LED flame lamp

Abstract

The present invention relates to an LED flame lamp, comprising a lamp holder assembly, a driving assembly, a lighting assembly and a lampshade, wherein the lighting assembly comprises a double-sided circuit board and a columnar light guide, wherein a plurality of LED lamp beads arranged in a plurality of rows and columns are arranged on both the front and back sides of the double-sided circuit board, wherein the light guide has a space for placing the double-sided circuit board, and a plurality of light guide columns are arranged on the outer peripheral wall of the light guide, wherein each light guide column corresponds to an LED lamp bead, so as to solve the problems of high cost and complex manufacturing process of the flexible circuit board in the existing LED flame lamp.

Description

Technical Field

[0001] The invention relates to the field of lighting appliances, and in particular to an LED flame lamp. Background Art

[0002] With the development of technology, LED lights are being used in more and more occasions. The colorful lighting of LED street lights, garden lights and various floodlights can make squares, courtyards and other places more lively. Different tones can bring different rendering effects to the surrounding environment. The traditional flame lamp uses a quartz bulb to light up and blow up a red silk ribbon with a fan. When the light of the quartz bulb shines on it, the lamp looks like a burning flame. However, because of the presence of the fan, it will more or less bring a certain amount of noise, and will increase power consumption. It is limited to indoor use and is not conducive to environmental protection and energy saving.

[0003] For this reason, a new flame lamp has emerged, which is provided with multiple LED lamp boards, and transmits PWM (pulse width modulation) signals to lamp beads through a driving circuit module, so that the corresponding lamp beads flash, so that the LED lamp shows the effect of flames, and controls the color, swing and direction of the flames, so as to highly simulate the burning of open flames. The traditional flame lamp is to roll a double-sided flexible circuit board into a cylinder, and then simulate the flame jumping effect by turning on and off and flashing the LED, and adding a lampshade (such as the solution disclosed in CN106764915A). This flexible circuit board has high cost and complex manufacturing process, which is not conducive to mass production. Summary of the invention

[0004] The present invention aims to provide an LED flame lamp to solve the above-mentioned problems.

[0005] The specific plan is as follows:

[0006] An LED flame lamp comprises a lamp holder assembly, a driving assembly, a lighting assembly and a lampshade, wherein the lighting assembly comprises a double-sided circuit board and a columnar light guide, wherein a plurality of LED lamp beads arranged in multiple rows and columns are arranged on both the front and back sides of the double-sided circuit board, wherein the light guide has a space for placing the double-sided circuit board, and a plurality of light guide columns are arranged on the outer peripheral wall of the light guide, and each light guide column corresponds to an LED lamp bead.

[0007] Furthermore, the top surface of the light guide column is a light emitting surface, and the top surfaces of all the light guide columns corresponding to the LED lamp beads on the same side of the light guide member and the double-sided circuit board are tangent to the inner wall of the same cylinder.

[0008] Furthermore, the top surfaces of all the light guide columns on the light guide member are tangent to the inner wall of the same cylinder.

[0009] Furthermore, the top surface of the light guide column is a frosted surface.

[0010] Furthermore, the light guide column is in the shape of a truncated cone, and the diameter of the top of the light guide column is smaller than the diameter of the bottom thereof.

[0011] Furthermore, the light guide is formed by splicing a left light guide and a right light guide, and the left light guide and the right light guide form a space for placing a double-sided circuit board at their splicing point. The left light guide and the right light guide are both provided with a plurality of grooves for accommodating LED lamp beads on their splicing surfaces, and each groove corresponds to an LED lamp bead.

[0012] Furthermore, the left light guide member includes an arc-shaped first connecting portion and a flat first light guide portion, the right light guide member includes an arc-shaped second connecting portion and a flat second light guide portion, the light guide column on the left light guide member is arranged on the first light guide portion, the light guide column on the right light guide member is arranged on the second light guide portion, the first connecting portion and the second connecting portion are spliced ​​together into a cylindrical shape, and the first connecting portion and the second connecting portion are both provided with a fixing portion fixedly connected to the lamp head assembly.

[0013] Furthermore, the first connecting portion and the second connecting portion are spliced ​​together to form a cylindrical cavity, and a slot for fixing the drive assembly is provided in the cavity.

[0014] Furthermore, the left light guide is provided with a plurality of positioning posts on its splicing surface, and the double-sided circuit board is provided with positioning holes matching with the positioning posts.

[0015] Furthermore, the LED lamp beads on the front and back sides of the double-sided circuit board are arranged in a staggered manner.

[0016] Compared with the prior art, the LED flame lamp provided by the present invention has the following advantages: the LED flame lamp provided by the present invention realizes the three-dimensional light emission of the LED flame lamp by adopting a light guide column, and a conventional hard circuit board can be used as the circuit board of the LED flame lamp, which not only greatly reduces the cost, but also fundamentally solves the problem of difficult production process, and can realize mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An exploded view of an LED flame lamp is shown.

[0018] Figure 2 A cross-sectional view of a lighting assembly is shown.

[0019] Figure 3 An exploded view of a lighting assembly is shown.

[0020] Figure 4 A schematic diagram of the left light guide is shown.

[0021] Figure 5A schematic diagram of the right light guide is shown.

[0022] Figure 6 A light distribution curve diagram of an LED flame lamp is shown.

[0023] Figure 7 A light intensity curve graph of an LED flame lamp is shown. DETAILED DESCRIPTION

[0024] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0025] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0026] like Figure 1-Figure 3 As shown, the present invention provides an LED flame lamp, including a lamp holder assembly 1, a driving assembly 2, a lighting assembly 3 and a lampshade 4, wherein the lighting assembly 3 includes a double-sided circuit board 30 and a cylindrical light guide 32, and a plurality of LED lamp beads 300 arranged in multiple rows and columns are arranged on both sides of the double-sided circuit board 30 (wherein the double-sided circuit board can be a circuit board with circuits on both sides, or can be formed by two single-sided circuit boards laminated back to back, and in order to facilitate heat dissipation and assembly, a double-sided circuit board with circuits on both sides of the circuit board is preferred, and the double-sided circuit board can adopt a conventional hard circuit board, which can reduce the cost In this embodiment, the light guide 32 has a space for placing a double-sided circuit board 30, and the double-sided circuit board 30 is placed in the light guide 32. A plurality of light guide columns 320 are arranged on the outer peripheral wall of the light guide 32, and each light guide column 320 corresponds to an LED lamp bead 300, so that the light emitted by each LED lamp bead can enter the light guide column 320 from the light entrance surface of a light guide column 320 and be emitted from the light exit surface of the light guide column 320 to the environment. Since the light guide column 320 is located on the peripheral wall of the light guide 32, the light emitted by the lighting assembly 3 is three-dimensional and also belongs to the category of large-angle lamps. The light distribution curve diagram thereof can be referred to Figure 6 .

[0027] refer to Figure 1-Figure 3As a preferred solution of this embodiment, the top surface 320a of the light guide column 320 is a light emitting surface, and the top surfaces of all the light guide columns 320 corresponding to the LED lamp beads 300 on the same side of the light guide 32 and the double-sided circuit board 30 are tangent to the inner wall of the same cylinder, that is, the top surface of the light guide column 320 is an arc surface, and the edge lines of the top surfaces of all the light guide columns 320 on the same cross section are one arc segment of the same circle, and from Figure 3 It can be seen that Figure 3 The light guide 32 in the embodiment is shaped like an elliptical column, so the length of the light guide column in the middle is longer than that of the light guide columns on both sides. This design can make the light emitted from the light guide column 320 more uniform. The light intensity curve can refer to Figure 7 .

[0028] As a more preferred scheme of the above scheme, the top surfaces of all the light guide columns 320 on the light guide member 32 are tangent to the inner wall of the same cylinder, that is, the top surfaces of the light guide columns 320 corresponding to the LED lamp beads 300 on both sides of the double-sided circuit board 30 are tangent to the inner wall of the same cylinder. This can make the LED lamp beads 300 on both sides of the double-sided circuit board 30 have the same or similar light intensity distribution, and can also facilitate the manufacture of the light guide member.

[0029] In addition, the top surface of the light guide column 320 is preferably a frosted surface to improve the uniformity of its illumination.

[0030] Furthermore, the light guide column 32 is preferably in the shape of a truncated cone, and the diameter of the top of the light guide column is smaller than the diameter of the bottom. This design can not only improve the lighting efficiency, but also facilitate production and manufacturing (because light guide parts are generally obtained by injection molding of optical resin, the truncated cone-shaped light guide column is also easy to demold during injection molding).

[0031] refer to Figure 2 and Figure 3 As another preferred solution of the present embodiment, the light guide 32 is formed by splicing a left light guide 32a and a right light guide 32b. The left light guide 32a and the right light guide 32b form a space for placing the double-sided circuit board 30 at their splicing. The left light guide 32a and the right light guide 32b are both provided with a plurality of grooves 322 for accommodating the LED lamp beads 300 on their splicing surfaces. Each groove 322 corresponds to an LED lamp bead 300, that is, each light guide column 320 also corresponds to a groove 322. Preferably, the bottom surface of each groove 322 is the light incident surface of the corresponding light guide column 320, which can not only improve its light efficiency, but also facilitate the positioning between the LED lamp beads 300 and the light guide column 320 on the double-sided circuit board 30.

[0032] refer to Figure 2-Figure 5The left light guide 32a includes an arc-shaped first connecting portion 324a and a flat first light guide portion 326a, and the right light guide 32b includes an arc-shaped second connecting portion 324b and a flat second light guide portion 326b. The light guide column 320 on the left light guide 32a is arranged on the first light guide portion 326a, and the light guide column 320 on the right light guide 32b is arranged on the second light guide portion 324b. The first connecting portion 324a and the second connecting portion 324b are spliced ​​together into a cylindrical shape. The first connecting portion 324a and the second connecting portion 324b are both provided with a fixing portion 328 fixedly connected to the lamp holder assembly 1, so as to fix the light guide 32 to the lamp holder assembly 1.

[0033] The first connecting part 324a and the second connecting part 324b are spliced ​​together to form a cylindrical cavity which can also be used as a space for installing the drive component 2, making the entire LED flame lamp more compact. In addition, a slot for fixing the drive component 2 can be provided in the cavity to facilitate the positioning and installation of the drive component 2.

[0034] refer to Figure 3 In addition, the left light guide 32a is provided with a plurality of positioning posts 329 on its splicing surface, and the double-sided circuit board 30 is provided with positioning holes 302 matching the positioning posts 329 so as to facilitate the fixation of the double-sided circuit board 30 in the light guide 32.

[0035] refer to Figure 2 and Figure 3 As another preferred solution of the present embodiment, the LED lamp beads 300 on the front and back sides of the double-sided circuit board 30 are arranged in a staggered manner, that is, the LED lamp beads 300 on the front side of the double-sided circuit board 30 are all located in the gaps between the LED lamp beads 300 on the back side, and the LED lamp beads 300 on the back side are all located in the gaps between the LED lamp beads 300 on the front side. This allows the heat on the entire double-sided circuit board 30 to be distributed more evenly without causing the problem of heat accumulation, thereby facilitating heat dissipation and ensuring that the temperature is not too high during operation.

[0036] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. An LED flame lamp, comprising a lamp holder assembly, a driving assembly, a lighting assembly and a lampshade, characterized in that: The lighting assembly includes a double-sided circuit board and a cylindrical light guide. A plurality of LED lamp beads arranged in multiple rows and columns are provided on both the front and back sides of the double-sided circuit board. The light guide has a space for placing the double-sided circuit board. A plurality of light guide columns are provided on the outer peripheral wall of the light guide to emit three-dimensional light, and each light guide column corresponds to an LED lamp bead; the top surface of the light guide column is a light emitting surface, and the top surfaces of all the light guide columns corresponding to the LED lamp beads on the same side of the light guide and the double-sided circuit board are tangent to the inner wall of the same cylinder.

2. The LED flame lamp according to claim 1, characterized in that: The top surfaces of all the light guide columns on the light guide member are tangent to the inner wall of the same cylinder.

3. The LED flame lamp according to claim 1, characterized in that: The top surface of the light guide column is a frosted surface.

4. The LED flame lamp according to claim 1, characterized in that: The light guide column is in a truncated cone shape, and the diameter of the top of the light guide column is smaller than the diameter of the bottom thereof.

5. The LED flame lamp according to claim 1, characterized in that: The light guide is formed by splicing a left light guide and a right light guide, and the left light guide and the right light guide form a space for placing a double-sided circuit board at their splicing. The left light guide and the right light guide are both provided with a plurality of grooves for accommodating LED lamp beads on their splicing surfaces, and each groove corresponds to an LED lamp bead.

6. The LED flame lamp according to claim 5, characterized in that: The left light guide member includes an arc-shaped first connecting portion and a flat first light guide portion, and the right light guide member includes an arc-shaped second connecting portion and a flat second light guide portion. The light guide column on the left light guide member is arranged on the first light guide portion, and the light guide column on the right light guide member is arranged on the second light guide portion. The first connecting portion and the second connecting portion are spliced ​​together into a cylindrical shape, and the first connecting portion and the second connecting portion are both provided with a fixing portion fixedly connected to the lamp holder assembly.

7. The LED flame lamp according to claim 6, characterized in that: The first connecting portion and the second connecting portion are spliced ​​together to form a cylindrical cavity, and a slot for fixing the driving assembly is provided in the cavity.

8. The LED flame lamp according to claim 5, characterized in that: The left light guide is provided with a plurality of positioning posts on its splicing surface, and the double-sided circuit board is provided with positioning holes matching with the positioning posts.

9. The LED flame lamp according to claim 1, characterized in that: The LED lamp beads on the front and back sides of the double-sided circuit board are arranged in a staggered manner.

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