CN101666480A - Light-emitting diode lamp and heat-dissipation waterproof cover thereof - Google Patents

Abstract

The invention relates to a Light Emitting Diode (LED) lamp and a heat dissipation waterproof cover thereof. The lighting structure comprises an LED module, and the heat dissipation waterproof cover covers the LED module. The heat dissipation waterproof cover comprises a plurality of drainage sheets, wherein gaps are formed between adjacent drainage sheets so as to improve the heat dissipation efficiency of the LED module by utilizing air convection. Adjacent such drainage sheets have overlapping portions to prevent, for example, rain water from infiltrating.

Description

Light-emitting diode lamp and its heat-dissipating waterproof cover

technical field

The invention relates to a light-emitting diode (LED) lamp, in particular to an LED lamp with heat dissipation and waterproof functions and a heat dissipation and waterproof cover thereof.

Background technique

After decades of hard work, light-emitting diode light sources have been proven to have the advantages of small size, low heat generation, low power consumption, long life, shock resistance, etc., and are widely used in various display applications in daily life. In view of the recent soaring oil prices, LEDs have better energy-saving effects than traditional lamps, so that LED street lamps will replace traditional lamps in the future and become the mainstream of lighting.

Compared with traditional incandescent lamps under the same illuminance, light-emitting diode lamps can save more than 40% of electric energy. Because of this, the energy-saving measures of various countries include the introduction of LEDs into various lighting fields.

However, because high-power LED lamps for lighting emit high heat, if the heat cannot be dissipated quickly, not only will the luminous efficiency of the LED decrease, but also the service life of the LED will be affected.

In the current LED lighting applications, common problems include: (1) the lamp cannot provide a heat dissipation path for hot air to penetrate the interior of the lamp from bottom to top; (2) the waterproof cover of the lamp covers the entire lamp, and heat convection can only pass through the side Cold air exchange on the side is extremely unfavorable to the vertical exchange characteristics of heat convection; (3) due to the poor heat dissipation effect, the heat accumulation effect in the center of the lamp is more serious than that at the edge; (4) the lamp does not provide the function of drainage and diversion; (5) although Enlarging the heat dissipation holes on the side of the lamp can improve the heat dissipation capacity, but it will reduce the rainproof and waterproof ability; (6) the waterproof mechanism must be combined with the thermal process, resulting in high cost and lack of application flexibility; (7) the horizontal fins for heat dissipation in the lamp The thermal convection efficiency is relatively poor; and (8) the cooling fins enclosed by the waterproof cavity cannot convect with the cold air outside.

Obviously, how to take into account the heat dissipation and waterproof functions of LED lamps is actually a problem that must be overcome in current LED applications, and there are certain technical obstacles that need to be overcome.

Contents of the invention

The invention provides an LED lamp and its heat dissipation and waterproof cover, which has an excellent rainproof, waterproof and heat convection mechanism, and can simultaneously meet the functional requirements of heat dissipation and waterproof.

The LED lamp of the present invention comprises a lighting structure and a heat dissipation and waterproof cover. The lighting structure includes an LED module, wherein the heat dissipation waterproof cover covers the LED module. The heat dissipation waterproof cover includes a plurality of first drainage sheets, and gaps are formed between adjacent first drainage sheets, so as to increase the heat dissipation efficiency of the LED module by air convection. Adjacent first drainage sheets have overlapping portions to prevent the infiltration of rainwater, for example.

In one embodiment, each first drainage sheet is formed by a drainage surface and a groove connected to one side of the drainage surface, the drainage surface is inclined toward the direction of the groove, and is used to guide the water on the drainage surface to the groove in the slot.

In one embodiment, the heat dissipation and waterproof cover may further include a second drainage element, and the second drainage element cooperates with the first drainage element to cover the LED module. The second draining element is arranged at the center, and the first draining element is arranged at both sides of the second draining element and arranged symmetrically. The drainage surfaces of the first drainage elements on both sides are inclined towards the direction of the second drainage elements.

To sum up, the LED lamp and its heat dissipation waterproof cover of the present invention not only provide a channel for air heat convection, but also can effectively improve the heat dissipation efficiency of the LED module, and provide a mechanism to block the main water flow, only need to target the sensitive electromechanical body, Further airtight and moisture-proof treatment can achieve the purpose of outdoor weather resistance and rain protection.

Description of drawings

1A and 1B show a schematic diagram of the lighting structure of an LED lamp according to an embodiment of the present invention;

2A, 2B and 2C show schematic diagrams of an LED lamp according to an embodiment of the present invention;

2D is a schematic side view of an LED lamp according to another embodiment of the present invention;

Fig. 3 is a three-dimensional schematic diagram of a drainage member of an LED lamp according to another embodiment of the present invention.

Fig. 4 is a cross-sectional view of section line 1-1 in Fig. 3 .

Fig. 5 shows a schematic diagram of the application of the LED lamp of the present invention.

Wherein, the reference signs are explained as follows:

10 LED lamps

11 Lighting structure 12 Fins

13 Shell 14 LED module

15 LED component 16 Connecting seat

17～19 gaps 20 heat dissipation waterproof cover

21 Drainage 22 Drainage

30 drainage surface 32 groove

33 bottom surface 34 extension

35 inclined plane 36 connecting plate

40 poles

Detailed ways

The LED lamp and its heat dissipation and waterproof cover of the present invention will be described in detail below with reference to the accompanying drawings.

1A and 1B show a lighting structure 11 , and FIG. 1B is a top view of FIG. 1A turned upside down. A plurality of strip-shaped LED modules 14 (five in this embodiment) are disposed above the casing 13 (see FIG. 1A ), and each LED module 14 is equipped with a plurality of LED elements 15 to emit illumination light. The LED module 14 is provided with a plurality of fins 12 opposite to the side where the LED elements 15 are provided. The fins 12 are included in the casing 13 for heat dissipation of the LED element. In this embodiment, the fins 12 are sheet-shaped, arranged in sequence along the longitudinal direction of the LED module 14 and each fin 12 is arranged horizontally. The other side of the housing 13 is provided with a connecting seat 16 for connecting and supporting a lamp and a power supply (not shown).

In general outdoor lighting installations, the irradiating light is directed downwards, so traditionally, a shade is placed on the casing 13 to prevent rain. However, since the fins 12 may be sealed in the casing 13 after the cover is closed, although it may not be completely sealed, it still causes poor heat dissipation, which affects the luminous efficiency of the LED element 15 and reduces its service life.

In view of this, the present invention provides a heat dissipation and waterproof cover above the lighting structure 11, which can provide good heat convection to increase the heat dissipation effect, and also has waterproof and drainage functions, and can be applied to outdoor lighting.

FIG. 2A shows an LED lamp 10 according to an embodiment of the present invention, in which besides the lighting structure 11 shown in FIG. 1 , a heat dissipation and waterproof cover 20 is provided above the lighting structure 11 .

FIG. 2B is a top view of the heat dissipation waterproof cover 20 , and FIG. 2C shows a side view structure corresponding to the lower fins 12 . According to an embodiment, the heat dissipation and waterproof cover 20 includes a plurality of drainage elements 21 symmetrically disposed on both sides to cover the fins 12 of the LED modules 14 in each row. The drainage element 21 includes a drainage surface 30 and a groove 32 . The drainage surface 30 can guide water (such as rainwater) into the groove 32 . The setting of the drainage surface 30 of the drainage member 21 must extend slightly above the groove 32 of the adjacent drainage member 21, that is, the two overlap in the vertical direction, so as to avoid the infiltration of rainwater. The heat dissipation and waterproof cover 20 may further include a drainage member 22, which is arranged on the fin 12 of the central LED module 14. It does not have a groove, but the two sides are slightly bent and extend downward, so as to guide rainwater to flow into the adjacent two sides. In the groove 32 of the drainage member 21.

According to this embodiment, a gap 17 is formed between two adjacent LED modules 14; a gap 18 is formed between the drainage surface 30 of the drainage member 21 and the groove 32 of the adjacent drainage member 21; A gap 19 is formed between the grooves 32 . In other words, the present invention can form gaps 18 and 19 between adjacent two drainage members 21 or 21 and 22, and form a non-sealed open state. Therefore, gaps 17, 18 and 19 form passages for air convection, that is, hot air is provided. The heat dissipation path penetrating the interior of the lamp from bottom to top can increase the heat dissipation effect of the fins 12 .

FIG. 2D shows a schematic side view of an LED lamp according to another embodiment of the present invention, wherein the drainage elements 21 are all arranged in the same direction. Using a single design for the drains in this way simplifies the material preparation problem. In practice, according to the technical disclosure of the present invention, any combination of various drainage elements (including two or more types) that can provide waterproof and convective functions is also covered by the scope of the present invention.

FIG. 3 shows the detailed structure of the drain member 21 , and FIG. 4 is a cross-sectional view along the section line 1-1 in FIG. 3 . The drainage element 21 includes a drainage surface 30 and a groove 32 . One side of the drainage surface 30 extends and bends downward to connect with the groove 32 . Specifically, the downwardly extending portion 34 of one side of the drainage surface 30 forms a side surface of the groove 32 . FIG. 4 shows that the groove 32 forms slopes 35 on both sides along its longitudinal direction, and each slope 35 extends out of the groove 32 to form a connecting plate 36 for fixing to the outer frame of the housing 13 . The angle between the slope 35 and the groove bottom 33 is about 95-160 degrees, and is used for collecting and draining rainwater.

Referring to FIG. 5 , it is an embodiment of the present invention applied to a street lamp. The LED lamp 10 is mounted on the bent and extended front end of a light pole 40. In this way, the overall LED lamp 10 will be inclined, so that the groove 32 along its longitudinal direction It is also inclined so that the rainwater accumulated in the groove 32 can be discharged smoothly along the slope 35 .

In addition to being applied to street lamps, the present invention can also be applied to the lighting of residential roofs or bus stop signs. In a word, as long as the LED lamp 10 is installed and tilted forward or backward, it can drain water smoothly and have good heat dissipation effect.

The technical content and technical features of the present invention have been disclosed above, but those skilled in the art may still make various changes and modifications based on the teaching and disclosure of the present invention without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should not be limited to the scope disclosed in the embodiments, but should include various changes and modifications that do not deviate from the spirit of the present invention, and are covered by the scope defined in the appended claims.

Claims (10)

1. A light-emitting diode lamp, comprising: A lighting structure comprising LED modules: A heat dissipation and waterproof cover covers the LED module and includes a plurality of first drainage sheets, wherein a first gap is formed between adjacent first drainage sheets, and there are overlapped parts in the vertical direction. 2. The light-emitting diode lamp according to claim 1, wherein each first drainage sheet is formed by a drainage surface and a groove connected to one side of the drainage surface, and the drainage surface is inclined toward the direction of the groove, so as to The water on the drainage surface is guided into the groove, and the groove is provided with slopes on both sides in the longitudinal direction, the angle between the slope and the bottom surface of the groove is between 95 and 160 degrees, and the groove is along the Longitudinal tilt. 3. The light-emitting diode lamp according to claim 1, wherein there are multiple light-emitting diode modules, and there is a second gap between adjacent light-emitting diode modules, and the second gap forms air convection with the first gap road. 4. The LED lamp according to claim 1, wherein the LED module is provided with a plurality of fins to dissipate heat from the LED module, and each first drainage fin covers the plurality of fins of the corresponding LED module piece. 5. The light-emitting diode lamp according to claim 1, wherein the heat dissipation and waterproof cover further comprises a second drainage member, and the second drainage member cooperates with the first drainage member to cover the LED module, and the second drainage member is set In the center, the first drainage member is arranged on both sides of the second drainage member, and the first drainage members are arranged symmetrically, and the drainage surfaces of the first drainage members on both sides face the direction of the second drainage member The second drainage member is inclined, and the second drainage member has a bent downward extension portion, and the extension portion guides the water on the second drainage member into the groove of the adjacent first drainage member. 6. The LED lamp according to claim 5, wherein a third gap is formed between the second drainage member and the adjacent first drainage member, and the groove between the second drainage member and the adjacent first drainage member A third gap is formed between the grooves. 7. A heat dissipation and waterproof cover for a light emitting diode lamp, the heat dissipation and waterproof cover covers the light emitting diode module of the light emitting diode lamp, and includes a plurality of first drainage sheets, a first gap is formed between adjacent first drainage sheets, and overlap in the vertical direction. 8. The heat dissipation and waterproof cover for LED lamps according to claim 7, wherein each first drainage sheet is formed by a drainage surface and a groove connected to one side of the drainage surface, and the drainage surface is inclined toward the direction of the groove, For guiding the water on the drainage surface into the groove, the groove is provided with slopes on both sides along the longitudinal direction, and the angle between the slopes and the bottom surface of the groove is between 95 and 160 degrees. 9 . The heat dissipation and waterproof cover of the LED lamp according to claim 7 , wherein the heat dissipation and waterproof cover further comprises a second drainage member, and the second drainage member cooperates with the first drainage member to cover the LED module. 10. The heat dissipation and waterproof cover of LED lamps according to claim 9, wherein the second drainage member is arranged in the center, the first drainage member is arranged on both sides of the second drainage member, and the first drainage member The pieces are symmetrically arranged, the drainage surface of the first drainage piece on both sides is inclined towards the direction of the second drainage piece, and the second drainage piece has a bent downward extension part, and the extension part puts the second drainage piece The water on the top is guided into the groove of the adjacent first drainage member.

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