A multi-lobed energy-saving light bulb

Abstract

This utility model discloses a multi-lobed energy-saving light bulb, including a lamp holder, side lamp groups, and a lower lamp group. A diffuser and a positioning wing plate are fixedly installed on the bottom surface of the lamp holder. The diffuser has an air inlet at the bottom and a vent near the top on the outer periphery. An axial flow channel and an outer flow channel are formed on the inner side of the diffuser. The side lamp group and the lower lamp group are fixed to the inner side of the diffuser by the positioning wing plate, and an oblique gap is provided between the two lamp groups to connect the airflow channel. The lower lamp group includes a second PCB lamp board, a heat sink, and a second lens lobe, while the side lamp group includes a first PCB lamp board and a first lens lobe. This utility model achieves a chimney effect and a unidirectional airflow acceleration effect through the combination of the air inlet, vent, and Tesla valve flow channel, forming a natural convection heat dissipation path for spontaneous cold air intake and hot air exhaust, significantly improving the bulb's heat dissipation efficiency, reducing temperature rise, and extending the lifespan of the lamp beads.

Description

Technical Field

[0001] This utility model relates to the field of light bulb technology, specifically to a multi-lobed energy-saving light bulb. Background Technology

[0002] Existing energy-saving light bulbs and LED lighting fixtures continuously generate heat during use, especially high-power, multi-LED structures. If this heat cannot be dissipated in time, the junction temperature of the LEDs will rise, affecting luminous efficiency and lifespan. Therefore, traditional heat dissipation methods mainly include the following:

[0003] Most energy-saving light bulbs use enclosed or semi-enclosed lampshades, relying on natural convection between the bulb surface and the air for heat dissipation. For example, common bulb lamps or frosted diffuser bulbs largely depend on the surface area of ​​the lampshade for heat dissipation. However, due to poor internal airflow circulation, heat is concentrated near the LED, resulting in limited heat dissipation efficiency and making it difficult to meet the needs of long-term operation or high-brightness lighting.

[0004] Some high-power LED lamps incorporate aluminum alloy heat sinks or built-in miniature fans around the lamp holder to improve heat conduction and convection cooling efficiency. While this method can solve the heat dissipation problem to some extent, it results in a complex structure, increased size, and difficulty in application to standard household screw-in energy-saving light bulbs. Active cooling components also increase power consumption and noise, and reduce overall reliability.

[0005] Currently, some light bulbs have attempted to incorporate air intake vents at the bottom of the lampshade or ventilation holes on the side walls, utilizing temperature differences to drive airflow and create a limited chimney effect for heat dissipation. However, due to the lack of internal airflow guidance design, hot air tends to stagnate inside the lampshade, and the efficiency of introducing cool air from the bottom is low, resulting in unsatisfactory heat dissipation.

[0006] In view of this, we will study and improve upon the existing problems to provide a multi-lobed energy-saving light bulb, aiming to solve the current problems and improve its practical value through this technology. Utility Model Content

[0007] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0008] Therefore, the technical solution adopted by this utility model is as follows: a multi-lobed energy-saving light bulb, including a lamp holder, side lamp groups, and a lower lamp group. The interior of the lamp body forms an axial flow channel and an external flow channel through a diffuser. An air inlet is provided at the bottom and a vent is provided at the top, utilizing natural convection to form an efficient heat dissipation airflow path. Both the side lamp groups and the lower lamp group adopt a multi-lobed lens design, combined with a heat dissipation base structure, to achieve synergistic optimization of optical diffusion and heat dissipation.

[0009] This utility model provides a multi-lobed energy-saving light bulb, comprising: a lamp holder with a diffuser and a positioning wing plate fixedly mounted on its bottom surface; a side lamp assembly and a lower lamp assembly, respectively fixed on both sides of the positioning wing plate and located inside the diffuser; an air inlet is provided at the bottom of the diffuser, and a vent is provided on the outer periphery near the top to form an airflow passage; the lower lamp assembly includes a second PCB lamp board, a heat sink fixed to the top surface, and several second lens lobes; the side lamp assembly includes a first PCB lamp board and several first lens lobes fixed to its surface; an axial flow channel and an outer flow channel are provided on the inner side of the diffuser, respectively located at the axis and outer periphery of the lamp assembly.

[0010] Technical effect: By combining the lamp holder, diffuser and multi-lobed lamp group, an internal airflow channel is formed, providing a basic structure for subsequent natural heat dissipation, and realizing the synergy of multi-angle lighting and overall heat dissipation.

[0011] In a preferred example, the bottom of both the diffuser and the outer channel are connected to the air inlet, and the top of both are connected to the vent. An oblique gap is provided between the side light assembly and the lower light assembly, so that the axial channel and the outer channel can be connected in the middle section.

[0012] Technical effect: This design forms an airflow circulation path that connects the top and bottom. When the bulb generates heat during operation, the cool air at the bottom can enter through the air inlet and rise along the dual channels, and be discharged from the top vent, forming a stable chimney effect and achieving self-heating of the lamp body.

[0013] In a preferred example, the first lens flap has an isosceles obtuse triangular cross-section; the heat sink and the second lens flap have a teardrop shape. The air inlet and the outer flow channel are connected at the bottom, middle, and top to form a Tesla valve flow channel structure.

[0014] Technical effect: The Tesla valve channel has low resistance and high flow rate when the airflow is rising in one direction, while the resistance increases when the airflow is flowing in the opposite direction, which effectively avoids airflow backflow, increases the airflow speed for heat dissipation and enhances the convective heat dissipation capacity.

[0015] In a preferred example, both the first and second lens lobes are made of transparent acrylic material for refracting and diffusing light, and there are several of them, all of which are fixedly connected to the positioning wing plate.

[0016] Technical benefits: The transparent acrylic lenses ensure good light transmittance and achieve multi-angle softened lighting. At the same time, the number and distribution of the lenses, combined with the multi-lobed structure, can balance aesthetics and heat dissipation airflow channel arrangement.

[0017] In a preferred example, the first PCB lamp board is ring-shaped, with surface lamps arranged circumferentially around its outer perimeter; the second PCB lamp board is annular, with bottom lamps evenly distributed circumferentially.

[0018] Technical effect: The combination of ring-shaped and circular light panels achieves all-round lighting, and the lens refraction effect improves the uniformity of light coverage, while reserving space for airflow channels and heat sink layout.

[0019] In a preferred example, the heat sink is formed by a combination of several fins arranged in a circumferential direction, with gaps between the fins to improve the heat dissipation efficiency of the second PCB lamp board.

[0020] Technical benefits: The gap between the fins increases the air contact area and introduces turbulence, accelerating the discharge of hot air, effectively reducing the operating temperature of LED beads and extending their lifespan.

[0021] In a preferred example, the diffuser is an opaque shell-like structure used to soften the light emitted by the side and bottom light groups, reducing glare and light spots, and improving viewing comfort.

[0022] Technical benefits: The diffuser ensures optical comfort and forms a coordinated structure with the internal airflow channels, achieving dual optimization of lighting and heat dissipation.

[0023] The beneficial effects achieved by this utility model are as follows:

[0024] 1. In this utility model, an axial flow channel and an outer flow channel are formed inside the diffuser, and are connected to the top vent through the bottom air inlet. When the side lamp group and the bottom lamp group are working and heating up, a chimney effect is automatically generated, which causes the hot air to rise spontaneously and be discharged from the top. At the same time, the cold air at the bottom is passively drawn in, realizing the natural convection heat dissipation of the bulb. No additional fan or heat dissipation circuit is required, which effectively reduces the working temperature of the lamp beads and extends their service life.

[0025] 2. In this utility model, the air inlet, axial flow channel, outer flow channel and vent are combined to form a Tesla valve flow channel, which guides and accelerates the cold air at the bottom while the hot air rises, realizing rapid air circulation and enhancing the heat dissipation effect, so that a stable self-circulating thermal management system is formed inside the bulb, improving the overall heat dissipation efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0027] Figure 2 This is a cross-sectional structural diagram of one embodiment of the present invention;

[0028] Figure 3 This is an exploded view of the side light assembly and lower light assembly according to an embodiment of the present invention.

[0029] Figure label:

[0030] 100. Lamp holder; 110. Softbox; 120. Positioning wing plate; 111. Air inlet; 112. Vent hole; 113. Axial flow channel; 114. Outer flow channel;

[0031] 200, Side lamp assembly; 210, First PCB lamp board; 220, First lens flap;

[0032] 300, Lower lamp assembly; 310, Second PCB lamp board; 320, Second lens flap; 311, Heat sink. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0034] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0035] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a multi-lobed energy-saving light bulb.

[0036] Combination Figures 1-3 As shown, this utility model provides a multi-lobed energy-saving light bulb, including a lamp holder 100, side lamp groups 200, and a lower lamp group 300. A diffuser 110 and a positioning wing plate 120 are fixedly installed on the bottom surface of the lamp holder 100. The diffuser 110 is a non-transparent shell structure used to soften the light source of the side lamp groups 200 and the lower lamp group 300, avoiding direct glare. The positioning wing plate 120 is fixed to the bottom surface of the diffuser 110, providing a stable support position for the side lamp groups 200 and the lower lamp group 300. The side lamp groups 200 and the lower lamp group 300 are fixed to the inner side of the diffuser 110 by being fixed to both sides of the positioning wing plate 120, forming a multi-lobed light structure arranged in a ring. An air inlet 111 is provided at the bottom of the diffuser 110, and a vent 112 is provided on the outer periphery of the diffuser 110 near the top, so that cold air is drawn in from the bottom and hot air is expelled from the top when the bulb is working, thus creating a chimney effect.

[0037] The lower lamp assembly 300 includes: a second PCB lamp board 310, which has a ring structure and a number of LED beads evenly distributed on its bottom surface; a second lens lobes 320, which are arranged in parallel above the second PCB lamp board 310 for refracting and diffusing light; and a heat sink 311, which is fixed to the top surface of the second PCB lamp board 310 and is composed of a number of fins distributed in a circumferential direction with gaps between the fins to improve the heat dissipation effect of the second PCB lamp board 310.

[0038] The side light assembly 200 includes: a first PCB light board 210, which has a ring-shaped structure and LED beads arranged circumferentially on the outer periphery; and a first lens lobes 220, several of which are fixed to the surface of the first PCB light board 210 for refracting and diffusing light.

[0039] The diffuser 110 has two airflow channels on its inner side: an axial flow channel 113 located at the center of the side lamp group 200 and the lower lamp group 300, and an outer flow channel 114 located at the outer periphery of the side lamp group 200 and the lower lamp group 300. The two work together to form a natural airflow circulation path inside the bulb.

[0040] In this embodiment, such as Figure 2 As shown, the bottom ends of both the diffuser 110 and the outer channel 114 are connected to the air inlet 111, and the top ends are connected to the vent 112.

[0041] An oblique gap is formed between the side light assembly 200 and the lower light assembly 300 to enable airflow communication between the axial flow channel 113 and the middle section of the outer flow channel 114.

[0042] Specifically, the air inlet 111 and the outer flow channel 114 form a Tesla valve flow channel structure through a combination of bottom connection, middle section connection and top connection, which can reduce resistance and accelerate flow when the airflow rises, while damping the possible reverse airflow and realizing unidirectional accelerated flow.

[0043] In this embodiment, the first lens lobe 220 has an isosceles obtuse triangle shape in cross section, which is used to refract and diffuse the light emitted by the first PCB lamp board 210 at multiple angles; the second lens lobe 320 and the heat sink 311 have teardrop-shaped cross sections, which helps to reduce airflow resistance and improve heat dissipation efficiency.

[0044] Both the first lens lobe 220 and the second lens lobe 320 are made of transparent acrylic material to ensure good light transmittance and diffusion performance. There are several of them, and they are all fixedly connected to the positioning wing plate 120 through structural components.

[0045] The first PCB lamp board 210 has a ring-shaped structure with LED beads arranged circumferentially on its surface; the second PCB lamp board 310 is ring-shaped with LED beads evenly distributed circumferentially on its bottom surface, which, together with the lens flap, achieves a ring-shaped multi-angle lighting effect.

[0046] The heat sink 311 is formed by combining several fins in a circumferential direction, and there are gaps between adjacent fins to increase the air contact area and form turbulence, thereby improving the heat convection dissipation efficiency of the second PCB lamp board 310 during operation.

[0047] Working principle and usage process of this utility model:

[0048] 1. Formation of the chimney effect: After the side lamp group 200 and the lower lamp group 300 are powered on, the heat generated is transferred to the interior of the diffuser 110, causing the air temperature in the axial flow channel 113 and the outer flow channel 114 to rise, the air density to decrease, and the air to float upward. A natural airflow channel is formed through the air inlet 111 at the bottom and the vent 112 at the top. The hot air spontaneously moves towards the top of the diffuser 110 and is discharged through the vent 112, thus creating a stable chimney effect inside the bulb.

[0049] 2. Airflow acceleration due to the Tesla valve flow channel effect: The air inlet 111, axial flow channel 113, outer flow channel 114, and vent 112 structurally form a connecting channel similar to a Tesla valve. When cold air enters the air inlet 111 at the bottom, it flows upward through the oblique gap and the connecting flow channel, and is accelerated under the guidance of the Tesla valve flow channel structure. It is then discharged at high speed through the vent 112 at the top, achieving passive pressurized flow.

[0050] 3. Self-circulating heat dissipation and usage process: Under the combined effect of the two airflow effects mentioned above, the diffuser 110 achieves a natural circulation path of "bottom cooling airflow introduction - top hot airflow exhaust". Users only need to screw the bulb into the lamp holder 100 and connect the power supply. While the bulb is lit, its own structure enables the spontaneous rise of hot air and the passive introduction of cool air, eliminating the need for an additional cooling fan or electronic control system. This achieves efficient self-heating and extends the lifespan of the LED chips and circuitry.

[0051] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multi-lobed energy-saving light bulb, characterized in that, include: The lamp holder (100), side lamp assembly (200), and lower lamp assembly (300) are provided. A diffuser (110) and a positioning wing plate (120) are fixedly installed on the bottom surface of the lamp holder (100). The side lamp assembly (200) and the lower lamp assembly (300) are fixed to the inner side of the diffuser (110) by fixing them to the two sides of the positioning wing plate (120). The bottom end of the diffuser (110) is provided with an air inlet (111), and the outer periphery of the diffuser (110) is provided with a vent hole (112) near the top of the diffuser (110). The lower lamp assembly (300) includes a second PCB lamp board. (310), second lens flap (320) and heat sink (311) fixed to the top surface of the second PCB lamp board (310), the side lamp group (200) includes a first PCB lamp board (210) and a first lens flap (220) fixed to the surface of the first PCB lamp board (210), the inner side of the diffuser (110) is provided with an axial flow channel (113) located at the axis of the side lamp group (200) and the lower lamp group (300), and the inner side of the diffuser (110) is provided with an outer flow channel (114) located at the outer periphery of the side lamp group (200) and the lower lamp group (300).

2. The multi-lobed energy-saving light bulb according to claim 1, characterized in that: The bottom ends of the diffuser (110) and the outer flow channel (114) are connected to the air inlet (111), and the top ends are connected to the vent (112); an oblique gap is provided between the side lamp group (200) and the lower lamp group (300) for connecting the middle section of the axial flow channel (113) and the outer flow channel (114).

3. The multi-lobed energy-saving light bulb according to claim 1, characterized in that: The first lens flap (220) has an isosceles obtuse triangle shape in cross section, and the heat sink (311) and the second lens flap (320) have teardrop-shaped cross sections; the air inlet (111) and the outer flow channel (114) form a Tesla valve flow channel by combining bottom connection, middle section connection and top connection.

4. The multi-lobed energy-saving light bulb according to claim 1, characterized in that: The first lens flap (220) and the second lens flap (320) are both transparent acrylic components used to refract and diffuse the light from the first PCB light board (210) and the second PCB light board (310). The number of the first lens flap (220) and the second lens flap (320) is several, and they are all fixedly connected to the surface of the positioning wing plate (120).

5. The multi-lobed energy-saving light bulb according to claim 1, characterized in that: The first PCB lamp board (210) is ring-shaped, and the surface lamp beads are arranged circumferentially on the outer periphery of the first PCB lamp board (210). The second PCB lamp board (310) is ring-shaped and the bottom lamp beads are evenly distributed in the circumferential direction.

6. The multi-lobed energy-saving light bulb according to claim 1, characterized in that: The heat sink (311) is formed by combining several fins in a circumferential direction, and there are gaps between each fin to improve the heat dissipation effect of the second PCB lamp board (310).

7. The multi-lobed energy-saving light bulb according to claim 1, characterized in that: The diffuser (110) is a non-transparent shell-shaped structure used to soften the light sources of the side lamp group (200) and the lower lamp group (300).

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