KR20100121339A - Led lamp package-module - Google Patents

Abstract

PURPOSE: An LED package lighting module is provided to effectively emit the heat while blocking the dust and the moisture from the outside by arranging the heat-proof, dust-proof, and water-proof configuration. CONSTITUTION: A plurality of LED units(402) is mounted on an LED package module(401). The LED package module comprises a stator(405) projected on the front surface of the insertion direction. A platform comprises a fixing unit and an insert guide groove combined with the stator of the LED package module.

Description

LED package lighting module {LED lamp package-module}

The present invention relates to an LED package and a lighting module, to provide an efficient heat dissipation effect through an LED package module in which a plurality of LED units are mounted, and to provide a lighting module that simultaneously realizes a dustproof effect and a moisture proof effect, and also lights Due to the structural coupling characteristics of the module, it provides a module that can be easily replaced in the event of a lighting device failure.

The present invention particularly provides a lighting module suitable for a headlamp lighting device of a vehicle.

Recently, a great deal of attention has been focused on energy-efficient lighting around the world, and LEDs (Light Emitting Diodes) are attracting attention due to their high energy efficiency and relatively long lifespan.

The demand for these LEDs continues to increase as they have several advantages over filament-based light emitting devices: long life, low power, good initial drive characteristics, high vibration resistance, and high tolerances for repetitive power interruptions. LEDs are actively used as light sources for mobile communication terminals, display devices or other electronic devices.

LEDs are devices in which electrons and holes meet and emit light at a P-N semiconductor junction by applying current, and are typically manufactured in a package structure in which an LED chip is mounted. Such an LED package is generally mounted on a printed circuit board (PCB) and configured to emit light by receiving current from an electrode formed on the PCB.

By the way, in the LED package, the heat generated from the LED chip has a direct impact on the light emitting performance and lifetime of the LED package. This is because heat generated in an LED chip causes dislocations and mismatches in the crystal structure of the LED chip when the LED chip stays in the LED chip for a long time.

Therefore, the most problem in mounting an LED to a lighting device is a problem of heat dissipation, and it is true that the luminous efficiency is increased, but the heat generation amount of the LED chip is still considerable.

If no heat dissipation countermeasure is taken, the temperature of the LED chip becomes too high and the chip itself or the packaging resin deteriorates, which in turn leads to a decrease in luminous efficiency and a short life of the chip. In order not to lose the long life, which is the biggest feature of LED, it is necessary to develop technology to spread the heat of the chip to the outside.

The LED is thermally conductive to solve this problem when the junction temperature rise of the active layer and the forward voltage and light output decrease due to the thermal resistance from the structure and material characteristics of the package that emits heat generated from the LED during high temperature operation. On this good material, a package in which a plurality of LED units are mounted may be mounted on a wiring board or a plurality of chips may be packaged on a wiring board or a metal substrate.

However, if the heat generated by the operation for a long time is not released quickly, fatigue accumulates in the joint with high thermal resistance, resulting in poor reliability such as cracking and de-lamination of the joint interface due to structural creep. This is a problem that causes the failure of the entire system.

In addition, the LED packaging structure and material has a problem in that the reliability and poor light quantity and reliability due to the moisture caused by moisture absorption.

In a conventional conventional LED module, there is a problem that heat generated from each of the LED units is not easily spread to the space in the housing but is stagnant. In recent years, the size of the LED module is decreasing, and since the LED module having a small size also has a small space in the housing, heat dissipation performance due to convection is further deteriorated. Therefore, there is a need for a housing structure that emits heat more efficiently.

Recently, LED's input power and output brightness are getting high enough to be used in the headlights of the vehicle. The high-power LED is advantageous because the luminous efficiency is 1.1 to 1.2 times higher than that of the halogen lamp used in the headlamp of the vehicle, thereby lowering the power consumption.

In order to apply such LEDs to vehicle headlights in the form of modules, the following problems must be decided. First, since LEDs generate more heat than light bulbs such as halogen lamps, a structure for effectively emitting them to the outside is required, and a problem arises in that the LEDs must be protected from external moisture.

Accordingly, the present invention has been made to solve the above-described problems of the prior art, the object of the present invention is to have a dust-proof and moisture-proof configuration as well as a heat dissipation configuration, it is possible to effectively release heat while blocking dust and moisture outside It is to provide LED package lighting module.

Another object of the present invention is to provide a lighting module that can be easily replaced in the failure of the lighting device due to the structural coupling characteristics of the lighting module.

In order to achieve the above object, the present invention provides a LED package module including a stator mounted with a plurality of LED units and protruding in the front portion of the insertion direction, and protruding the LED package module on the inner surface of the through hole as a through hole. An illumination module including a platform including an insertion guide groove for guiding the insertion of the stator and a coupling part formed at an end of the insertion guide groove and including a fixing part coupled to a stator of the LED package module, and a housing to which the platform is coupled. It is composed.

In the present invention, the LED package module may include a plurality of LED units and high heat dissipation PCB.

An LED can be defined as 'a solid state device with a pn junction, which emits light when excited by an electrical current', and an LED module is a unit that is supplied as a light source, arranged in a planar and three-dimensional manner. Therefore, it can be defined as being composed of a plurality of elements optically, mechanically, and electrically, which can be treated as one component.

LED is a device in which electrons and holes meet and emit light in a P-N semiconductor junction by application of current, and are generally manufactured in a package structure in which an LED chip is mounted. Such an LED package may be generally mounted on a printed circuit board (PCB) and configured to emit light by receiving a current from an electrode formed on the printed circuit board.

In addition, the LED package may be configured as a chip on board (COB). At this time, the LED units are mounted directly to the submount substrate by the LED (chip) chip (solder) or stud bumps (solder). Here, the LED units are mounted on a common mounting plate, each light unit is spaced at predetermined intervals on the mounting plate, and a fin heat sink is attached to the mounting plate to remove heat from the units. Can be mounted. At this time, a thermoelectric cooler or a heat pipe may be used as the heat sink.

In the present invention, the main body 401 of the LED package module includes a metal having excellent thermal conductivity, but the thermal conductivity of the metal is preferably 100 W / m · K or more.

In a conventional conventional LED module, there is a problem that the heat generated from each of the LED units is not easily spread to the space in the housing and stagnant. In recent years, the size of the LED module is decreasing, and since the LED module having a small size also has a small space in the housing, heat dissipation performance due to convection is further deteriorated. Therefore, it can be said that heat dissipation through the LED package module itself is critical.

Therefore, under the structure in which the front surface of the LED package module is sealed, a package of a high heat dissipation PCB or COB type in which a plurality of LED units are mounted is combined to transfer heat generated from the LED to the rear portion of the LED package module. It is preferable that thermal conductivity is 100 W / m * K or more.

In the present invention, instead of mounting the LED chip on the lead frame, it is possible to further install a heat dissipation slug having excellent thermal conductivity inside the body. The LED package is arranged so that the heat dissipation slug is in contact with the printed circuit board, the heat of the LED chip can be mainly transferred to the printed circuit board through the heat dissipation slug.

In the present invention, the LED package module may include a stator protruding from the front portion of the insertion direction.

The stator of the LED package module is guided and inserted along the insertion guide groove including the coupling part of the platform, and reaches the fixing part of the platform formed at the distal end of the insertion guide groove to rotate the LED package module to fix the platform. Can be done.

In the present invention, the platform, if the platform is part of the housing may have the same material properties as the housing. However, in the case of designing a material different from the housing, it is preferable to use a metal, an industrial plastic or a ceramic having a thermal conductivity of 80 W / m · K or more in order to improve the conductive heat characteristic.

In the present invention, the platform may include a coupling part having a form of a through hole penetrating both cross-sections of the platform.

The coupling portion of the platform may determine the number of through holes according to the number of unit light sources of the LED package module coupled to the platform.

In the present invention, the coupling portion of the platform may include an insertion guide groove for guiding insertion of the protruding stator of the LED package module to the side surface of the through hole.

The insertion guide groove may be engaged with the stator of the LED package module to guide the fixed part of the platform.

In the present invention, the insertion guide groove of the platform includes a lighting module, characterized in that the straight or spiral.

When the insertion guide groove is formed in a straight shape, after the insertion guide groove and the stator of the LED package module are engaged, the LED package module is guided straight into the coupling part of the platform to reach the fixed part of the platform.

If the insertion guide groove is formed in a spiral shape, in the same principle as fastening the screw to the bolt, after the insertion guide groove and the stator of the LED package module are engaged, the LED package module is spirally guided into the engaging portion of the platform to The fixing part is reached.

In the present invention, the coupling portion of the platform may include a fixing portion formed at the distal end of the insertion guide groove and coupled with the stator of the LED package module.

In the present invention, the stator of the LED package module may include a lighting module that is inserted into the coupling portion of the platform, and then rotated and fixedly coupled to the fixing portion of the platform.

After the stator of the LED package module is engaged with the insertion guide groove of the platform, when the LED package module is inserted into the coupling part of the platform and reaches the fixing part, the stator of the LED package module and the fixing part of the platform are fixed by rotating the LED package module. It may include a lighting module characterized in that.

In the present invention, the LED package module may include a lighting module, characterized in that it further comprises an elastic coupling ring in close contact with the coupling portion of the LED package module and the platform.

In the present invention, the elastic bonding ring is preferably formed of a copolymer made of styrene (Styrene) and butadiene (Butadiene). The copolymer of styrene and butadiene has abundant elasticity, which is excellent in abrasion resistance, rebound elasticity, and exothermic properties, less deterioration of physical properties even at high charge, and no thermal deformation at 150 ° C or higher. .

After coupling the elastic coupling ring to the LED package module, and inserting the LED package module into the coupling portion of the platform and fixedly coupled, the coupling portion of the LED package module and the platform by the elastic coupling ring can be further in close contact. Therefore, about 20% of the total thickness of the elastic coupling ring can be pressed and combined to play a role of preventing dust and moisture from penetrating the front and rear parts of the LED package module.

In the present invention, the housing may be formed by mixing polypropylene (Polypropylene) and TALC (Magnesium Silicate Hydroxide) in a predetermined ratio.

TALC serves to enhance hardness and strength by reinforcing ductile polypropylene properties, and the mixing ratio is preferably mixed with polypropylene at 100: 10 to 40. Thermal conductivity improves according to the ratio of TALC, which is about 0.33 W / m · K at 10% ratio, up to 0.51 W / m · K at 40% ratio, and impact strength and bending strength are 2 wt%. In this case, the characteristics are improved to 25 KJ / m² and 1800 N / mm² or more, respectively.

In the present invention, the housing cover lens may include one formed of a transparent plastic or glass.

In particular, when the present invention is used as a headlight lighting module of the vehicle, the dust cover and moisture proof effect of the front portion of the LED package module is further increased due to the housing cover lens.

The present invention, the step of inserting the LED package module to the coupling portion guided by the guide groove formed in the through-type coupling of the platform, after the LED package module is inserted, the protruding stator of the LED package module Rotating and fixing to the fixed portion of the platform, it may include a method of manufacturing a lighting module comprising the step of coupling the platform coupled with the LED package module to the housing.

The present invention, the LED package module may include a method for manufacturing a lighting module, characterized in that it further comprises an elastic coupling ring for close coupling between the LED package module and the platform.

The present invention may include a method for manufacturing a lighting module, characterized in that the insertion guide groove is formed in a straight or spiral shape to guide the insertion of the LED package module.

The present invention may include a method of manufacturing a lighting module, further comprising the step of coupling the housing cover lens to the front of the housing.

According to the present invention, unlike the prior art, in the lighting module using the LED package, the front part of the LED package module is sealed, the elasticity as well as the effect of effectively radiating heat to the rear part through the LED package module itself having good thermal conductivity Due to the coupling of the coupling ring, etc., there is an effect of simultaneously implementing the dust-proof and moisture-proof effect.

In addition, according to the present invention, due to the structural coupling characteristics of the lighting module provides a simple and easy replacement module in the failure of the lighting device.

In particular, the present invention is an LED lighting module for a vehicle headlight, the heat dissipation effect, dust-proof effect and waterproof effect is increased compared to the prior art, there is an advantage that the replacement of the lighting device is more easy.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 is a front perspective view of an LED package module coupled to a platform and fastened to a housing according to an embodiment of the present invention.

Referring to this front perspective view, the LED package module is coupled to the platform so that the front and rear parts of the LED package module is sealed off. Therefore, heat generated in the LED is transferred to the LED package module to release the heat to the rear portion.

2 is a rear perspective view of the LED package module coupled to the platform and fastened to the housing according to an embodiment of the present invention.

Referring to such a rear perspective view, the LED package module is coupled to the platform and fixed, and as the elastic coupling ring is coupled, the front and rear portions of the LED package module are further sealed and blocked. In addition, the coupling portion of the LED package module and the platform is in close contact by the elastic coupling ring to further increase the waterproof effect and dustproof effect.

3 is a front perspective view of an elastic coupling ring coupled to the LED package module according to an embodiment of the present invention.

The number of units of the LED package module is not limited, and the number of through holes of the coupling part of the platform may be determined according to the number. The elastic coupling ring may take a method of engaging by inserting the LED unit toward the rear portion from the front portion of the LED package module mounted.

Figure 4 is a front perspective view of the elastic coupling ring is coupled to the unit of the LED package module according to an embodiment of the present invention.

First, a plurality of LED units 402 are mounted on the high heat dissipation PCB 403, and a high heat dissipation PCB 403 on which the LED unit 402 is mounted is mounted on the LED package module 401 to provide a unit of the LED package module. To form.

The module may form a stator 405 for fixing after being coupled to the platform, and may combine the elastic coupling ring 404 to increase the heat dissipation effect and the waterproofing or dustproofing effect.

Due to the coupling of the elastic coupling ring 404, the heat generated from the LED can be further increased to the rear portion through the LED package module, preventing dust or moisture from penetrating the front or rear portion of the LED package module. Done.

5 is a front perspective view of the platform according to an embodiment of the present invention and a partially enlarged view of the insertion opening of the platform.

The platform 501 may include through holes 502 at both end surfaces for coupling the LED package module, and a side portion of the through hole 502 may include an insertion guide groove 504 for inserting the LED package module. Can be.

In addition, the fixing part 506 may be formed to prevent the coupling between the LED package module and the platform 501.

Therefore, after the stator 405 of the LED package module is engaged with the insertion guide groove 504 according to the guide of the insertion guide guide groove 503, the LED package module is inserted into the coupling part of the platform, and eventually the platform By reaching the government by rotating the LED package module, the stator 405 of the LED package module and the fixing part 506 of the platform is fixedly coupled.

6 is a front perspective view of a form in which a platform is fastened to a housing according to an embodiment of the present invention.

According to the present invention, the platform is fastened to the housing according to the convenience of the person who wants to manufacture the lighting module or the environment of the production line, and then the LED package module can be coupled later, or the LED package module and the platform can be first coupled to the housing.

7 is a front perspective view of the LED package module coupled to the platform according to an embodiment of the present invention.

As described above, the present invention can provide a convenience of providing a lighting module by combining the LED package module and the platform and then fastening the housing according to the convenience of the person who wants to manufacture the lighting module or the environment of the production line.

8 is a side view of the LED package module and the platform according to an embodiment of the present invention.

The LED unit 804 is mounted on the high heat dissipation PCB 805, and the high heat dissipation PCB 805 on which the LED unit 804 is mounted is mounted on the module having the protruding stator 808 to mount the LED package module 806. Can be formed. An elastic coupling ring 807 may be coupled thereto to form an LED package module in which heat dissipation, waterproofing, and dustproofing functions are further increased.

The LED package module 806 is inserted into the front portion from the rear portion of the platform 801 to be coupled.

More specifically, the stator 808 of the LED package module 806 is engaged with the insertion guide groove 803 of the platform 801 to insert the LED package module 806 into the through hole 802 of the platform. do.

In the case where the insertion guide groove 803 is formed in a straight line by the insertion method, the LED package module 806 is inserted in a straight line to reach the fixing part 808, and when the insertion guide groove 803 is formed in a spiral shape. The LED package module 806 is spirally inserted and screwed in such a manner that the screw and the bolt are coupled to reach the fixing part 808.

When the LED package module 806 reaches the fixing part 808 under the guidance of the insertion guide groove 803, the LED package module 806 is rotated to engage and fix the stator 808 and the fixing part 808 of the platform. To be combined.

The present invention can combine the LED package module 806 and the platform 801 in such a simple manner, in particular, the replacement of the lighting module in a very simple manner when replacing the lighting module due to frequent failures, such as a vehicle lighting module. In addition, the advantages of ensuring heat dissipation, dustproof, and waterproof functions are provided.

The present invention has been described above in connection with specific embodiments of the present invention, but this is only an example and the present invention is not limited thereto. Those skilled in the art can change or modify the described embodiments without departing from the scope of the present invention, and within the equivalent scope of the technical spirit of the present invention and the claims to be described below. Various modifications and variations are possible.

1 is a front perspective view of an LED package module coupled to a platform and fastened to a housing according to an embodiment of the present invention.

Figure 2 is a rear perspective view of the LED package module is coupled to the platform is coupled to the housing according to an embodiment of the present invention.

Figure 3 is a front perspective view of the elastic coupling ring is coupled to the LED package module according to an embodiment of the present invention.

Figure 4 is a front perspective view of the elastic coupling ring is coupled to the unit of the LED package module according to an embodiment of the present invention.

5 is an enlarged partial perspective view of a platform according to an embodiment of the present invention and a coupling portion of the platform.

Figure 6 is a front perspective view of the form of the platform is fastened to the housing according to an embodiment of the present invention.

Figure 7 is a front perspective view of the LED package module coupled to the platform according to an embodiment of the present invention.

Figure 8 is a side view of the LED package module and platform according to an embodiment of the present invention.

{Explanation of Symbols for Main Parts of Drawings}

100,200: LED lighting module coupled to the housing is coupled to the platform module

300: LED package module with an elastic coupling ring

401, 806: LED Package Module

402, 804: LED unit

403, 805: PCB (Printed Circuit Board)

404, 807: elastic coupling ring

405: stator

501, 801: Platform

502, 802: through hole

503: Insertion guide guide groove

504, 803: Insertion guide groove

601: platform housing

701: Platform with LED Package Module

808: Stator

809: fixed part of the platform

Claims (9)

An LED package module having a plurality of LED units mounted thereon, the LED package module including a stator protruding from a front portion of an insertion direction; As a through hole, an insertion guide groove for guiding insertion of the protruding stator of the LED package module into an inner surface of the through hole, and a fixing part formed at an end of the insertion guide groove and coupled to the stator of the LED package module. A platform comprising a coupling part comprising a; And A housing to which the platform is coupled; Lighting module comprising a The method of claim 1, The insertion guide groove is a lighting module, characterized in that the straight or spiral The method of claim 1, The LED package module, the lighting module further comprises an elastic coupling ring for close coupling between the LED package module and the platform. The method of claim 1, Lighting module further comprises a housing cover lens coupled to the front of the housing The method of claim 1, The stator of the LED package module is inserted into the coupling portion of the platform, the lighting module, characterized in that the fixed rotation by rotating with the fixed portion of the platform Inserting an LED package module into the coupling part by receiving a guide of an insertion guide groove formed in the coupling type through-hole of the platform; After the LED package module is inserted, rotating and fixing the protruding stator of the LED package module to the fixing part of the platform; Coupling the platform coupled with the LED package module to a housing; Method of manufacturing a lighting module comprising a The method of claim 6, The LED package module, the method of manufacturing a lighting module further comprises an elastic coupling ring for close coupling between the LED package module and the platform. The method of claim 6, The insertion guide groove is formed in a straight or spiral shape to guide the insertion of the LED package module manufacturing method of the lighting module The method of claim 6, Method of manufacturing a lighting module characterized in that it further comprises the step of coupling the housing cover lens on the front of the housing

Images