CN202228996U

CN202228996U - Spotlight with LED as light source thereof

Info

Publication number: CN202228996U
Application number: CN2011202721533U
Authority: CN
Inventors: 梁慧文
Original assignee: Nanjing Handson Science & Technology Corp
Current assignee: Nanjing Handson Science & Technology Corp
Priority date: 2011-07-29
Filing date: 2011-07-29
Publication date: 2012-05-23
Anticipated expiration: 2021-07-29

Abstract

The utility model provides a spotlight with LEDs at the light source thereof, which comprises a transparent cover, a light source assembly, a heat radiation block, an electrical box, a drive assembly and electrodes. The transparent cover is arranged on the heat radiation block. The drive assembly is arranged in the electrical box. The bottom of the heat radiation block adopts an inner concave structure. The inner concave bottom of the heat radiation block is provided with heat radiation holes. The light source assembly arranged in the transparent cover is fixed to the flat bottom of the inner concave bottom of the heat radiation block. The back side of the heat radiation block is provided with a plurality of heat radiation ribs. A chamber is enclosed by the plurality of heat radiation ribs. The electrical box is at least partially arranged in the chamber. Separation gaps are formed among the heat radiation ribs. The chamber can be communicated with the outside through the separation gaps so as to form a heat radiation channel. Separation gaps formed among the heat radiation ribs are in a non-enclosed connection with each other to be served as an effective heat radiation channel, while the conventional enclosed heat radiation structure is not adopted. A convection heat radiation channel inside the heat radiation block is formed by the heat radiation holes arranged on the heat radiation block together with the heat radiation ribs. Through the convection heat radiation channel, heat generated by an LED light source module is dissipated through air convection.

Description

With LED is the shot-light of light source

Technical field

It is the light fixture of light source with LED that the utility model relates to a kind of, relates in particular to a kind ofly be more conducive to dispel the heat and the LED shot-light of novel structure, belongs to the LED technical field of semiconductor illumination.

Background technology

Shot-light is the light fixture that is contained in roof, kitchen cabinet top, and it is widely used in the usefulness as accent light such as market, large supermarket, office space, hospital, school, hotel, high-end residential, but both brightening environment can beautify the environment again, be life increasing colour.

The shot-light that generally uses at present adopts metal halide lamp or fluorescent lamp as light source more.The general power consumption of this shot-light is higher, heating is big, lamp tube service life is short, and photochromic soft inadequately, and it is dazzling that the human eye direct-view can be felt, even produce dazzle.

LED (Light Emitting Diode); Claim light emitting diode again, they utilize the solid semiconductor chip as luminescent material, when two ends add appropriate voltage; Carrier in the semiconductor takes place compound, emits superfluous energy and causes that photo emissions produces visible light.The led light source luminous efficiency is high and monochromaticjty its light is good, spectrum is narrow, need not to filter and can directly send coloured visible light.Under the situation of the same less illuminating effect of power consumption, power consumption is 1/8th of incandescent lamp bulb, 1/2nd of fluorescent tube.Long service life can reach 100,000 hours.Security reliability is strong, and caloric value is low, and non-thermal radiation belongs to cold light source, can safe touch and can accurately control light type and lighting angle, and photochromic soft, the material that free from glare, not mercurous, sodium element etc. maybe health risks.

Existing LED shot-light has solved the some shortcomings of the shot-light existence of existing use conventional light source, but owing to adopt high-power LED as light source, the low-power LED that its caloric value is more general is big; And long-time the use, the temperature in the light fixture increases, and causes the inner resistance of LED lamp to become big conversely; In order effectively to reduce the temperature of led light source, need to reduce the thermal resistance of entire product, reduce inner thermal conduction resistance; Select the aluminium base of high thermal conductivity coefficient for use, utilize heat conductive pad to reduce thermal contact resistance, optimize the shell radiator; Increase available heat exchange area etc., at present, it is that LED is used as the important technological problems that the shot-light light source must be considered that effective heat dissipation channel is provided.

Summary of the invention

In order to improve the weak point of above-mentioned LED shot-light, the utility model provides a kind of unique LED shot-light aesthetic in appearance of structure that can solve existing LED light fixture heat dissipation problem well.

It is the shot-light of light source with LED that the purpose of the utility model is achieved in that a kind of, comprises diffuser, light source assembly, radiating block, electrical equipment box, driven unit and electrode, and diffuser is contained on the radiating block; Driven unit is placed in the electrical equipment box, and wherein, said radiating block has the bottom of concave inward structure; Said indent is provided with louvre on the bottom; Said light source assembly covers in the said diffuser and is fixed on indent bottom flat of said radiating block, and the back side of said radiating block is provided with a plurality of heat radiation ribs, and said a plurality of heat radiation ribs surround a chamber; Said electrical equipment box places in the said chamber at least in part; Be formed with between the said heat radiation rib at a distance from the crack, said chamber can be connected with the external world at a distance from the crack through said, forms heat dissipation channel.

Further, said louvre is arranged on indent bottom flat of said radiating block, and is arranged in the periphery of said diffuser.

Further, said heat radiation rib can be configured to radial, parallel strip, circular a kind of or its combination.

Further, said radiating block is processed through die cast.

Further, said driven unit comprises the drive circuit with temperature control circuit protection system that can automatically adjust to temperature.

Further, the pairing LED of a said light source assembly number can be single or many.

Further, said diffuser can be PMMA and processes, and also can use other antiwear heat resisting light transmissive materials, also can increase the photodiffusion material that is used to form light fixture anti-dazzle effect or frosted is done on its surface handled or be uniformly distributed with boss.

Further, said electrical equipment box is made of plastics, and comprises on the cap seal electrical equipment box together cover and electrical equipment box cover down, said electrical equipment box down cover near the bottom of said radiating block and and said radiating block bottom between have the gap of partiting thermal insulation.

Further, said diffuser is connected to the flat place of the indent bottom of said radiating block.

Through adopting above technical scheme, can realize following useful technique effect:

(1) through the back side a plurality of heat radiation ribs is set, increases area of dissipation, strengthen radiating effect, and be formed with the separated crack that non-sealing connects between the heat radiation rib, effective heat dissipation channel is provided, avoided traditional close formula radiator structure at radiating block.

(2) louvre on the radiating block constitutes the inner heat loss through convection passage of radiating block jointly with the heat radiation rib, and louvre can dissipate the heat that the led light source assembly produces near the led light source assembly through cross-ventilation.

(3) the electrical equipment box is covered down to fasten by cover and electrical equipment box on the electrical equipment box and forms, and between the bottom of cover and radiating block the slit is arranged under the electrical equipment box, plays the heat insulation effect of insulation further, realization heat, the electric separation, protects driven unit effectively.

(4) the utility model is rational in infrastructure simple, and good integrity is manufactured, the processing assembling is convenient.Need not dismantle when mounted in the lamp socket of just can directly packing into.

(5) aspect profile, solved existing LED shot-light open defect, make whole structure perfect more.

Description of drawings

Fig. 1 be the utility model be the structural section sketch map of the shot-light of light source with LED;

Fig. 2 be the utility model be the outward appearance perspective diagram of the shot-light of light source with LED;

Fig. 3 be the utility model be the assembly explosive view of the shot-light of light source with LED.

Among the figure: chamber, 61 thermovents that ribs, 33 louvres, 34 surround by the rib that dispels the heat dispel the heat cover, 7 electrodes, 10, heat dissipation channel, 31 radiating blocks bottom, 32 on cover, 5 driven units, the 6 electrical equipment boxes down for 1 diffuser, 2 light source assemblies, 3 radiating blocks, 4 electrical equipment boxes

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further detailed explanation.

To shown in Figure 3, for the utility model is the sketch map of the shot-light of light source with LED like Fig. 1.This shot-light comprises that diffuser 1, light source assembly 2, radiating block 3, electrical equipment box cover 6 down on cover 4, driven unit 5, the electrical equipment box, electrode 7; Light source assembly 2 is fixed on the appropriate location in the radiating block 3 through screw; Diffuser 1 is contained on the radiating block 3; Driven unit 5 places by in cover 6 on the electrical equipment box and the electrical equipment box electrical equipment box that down cover 4 cap seals form together, and cover 6 is connected through screw with radiating block 4 on the electrical equipment box, is installed in after totally installing on the pre-packed GX53 lamp socket.

Radiating block 3 is processed through die cast; Concave inward structure is adopted in the bottom 31 of radiating block 3; It flat of bottom that comprises the middle part reaches the peripheral edge portion by this flat outside arcuation rounding off, also is provided with louvre 33 on the radiating block 3, and louvre 33 preferably is arranged on the flat place of bottom 31; The back side of radiating block 3 is provided with radial heat radiation rib 32, and heat radiation rib 32 can be parallel strip, circular or other shape.A plurality of heat radiation ribs 32 surround a chamber 34, and these a plurality of heat radiation ribs 32 at it to the non-sealing of a side that should chamber 34, be formed with between the promptly adjacent heat radiation rib 32 and be convenient to this chamber 34 and extraneous separated the crack that is connected, formation heat dissipation channel.Can quickly the heat that led light source produced be distributed, guarantee the required operating ambient temperature of led light source operate as normal, thereby prolong the service life of LED light fixture.

Diffuser 1 is installed on the radiating block 3 through the mode of clamping, and diffuser 1 is provided with block tongue, and block tongue snaps fit onto in the bayonet socket at the flat place that is located at radiating block 3, and it is convenient to assemble, and is connected firmly; Light source assembly 2 covers in the diffuser 1 and fits tightly through screw and is fixed on radiating block 3 flat, thereby makes heat that light source assembly 2 produces dissipate heat through the flat entire heat dissipation piece 3 that conducts to rapidly of this radiating block 3; Louvre 33 on the radiating block 3 is arranged in the periphery of the installation site of diffuser 1; It can be configured to annulus arcuate socket, or radial flat strip-type hole etc.; Form the heat loss through convection path 10 between louvre 33 and the heat radiation rib 32; Because louvre 33 is near light source assembly 2, the heat of being convenient to light source assembly 2 is produced dispels the heat near the hot-air convections the light source assembly 2 fall through the mode of airflow convection.

The upper and lower cover 4,6 of electrical equipment box adopts working of plastics, and the electrical equipment box is placed in the chamber that is surrounded by heat radiation rib 32, makes that whole lamp body is long-pending small and exquisite; Cover 6 is provided with thermovent 61 on the electrical equipment box; The electrical equipment box does not contact in fact between the bottom 31 of cover 4 and radiating block 3 down, has the gap of a partiting thermal insulation, realizes heat, electricity separation effectively; Power drives assembly 5 in the protection electrical equipment box prolongs the service life of putting in order lamp.

The light source driving circuit of driven unit 5 adopts the temperature control circuit protection system; Temperature is automatically adjusted; Can control electric power outputting current to regulate the power consumption of LED according to the temperature of LED lamp, comprise LED constant voltage driving power module and parallelly connected with it temperature control system module.Size through the control output voltage realizes the temperature control to the LED lamp, and the variation of voltage has changed the luminous flux and the power consumption of LED lamp, avoids because of the overheated LED of causing light declines the service life of protection electric elements and prolongation light source simultaneously.

In this embodiment, to four LEDs light sources should be arranged, consist of the shot-light of GX53-4W on the power supply module 2, certainly, the pairing LED of a light source assembly number can be single or more.

Diffuser 1 also can use other antiwear heat resisting light transmissive materials for PMMA processes, and also can increase photodiffusion material or frosted is done on its surface handled or be uniformly distributed with boss, can form light fixture anti-dazzle effect.

The utility model is rational in infrastructure simple, and good integrity is manufactured, the processing assembling is convenient.Outside shot-light, also can be provided with prepackage tube (not shown), need not dismantle when mounted in the lamp socket of just can directly packing into.

Aspect profile, solved existing LED shot-light open defect, make whole structure perfect more.

Claims

1. one kind is the shot-light of light source with LED, comprises diffuser, light source assembly, radiating block, electrical equipment box, driven unit and electrode, and diffuser is contained on the radiating block; Driven unit is placed in the electrical equipment box; It is characterized in that: said radiating block has the bottom of concave inward structure, and said indent is provided with louvre on the bottom, and said light source assembly covers in the said diffuser and is fixed on indent bottom flat of said radiating block; The back side of said radiating block is provided with a plurality of heat radiation ribs; Said a plurality of heat radiation rib surrounds a chamber, and said electrical equipment box places in the said chamber at least in part, is formed with between the said heat radiation rib at a distance from the crack; Said chamber can be connected with the external world at a distance from the crack through said, forms heat dissipation channel.

2. according to claim 1 is the shot-light of light source with LED, it is characterized in that: said louvre is arranged on indent bottom flat of said radiating block, and is arranged in the periphery of said diffuser.

3. according to claim 1 is the shot-light of light source with LED, it is characterized in that: said heat radiation rib can be configured to radial, parallel strip, circular a kind of or its combination.

According in the claim 1 to 3 each described be the shot-light of light source with lED, it is characterized in that: said radiating block is processed through die cast.

5. according to claim 1 is the shot-light of light source with LED, it is characterized in that: said driven unit comprises the drive circuit with temperature control circuit protection system that can automatically adjust to temperature.

6. according to claim 1 is the shot-light of light source with LED, it is characterized in that: the pairing LED of a said light source assembly number can be single or many.

7. according to claim 1 is the shot-light of light source with LED, and it is characterized in that: said diffuser can be PMMA and processes, and also can increase the photodiffusion material that is used to form light fixture anti-dazzle effect or frosted is done on its surface handled or be uniformly distributed with boss.

8. according to claim 1 is the shot-light of light source with LED; It is characterized in that: said electrical equipment box is made of plastics; Comprise on the cap seal electrical equipment box together cover and electrical equipment box cover down, said electrical equipment box down cover near the bottom of said radiating block and and said radiating block bottom between have the gap of partiting thermal insulation.

9. according to claim 1 is the shot-light of light source with LED, it is characterized in that: said diffuser is connected to the flat place of the indent bottom of said radiating block.