CN218914857U

CN218914857U - LED bulb

Info

Publication number: CN218914857U
Application number: CN202223078519.0U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Danyang Huayu Electronic Technology Co ltd
Current assignee: Danyang Huayu Electronic Technology Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-04-25
Anticipated expiration: 2032-11-21

Abstract

The utility model discloses an LED bulb, which comprises a closed bulb shell, a plurality of luminous parts and a fan, wherein the luminous parts are all positioned in the bulb shell, the fan is used for radiating the luminous parts, the bulb shell is of a fusiform structure as a whole, each luminous part extends along the axial direction of the fusiform structure, each luminous part surrounds and forms a tubular structure coaxial with the fusiform structure, the fan is coaxially arranged at one end of the tubular structure, wind current generated by the fan passes through the inner side of the tubular structure along the axial direction and then is concentrated at one end of the fusiform structure, heat of the wind current and the inner wall of the fusiform structure exchanges heat in the air reflux process, and then the heat is reflux to the other end of the fusiform structure, and the wind current enters the tubular structure again through the action of the fan to form the circulation flow of air and exchanges heat with the inner wall of the fusiform, so that the heat at the luminous parts can be dispersed rapidly, the heat convection of a light source in the bulb is increased, and the temperature is reduced in an active convection mode.

Description

LED bulb

Technical Field

The utility model relates to the technical field of lamps, in particular to an LED bulb.

Background

When the LED glass bulb in the prior art works, the air temperature at the LED luminous part is too high, the air is gathered around the LED luminous part, only the heat is passively dissipated, and the service life of the LED lamp is easy to be reduced due to the continuous high temperature; patent document CN102095107a discloses a high heat dissipation LED bulb assembly, which comprises a heat dissipation stem, an LED light source, a lampshade and a driver, wherein the LED bulb assembly is provided with a radiator, the radiator comprises a middle radiator and a lower radiator, the heat dissipation stem is provided with two or more independent radiators, and the heat dissipation stem form a heat dissipation main body of the LED bulb assembly. The LED bulb assembly fully utilizes the lampshade space of the LED bulb and the lamp fittings in the ceiling lamp in which the LED bulb is installed and used, expands the heat dissipation area of the LED bulb to a plurality of times of that of a common LED bulb, so that the LED bulb has better heat dissipation performance and lower driving space temperature, and the heat dissipation is passive heat dissipation and has poorer heat dissipation capability. The patent document CN103148384B discloses an LED bulb, wherein an LED substrate is connected with an inner wall radiator and a bottom radiator, heat generated by a light source is transferred to the radiator, the heat is transferred to a radiating fin on the radiator and then is subjected to heat exchange with cold air around the radiating fin, the cold air is supplemented through openings below the radiator and a lampshade, the cold air is generated by thermal expansion, ascending air flow is discharged from a radiating hole of a lamp holder, and meanwhile, the arrangement of a micro fan further accelerates the circulation of air, so that the light source can quickly radiate, but the inside of the bulb is inevitably polluted by external environment easily due to the arrangement of the radiating hole, and the complexity of a radiating device is inevitably caused by the arrangement of the radiating fin.

Disclosure of Invention

The utility model aims to provide an LED bulb so as to solve the problems in the prior art, and the heat dissipation effect on a light emitting part is improved by utilizing the circulating flow of air and the heat exchange with a bulb shell, and the temperature difference of a light source is reduced, so that the service life of the LED bulb is prolonged.

In order to achieve the above object, the present utility model provides the following solutions: the utility model provides an LED bulb which comprises a closed bulb shell, a plurality of luminous parts and a fan, wherein the luminous parts are all positioned in the bulb shell, the fan is used for radiating heat of the luminous parts, the bulb shell is of a fusiform structure as a whole, the luminous parts axially extend along the fusiform structure, the luminous parts encircle to form a tubular structure coaxial with the fusiform structure, the fan is coaxially arranged at one end of the tubular structure, and wind flow generated by the fan penetrates through the inner side of the tubular structure along the axial direction, is concentrated at one end of the fusiform structure and flows back along the inner wall of the fusiform structure.

Preferably, a gap is provided between two adjacent light emitting parts for air outside the tubular structure to circulate to the inside thereof.

Preferably, the fan is electrically connected with a fan driving board for converting electricity to be used for the fan, and the fan is electrically connected with the driver of the light emitting part through the fan driving board.

Preferably, the fan driving plate is disposed at a side of the fan away from the cylindrical structure along an axial direction.

Preferably, a light emitting part bracket is arranged in the fusiform structure, each light emitting part is arranged on the light emitting part bracket in a surrounding mode, the light emitting part bracket extends along the axial direction of the bulb shell, two ends of the light emitting part bracket are respectively abutted to two ends of the bulb shell, and the fan driving plate are both fixed on the light emitting part bracket.

Preferably, the end of the bulb shell, which is not connected with the screw lamp cap, is provided with a groove extending outwards, the groove and the bulb shell are integrally formed, the end part of the light-emitting part bracket is of an annular structure, and the annular structure is clamped in the groove along the circumferential direction.

Preferably, the annular structure is fixed with a first reinforcing support bar along the circumferential direction thereof, and the first reinforcing support bar is sleeved in the groove.

Preferably, the fan and the fan driving plate are sequentially fixed between the cylindrical structure and the first reinforcing support bar in a direction away from the cylindrical structure.

Compared with the prior art, the utility model has the following technical effects:

firstly, the bulb shell is wholly in a fusiform structure, each luminous part extends along the axial direction of the fusiform structure, and each luminous part surrounds and forms a tubular structure coaxial with the fusiform structure, the fan is coaxially arranged at one end of the tubular structure, wind flow generated by the fan axially passes through the inner side of the tubular structure and then is concentrated at one end of the fusiform structure, and flows back along the inner wall of the fusiform structure, meanwhile, heat of the air and the inner wall of the fusiform structure exchange heat in the process of air backflow, and then flows back to the other end of the fusiform structure, and enters the tubular structure again through the action of the fan, so that the circulating flow of air and the alternate heat exchange with the inner wall of the fusiform structure are formed, the heat of the luminous part can be dispersed rapidly, the heat convection of a light source in the bulb is increased, the temperature is reduced in an active convection mode, the temperature difference of the luminous part in the bulb is reduced, the service life of the bulb is prolonged, and further, the product power can be increased by 3 times under the premise of guaranteeing that the temperature is uniform and the heat dissipation is fast.

And secondly, a gap for air outside the tubular structure to circulate to the inner side of the tubular structure is formed between two adjacent light-emitting parts, and when the fan drives the air to rapidly pass through the tubular structure, part of the air can be sucked to the inner side of the tubular structure from the position of the inner wall of the fusiform structure, so that the heat dissipation effect of the light-emitting parts is improved.

Third, the fan drive plate is along the axial setting in the one side that the tubular structure was kept away from to the fan, at the in-process that the fan blows the air flow for the air can directly get into the tubular structure inboard, has avoided receiving the barrier effect of fan drive plate, has guaranteed the validity of air flow, and then has improved the radiating effect to luminous portion.

Fourth, the one end that the screw lamp holder was not connected to the bulb shell has the recess that extends towards the outside, recess and bulb shell integrated into one piece, avoids the recess to set up the astigmatic effect that influences the luminous portion, and the tip of luminous portion support is annular structure, and annular structure along circumference joint in the recess, through setting up the cooperation of recess and annular structure, has improved the firm effect with luminous portion support in the bulb shell, has guaranteed the stability of each structure in the bulb shell.

Fifth, annular structure department is fixed with first reinforcement support bar along its circumference, and first reinforcement support bar cup joints in the recess, through setting up first reinforcement support bar, can be further improve the area of contact of luminous portion support and recess, has further improved the fixed effect of luminous portion support in bulb shell.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

wherein, 1-screw lamp holder, 2-second consolidate the support strip, 3-luminous portion support, 4-tubular structure, 5-fan, 6-fan drive plate, 7-first consolidate the support strip.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

Referring to fig. 1, the utility model provides an LED bulb, which comprises a closed bulb shell, a plurality of light emitting parts and a fan 5, wherein the light emitting parts are all positioned in the bulb shell, the fan 5 is used for radiating heat of the light emitting parts, the bulb shell is made of transparent glass, or transparent acrylic plates and the like, the bulb shell is in a fusiform structure as a whole, each light emitting part extends along the axial direction of the fusiform structure, each light emitting part surrounds to form a tubular structure 4 coaxial with the fusiform structure, the cross section of the tubular structure 4 is not limited, the light emitting parts can be round, triangular or rectangular, and the like, the fan 5 is coaxially arranged at one end of the tubular structure 4, wind current generated by the fan 5 is concentrated at one end of the fusiform structure after passing through the inner side of the tubular structure 4 along the axial direction, and flow backward along the inner wall of fusiform structure, its heat exchanges heat with the inner wall of fusiform structure at the in-process that air is backward flow simultaneously, and then flow backward to the other end of fusiform structure again, reentrant tubular structure 4 through the effect of fan 5, form the circulation flow of air and with the alternative heat transfer of fusiform structure inner wall, can scatter the heat of luminous department fast, increase the interior light source heat convection of bulb, use initiative convection mode to reduce the temperature, and under the circulation flow of air, the light source difference in temperature of luminous department in the bulb reduces, make its life-span increase, further, under the prerequisite that guaranteeing the temperature is even, the heat dissipation is fast, product power can increase three times under the same bulb shell size.

The adjacent two light-emitting parts are provided with gaps for air outside the tubular structure 4 to circulate to the inner side of the tubular structure, and when the fan 5 drives the air to rapidly pass through the tubular structure 4, part of the air can be sucked to the inner side of the tubular structure 4 from the position of the inner wall of the fusiform structure, so that the heat dissipation effect of the light-emitting parts is improved.

Further, the fan 5 is electrically connected with a fan driving board 6 for converting the power to be used, the fan 5 is electrically connected with the driver 2 of the light emitting part through the fan driving board 6, and the power can be taken from the driver 2 of the light emitting part to the fan 5 for use, in the prior art, the power can not be taken directly from the driver 2 of the light emitting part to the fan 5 for use, and the utility model ensures the use effectiveness of the fan 5 by arranging the fan driving board 6 to complete the power conversion.

Preferably, the fan driving plate 6 is axially arranged on one side of the fan 5 far away from the tubular structure 4, and in the process that the fan 5 blows air to flow, the air can directly enter the inner side of the tubular structure 4, so that the blocking effect of the fan driving plate 6 is avoided, the effectiveness of air flow is ensured, and the heat dissipation effect of the luminous part is further improved.

As a preferred embodiment of the present utility model, a light emitting part bracket 3 is provided in the spindle structure, each light emitting part is circumferentially provided on the light emitting part bracket 3, the light emitting part bracket 3 extends along the axial direction of the bulb shell, both ends of the light emitting part bracket 3 are respectively abutted against both ends of the bulb shell, and the fan 5 and the fan driving plate 6 are both fixed on the light emitting part bracket 3, and since the light emitting part is already connected on the light emitting part bracket 3 in advance, each part is connected on the light emitting part bracket 3 again to form a bracket body so as to facilitate the common installation of each part carried by the light emitting part bracket in the bulb shell. The fan 5 is preferably matched with a fan 5 fixing frame, the fan 5 fixing frame is connected to the light-emitting part support 3, the stability of the fan 5 during operation is improved, during specific installation, the fan 5 is locked on the fan 5 fixing frame by using a fan 5 fixing screw, the fan 5 fixing frame is spot-welded on the light-emitting part support 3, positive and negative leads of the fan 5 are welded on the fan driving plate 6 by using tin, then the fan driving plate 6 is spot-welded on the light-emitting part support 3, all parts are connected to the light-emitting part support 3, the light-emitting part support 3 and a bulb shell are sealed and combined, so that a hair bulb shell is finished, and the hair bulb shell is glued on the spiral lamp cap 1 by using glue, so that a product is finished.

Further, the one end that screw lamp holder 1 is not connected to the bulb shell has the recess that extends towards the outside, recess and bulb shell integrated into one piece, avoids the recess to set up the astigmatic effect that influences the luminous portion, and the tip of luminous portion support 3 is annular structure, and annular structure along circumference joint in the recess, through setting up the cooperation of recess and annular structure, has improved the firm effect with luminous portion support 3 in the bulb shell, has guaranteed the stability of each structure in the bulb shell.

Further, the annular structure department is fixed with first reinforcement support bar 7 along its circumference, and first reinforcement support bar 7 and annular structure syntropy extend and cup joint in the recess, through setting up first reinforcement support bar 7, can be further improve the area of contact of luminous portion support 3 and recess, further improved the fixed effect of luminous portion support 3 in bulb shell. The second reinforcing support bar 2 is preferably connected to the side of the light emitting part support 3, which is far away from the groove, so as to further improve the firmness of the light emitting part support 3.

Preferably, the fan 5 and the fan driving plate 6 are sequentially fixed between the cylindrical structure 4 and the first reinforcing support bar along the direction away from the cylindrical structure 4, the cylindrical structure 4 is positioned at the middle position of the bulb shell, the luminous effect is improved, the component structures are reasonably arranged, the utilization rate of the space inside the bulb shell is improved, and in the air flowing process, the fan driving plate 6 is positioned in the air flow range, so that the heat dissipation of the luminous part can be completed, and the heat dissipation effect of other structures can be ensured.

The adaptation to the actual need is within the scope of the utility model.

It should be noted that it will be apparent to those skilled in the art that the present utility model is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.

Claims

1. The utility model provides a LED bulb, its characterized in that includes the lamp bulb shell of closed form, all is located a plurality of luminous portions and be used for right the lamp bulb shell is inside luminous portion radiating fan, the lamp bulb shell is whole to be the fusiform structure, each luminous portion is followed fusiform structure axial extension, and each luminous portion encircle form with the coaxial tubular structure of fusiform structure, the fan is coaxial to be set up in tubular structure's one end, the wind current that the fan produced is passed along the axial behind the inboard of tubular structure, concentrate in fusiform structure's one end, and along fusiform structure's inner wall is backward flow.

2. The LED bulb of claim 1, wherein adjacent two of the light emitting portions have a gap therebetween for air outside the tubular structure to circulate to the inside thereof.

3. The LED bulb according to claim 1 or 2, wherein a fan driving board for converting electricity to be available for the fan is electrically connected to a driver of the light emitting part through the fan driving board.

4. A LED light bulb as set forth in claim 3, wherein the fan drive plate is disposed axially on a side of the fan remote from the tubular structure.

5. The LED bulb of claim 4, wherein a light emitting portion support is disposed in the shuttle structure, each of the light emitting portions is disposed around the light emitting portion support, the light emitting portion support extends axially along the bulb envelope, two ends of the light emitting portion support abut against two ends of the bulb envelope, respectively, and the fan driving plate are both fixed to the light emitting portion support.

6. The LED bulb of claim 5, wherein the end of the bulb shell, to which the screw cap is not connected, has a groove extending outward, the groove is integrally formed with the bulb shell, the end of the light emitting part support has an annular structure, and the annular structure is clamped in the groove in the circumferential direction.

7. The LED bulb of claim 6, wherein a first reinforcing support bar is fixed at the annular structure along its circumference, the first reinforcing support bar being sleeved in the groove.

8. The LED light bulb of claim 7, wherein the fan and the fan drive plate are sequentially secured between the tubular structure and the first reinforcing support bar in a direction away from the tubular structure.