CN203322799U - A kind of LED downlight - Google Patents

Abstract

The utility model belongs to the technical field of the illumination lamps and lanterns technique and specifically relates to indicateAAn LED tube lamp. The light engine module comprises a radiator, a light source, a reflecting cover and a shell, wherein the radiator is provided with a heat dissipation through hole communicated with an inner cavity of the shell, and the shell is provided with a plurality of ventilation holes. When the heat dissipation device is used, the pressure inside and outside the shell is different, so that the gas inside and outside the shell generates convection, part of heat is directly dissipated from the ventilation holes and the heat dissipation through holes, the other part of heat is dissipated through the heat sink, a good heat dissipation effect is achieved, and the service life of the down lamp is prolonged. In addition, the outside of the shell is fixedly provided with a fastening strip, and the inner side of the cover body is fixedly provided with a fastening groove matched with the fastening strip, the utility model discloses a fastening strip and fastening groove relative rotation can be fixed and combined, need not be with the help of professional tool can be combined closely, its simple structure, installation combination and easy maintenance.

Description

A kind of LED downlight

technical field

The utility model relates to the technical field of lighting fixtures, in particular to an LED downlight.

Background technique

With the development of LED technology and the advantages of energy saving, long life and low radiation, LED lights are more and more widely used. Although LED lights have many advantages, there are also many disadvantages. The structure of the existing LED downlight lamp holder is relatively complex, usually composed of multiple parts, and the parts are fixed with screws, resulting in many production processes for LED lights, high production costs, and inconvenient installation and maintenance. Problems such as screw tripping are prone to occur.

In addition, the LED chip will generate a lot of heat when it is working. If the heat dissipation performance of the device is poor, the heat will not be dissipated quickly, and the impact on its performance and service life will even be fatal. As far as the current situation is concerned, the heat dissipation structure of LED downlights is generally more complicated, and the heat dissipation effect is not ideal. If the heat dissipation cannot be effective, the service life of the LED lamp will be affected.

Contents of the invention

The utility model provides an LED downlight aiming at the problems of the prior art, which has a simple structure, convenient installation and maintenance, and has good heat dissipation performance.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

An LED downlight comprises a light engine module and a cover body, the light engine module includes a radiator, a light source, a reflector and a housing, the radiator is connected to the upper end of the light source, and the reflector is connected to the light source The lower end is connected, and the light source and the reflector are installed in the inner cavity of the housing together. The upper end of the housing is fixedly connected with the radiator, and the radiator is provided with a heat dissipation through hole communicating with the inner cavity of the housing. The housing is provided with a number of ventilation holes; the outer side of the housing is fixedly provided with fastening strips, and the inner side of the cover is fixedly provided with fastening grooves matching the fastening strips, and the light engine module passes through The fastening strip is fastened with the fastening groove of the cover body.

Wherein, the heat sink includes a plurality of cooling fins and a heat dissipation bottom plate, one end of the heat dissipation fins is fixedly connected to the heat dissipation bottom plate, a heat dissipation space is formed between two adjacent heat dissipation fins, and the heat dissipation through holes are arranged in the heat dissipation space Corresponding heat sink.

Wherein, the heat dissipation bottom plate is provided with several threaded through holes, and the housing is provided with screwed posts corresponding to the threaded through holes.

Wherein, the radiator further includes a heat dissipation center column, the lower end of the heat dissipation center column is fixedly connected to the heat dissipation bottom plate, and the heat dissipation fin is fixedly connected to the outer circumference of the heat dissipation center column.

Wherein, a heat conduction plate is provided between the light source and the heat sink, and the heat conduction plate is fixedly connected to the back of the light source; when the light source is fixedly connected to the heat sink, the heat conduction plate abuts against the heat dissipation bottom plate.

Wherein, the housing is provided with at least two fastening strips, and the number of fastening grooves provided on the inner side of the upper end of the cover is consistent with the number of fastening strips.

Wherein, the fastening groove includes a limit bar and a fastening plate, and the fastening plate is located above the limit bar; four clamping blocks are arranged in parallel above the fastening plate, and the clamping block and the buckle The tight plate is integrally formed.

Wherein, the fastening strip is provided with a convex strip, and the fastening plate is provided with a groove matching the convex strip.

Wherein, the cover body is symmetrically installed with two spring fixing parts, and the spring fixing parts include several-shaped fixing blocks and springs, and the cover body is provided with fixing clips and connection ports, and the several-shaped fixing blocks The block is inserted into the connection port, and the left and right sides of the several-shaped fixed block are respectively fixedly connected with the fixed clip strips; the middle part of the several-shaped fixed block is hollowed out to form an installation space, and the two sides of the installation space are respectively provided with relatively distributed clips. The spring block, the spring is arranged in the installation space, and the two ends of the spring are inserted into the two snap ring blocks respectively.

Wherein, a protective sleeve is provided above the spring fixing wire frame of the spring, and a locking groove for clamping the spring fixing wire frame is provided on the protective sleeve.

The beneficial effects of the utility model:

The utility model is mainly composed of two parts, the light engine module and the cover body. The radiator of the light engine module is provided with a heat dissipation through hole communicating with the inner cavity of the housing, and the housing is provided with a number of ventilation holes; When the light source emits light, it will generate a lot of heat, which makes the pressure inside and outside the shell different, and the gas inside and outside the shell will convect, so part of the heat will be radiated directly from the ventilation holes and heat dissipation holes, and another part of the heat will be radiated out through the radiator. , so the utility model has a good heat dissipation effect and effectively prolongs the service life of the downlight.

In addition, when the light engine module is combined with the cover body, the fastening strip is aligned with the insertion opening of the fastening groove of the cover body, and then the light engine module is rotated so that the fastening strip and the fastening groove are closely matched. The utility model can be fixedly combined through the relative rotation of the fastening strips of the light engine module and the fastening grooves of the cover body, and can be closely combined without professional tools. The utility model has the advantages of simple structure, convenient installation and maintenance.

Description of drawings

Fig. 1 is a structural schematic diagram of an LED downlight of the present invention.

Fig. 2 is an exploded schematic view of an LED downlight of the present invention.

FIG. 3 is an exploded schematic view of the light engine module in the present invention.

Fig. 4 is an exploded schematic view of the cover body in the present invention.

Fig. 5 is an exploded schematic diagram of the spring fixing part in the present invention.

FIG. 6 is an enlarged schematic diagram of point A in FIG. 2 .

Reference numerals in FIGS. 1 to 6 include:

1—light engine module 2—cover body 3—radiator

31—radiating fin 32—radiating bottom plate 33—threaded through hole

34—Heat Dissipation Center Column 4—Light Source 5—Reflector

6—Shell 7—Heat Dissipation Holes 8—Ventilation Holes

9—fastening strip 10—fastening groove 11—screwed column

12—heat conduction plate 13—limiting strip 14—fastening plate

15—Clamping block 16—Protrusion 17—Groove

18—spring fixing piece 19—a few-shaped fixing block 20—spring

21—fixed clip 22—connection port 23—circlip block

24—spring fixed wire frame 25—protective sleeve.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the implementation modes are not limitations of the utility model. Referring to Fig. 1 to Fig. 6, the utility model will be described in detail below in conjunction with the accompanying drawings.

An LED downlight in this embodiment includes a light engine module 1 and a cover body 2, and the light engine module 1 includes a radiator 3, a light source 4, a reflector 5 and a housing 6, and the radiator 3 and the housing 6 The upper end of the light source 4 is connected, the reflector 5 is connected with the lower end of the light source 4, and the light source 4 and the reflector 5 are installed in the inner cavity of the housing 6, and the upper end of the housing 6 is fixedly connected with the radiator 3, so The heat sink 3 is provided with a heat dissipation through hole 7 communicating with the inner cavity of the housing 6, and the housing 6 is provided with a number of ventilation holes 8; the outer side of the housing 6 is fixedly provided with a fastening strip 9, so that The inner side of the cover body 2 is fixedly provided with fastening grooves 10 matching the fastening strips 9 , and the light engine module 1 is fastened after the fastening strips 9 rotate relative to the fastening grooves 10 of the cover body 2 .

The utility model is mainly composed of light engine module 1 and cover body 2. The heat sink 3 of the light engine module 1 is provided with a heat dissipation through hole 7 communicating with the inner cavity of the housing 6. Several ventilation holes 8 are provided; the light source 4 used in this embodiment is a COB-LED module, because the COB-LED module will generate a large amount of heat when emitting light, resulting in different pressures inside and outside the housing 6, making the inside and outside of the housing 6 The gas in the air generates convection, so part of the heat is directly dissipated from the ventilation hole 8 and the heat dissipation through hole 7. The ventilation hole 8, the inner cavity, and the heat dissipation through hole 7 form a heat dissipation channel, which is convenient for air flow, realizes air convection, and has a good heat dissipation effect. Also have another part of heat to dissipate through radiator 3. The light engine module 1 dissipates heat through convection heat dissipation between holes and radiator heat dissipation at the same time, which can quickly dissipate the heat generated by the COB-LED module. It can be seen that the utility model has a very good heat dissipation effect and can effectively extend the tube lamp life. The light engine module 1 described in the utility model can be assembled with light sources 4 of different powers, and can be applied to covers 2 of different sizes and specifications, and has good compatibility.

In addition, when the light engine module 1 is combined with the cover body 2, the fastening strip 7 is first aligned with the insertion opening of the fastening groove 10 of the cover body 2, and then the light engine module 1 is rotated to make the fastening strip 9 and the fastening groove 10 work close with. The utility model can be fixed and combined through the relative rotation of the fastening strip 9 of the light engine module and the fastening groove 10 of the cover body 2. Compared with the prior art, the utility model does not need to use screws to fix and combine the downlight. It can be tightly assembled without professional tools, and can be easily installed, assembled or repaired, and its structure is simple.

In this embodiment, the heat sink 3 includes a plurality of cooling fins 31 and a cooling base plate 32, one end of the cooling fins 31 is fixedly connected to the cooling base plate 32, and a cooling space is formed between two adjacent cooling fins 31. The heat dissipation through holes 7 are disposed on the heat dissipation bottom plate 32 corresponding to the heat dissipation space. Wherein, the heat sink 3 further includes a heat dissipation center column 34 , the lower end of the heat dissipation center column 34 is fixedly connected to the heat dissipation bottom plate 32 , and the heat dissipation fins 31 are fixedly connected to the outer circumference of the heat dissipation center column 34 .

Wherein, a heat conduction plate 12 is provided between the light source 4 and the heat sink 3, and the heat conduction plate 12 is fixedly connected to the back of the light source 4; 32 abutments.

When the COB-LED module is energized to emit light, part of the heat generated by it is dissipated through convection through the through holes, and most of the heat is dissipated through the radiator 3 . The heat is transferred from the back of the COB-LED module to the heat conduction plate 12 , and the heat conduction plate 12 then transfers the heat to the heat sink 31 , the heat dissipation bottom plate 32 and the heat dissipation center column 34 . Because the radiator 3 is provided with a plurality of cooling fins 31, its heat dissipation area is relatively large, and the heat is quickly dissipated, so the radiator 3 can achieve a good cooling effect.

Wherein, the heat dissipation bottom plate 32 is provided with a plurality of threaded through holes 33 , and the housing 6 is provided with a threaded post 11 corresponding to the threaded through holes 33 . The heat dissipation bottom plate 32 of the radiator 3 is fixedly connected with the bolted column 11 of the housing 4 by using screws, the connection is tight and it is convenient for installation and maintenance.

The casing 6 of the present invention is provided with at least two fastening strips 9 , and the number of fastening grooves 10 provided on the inner side of the upper end of the cover body 2 is consistent with the number of fastening strips 9 . In this embodiment, the casing 6 is symmetrically provided with two fastening strips 9 , and the two fastening strips 9 can be increased to three, four or more in order to make the combined installation more stable and compact. Wherein, the fastening groove 10 includes a limiting strip 13 and a fastening plate 14, the fastening plate 14 is located above the limiting strip 13; four clamping blocks 15 are arranged side by side above the fastening plate 14, The clamping block 15 is integrally formed with the fastening plate 14 . After the light engine module 1 is inserted into the cover body 2, both sides of the bottom of the housing 6 of the light engine module 1 abut against the limit bar 13 inside the cover body 2, which can play a role in supporting the light engine module 1 .

As shown in Figure 2, the left side of the fastening bar 9 is provided with a fixed block that can touch the upper end of the clamping block 15 when the fastening bar 9 is fastened into the fastening groove 10, and the lower end surface of the fixed block contacts the clamping block. Block 15, wherein the clamping block 15 is a small block, and its frictional force to the lower end surface of the fixed block is small, so that the fastening bar 9 can be smoothly rotated and combined. If the four clamping blocks 15 are replaced by a square block, the square block will produce greater resistance to the lower end surface of the fixed block on the left side of the fastening strip 9, especially when there is an error in the size of the fastening strip 9, it will So that the fastening strip 9 cannot be fastened to the fastening groove 4 .

Wherein, the fastening strip 9 is provided with a convex strip 16 , and the fastening plate 14 is provided with a groove 17 matching the convex strip 16 . When the light engine module 1 rotates relative to the cover body 2, the convex strip 16 is forced into the groove 17, so that the fastening strip 9 and the fastening groove 10 are tightly fitted together, and the convex strip 16 prevents the light engine from The module 1 cannot be rotated casually. If it is necessary to remove the light engine module 1 from the fastening groove 10, the convex strip 16 must be forced to slide out of the groove 17, otherwise the light engine module 1 cannot be easily released from the fastening groove. 10 removed.

Wherein, the cover body 2 is symmetrically installed with two spring fixing parts 18, and the spring fixing parts 18 include several-shaped fixing blocks 19 and springs 20, and the cover body 2 is provided with a fixing clip 21 and a connecting port. 22. The several-shaped fixed block 19 is inserted into the connection port 22, and the left and right sides of the several-shaped fixed block 19 are respectively fixedly connected with the fixed clips 21; the middle part of the several-shaped fixed block 19 is hollowed out to form an installation space , the two sides of the installation space are provided with relatively distributed snap ring blocks 23 respectively, the spring 20 is arranged in the installation space, and the two ends of the spring 20 are inserted into the two snap ring blocks 23 respectively.

As shown in Figure 5, the spring fixing parts 18 of the present utility model are distributed symmetrically on both sides of the cover body 2. The cover body 2 is fixedly combined into one body, and then the two ends of the spring 20 are respectively plugged into the two snap ring blocks 23 using jigs. The spring fixing part 18 can quickly assemble and install the spring 20 on the cover body 2 only by means of jigs. The assembly process is less and the production cost can be effectively saved.

As shown in Figure 6, a protective sleeve 25 is provided above the spring fixing wire frame 24 of the spring 20, and the protective sleeve 25 in this embodiment is a plastic shell; The draw-in slot of the wire frame 24 (not marked in the figure).

The spring 20 is generally formed by bending steel wire, and the two ends of the spring 20 have a spring fixing wire frame 24 attached thereto. When the downlight is inserted into the lamp hole, the spring fixing wire frame 24 will abut against the lamp hole The two sides of the lamp hole play a supporting role. Since the spring 20 has a rebound force, the spring fixing wire frame 24 also has pressure on both sides of the lamp hole. The spring 20 described in the utility model is a torsion spring. Wherein, the spring fixing wire frame 24 can be completely snapped into the slot of the plastic shell, so as to protect the spring fixing wire frame 24 from being directly worn and oxidized and corroded. In addition, a friction strip is provided on the plastic casing, and the friction strip is arranged at the end of the plastic casing. After the downlight is embedded in the lamp hole, the friction strip touches the surfaces on both sides of the lamp hole.

The above content is only a preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and scope of application. The content of this specification should not be understood as Limitations on the Invention.

Claims (10)

1. A LED downlight, comprising a light engine module and a cover, the light engine module including a radiator, a light source, a reflector and a housing, the radiator is connected to the upper end of the light source, and the reflector is connected to the light source The lower end of the light source is connected, and the light source and the reflector are installed in the inner cavity of the housing together, and the upper end of the housing is fixedly connected with the radiator. It is characterized in that: the radiator is provided with a The housing is provided with a number of ventilation holes; the outer side of the housing is fixedly provided with fastening strips, and the inner side of the cover is fixedly provided with fastening grooves matching the fastening strips. The light engine module is fastened to the fastening groove of the cover body through the fastening strip. 2. A LED downlight according to claim 1, characterized in that: the radiator includes a plurality of heat sinks and a heat dissipation bottom plate, one end of the heat sink is fixedly connected to the heat dissipation bottom plate, and two adjacent heat sinks A heat dissipation space is formed between them, and the heat dissipation through holes are arranged on the heat dissipation bottom plate corresponding to the heat dissipation space. 3. An LED downlight according to claim 2, characterized in that: the heat dissipation bottom plate is provided with several threaded through holes, and the housing is provided with screwed posts corresponding to the threaded through holes. 4. An LED downlight according to claim 2, characterized in that: the radiator also includes a heat dissipation center column, the lower end of the heat dissipation center column is fixedly connected to the heat dissipation bottom plate, and the heat dissipation fin is connected to the heat dissipation center The outer circumference of the column is fixedly connected. 5. A LED downlight according to claim 2, characterized in that: a heat conduction plate is provided between the light source and the heat sink, and the heat conduction plate is fixedly connected to the back of the light source; when the light source is fixedly connected to the heat sink , the heat conduction plate abuts against the heat dissipation bottom plate. 6. An LED downlight according to claim 1, characterized in that: the housing is provided with at least two fastening strips, and the number of fastening grooves provided on the inner side of the upper end of the cover body is the same as that of the fastening strips. the same number. 7. An LED downlight according to claim 1, characterized in that: the fastening groove includes a limiting strip and a fastening plate, and the fastening plate is located above the limiting strip; Four clamping blocks are arranged in parallel on the upper side, and the clamping blocks are integrally formed with the fastening plate. 8. The LED downlight according to claim 7, characterized in that: the fastening strip is provided with a convex strip, and the fastening plate is provided with a groove matching the convex strip. 9. A LED downlight according to claim 1, characterized in that: the cover body is symmetrically installed with two spring fixing parts, the spring fixing parts include several-shaped fixing blocks and springs, and the cover body There are fixed clips and connection ports on the top, and the left and right sides of the several-shaped fixed block are respectively fixedly connected with the fixed clips; the middle part of the several-shaped fixed block is hollowed out to form an installation space, and the two sides of the installation space are respectively set There are relatively distributed snap ring blocks, the spring is arranged in the installation space, and the two ends of the spring are inserted into the two snap ring blocks respectively. 10. An LED downlight according to claim 9, characterized in that: a protective cover is provided above the spring fixing wire frame of the spring, and a slot for clamping the spring fixing wire frame is provided on the protective cover .

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