LED bulb

Abstract

The utility model belongs to the technical field of lighting equipment, and particularly relates to an LED bulb. The bulb shell is provided with an opening end, and the opening end is installed on the lamp holder; the lamp post component is provided with a first end and a second end, the first end is installed on the lamp holder, and the second end extends into the bulb shell; the LED structure is mounted on the lamp post component; the LED structure comprises a heat conduction substrate and a plurality of LED light sources, the heat conduction substrate is bent and deformed around the axis of the lamp pole component so as to surround the lamp pole component, the LED light sources are attached to the side, away from the lamp pole component, of the heat conduction substrate, and the LED light sources are electrically connected with the lamp holder. According to the technical scheme, the problem that the service life of the LED bulb is affected due to the fact that an LED lamp strip adopted by an existing LED bulb is poor in heat dissipation is solved.

Description

Technical Field

[0001] The present application belongs to the technical field of lighting equipment, and in particular, relates to an LED light bulb. Background Art

[0002] With the gradual popularization of the green living concept of energy saving and environmental protection, people are gradually using LED bulbs to replace traditional tungsten filament bulbs. LED bulbs have higher illumination and better lighting comfort.

[0003] In the LED bulb of the related art, the LED light bar is installed in the bulb shell through the lamp column component, that is, the LED light bar directly replaces the tungsten filament, thereby forming an LED bulb. When the LED bulb is powered on and emits light, the LED light bar generates heat. Due to the poor heat dissipation performance of the LED light bar, the LED light bar is easily damaged after emitting light for a period of time, and the service life of the LED light bar is short, that is, the service life of the LED bulb is short. Utility Model Content

[0004] The purpose of the present application is to provide an LED light bulb, aiming to solve the problem that the LED light strips used in current LED light bulbs have poor heat dissipation, which affects the service life of the LED light bulbs.

[0005] To achieve the above purpose, the technical solution adopted in this application is: an LED light bulb, comprising:

[0006] Lamp holder;

[0007] The bulb shell is formed with an open end, and the open end is mounted on the lamp cap;

[0008] The lamp post component has a first end and a second end, the first end is mounted on the lamp holder, and the second end extends into the bulb shell;

[0009] LED structure, mounted on the lamp post component;

[0010] The LED structure includes a heat-conducting substrate and multiple LED light sources. The heat-conducting substrate is bent and deformed around the axis of the lamp post component to surround the lamp post component. The LED light sources are mounted on the side of the heat-conducting substrate away from the lamp post component. The multiple LED light sources are electrically connected to the lamp holder.

[0011] In some embodiments of the present application, a plurality of LED light sources are evenly distributed on the thermally conductive substrate.

[0012] In some embodiments of the present application, a connecting groove is provided in an area of ​​the heat-conducting substrate avoiding the LED light source, and the connecting groove is connected to a space formed by the heat-conducting substrate around the axis of the lamp post component.

[0013] In some embodiments of the present application, a plurality of connecting grooves are distributed in an array.

[0014] In some embodiments of the present application, the heat-conducting substrate is in the form of a cylindrical surface around the axis of the lamp post component; or, the heat-conducting substrate is in the form of a prismatic surface around the axis of the lamp post component.

[0015] In some embodiments of the present application, each connecting groove extends along the axial direction of the lamp post component. When the heat conductive substrate is cylindrical around the axis of the lamp post component, the area of ​​the heat conductive substrate between two adjacent connecting grooves protrudes away from the lamp post component.

[0016] In some embodiments of the present application, the LED structure further includes a fluorescent coating, and the fluorescent coating covers the LED light source.

[0017] In some embodiments of the present application, a first bracket is provided at the first end of the lamp pole component, a second bracket is provided at the second end of the lamp pole component, a first connecting ear correspondingly connected to the first bracket is provided on one side of the thermal conductive substrate, and a second connecting ear correspondingly connected to the second bracket is provided on the other side of the thermal conductive substrate.

[0018] In some embodiments of the present application, a mounting protrusion is provided at one end of the bulb shell opposite to the opening end, the mounting protrusion is extended toward the opening end, and the second bracket is connected to the mounting protrusion.

[0019] In some embodiments of the present application, the bulb is ellipsoidal or cylindrical.

[0020] This application has at least the following beneficial effects:

[0021] In the LED bulb provided in the present application, the LED structure adopted includes a heat-conducting substrate and a plurality of LED light sources, and the LED light sources are mounted on the heat-conducting substrate. In this way, when the LED bulb is used for luminous illumination, the heat generated by the LED light source can be quickly transferred to the heat-conducting substrate, thereby effectively realizing passive heat dissipation of the LED light source, and reducing the probability of damage caused by the continuous increase in temperature of the LED light source. Compared with the service life of traditional LED light strips, the service life of the LED light source of the LED bulb is longer, that is, the service life of the LED bulb is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional appearance of an LED light bulb according to an embodiment of the present application;

[0024] Figure 2 for Figure 1 An exploded schematic diagram of an LED light bulb is shown;

[0025] Figure 3 for Figure 1 A schematic cross-sectional view of a bulb shell in an LED light bulb is shown;

[0026] Figure 4 A schematic diagram of the three-dimensional appearance of another LED bulb according to an embodiment of the present application;

[0027] Figure 5 for Figure 4 An exploded schematic diagram of an LED light bulb is shown;

[0028] Figure 6 This is a schematic structural diagram of an LED structure used in an LED bulb of an embodiment of the present application, wherein the thermally conductive substrate is not provided with a first connecting ear and a second connecting ear;

[0029] Figure 7 for Figure 6 A schematic cross-sectional view of an LED structure is shown;

[0030] Figure 8 for Figure 7 The enlarged schematic diagram of point A in the middle;

[0031] Fig. 9 Schematic diagram of another LED structure used in an LED bulb according to an embodiment of the present application, wherein the thermally conductive substrate is not provided with a first connecting ear and a second connecting ear;

[0032] Fig.10 Schematic diagram of another LED structure used in the LED bulb of the embodiment of the present application, wherein the thermal conductive substrate is not provided with the first connecting ear and the second connecting ear;

[0033] Fig.11 This is a schematic structural diagram of another LED structure used in the LED bulb of the embodiment of the present application after the fluorescent coating is removed, wherein the thermal conductive substrate is not provided with the first connecting ear and the second connecting ear.

[0034] Among them, the reference numerals in the figure are:

[0035] 10. Lamp holder;

[0036] 20. Bulb shell; 21. Open end; 22. Mounting protrusion;

[0037] 30. lamp post component; 31. first end; 32. second end; 33. first bracket; 34. second bracket; 331. first connecting ear; 341. second connecting ear;

[0038] 40. LED structure; 41. thermal conductive substrate; 411. connecting groove; 421. LED light source; 422. fluorescent coating; 431. first terminal; 432. second terminal. DETAILED DESCRIPTION

[0039] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0040] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the LED bulb provided by the embodiment of the present application includes a lamp holder 10, a bulb shell 20, a lamp post component 30 and an LED structure 40. The bulb shell 20 is formed with an open end 21, so that the LED structure 40 can be placed in the bulb shell 20. The open end 21 of the bulb shell 20 is installed on the lamp holder 10, so that the interior of the bulb shell 20 forms a closed space. The lamp post component 30 has a first end 31 and a second end 32. After the LED structure 40 is installed on the lamp post component 30, the second end 32 of the lamp post component 30 extends from the opening of the open end 21 into the bulb shell 20, and the LED structure 40 is completely entered into the bulb shell 20. Then, the first end 31 of the lamp post component 30 is installed on the lamp holder 10, so that the lamp post component 30 can stably support the LED structure 40, and the interior of the bulb shell 20 forms a closed space. Among them, the LED structure 40 includes a heat-conducting substrate 41 and a plurality of LED light sources 421, and the plurality of LED light sources 421 are mounted on the heat-conducting substrate 41. When the LED structure 40 is mounted on the lamp post component 30, the heat conductive substrate 41 is bent and deformed around the axis of the lamp post component 30 to surround the lamp post component 30, and the LED light source 421 is located on the side of the heat conductive substrate 41 away from the lamp post component 30. The plurality of LED light sources 421 are all electrically connected to the lamp holder 10. When the lamp holder 10 is electrically connected to the household circuit and powered on, the plurality of LED light sources 421 are powered on to emit light, and the light is transmitted from the bulb shell 20 to achieve lighting.

[0044] In the LED bulb provided in the present application, the LED structure 40 adopted by the LED bulb includes a heat-conducting substrate 41 and a plurality of LED light sources 421, and the LED light sources 421 are mounted on the heat-conducting substrate 41. In this way, when the LED bulb is used for luminous illumination, the heat generated by the LED light source 421 can be quickly transferred to the heat-conducting substrate 41, and the heat-conducting substrate 41 can effectively perform passive heat dissipation on the LED light source 421, so that the heat of the LED light source 421 is dispersed to the heat-conducting substrate 41, thereby reducing the temperature of the LED light source 421, so that the temperature of the LED light source 421 no longer continues to rise, and the probability of damage is reduced. Compared with the service life of traditional LED light strips, the service life of the LED light source 421 of the LED bulb is longer, that is, the service life of the LED bulb is increased.

[0045] like Figure 7 , Figure 8 and Fig.11 As shown, a plurality of LED light sources 421 are evenly distributed on the heat conductive substrate 41. When the heat conductive substrate 41 is bent and deformed around the axis of the lamp post component 30 to surround the lamp post component 30, the LED light sources 421 are also evenly distributed circumferentially around the axis of the lamp post component 30. In this way, when the LED bulb is lighting, the LED bulb evenly emits light along the circumferential direction, and the lighting effect is good.

[0046] like Fig.11 As shown, a plurality of LED light sources 421 are distributed in an array on the heat-conducting substrate 41, so there is a gap between two adjacent LED light sources 421. The first terminal 431 and the second terminal 432 are provided on the opposite side edges of the heat-conducting substrate 41, and the first terminal 431 and the second terminal 432 are used to be electrically connected to an external circuit (i.e., connected to a household circuit). When the LED light sources 421 are mounted on the heat-conducting substrate 41 in an array, the positive pin and the negative pin of the LED light source 421 are electrically connected to the first terminal 431 and the second terminal 432, respectively. In this way, when the first terminal 431 and the second terminal 432 are electrically connected to the external circuit, the LED light source 421 is turned on to form a loop, and the LED light source 421 is powered on to emit light.

[0047] In some embodiments of the present application, Figures 6 to 9 As shown, a connecting groove 411 is provided in the area of ​​the heat-conducting substrate 41 avoiding the LED light source 421, and the connecting groove 411 is connected with the space formed by the heat-conducting substrate 41 around the axis of the lamp post component 30. In this way, when the heat of the LED light source 421 is transferred to the heat-conducting substrate 41, when the heat is dissipated to the space formed by the heat-conducting substrate 41 around the axis of the lamp post component 30, the heat can be dissipated to the space between the LED structure 40 and the bulb 20 through the connecting groove 411, so that the temperature of the entire internal space of the bulb 20 is balanced, and the heat is prevented from accumulating in the space formed by the heat-conducting substrate 41 around the axis of the lamp post component 30 to form a local high temperature, which is beneficial to the passive heat dissipation effect of the LED light source 421.

[0048] In some embodiments of the present application, Fig.11 As shown, the heat-conducting substrate 41 of the LED structure 40 is a complete rectangular plate. That is, the heat-conducting substrate 41 has no connecting groove 411 .

[0049] Preferably, a connecting groove 411 is provided on the heat-conducting substrate 41 of the embodiment of the present application, and the connecting groove 411 extends along the axial direction of the lamp column component 30, that is, the connecting groove 411 is a long strip hole groove. Alternatively, in other LED structures 40, the connecting groove 411 is a round hole groove. The shape of the connecting groove 411 is not limited here. Among them, the present application preferably adopts a connecting groove 411 with a long strip hole groove.

[0050] In the embodiment of the present application, the plurality of LED light sources 421 are arrayed on the thermally conductive substrate 41. Figure 6 , Figure 7 and Fig. 9 As shown, a plurality of connecting grooves 411 are distributed in an array on the heat-conducting substrate 41. Figure 2 , Figure 5 and Fig. 9 As shown, the heat-conducting substrate 41 is cylindrical around the axis of the lamp post component 30; or Figure 6 and Figure 7 As shown, the heat-conducting substrate 41 is a prismatic surface around the axis of the lamp post component 30. The array distribution of the connecting grooves 411 includes but is not limited to a matrix rectangular array distributed on the heat-conducting substrate 41. When the heat-conducting substrate 41 is bent and deformed around the axis of the lamp post component 30 to surround the lamp post component 30, multiple connecting grooves 411 are distributed in columns along the axis direction of the lamp post component 30, and multiple connecting grooves 411 are distributed in rows around the circumference of the axis of the lamp post component 30. Alternatively, when the heat-conducting substrate 41 is bent and deformed around the axis of the lamp post component 30 to surround the lamp post component 30, the extending direction of the connecting grooves 411 distributed in the array intersects with the axis direction of the lamp post component 30. Alternatively, when the thermally conductive substrate 41 is bent and deformed around the axis of the lamp post component 30 to surround the lamp post component 30, the connecting groove 411 of the long strip hole extends along the axial direction of the lamp post component 30, and the length of the connecting groove 411 is only slightly smaller than the width of the thermally conductive substrate 41 in the axial direction of the lamp post component 30 (that is, the two ends of the connecting groove 411 do not exceed the side of the thermally conductive substrate 41), and multiple connecting grooves 411 are distributed circumferentially around the axis of the lamp post component 30.

[0051] like Fig.10 As shown, in an LED structure 40, each connecting groove 411 extends along the axial direction of the lamp column component 30, and the length of the connecting groove 411 is only slightly smaller than the width of the heat-conducting substrate 41 in the axial direction of the lamp column component 30 (that is, the two ends of the connecting groove 411 do not exceed the side of the heat-conducting substrate 41). In addition, when the heat-conducting substrate 41 is cylindrical around the axis of the lamp column component 30, the area of ​​the heat-conducting substrate 41 between two adjacent connecting grooves 411 is convexly arranged in the direction away from the lamp column component 30. In this way, an ellipsoidal LED structure 40 is formed, as shown in FIG. Fig.10 shown.

[0052] In the embodiments of the present application, Figure 2 , Figures 5 to 10 As shown, the LED structure 40 further includes a fluorescent coating 422, which covers the LED light source 421. When the LED light source 421 emits light, the light is transmitted through the fluorescent coating 422, thereby converting the wavelength of the light, which helps to improve the lighting effect. In addition, the fluorescent coating 422 avoids each connecting groove 411.

[0053] In order to conveniently, quickly and stably install the LED structure 40 on the lamp column component 30, Figure 2 and Figure 5As shown, the first end 31 of the lamp post component 30 is provided with a first bracket 33, and the second end 32 of the lamp post component 30 is provided with a second bracket 34. Accordingly, one side of the heat conductive substrate 41 is provided with a first connecting ear 331 correspondingly connected to the first bracket 33, and the other side of the heat conductive substrate 41 is provided with a second connecting ear 341 correspondingly connected to the second bracket 34. In this way, the LED structure 40 can be quickly and stably installed on the lamp post component 30, thereby improving the assembly efficiency.

[0054] In the embodiment of the present application, the lamp post component 30 is made of metal material, so that the lamp post component 30 has strong mechanical strength, so that the lamp post component 30 can stably support the LED structure 40. The first end side of the heat conductive substrate 41 is welded to the first connecting ear 331, and the second end side of the heat conductive substrate 41 is welded to the second connecting ear 341.

[0055] In some other embodiments of the present application, the first end side of the thermal conductive substrate 41 and the first connecting ear 331 are locked and connected by screws, and the second end side of the thermal conductive substrate 41 and the second connecting ear 341 are also locked and connected by screws.

[0056] In the embodiment of the present application, the lamp post component 30 made of metal can be used as a wire electrically connected to the first terminal 431 or the second terminal 432 of the LED structure 40. For example, when the first terminal 431 is far away from the lamp holder 10, the lamp post component 30 acts as a wire to electrically connect the first terminal 431 to the lamp holder 10, while the second terminal 432 is electrically connected to the lamp holder 10 through other leads. In this way, the number of wires in the bulb 20 is reduced, and because the lamp post component 30 is surrounded by the LED light source 421, the lamp post component 30 will not affect the illumination light path of the LED light source 421 to form a lighting spot, thereby ensuring the lighting effect.

[0057] When the first end 31 of the lamp post component 30 is mounted on the lamp holder 10 and the second end 32 of the lamp post component 30 extends from the opening of the opening end 21 into the bulb shell 20, in order to ensure that the lamp post component 30 can be stably located inside the bulb shell 20, Figures 1 to 3 As shown, a mounting protrusion 22 is provided at one end of the bulb shell 20 opposite to the open end 21, the mounting protrusion 22 is extended toward the open end 21, and the second bracket 34 is connected to the mounting protrusion 22. In this way, the first end 31 and the second end 32 of the lamp post component 30 are supported by the lamp holder 10 and the mounting protrusion 22 of the bulb shell 20, respectively, so that the lamp post component 30 is stably placed in the bulb shell 20, and the LED structure 40 mounted on the lamp post component 30 is kept in a stable position in the bulb shell 20.

[0058] Preferably, the bulb shell 20 of the LED bulb provided in the embodiment of the present application is ellipsoidal (eg Figures 1 to 3 as shown) or cylindrical (as Figure 4 and Figure 5 shown).

[0059] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An LED light bulb, comprising: Lamp holder (10); A bulb shell (20) is formed with an open end (21), and the open end (21) is mounted on the lamp holder (10); A lamp post component (30) having a first end (31) and a second end (32), wherein the first end (31) is mounted on the lamp holder (10), and the second end (32) extends into the bulb shell (20); An LED structure (40) mounted on the lamp post component (30); It is characterized in that The LED structure (40) comprises a heat-conducting substrate (41) and a plurality of LED light sources (421); the heat-conducting substrate (41) is bent and deformed around the axis of the lamp post component (30) to surround the lamp post component (30); the LED light sources (421) are mounted on a side of the heat-conducting substrate (41) facing away from the lamp post component (30); and the plurality of LED light sources (421) are all electrically connected to the lamp holder (10).

2. The LED bulb according to claim 1, characterized in that: The plurality of LED light sources (421) are evenly distributed on the heat-conducting substrate (41).

3. The LED bulb according to claim 2, characterized in that: A connecting groove (411) is provided in an area of ​​the heat-conducting substrate (41) that avoids the LED light source (421), and the connecting groove (411) is connected to a space formed by the heat-conducting substrate (41) around the axis of the lamp post component (30).

4. The LED bulb according to claim 3, characterized in that: The plurality of connecting grooves (411) are distributed in an array.

5. The LED bulb according to claim 4, characterized in that: The heat-conducting substrate (41) is in the form of a cylindrical surface around the axis of the lamp post component (30); Alternatively, the heat-conducting substrate (41) presents a prismatic surface around the axis of the lamp post component (30).

6. The LED bulb according to claim 4, characterized in that: Each of the connecting grooves (411) extends along the axial direction of the lamp post component (30), and when the heat-conducting substrate (41) is cylindrical around the axis of the lamp post component (30), the area of ​​the heat-conducting substrate (41) between two adjacent connecting grooves (411) is protruding in a direction away from the lamp post component (30).

7. The LED bulb according to any one of claims 1 to 6, characterized in that: The LED structure (40) further comprises a fluorescent coating (422), wherein the fluorescent coating (422) covers the LED light source (421).

8. The LED bulb according to claim 7, characterized in that: The first end (31) of the lamp post component (30) is provided with a first bracket (33), the second end (32) of the lamp post component (30) is provided with a second bracket (34), one side of the heat-conducting substrate (41) is provided with a first connecting ear (331) correspondingly connected to the first bracket (33), and the other end of the heat-conducting substrate (41) is provided with a second connecting ear (341) correspondingly connected to the second bracket (34).

9. The LED bulb according to claim 8, characterized in that: An end of the bulb shell (20) opposite to the opening end (21) is provided with a mounting protrusion (22), the mounting protrusion (22) extending toward the opening end (21), and the second bracket (34) is connected to the mounting protrusion (22).

10. The LED bulb according to claim 9, characterized in that: The bulb shell (20) is in an ellipsoidal or cylindrical shape.

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