CN104359026A - LED (light emitting diode) self-ballasted lamp - Google Patents

Abstract

The invention relates to an LED (light emitting diode) self-ballasted lamp. The LED self-ballasted lamp comprises a lamp adapter, a rear lamp shell, a transparent front lamp shell and an LED light source module; the rear lamp shell is arranged on the lamp adapter; the transparent front lamp shell is arranged on the rear lamp shell, and the transparent front lamp shell and the rear lamp shell collectively form an accommodating cavity; the LED light source module is accommodated in the accommodating cavity, the top of the front lamp shell is concaved into the accommodating cavity to form a concave part, the concave part pushes against the LED light source module, and a plurality of first heat radiating holes are formed in the concave part. According to the LED self-ballasted lamp, the top of the transparent front lamp shell is concaved into the accommodating cavity to form the concave part which pushes against the LED light source module, and the first heat radiating holes are formed in the concave part. The heat produced by the LED light source module is effectively radiated through the first heat radiating holes, so that the problem that the traditional LED self-ballasted lamp is poor in heat radiation performance is solved, and the light failure of the LED light source module can be reduced.

Description

LED self-ballasted lamp

technical field

The invention relates to lighting technology, in particular to an LED self-ballasted lamp.

Background technique

Traditional incandescent lamps have disadvantages such as low luminous efficiency, high heating temperature and short lifespan (about 1000 hours). Therefore, incandescent lamps have become obsolete objects in various countries and have been replaced by LED lamps. Energy-efficient LED lamps are based on interchangeability and are designed in the standard shape of incandescent lamps. The usual solution is to place the LED constant current power supply in the lamp body of the LED bulb lamp with a miniaturized design, and design the whole lamp to conform to the size standard of the incandescent lamp.

Traditional LED self-ballasted lamps generally use a glass shell as the shell, and the heat emitted by the LED light source is diffused through the heat sink at the rear, resulting in the heat not being conducted outward in time, resulting in poor heat dissipation of the LED self-ballasted lamp , The LED light source has a large light attenuation.

Contents of the invention

Based on this, it is necessary to provide an LED self-ballasted lamp with better heat dissipation.

An LED self-ballasted lamp, comprising:

Lamp;

The rear lamp housing is arranged on the lamp holder;

A transparent front lamp housing, the transparent front lamp housing is arranged on the rear lamp housing, and the transparent front lamp housing and the rear lamp housing together form a receiving cavity; and

The LED light source module is accommodated in the accommodation cavity, the top of the transparent front light housing is recessed into the accommodation cavity to form a concave portion, the concave portion is opposed to the LED light source module, and the concave portion A plurality of first cooling holes are opened on the inlet portion.

In one of the embodiments, the surface of the transparent front lamp housing is a matte surface.

In one of the embodiments, the transparent front lamp housing is a PC plastic transparent front lamp housing.

In one of the embodiments, it further includes a radiator, the radiator is arranged in the rear light housing, and the radiator includes a shaft body and a plurality of cooling ribs distributed on the surface of the shaft body.

In one of the embodiments, it also includes a heat dissipation support, the heat dissipation support is arranged on the heat sink, there are multiple LED light source modules, and a plurality of the LED light source modules are arranged around the heat dissipation support .

In one of the embodiments, the LED light source module includes a plurality of LED point light sources and a heat dissipation substrate, the plurality of LED point light sources are distributed on the surface of the heat dissipation substrate, and the heat dissipation substrate is arranged on the on the cooling bracket.

In one of the embodiments, the middle part of the heat dissipation substrate is bent to form a first bent part and a second bent part, and a "V" shape is formed between the first bent part and the second bent part. structure, and LED point light sources are provided on the first bending portion and the second bending portion.

In one of the embodiments, the rear light housing includes a main housing and a connecting portion connected to one end of the main housing, the main housing is a trumpet-shaped structure, including a large end and a small end with a diameter smaller than the large end. The head end, the connecting part is arranged on the small head end, and the connecting part is connected with the lamp cap.

In one embodiment, a plurality of second cooling holes are opened on the side wall of the main casing, and the plurality of second cooling holes are distributed in an array on the main casing.

In one of the embodiments, external threads are provided on the outer surface of the lamp cap.

Compared with traditional LED self-ballasted lamps, the above-mentioned LED self-ballasted lamps have at least the following advantages:

Firstly, in the above-mentioned LED self-ballasted lamp, the top of the transparent front lamp housing is recessed into the receiving cavity to form a concave portion against the LED light source module, and a plurality of first cooling holes are opened in the concave portion. The heat emitted by the LED light source module is effectively dissipated through the first cooling hole, which solves the problem of poor heat dissipation of the traditional LED self-ballasted lamp and reduces the light decay of the LED light source module.

In addition, a second cooling hole is provided on the rear lamp housing, so that the rear lamp housing and the transparent front lamp housing provided with the first cooling hole form a flow guide structure through the receiving cavity, and the LED light source module is emitted by air convection. The heat of the LED self-ballasted lamp is transmitted to the outside of the LED self-ballasted lamp, which further improves the heat dissipation of the entire LED self-ballasted lamp.

Description of drawings

Fig. 1 is an explosion diagram of an LED self-ballasted lamp in an embodiment of the present invention;

Fig. 2 is a structural schematic diagram of the rear lamp housing of the LED self-ballasted lamp shown in Fig. 1;

Fig. 3 is a top view of the transparent front lamp housing in the LED self-ballasted lamp shown in Fig. 1;

Fig. 4 is a schematic structural view of the radiator in the LED self-ballasted lamp shown in Fig. 1;

FIG. 5 is a schematic structural diagram of the LED light source module in the LED self-ballasted lamp shown in FIG. 1 .

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention is only for the purpose of describing specific embodiments, and is not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to FIG. 1 , an LED self-ballasted lamp 100 in an embodiment of the present invention includes a lamp base 110 , a rear lamp housing 120 , a transparent front lamp housing 130 and an LED light source module 140 .

The lamp head 110 is used to be fixed with the external fixing member, and also plays the role of electrical connection. Specifically, the outer surface of the lamp holder 110 is provided with an external thread 112 for threaded connection with an external fixing member.

Please also refer to FIG. 2 , the rear lamp housing 120 is disposed on the lamp holder 110 . The rear lamp housing 120 is disposed on the lamp holder 110 , and the rear lamp housing 120 includes a main housing 121 and a connecting portion 123 connected to one end of the main housing 121 . The main casing 121 is a trumpet-shaped structure, including a large end 121a and a small end 121b with a diameter smaller than that of the large end 121a. The connecting portion 123 is disposed on the small head end 121 b, and the connecting portion 123 is connected to the lamp cap 110 .

Specifically, in this embodiment, the lamp cap 110 is provided with threaded holes (not shown). The connecting portion 123 is provided with an external thread, and the connecting portion 123 is screwed into the threaded hole.

The transparent front light housing 130 is approximately a hollow hemispherical housing. The transparent front lamp housing 130 is disposed on the rear lamp housing 120, and the transparent front lamp housing 130 and the rear lamp housing 120 together form a receiving chamber (not shown).

The LED light source module 140 is accommodated in the accommodation cavity. The light emitted by the LED light source module 140 is emitted through the transparent front lamp housing 130 . The surface of the transparent front lamp housing 130 is treated with a matte surface, so that the surface of the transparent front lamp housing 130 is matte, so that the LED self-ballasted lamp 100 has an anti-glare function.

Please also refer to FIG. 3 , the top of the transparent front light housing 130 is recessed into the receiving cavity to form a concave portion 132 . The concave portion 132 is opposed to the LED light source module 140 , and a plurality of first cooling holes 134 are defined on the concave portion 132 .

The top of the transparent front lamp housing 130 is recessed into the receiving cavity to form a recessed portion 132 against the LED light source module 140 , and a plurality of first cooling holes 134 are defined on the recessed portion 132 . The heat emitted by the LED light source module 140 is effectively dissipated through the first cooling hole 134 , which solves the problem of poor heat dissipation of the traditional LED self-ballasted lamp and reduces the light decay of the LED light source module 140 .

Please refer to FIG. 2 again, a plurality of second cooling holes 125 are opened on the sidewall of the main casing 121 , and the plurality of second cooling holes 125 are distributed in an array on the main casing 121 . Open the second cooling hole 125 on the rear lamp housing 120, so that the air guide structure through the receiving cavity is formed between the rear lamp housing 120 and the transparent front lamp housing 130 provided with the first cooling hole 134. The heat emitted by the module 140 is transmitted to the outside of the LED self-ballast lamp 100 .

A plurality of third cooling holes (not shown) are defined on the end surfaces of the main housing 121 and the small head end 121b, and the plurality of third cooling holes are arranged around the connecting portion 123 . To further improve the heat dissipation performance of the entire LED self-ballasted lamp 100 .

The transparent front lamp housing 130 is a PC (Polycarbonate, polycarbonate) plastic transparent front lamp housing 130, which is light in weight and reduces the weight of the entire lamp. The rear lamp housing 120 is an engineering plastic rear lamp housing 120 to further reduce the weight of the lamp. It can be understood that the transparent front lamp housing 130 or the rear lamp housing 120 is not limited to the materials mentioned above, and can also be made of other lightweight materials.

Please also refer to FIG. 4 , the LED self-ballasted lamp 100 also includes a radiator 150 . The radiator 150 is disposed in the rear light housing 120 , and the radiator 150 includes a shaft body 152 and a plurality of cooling ribs 154 distributed on the surface of the shaft body 152 . A heat dissipation channel (not shown) is formed between adjacent heat dissipation ribs 154 . Due to air convection, external air enters the heat dissipation channel from the second heat dissipation hole 125 or the third heat dissipation hole, and takes away the heat from the heat dissipation ribs 154 on both sides. The air with heat flows out from the first heat dissipation hole 134 along the heat dissipation channel.

Please refer to FIG. 1 again, the LED self-ballasted lamp 100 also includes a cooling bracket 160 . The heat dissipation support 160 is disposed on the heat sink 150 , there are multiple LED light source modules 140 , and the plurality of LED light source modules 140 are disposed on the heat dissipation support 160 around them. The LED self-ballasted lamp 100 also includes a power supply module 170 , and the power supply module 170 is electrically connected to the LED light source module 140 .

Please also refer to FIG. 5 , the LED light source module 140 includes a plurality of LED point light sources 142 and a heat dissipation substrate 144 . A plurality of LED point light sources 142 are distributed on the surface of the heat dissipation substrate 144 , and the heat dissipation substrate 144 is arranged on the heat dissipation support 160 . Specifically, in this embodiment, the heat dissipation substrate 144 is an MCPCB (Metal Base Printed Circuit Board). The middle portion of the heat dissipation substrate 144 is bent to form a first bent portion 144a and a second bent portion 144b. A "V" shape structure is formed between the first bending part 144a and the second bending part 144b, and LED point light sources 142 are disposed on the first bending part 144a and the second bending part 144b. The heat dissipation substrate 144 has a "V"-shaped structure, which can increase the irradiation angle of the LED light source module 140 to achieve the effect of simulating an incandescent lamp.

Compared with the traditional LED self-ballasted lamp, the above-mentioned LED self-ballasted lamp 100 has at least the following advantages:

Firstly, in the above-mentioned LED self-ballast lamp 100, the top of the transparent front lamp housing 130 is recessed into the receiving cavity to form a concave portion 132 against the LED light source module 140, and a plurality of first Heat dissipation holes 134 . The heat emitted by the LED light source module 140 is effectively dissipated through the first cooling hole 134 , which solves the problem of poor heat dissipation of the traditional LED self-ballasted lamp and reduces the light decay of the LED light source module 140 .

In addition, a second heat dissipation hole 125 is provided on the rear lamp housing 120, so that a flow guide structure is formed between the rear lamp housing 120 and the transparent front lamp housing 130 provided with the first heat dissipation hole 134 to pass through the storage cavity, and the air convection is used to dissipate the air. The heat emitted by the LED light source module 140 is transmitted to the outside of the LED self-ballasted lamp 100 , which further improves the heat dissipation of the entire LED self-ballasted lamp 100 .

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. a LED self-ballasted lamp, is characterized in that, comprising:

Lamp holder;

Rear lamp housing, is arranged on described lamp holder;

Transparent head lamp body, described transparent head lamp body is arranged on described rear lamp housing, and described transparent head lamp body and described rear lamp housing form host cavity jointly; And

LED light source module, is contained in described host cavity, and the top of described transparent head lamp body is recessed formation recess to described host cavity, and the female portion and described LED light source module offset, and the female portion offer multiple first louvre.

2. LED self-ballasted lamp according to claim 1, is characterized in that, the surface of described transparent head lamp body is cloudy surface.

3. LED self-ballasted lamp according to claim 1, is characterized in that, described transparent head lamp body is PC plastic, transparent head lamp body.

4. LED self-ballasted lamp according to claim 1, is characterized in that, also comprise radiator, and described radiator is arranged in described rear lamp housing, and described radiator comprises axis body and is distributed in multiple radiating ribs on described axis body surface.

5. LED self-ballasted lamp according to claim 4, is characterized in that, also comprise cooling stand, and described cooling stand is arranged on described radiator, and described LED light source module is multiple, and multiple described LED light source module is compassingly set on described cooling stand.

6. LED self-ballasted lamp according to claim 5, it is characterized in that, described LED light source module comprises multiple LED point light source and heat dispersion substrate, and described multiple LED point light source is distributed in the surface of described heat dispersion substrate, and described heat dispersion substrate is arranged on described cooling stand.

7. LED self-ballasted lamp according to claim 6, it is characterized in that, bend in the middle part of described heat dispersion substrate to form the first kink and the second kink, form " V " character form structure between described first kink and described second kink, and described first kink and described second kink are equipped with LED point light source.

8. LED self-ballasted lamp according to claim 1, it is characterized in that, described rear lamp housing comprises main casing and is connected to the connecting portion of described main casing one end, described main casing is horn-like structure, comprise the little head end that stub end and diameter are less than described stub end, described connecting portion is arranged at described little head end, and described connecting portion is connected with described lamp holder.

9. LED self-ballasted lamp according to claim 8, is characterized in that, the sidewall of described main casing offers multiple second louvre, multiple described second louvres array distribution on described main casing.

10. LED self-ballasted lamp according to claim 8, is characterized in that, the outer surface of described lamp holder offers external screw thread.