WO2009140838A1

WO2009140838A1 - Led lamp structure

Info

Publication number: WO2009140838A1
Application number: PCT/CN2008/072918
Authority: WO
Inventors: 邱彦岚; 邱三井
Original assignee: 赖秀足
Priority date: 2008-05-21
Filing date: 2008-11-04
Publication date: 2009-11-26
Also published as: CN101586743A

Abstract

An LED (40) lamp structure comprises a casing (1), an illuminant unit (3) and a heat dissipating sheet (7). The casing (1) includes a reflecting lamp cup (10) and a connecting seat (20). The reflecting lamp cup (10) is a light reflection containing chamber (11) having a light outlet (111). The reflection wall (112) section of the light reflection containing chamber (11) has a parabola shape. The illuminant unit (3) comprises a circuit board (30). One side of the circuit board (30) is accompanied by a heat conductor (31). A high power LED (40) is connected with the circuit board (30). An optical lens (50) is combined with the LED (40). The heat conductor (31) is facing to the light outlet (111) of the reflecting lamp cup (10). The high power LED (40) and the optical lens (50) are opposite to the heat conductor (31) and face to the connecting seat (20).

Description

—LED LED lamp structure Technical field

The invention relates to a lamp structure, in particular to a projection type LED lamp structure using an LED light-emitting diode as a light source.

Background technique

At present, the projection brightness of the light source is used to highlight the illuminated object, or the light is used to improve the sense of space inside and outside, or the light is used to provide illumination (such as the illumination of the vehicle), the warning function, etc., and the projection type lamp is used for the above purposes. The most commonly used light source.

In today's general projection light sources, most of them must consider the brightness and cost, and use halogen bulbs as the light source. Although the halogen bulbs have sufficient brightness, the relative wattage is also higher, which leads to a relatively higher power consumption. The phenomenon of overheating occurs. In the current society of pursuing environmental protection and power saving, using a halogen bulb as a light source is a source of energy waste. Therefore, in recent years, LEDs (Light Emitting Diodes) have been used as light sources instead of halogen bulbs for problems such as overheating and high power consumption. For example, Taiwan Utility Model No. M314300 (Application No. 95222835) discloses an LED projection lamp, which includes a tube holder body, an illumination tube group, a heat dissipation fin and a lamp cover group; wherein, the illumination tube group consists of a plurality of LEDs The light-emitting tube and the light-emitting tube drive circuit board are composed, the tube seat body is for placing the driving circuit board, the heat-dissipating fin is disposed at the top end of the tube seat body, and the lamp cover group is for covering the LED, the above structure constitutes an LED projection lamp, the above The structure of the luminaire uses a plurality of LED illuminating tubes as the illuminating source, although it can provide higher brightness, but the more the quantity is used, the higher the manufacturing cost of the manufacturer, and the use of an optical lens for each LED ( Or optical lens (lens) is used to achieve the effect of concentrating or astigmatizing the LED, which further increases the manufacturing cost, and the luminaire of the above structure is complicated, and the assembly is time consuming and laborious.

Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide an LED lamp structure which can achieve a significant reduction in the number of LEDs, effectively reduce costs, and at the same time achieve an excellent projection effect and a simple structure and a reduction in overall component cost.

To achieve the above object, the present invention provides a light emitting diode LED lamp structure, comprising: a lamp housing, an illuminator unit, and a heat sink sheet;

The lamp housing includes a reflector lamp cup and a connecting seat, the reflector lamp cup is a light reflecting chamber having a light exiting port, and a reflective wall surface of the light reflecting chamber is parabolic, the reflecting lamp cup The bottom surface of the light exit opening is connected to the connecting base, and the connecting seat is provided with two through holes; the illuminant unit comprises a circuit board, and one side of the circuit board is provided with a heat conductor, and a high power light emitting diode Connected to the circuit board, an optical lens combined with the light emitting diode, and two electrode legs connected to the circuit board and connected to the LED poles;

The illuminant unit is located in the reflection chamber of the reflector cup, the heat conductor on the circuit board faces the light exit port of the reflector cup, and the heat dissipation plate is attached to the heat conductor, the high power LED and The optical lens combined therewith is opposite to the heat conductor toward the connecting seat, and the two electrode legs respectively pass through the two through holes provided in the connecting seat.

The advantages of the invention are:

Using a high-power LED to be placed in the reflector cup in the inward direction, and the light released by the high-power LED can be refracted to the parabolic reflective wall and then refracted outward through the optical lens, thereby achieving projection The purpose of the light source is such that the number of LED light-emitting diodes can be greatly reduced, the cost reduction effect can be achieved, and at the same time, the projection effect is excellent, and the overall structure is simple and the assembly is easy.

The invention will now be described in detail in conjunction with the drawings and embodiments.

DRAWINGS

Figure 1 is an exploded perspective view of the present invention;

Figure 2 is a perspective exploded view of another perspective of the present invention;

Figure 3 is a perspective assembled view of the present invention;

Figure 4 is a perspective sectional view of the present invention;

Fig. 5 is a schematic view showing the state of light refracting in the present invention.

detailed description

Embodiment,

The embodiment is a light-emitting diode LED lamp structure. Referring to FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4 and FIG. 5 , the lamp structure comprises: a lamp housing 1 , an illuminant unit 3 and a heat dissipation plate 7 . ;

The housing includes a reflector lamp cup 10 and a connector 20, the reflector lamp cup is a light reflection chamber 11 having a light exit port 111, and the reflector lamp cup has a through hole corresponding to the bottom of the light exit port. 12, the through hole has a rectangular shape. Of course, the rectangular through hole may be provided with a space (not shown). As shown in FIG. 4, the reflective wall surface 112 of the light reflecting chamber has a parabolic cross section, and the reflector cup is out. The bottom surface of the opposite side of the optical port is connected to the connecting base, and the connecting seat is provided with two through holes 21, and the connecting seat connected to the reflector lamp cup closes the rectangular through hole at the bottom of the reflector lamp cup, and the connection Two through holes of the seat are between the rectangular through holes of the reflector lamp cup;

The illuminator unit includes a circuit board 30 having a thermal conductor 31 attached to one side of the circuit board, a high power LED 40 connected to the circuit board, an optical lens 50 combined with the LED, and two connections An electrode leg 60 electrically connected to the circuit board and connected to the LED pin;

Wherein, the heat conductor is a metal material having a high heat conduction effect, such as an aluminum substrate or a copper substrate; the optical lens has a light entrance plane 51, and a portion that gradually bends and contracts from an edge of the light entrance plane. a light exiting surface 52, a second light exiting surface 53 extending obliquely outward from the end of the first light exiting surface, and an exiting light plane connected to the obliquely extending end of the second light emitting surface 54. The light incident plane is abutted on the high power light emitting diode; the electrode leg is a conductive metal rod.

The heat dissipating plate is made of a sheet-like aluminum-based material, and may also be a copper-based material, but the aluminum-based material is more material-saving.

The illuminant unit is fixed in the reflection chamber of the reflective cup through two through-holes of the electrode holder, and the ends of the two electrode legs are pierced out of the two through holes, the circuit The heat conductor on the board faces the light exit port of the reflector, and the heat sink sheet is attached to the heat conductor on the circuit board. The purpose of the heat source is to transfer the heat source generated by the high power light emitting diode to the heat conductor on the circuit board. The heat sink dissipates heat, thereby achieving the effect of improving heat dissipation efficiency; the high power light emitting diode and the optical lens combined therewith are opposite to the heat conductor and facing the connecting seat, and the two electrode legs respectively pass through The through hole provided in the connector is for electrically connecting to an external power supply device such as an electrical outlet.

FIG. 5 is a view showing the state of light refracting in the structure of the LED lamp of the embodiment. When the high-power diode is turned on to discharge the light, the light is refracted to the parabolic reflecting wall 112 via the optical lens 50 to refract the reflecting lamp cup. The light exiting port 111 is used to achieve the effect of collecting light. In this embodiment, the light enters the interior of the optical lens, such as the light plane 51, and then about 80% of the light is reflected by the first light exiting surface 52, about 20%. The light is refracted by the second illuminating surface 53 and the light exiting plane 54, and 80% of the refracted light is directed toward the parabolic reflecting wall, and is further refracted outside the light exiting port of the reflecting lamp cup through the reflecting wall surface, 20% Most of the light can be directed to the reflective wall and folded again. The light is emitted outside the light exiting port, and the refracted light can achieve the purpose of collecting light through the reflective wall surface which is parabolic.

In summary, the present invention uses a high-power light-emitting diode to be placed in a reflector cup in an inward direction, and refracts light emitted by the high-power LED through an optical lens to a parabolic reflective wall. The object is outwardly refracted, thereby achieving the purpose of projecting the light source. Thus, the number of LED light-emitting diodes can be greatly reduced, the cost of the illumination lamp can be reduced, and a good projection effect can be achieved at the same time, and the invention has the advantages of simple structure, time-saving and assembly. .

The above-described embodiments are not intended to limit the scope of the invention, and structural changes made by the description of the invention and the contents of the drawings are included in the scope of the invention.

Claims

Rights request

A light-emitting diode LED lamp structure, characterized in that: the lamp structure comprises: a lamp housing, an illuminant unit and a heat dissipation plate;

The lamp housing includes a reflector lamp cup and a connecting seat, the reflector lamp cup is a light reflecting chamber having a light exiting port, and a reflective wall surface of the light reflecting chamber is parabolic, and the reflecting lamp cup is a bottom surface of the light exit opening opposite to the connecting seat is connected to the connecting seat, and the connecting seat is provided with two through holes;

The illuminator unit includes a circuit board having a heat conductor attached to one side of the circuit board, a high power light emitting diode connected to the circuit board, an optical lens combined with the light emitting diode, and two connected to the circuit board And an electrode leg connected to the LED pole of the LED;

2 . The LED light fixture structure as claimed in claim 1 , wherein the optical lens is a first light having a light incident plane and a curved extension from the edge of the light incident plane. a second light-emitting surface that gradually extends outwardly from the end extending inwardly from the first light-emitting plane, and a light-emitting surface connected to the obliquely extending end of the second light-emitting surface, the The light plane bears against the high power light emitting diode.

3. The LED light emitting lamp structure according to claim 1, wherein the electrode leg is a conductive metal rod.

The light-emitting diode LED lamp structure according to claim 1 , wherein the illuminant unit is fixed to the reflective cup through two through-holes respectively provided through the connecting seat Reflecting room.

The LED light-emitting diode structure according to claim 1, wherein the heat dissipation plate is a sheet-shaped aluminum-based material.

The light-emitting diode LED lamp structure according to claim 1 , wherein a bottom of the reflector lamp cup corresponding to the light exit opening is provided with a through hole, and the connecting seat connected to the reflector lamp cup is closed. The through hole at the bottom of the reflector lamp cup, and the two through holes of the connecting seat are between the reflector cup through holes.