility model is provided with a fan 5 in lamp housing bonnet 2, and the corresponding fan of bonnet 2 tail ends 5 positions are provided with an air inlet 21, have strengthened the effect of ventilating.Temperature Detector 6 can detect the temperature of LED chip 31 and feed back to control module, and control module is controlled LED and driven chip and fan, has improved the controllability of heat radiation, and security, has extended the life-span of LED chip 31, and saved electric weight.This projecting lamp with heat abstractor, the circulation of air in housing is fast, and radiating efficiency is high, and power consumption is little, and security is good, and is easy to installation and removal, is suitable for large-scale indoor lighting.

The utility model is not limited to above-mentioned embodiment, if various changes of the present utility model or distortion are not departed to spirit and scope of the present utility model, within if these changes and distortion belong to claim of the present utility model and equivalent technologies scope, the utility model is also intended to comprise these changes and distortion.

Claims

1. with a LED projecting lamp for heat abstractor, comprise protecgulum, bonnet, luminescence unit, radiating part and fan; Described radiating part is arranged between protecgulum and bonnet and is connected with protecgulum, bonnet; Described luminescence unit is arranged on protecgulum inside; Described fan is arranged on bonnet inside over against luminescence unit; Described luminescence unit comprises LED chip and driving chip, and described radiating part comprises radiation shell, and the sidewall of this radiation shell is provided with several air outlets; Described bonnet is provided with air inlet over against fan directional, it is characterized in that:

Described projecting lamp also comprises Temperature Detector and control module; Described Temperature Detector is arranged on the inner and close luminescence unit of protecgulum; Described control module is electrically connected to Temperature Detector and driving chip respectively, and control module receives the signal of Temperature Detector, and controls the switch of fan.

2. the LED projecting lamp with heat abstractor according to claim 1, is characterized in that: the cylinder that described radiation shell is hollow, described air outlet arranges around radiation shell for one week.

3. the LED projecting lamp with heat abstractor according to claim 2, is characterized in that: this projecting lamp also comprises a protected location, and described protected location comprises shielding case and stepper motor; Described shielding case is arranged on radiation shell inwall, and this shielding case is the hollow circular cylinder that external diameter is slightly less than the internal diameter of radiation shell, and it is corresponding with the air outlet of radiation shell on sidewall, to have several openings; Described stepper motor is located at shielding case inside, and by thin bar, is connected between stepper motor and shielding case; Described stepper motor is electrically connected to described control module, the rotation of control module control step motor.

4. the LED projecting lamp with heat abstractor according to claim 1, is characterized in that: on described radiation shell outer wall, be installed with fin, be provided with one or more fins between each air outlet.

5. the LED projecting lamp with heat abstractor according to claim 1, is characterized in that: described radiating part two ends are respectively equipped with the screw thread matching with protecgulum and bonnet, and protecgulum, radiating part, bonnet three link into an integrated entity by spiral.

6. the LED projecting lamp with heat abstractor according to claim 1, is characterized in that: described radiating part is provided with the conducting strip of a ring-type in the one end being connected with protecgulum, and this conducting strip is close to the substrate of LED chip when protecgulum is connected with radiating part.

7. the LED projecting lamp with heat abstractor according to claim 1, is characterized in that: this control device is controlled the drive current of drive circuit.