CN2692482Y

CN2692482Y - LED projective lamp

Info

Publication number: CN2692482Y
Application number: CNU2004200418654U
Authority: CN
Inventors: 夏俊峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-30
Filing date: 2004-04-30
Publication date: 2005-04-13
Anticipated expiration: 2014-04-30

Abstract

The utility model relates to an illumination projective lamp, in particular to an LED projective lamp. At present, the metal halide quartz projective lamp in the market has the disadvantages of low luminous efficiency, large power consumption, larger heating value and short service life, and has the unsafe factor. The utility model provides an LED projective lamp adopting an LED chip directly welded on a circuit board, and the utility model uses a reflection cup with a plurality of small reflecting surfaces to condense light. The utility model has the characteristics of favorable condensation of the light and favorable distribution of light spots. The metallic shell is used to be directly abutted with the back face of the circuit board, which can radiate heat well. The utility model has the advantages of long service life and less power consumption, and the utility model is appropriate for the mass production. The utility model is applied to be made into a projective lamp, a flashlight, a head lamp, etc.

Description

The LED shot-light

One, technical field: the utility model relates to a kind of illuminating lamp, particularly is a kind of LED shot-light.

Two, background technology: ornamental shot-light in the market mainly is the metal halide quartz lamp, and this shot-light is luminous again after the filament heating, and luminous efficiency is low, and power consumption is big, and caloric value is very big, has unsafe factor, and its life-span is very short.

Light emitting diode has luminous efficiency height, advantage that caloric value is little, color such as red, green, blue, white, the Huang of existing high brightness at present, and, can present full color by red, green, blue combination.Little power consumption, the life-span is long.The life-span of light emitting diode can reach 100,000 hours considerably beyond the life-span of quartz spot lamp.Also occurred now the shot-light that adopts LED to make on the market, it is to adopt the light emitting diode of finished product to be welded on the printed circuit board to make.Because each light emitting diode has the optically focused effect, the light of all light emitting diodes can not be gathered in the same scope, thereby the hot spot that forms in the place ahead of lamp is uneven, there are several luminous tubes just can see several specks, the brightness that can not reach all luminous tubes superposes in the central area, on irradiated object, just high illumination and brightness can not be obtained, better decorative lighting effect can not be played.Simultaneously can not reach the colour mixture effect that different colours forms.Reach hot spot and bigger beam angle uniformly, will reach enough brightness simultaneously, just need to adopt a large amount of luminous tubes, power consumption is big, and volume is big, the cost height.The disclosed patent of patent publication No. CN2515518 adopts the finished product of LED of existing encapsulation to be assembled exactly, and the light of all luminous tubes can not flock together.The disclosed patent of patent publication No. CN01246634 is to adopt the finished product of LED of existing Piranha encapsulation to be assembled, and utilizes lens to come optically focused.But this structure optically focused is limited in one's ability.And should not dispel the heat on the structure.The disclosed patent of patent publication No. CN1310790, its reflecting drum is the curved surface of single curvature vertically, provides collimated light beam, and light beam is too concentrated, and this is not suitable for the application of big beam angle.The existing LED shot-light that utilizes lens light gathering, the first, all light-ray condensings that can not effectively LED be sent, the second, for the situation of using a plurality of LED, can't be with single, simple lens with all light-ray condensings to the central area, light loss is very big.

Three, technology contents:

The purpose of this utility model just is to provide a kind of new LED shot-light, overcome the problem that exists in the above-mentioned technology, realization has good optically focused effect, have that good hot spot distributes and by the beam angle of design, can dispel the heat well, the life-span is long, cost is low, the LED shot-light of little power consumption.

The purpose of this utility model is achieved in that the LED shot-light is made up of LED luminous plaque 1 and housing, and housing is made up of reflector 2, shell 3, bonnet 4 and face shield 6, and the both positive and negative polarity on the LED luminous plaque 1 is drawn lead 10 and connected extraction electrodes 5.LED luminous plaque 1 is to be made by led chip 8 or paster type light emitting type 8 and circuit board 9, and led chip 8 or paster type light emitting type 8 directly are welded on the circuit board 9.Circuit board 9 can be conventional printed circuit board, also can be with metal or ceramic substrate is special forms.There is the good transparent adhesive tape film of light transmission to shield on the led chip 8.All LED both can adopt and be connected in series, and also can adopt to be connected in parallel, or adopt string and mix connection.LED luminous plaque 1 is directly installed on the bottom of reflector 2.The inner surface of reflector 2 totally is the horn mouth shape, and trumpet-shaped inner surface is made of a plurality of little reflectings surface 7, and these little reflectings surface can be convex surface, concave surface or plane.The inner surface of emission cup 7 can be to form with the little reflecting surface of single shape, as being convex surface entirely, and also can be by above-mentioned various facets in conjunction with constituting, as convex surface, concave surface and plane combination.These little reflectings surface are along the multistage arrangement of axial formation of Lamp cup, along evenly arranging on the circumference perpendicular to axial direction.Reflecting surface is coated with reflectorized material on 7 surfaces.Structure of the present utility model, owing to adopt chip of luminescent tube directly to be welded on the circuit board, one or more led chips concentrate in together, or concentrate in together with one or more paster LEDs, are convenient to utilize reflecting surface to carry out optically focused, can accomplish that volume is little.

Technical solution of the present utility model is: the LED shot-light, form by LED luminous plaque (1) and housing, it is characterized in that: LED luminous plaque (1) directly is close to the bottom that is installed in reflector (2), LED luminous plaque (1) is to be connected with circuit board (9) by led chip (8) or paster type light emitting type (8) to make, and the inner face of reflector (2) totally is the reflecting surface that is the horn mouth shape.

The inner surface of reflector (2) is made of a plurality of little reflectings surface (7), and these little reflectings surface (7) are along the multistage arrangement of axial formation of Lamp cup, along being evenly to arrange on the circumference perpendicular to axial direction.

Each reflection facet (7) of the inner face of reflector (2) can be a convex surface, also can be concave surface, can also be the plane, or above-mentioned several combination, and reflecting surface (7) is coated with reflectorized material on the surface.

LED luminous plaque (1) is to be connected to form by one or one group of led chip (8) and circuit board (9), led chip (8) directly is fixed on the circuit board (9), electrode on the led chip (8) is welded on the printed circuit board (9) by metal lead wire, constitute serial or parallel connection, or go here and there, also mix connection.

LED luminous plaque (1) is to be connected to form by one or one group of paster LED (8) and circuit board (9), and paster LED (8) directly is welded on the circuit board (9), constitutes serial or parallel connection, or string, and mixes and connect.

The glue film that shields is arranged on the surface of led chip (8).

Housing is connected with face shield (6) by reflector (2), shell (3), bonnet (4) and forms, and LED luminous plaque (1) is connected to extraction electrode (5) on the bonnet (4) by lead (10).

Reflector (2) separates with shell (3).

Reflector (2) and shell (3) are one.

Advantage of the present utility model and effect: 1, owing to be directly to adopt chip or paster LED welding, not to adopt the finished product LED that has support, the back side of circuit board does not have pad, therefore circuit board is convenient to directly directly combine closely with the shell that plays thermolysis, make light source that good heat radiation be arranged, improve the service life of light source.2, because reflector 2 has multistage little reflecting surface 7 vertically, therefore, the light greater than the different angles of critical angle can both be reflexed on the reflector 2, reflex to gathering and the stack that realizes light in the predetermined central area by reflector 2; Again because the circumferentially a plurality of little reflectings surface 7 of reflector 2 make light evenly to distribute around axis.3, owing to adopt led chip or adopting surface mounted LED, both help miniaturization, can obtain the luminous intensity of needs again, be more convenient for taking cooling measure, reduced production cost simultaneously.4, again owing to adopt the reflector that is made of a plurality of little reflectings surface, the light that effectively LED is sent is assembled, and reaches the effect of strengthening the central area illumination.5, structure of the present utility model is compared with the structure of various employing lens light gatherings, collected light more effectively, light loss minimum.6, simple in structure, be suitable for mass industrialized production.Applied range can be made shot-light, flashlight, head lamp, bulb etc., and industry-by-industry and field all can be used.

Four, description of drawings: Fig. 1 is the structural representation of the utility model first embodiment.Fig. 2 is the novel luminous plaque schematic diagram of this use.Fig. 3 is the structural representation of the utility model second embodiment.

Five, specific embodiment: the utility model will be further described below in conjunction with accompanying drawing.Fig. 1 is the structure of the utility model first embodiment, and it is made up of LED luminous plaque 1, reflector 2, shell 3, bonnet 4 and face shield (6), and the lead 10 of drawing of LED luminous plaque 1 connects extraction electrode 5.Extraction electrode 5 on the bonnet 4 is used to connect power supply, uses powered by direct current.Reflector 2 inner surfaces totally are the horn mouth shape, and inner surface is made of a plurality of little reflectings surface 7 that are little protruding spherical shape, and little reflecting surface 7 has multistage vertically and evenly distributes along circumference, and reflector 2 inner surfaces are coated with reflectorized material.LED luminous plaque 1 has one or more led chips 8 directly to be fixedly welded on the printed circuit board, and all LED adopt and are connected in series, and has the transparent colloid material to cover on led chip 8 surfaces and shields.By the light that LED luminous plaque 1 sends, to a sphere of reflector 2, light is reflected to the place ahead in the scope of axle center certain distance in certain angular range internal radiation.The critical angle that has a relative axis, the light that LED luminous plaque 1 sends directly penetrate forward during less than this critical angle; Light then is mapped on the reflector 2 greater than this critical angle, and the little reflecting surface 7 of each on the face that is reflected reflexes to the place ahead in the scope of center certain distance, also is that light is gathered gathering and the stack that has realized light in certain scope.

Because reflector 2 has multistage little reflecting surface 7 vertically, therefore, the light greater than the different angles of critical angle can both be reflexed in the predetermined central area; Again because the circumferentially a plurality of little reflectings surface 7 of reflector 2 make light evenly to distribute around axis.

Shell adopts metal to make.Shell 3 is close at the back side of LED luminous plaque 1, reaches the purpose of heat radiation.

The electrode of LED luminous plaque 1 is connected on the extraction electrode 5 of bonnet 4 by lead 10.Bonnet 4, shell 3 and reflector 2 usefulness screws tighten.The front end of reflector 2 has the good face shield of printing opacity 6 to play blocks air and protection luminous plaque 1 and reflecting surface 7.

Fig. 2 is the structure of the utility model second embodiment, and it is made up of LED luminous plaque 1, reflector 2, bonnet 4 and face shield (6), and the lead 10 of drawing of LED luminous plaque 1 connects extraction electrode 5.Extraction electrode 5 on the bonnet 4 is used to connect power supply, uses powered by direct current.The difference of it and first embodiment is that reflector 2 and shell 3 are incorporate.For good heat radiation, the part of reflector 2 and the metal one of shell 3 usefulness.There is insulated ring to separate between extraction electrode 5 and the bonnet 4.

The light source of luminous plaque of the present utility model can be a led chip, also can be adopting surface mounted LED, is good with direct employing led chip.Owing to adopt led chip or adopting surface mounted LED, both helped miniaturization, can obtain the luminous intensity of needs again, be more convenient for taking cooling measure, reduced production cost simultaneously; Owing to adopt the reflector that is made of a plurality of little reflectings surface, the light that effectively LED is sent is assembled again, reaches the effect of strengthening the central area illumination.

Structure of the present utility model is compared with the structure of various employing lens light gatherings, can be more effectively Collected light, the light loss minimum. Simple in structure, be suitable for batch production. It is novel to use this use Can make shot-light, flashlight, head lamp, bulb etc.

Claims

1.LED shot-light, form by LED luminous plaque (1) and housing, it is characterized in that: LED luminous plaque (1) directly is close to the bottom that is installed in reflector (2), LED luminous plaque (1) is to be connected with circuit board (9) by led chip (8) or paster type light emitting type (8) to make, and the inner face of reflector (2) totally is the reflecting surface that is the horn mouth shape.

2. LED shot-light according to claim 1 is characterized in that: the inner surface of reflector (2) is made of a plurality of little reflectings surface (7), and these little reflectings surface (7) are along the multistage arrangement of axial formation of Lamp cup, along being evenly to arrange on the circumference perpendicular to axial direction.

3. LED shot-light according to claim 1, it is characterized in that: each reflection facet (7) of the inner face of reflector (2) can be a convex surface, also can be concave surface, can also be the plane, or above-mentioned several combination, reflecting surface (7) is coated with reflectorized material on the surface.

4. LED shot-light according to claim 1, it is characterized in that: LED luminous plaque (1) is to be connected to form by one or one group of led chip (8) and circuit board (9), led chip (8) directly is fixed on the circuit board (9), electrode on the led chip (8) is welded on the printed circuit board (9) by metal lead wire, constitute serial or parallel connection, or go here and there, also mix connection.

5. LED shot-light according to claim 1, it is characterized in that: LED luminous plaque (1) is to be connected to form by one or one group of paster LED (8) and circuit board (9), paster LED (8) directly is welded on the circuit board (9), constitutes serial or parallel connection, or goes here and there, also mixes connection.

6. according to claim 1 or 2 or 3 or 4 described LED shot-lights, it is characterized in that: the glue film that shields is arranged on the surface of led chip (8).

7. LED shot-light according to claim 1 is characterized in that: housing is connected with face shield (6) by reflector (2), shell (3), bonnet (4) and forms, and LED luminous plaque (1) is connected to extraction electrode (5) on the bonnet (4) by lead (10).

8. LED shot-light according to claim 1 is characterized in that: reflector (2) separates with shell (3).

9. LED shot-light according to claim 1 is characterized in that: reflector (2) and shell (3) are one.