TWI401385B - Led lamp capable of quickly dissipating heat in a closed space - Google Patents

Description

LED lamp with rapid heat conduction and heat dissipation in a confined space

The invention relates to an LED lamp with rapid heat conduction and heat dissipation in a confined space, in particular to a sealed space in which a heat conducting ceramic and a heat dissipating component are both disposed in a lamp, and can effectively heat and heat the heat generated by the LED lamp. In order to keep the LED lamp below the temperature that may cause light decay, effectively extend the life of the LED lamp and maintain high brightness.

According to the current research and development of LED lights, it has become very common. However, LED lamp related products have not been widely seen in the market. The main reason is that the temperature of the LED lamp is very high when it is energized and illuminated. When the efficiency of the heat dissipating structure is not good, there is a local accumulation of hot temperature, and once the temperature of the junction between the LED lamp and the heat dissipating structure continues to rise, the LED lamp is highly prone to high temperature light decay, and the luminous efficiency is lowered. Even damaged, so there is a need for improvement.

Therefore, the manufacturer has designed the heat-dissipating structure to be exposed, that is, the "high-efficiency LED lamp" of Taiwan Patent No. 98216259, which is directly provided with a non-metallic structure having a porous structure by a heat-dissipating lamp holder, and the structure is The external part of the heat-dissipating lamp holder is formed into a porous structure, which can directly increase the heat-dissipating area, but the heat-dissipating structure is exposed, which not only causes an indecent appearance, but also can directly contact the user's hand, thereby causing the possibility of direct burns. Some manufacturers also have the heat dissipating structure built in the lamp holder. For example, the patent of "Missing material heat shield structure" of M356856 is made of a porous material and has a built-in lamp body. The accommodating hole is provided with a light-emitting unit, and a metal sleeve is disposed outside, but the light-emitting unit has a great distance from the inner wall of the accommodating hole of the lamp cover, and the heat energy generated by the light-emitting unit is transmitted to the lamp cover through heat radiation. Wherein, the lampshade is dispersed in the air through the metal sleeve, and the heat transfer efficiency of the heat radiation is very low, and the light-emitting unit cannot be effectively generated in unit time. The amount is taken away, which also causes improper heat accumulation in the light-emitting unit. Therefore, there is also a loss of temperature higher than the light-off temperature, which causes the light-emitting unit to generate relative light decay, which is extremely bad for the service life of the light-emitting unit. As a result, some manufacturers have also made a case of the "Hot-source Dissipation Heat-Dissipation Module on Light-Emitting Diode Lamps" in Taiwan Patent No. M319374, which is to connect the central parts of the number of heat-dissipating plates in series to each other, and the number of heat-dissipating plates The state in which the tandem joints are horizontally outwardly diffused. In this structure, only the central positions of the heat dissipating plates are in contact with each other, so that the conduction of heat is completely transmitted from the center to the outside, and the transfer mode causes the guide of the heat guide. The channel is too narrow and concentrated, but the efficiency is limited, and the heat of the light-emitting diode cannot be effectively derived, which also causes local heat accumulation of the light-emitting diode, and also has problems that the conventional structure cannot overcome.

In view of this, the inventor of this case has carefully studied and accumulated years of experience in various ceramic structure products and technology research and development, and finally developed a heat-conducting ceramic suitable for the rapid heat-dissipation demand of the LED lamp, and applied it to the lamp for research and development. An LED lamp having rapid heat conduction and heat dissipation in a confined space.

The object of the present invention is to provide an LED lamp having rapid heat conduction and heat dissipation in a confined space, wherein the LED lamp and the housing are in the housing and the lamp housing of the sealed lamp, in addition to the LED lamp. A heat shield ceramic is disposed between the heat dissipating components, and the heat conductive ceramic forms a cold end with respect to the end of the LED lamp, and the heat conductive ceramic becomes a hot end with respect to the end surface of the heat dissipating component, and the cold end is provided by the hot end. The rapid and forced electromotive force guiding of the heat can effectively take away the heat generated by the LED lamp per unit time, and keep the temperature of the cold end under the LED light decay temperature, even forming a constant temperature state. And the heat of each part of the LED lamp is effectively guided by a large-area heat-transfer ceramic into a one-piece uniform heat-conducting structure, and the hot end forms a large-area heat-dissipating structure to each of the LED lamps. The local hot spot heat is effectively dispersed to the entire area of the hot end to form the first heat conduction and heat dissipation, and becomes a high-efficiency heat conduction structure.

Another object of the present invention is to provide an LED lamp having rapid thermal conduction and heat dissipation in a confined space, wherein the heat dissipating component also forms an area-conducting heat-conducting panel with respect to the one-piece heat-conductive ceramic, so that the heat dissipating component The heat conduction area of the heat conducting panel is greater than or equal to the hot end area of the heat conducting ceramic, so that the heat transferred from the hot end of the heat conducting ceramic enters a larger area of heat transfer and guidance, and the heat is more effectively guided. To achieve a more efficient heat conduction effect, the heat dissipating member is disposed adjacent to the center of the heat conducting panel, and a central column is arranged, and the central column is outwardly radiated to the outer side of the central column to the outer side of the solar column. The heat guided by the heat conducting panel of the component is effectively dispersed to the fins, and the heat is removed by the air on the surfaces of the fins, so that the heat dissipating component can effectively cooperate with the aforementioned heat conducting ceramic to be the LED. The heat generated by the lamp is taken out to become an overall high-efficiency heat-conducting structure.

The above described objects, features and other advantages of the present invention will become apparent to those skilled in the <RTIgt; An in-depth and specific understanding can be obtained, but the invention is not the only embodiment, and is described herein.

As shown in the figures 1 to 3, the lamp of the present invention mainly has a lamp holder 10 and a lamp housing 20 at the opening of the lamp holder 10, wherein the lamp holder 10 mainly has a shell. The housing shell 11 has an open end and is sleeved with the lamp housing 20 to form a closed space between the housing shell 11 and the lamp housing 20, and the other end is bundled and formed to be externally The electrical connection portion 12 is electrically connected to the inside of the sealed space between the housing shell 11 and the lamp housing 20 by a plurality of wires 13 connected to the LED lamps 14, and the LED lamps 14 are also electrically connected to each other. The connection of the plurality of LED lamps 14 is simultaneously fixed to a whole-piece heat-conductive ceramic 30, and the other end of the heat-conductive ceramic 30 is connected to a heat-dissipating component 40, and the other end of the heat-dissipating component 40 is fixed to the housing. At the bottom of the converging end, the heat conducting ceramic 30, the heat dissipating component 40 and the LED lamps 14 are all disposed in a sealed space between the housing 11 and the lamp housing 20.

The thermally conductive ceramic 30 of the present invention is disposed in a large area, and the thermally conductive ceramic 30 forms a cold end 301 with respect to the end surface of the LED lamp 14, and a hot end 302 is formed with respect to the end surface of the heat dissipating component 40. When the LED lamp 14 is electrically conductive to generate light and heat, the cold end 301 to the hot end 302 of the thermally conductive ceramic 30 also generate a thermal conductive potential, and the heat of the cold end 301 can be quickly transferred to the hot end 302, and The heat-conducting ceramics 30 are arranged in a large-area overall form. Therefore, when the LED lamps 14 partially form a hot spot to generate heat, the local heat can be derived from the local hot spot by the large-area whole-piece structure. The uniform heat transfer to the hot end 302 by the rapid diffusion of the thermoelectromotive force rapidly diffuses the heat level of the local hot spot of the LED lamp 14 of the cold end 301 to a faster vertical direction, and the hot end 302 is cooled to a full area. The shape, through the full-area heat dissipation mode, the surface temperature of the full hot end 302 can be reduced to a temperature lower than the local hot spots of the cold end 301, so as to effectively improve the overall heat dissipation effect.

According to the inventors' self-test, a thermal conductive ceramic 30 having a thickness of 10 mm has a current of 1.5 A and a voltage of 30.2 V, and the average temperature is expressed for 15 hours, and the temperature of the local hot spot at each of the LED lamps 14 at the cold end 301 is 90. °C, and the temperature to the surface of the hot end 302 is 69 ° C, has effectively lowered the temperature, and is a state of full area reduction, and when the thickness is increased by 1.5 times, the local temperature of the cold end 301 is still 90 ° C When the surface temperature of the hot end 302 is lower at about 57 ° C, when the thickness is reduced to 0.5 times, the local temperature of the cold end 301 is constant, and the surface temperature of the hot end 302 is about 73 ° C, so it can be effectively maintained. The cold junction 301 is below the temperature at which the local hot spot temperature of the LED lamp 14 is below the light decay, and achieves the purpose of protecting the LED lamp 14 and effectively increasing the service life.

The heat dissipating component 40, as shown in FIG. 3, has a heat conducting panel 41 having the same area as the heat conducting ceramic 30, and the heat of the hot end 302 of the thermally conductive ceramic 30 can be transmitted to the heat conducting panel 41; A center post 42 is disposed at the center of the other end surface of the panel 41. The center of the center post 42 is fixed to the bottom of the housing shell 11 by a fixing bolt 50. The heat dissipating component 40 is centered outward from the center pillar 42. The solar radiating manner forms a fin 420 extending from the heat conducting panel 41. One end of the fin 420 is connected to the center post 42 and the other end is connected to the opposite end surface of the heat conducting panel 41, so that the heat conducting panel 41 is led to Heat can be efficiently and quickly introduced into each of the fins 420 and dissipated by the surface of each of the fins 420.

As shown in FIG. 4, the heat conducting ceramics 30 and the heat dissipating component 40 can also protrude from the hot end 302 of the thermally conductive ceramic 30 to the heat conducting panel 41 by a large area of the extension portion 303. The heat dissipating member 40 is further disposed with a receiving groove 410 at a position opposite to the heat conducting panel 41 so as to be accommodated with each other, and the groove wall of the receiving groove 410 is surely contacted with the extending portion 303 to form a larger area. The heat dissipating member 40 is further provided with a receiving groove 410, and the overall volume and area shape of the heat conducting ceramic 30 is equivalent to the receiving groove 410. That is, it can be accommodated in the accommodating groove 410, and the heat dissipation can still be achieved. The contact area between the hot end 302 of the heat conductive ceramic 30 and the heat conducting surface 41 of the heat dissipating component 40 is greater than that of the heat conducting ceramic 30. The cold end 301 area, and can effectively improve the efficiency of heat conduction.

The foregoing LED lamps 14 are in the form of a dot-like structure according to the legend of the present invention, and may also be in the form of a strip-shaped strip, which is a conventional structure, and therefore will not be further described herein.

In summary, the invention disclosed in the present invention discloses an LED lamp having rapid heat conduction and heat dissipation in a confined space, and the special design has been "having industrial availability" should be undoubtedly, in addition, revealed in the creation of the case. The technical features have not been seen in the publications before the application, nor have they been used publicly. In addition, the facts of the above-mentioned effects are enhanced. Therefore, the "novelty" and "progressiveness" of the present invention are in compliance with the provisions of the Patent Law.提出Proposed an application for the creation of a patent in accordance with the law, praying for a review and early granting of a patent.

10‧‧‧ lamp holder

11‧‧‧ housing

12‧‧‧Power Department

13‧‧‧Wire

14‧‧‧LED lights

20‧‧‧Light shell

30‧‧‧Heat conductive ceramics

301‧‧‧ cold end

302‧‧‧ hot end

303‧‧‧Extension

40‧‧‧Heat components

41‧‧‧heat conducting panel

410‧‧‧ accommodating slots

42‧‧‧ center column

420‧‧‧ wing

50‧‧‧fixing bolt

Figure 1 is a schematic view of the appearance of the present invention.

Figure 2 is a perspective exploded view of the present invention.

Figure 3 is a schematic plan view of the present invention.

Fig. 4 is a plan view showing a second embodiment of the structure in which the thermally conductive ceramic and the heat dissipating member of the present invention are fitted.

Fig. 5 is a plan view showing a third embodiment of the structure in which the thermally conductive ceramic and the heat dissipating member of the present invention are fitted.

10. . . Lamp holder

11. . . Seat

12. . . Power supply department

13. . . wire

14. . . LED light

20. . . Lamp housing

30. . . Thermal ceramic

301. . . Cold end

302. . . Hot end

40. . . Heat sink

41. . . Thermally conductive panel

42. . . Center column

420. . . Wing

Claims (4)

An LED lamp having rapid heat conduction and heat dissipation in a confined space, wherein the lamp has: a lamp holder having a shell-shaped seat shell, the shell shell having an open end, the other end being bundled and forming an external electrical property a power-connecting portion, wherein the power-receiving portion connects the plurality of LED lamps to the inside of the housing, and the LED lamps are electrically connected to each other, and one end of the heat-dissipating component is thermally conductively connected to the LED lamps, and The other end is fixed at the bottom of the converging end of the housing; a lamp housing is sleeved at the opening of the lamp housing to form a closed space; a whole piece of thermally conductive ceramic is connected to the LED lamps to form a cold end The other end is connected to the heat dissipating component and forms a hot end. The heat dissipating component of the heat dissipating component is provided with a receiving groove. The heat conducting ceramic is received in the receiving groove, and the contact area between the hot end of the heat conducting ceramic and the heat conducting component of the heat dissipating component The whole-surface heat-dissipating form of the heat-conductive ceramic full-area contact, the cold-end end of the heat-conductive ceramic and the contact area of the LED lamp are in contact with the local area of the heat-conductive ceramic to form a local hot spot form, and the cold end and the hot end are energized on the LED lamps. Luminescence At the same time, a thermoelectromotive force is formed at the same time, and the thermally conductive ceramic is disposed in a sealed space formed by the lamp housing and the seat shell, and a center column is disposed at a center of the other end surface of the heat conducting panel, and a center of the center pillar is provided with a fixing bolt Pass through the bottom of the housing. The LED lamp having rapid heat conduction and heat dissipation in a confined space according to claim 1, wherein the heat dissipating component has a heat conducting panel having the same area as the heat conducting ceramic, and the thermally conductive ceramic hot end is fully in contact with the heat conducting panel. The heat dissipating component is formed by the central column as a center, and the fin is extended by the heat conducting panel, and one end of the fin is connected to the center pillar, and the other end is opposite to the heat conducting panel. connection. The LED lamp having the rapid heat conduction and heat dissipation in the confined space according to the first aspect of the invention, wherein the hot end of the thermally conductive ceramic protrudes from the heat conducting panel by a large area extending portion, and the extending portion of the thermally conductive ceramic It is placed in the receiving slot. The LED lamp having the rapid heat conduction and heat dissipation in the sealed space according to the first aspect of the invention, wherein the overall volume and area shape of the heat conductive ceramic is equivalent to the accommodating groove and is accommodated in the accommodating groove.