CN211450399U

CN211450399U - LED filament bulb

Info

Publication number: CN211450399U
Application number: CN201922126746.8U
Authority: CN
Inventors: 董缵熙; 高延增; 林祥华
Original assignee: Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Current assignee: Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-09-08
Anticipated expiration: 2029-12-02

Abstract

The utility model provides a LED filament bulb, including printing opacity lamp body, lamp holder, stem, spiral LED filament, drive assembly and light source subassembly, the light source subassembly holding is in the printing opacity lamp body to the opening of closing cap printing opacity lamp body, light source subassembly include the reinforcement light source, and the reinforcement light source is connected with the drive assembly electricity, and the front of the light emitting area of reinforcement light source towards LED filament bulb. The utility model discloses a reinforcement light source and spiral LED filament cooperation, the light that sends through the reinforcement light source compensaties that the light that the spiral LED filament sent can't shine the front of LED filament bulb or the defect weak at the positive intensity of LED filament bulb, thereby the center of LED filament bulb and the more weak technical problem of positive illumination intensity have been solved effectively, the front light intensity and the central light intensity of LED filament bulb have been improved, the dark spot appears because of the light intensity is low at the positive center of LED filament bulb has been prevented, the luminous homogeneity of LED filament bulb has been promoted.

Description

LED filament bulb

Technical Field

The utility model belongs to the technical field of the LED lamps and lanterns, more specifically say, relate to a LED filament bulb.

Background

At present, the LED filament bulb sold in the market generally provides illumination by using a spiral LED filament as a light source, but the illumination intensity of the light emitting mode is weak at the center and the front of the bulb, and the requirement of the energy star in the united states is difficult to meet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a LED filament bulb, including but not limited to the center of solving LED filament bulb and the positive light intensity technical problem that is more weak.

In order to achieve the above object, the utility model provides a LED filament bulb, including printing opacity lamp body, lamp holder, stem, spiral LED filament and drive assembly, the lamp holder closing cap in the opening part of printing opacity lamp body, the stem holding in the printing opacity lamp body, spiral LED filament twine in on the stem, drive assembly holding in the lamp holder and with the spiral LED filament electricity is connected, LED filament bulb still includes:

and the light source assembly is accommodated in the light-transmitting lamp shell and covers the opening of the light-transmitting lamp shell, the light source assembly comprises a reinforcing light source, the reinforcing light source is electrically connected with the driving assembly, and the light emitting surface of the reinforcing light source faces the front surface of the LED filament bulb.

Optionally, the light source assembly further includes a supporting plate, the supporting plate covers the opening of the light-transmitting lamp housing, and the reinforcing light source and the stem are respectively fixed to the same side of the supporting plate.

Optionally, the reinforcing light source is at least three LED beads, and the at least three LED beads are distributed around the stem column at equal intervals in the circumferential direction.

Optionally, the reinforcing light source is an annular LED filament, and the annular LED filament surrounds the outer side of the core column.

Optionally, the spiral LED filament includes a substrate, a plurality of LED chips and a flexible lamp tube, the substrate extends spirally in a three-dimensional manner, the plurality of LED chips are connected in series or in parallel on the substrate at intervals, the flexible lamp tube is sleeved outside the substrate, and two electrodes of the substrate are exposed outside the flexible lamp tube.

Optionally, the LED chips and the at least three LED lamp beads may emit light of one or more colors, respectively.

Optionally, the stem includes a base, a supporting rod and two wires, the base is fixed to the middle of the supporting plate, the supporting rod is fixed to the base, one end of each of the two wires is connected to two electrodes of the spiral LED filament, and the other end of each of the two wires is connected to the driving assembly.

Optionally, an exhaust passage is formed inside the base, and a first exhaust hole communicated with the exhaust passage is formed in the base.

Optionally, the LED filament bulb further comprises a liner, wherein the liner is accommodated in the lamp head and wrapped outside the driving assembly to separate the driving assembly from the lamp head.

Optionally, the LED filament bulb further comprises a drawing pin, one end of the drawing pin extends into the lamp holder and is connected with the driving assembly, and the other end of the drawing pin is exposed out of the lamp holder.

The utility model provides a LED filament bulb's beneficial effect lies in: the cooperation of the reinforcing light source and the spiral LED filament is adopted, the defect that the light emitted by the spiral LED filament can not irradiate the front of the LED filament bulb or the front intensity of the LED filament bulb is weak is compensated through the light emitted by the reinforcing light source, so that the technical problems of the center of the LED filament bulb and the weak front illumination intensity are effectively solved, the front light intensity and the central light intensity of the LED filament bulb are improved, the occurrence of dark spots in the front center of the LED filament bulb due to low light intensity is prevented, and the light emitting uniformity of the LED filament bulb is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic perspective exploded view of an LED filament bulb provided by the present invention;

fig. 2 is a schematic diagram of a part of the LED filament bulb according to the present invention;

fig. 3 is a schematic distribution diagram of a spiral LED filament and LED lamp beads of the LED filament bulb provided by the present invention;

fig. 4 is the distribution schematic diagram of the spiral LED filament and the annular LED filament of the LED filament bulb provided by the present invention.

Wherein, in the figures, the respective reference numerals:

the LED lamp comprises a lamp bulb with an LED filament 1, a light-transmitting lamp shell 10, a lamp holder 20, a core column 30, a spiral LED filament 40, a driving component 50, a light source component 60, a lining 70, a drawing pin 80, a base 31, a supporting rod 32, a lead 33, a reinforcing light source 61, a supporting plate 62, a first exhaust hole 310, an electrode 400, an LED lamp bead 611 and an annular LED filament 612.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that: when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. When a component is referred to as being "electrically connected" to another component, it can be electrically connected by conductors, or can be electrically connected by radios, or can be connected by various other means capable of carrying electrical signals. The terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and operate, and thus are not to be construed as limiting the patent, and the specific meanings of the above terms will be understood by those skilled in the art according to specific situations. The term "plurality" means two or more unless specifically limited otherwise.

It is right now that the utility model provides a LED filament bulb explains.

Referring to fig. 1 and fig. 2, the LED filament bulb 1 includes a light-transmitting lamp housing 10, a lamp cap 20, a stem 30, a spiral LED filament 40, a driving component 50, and a light source component 60, wherein the lamp cap 20 covers an opening of the light-transmitting lamp housing 10, the stem 30 is accommodated in the light-transmitting lamp housing 10, the spiral LED filament 40 is wound on the stem 30, the driving component 50 is accommodated in the lamp cap 20, the driving component 50 is electrically connected to the spiral LED filament 40, the light source component 60 is accommodated in the light-transmitting lamp housing 10 and covers the opening of the light-transmitting lamp housing 10, here, the light source component 60 includes a reinforcing light source 61, the reinforcing light source 61 is electrically connected to the driving component 50, and a light-emitting surface of the reinforcing light source. It should be further noted that the spiral LED filament 40 extends spirally around an axis, the light emitting surface of the spiral LED filament 40 is parallel to the axis and faces the side of the LED filament bulb 1, the "front" of the LED filament bulb 1 refers to the direction of the light-transmitting lamp housing 10 away from the lamp head 20, and the driving component 50 is an LED driver commonly used in the art.

When the lamp is used, after the driving assembly 50 is powered on, the spiral LED filament 40 and the reinforcing light source 61 are driven to be started at the same time, so that light emitted by the spiral LED filament 40 irradiates the side surface of the light-transmitting lamp housing 10, and light emitted by the reinforcing light source 61 irradiates the front surface of the light-transmitting lamp housing 10.

The utility model provides a LED filament bulb 1, the cooperation of reinforcement light source 61 and spiral LED filament 40 has been adopted, the light that sends through reinforcement light source 61 remedies the unable defect that shines LED filament bulb 1's front or at LED filament bulb 1's positive intensity weak of light that sends of spiral LED filament 40, thereby the center of LED filament bulb and the positive more weak technical problem of illumination intensity have been solved effectively, the front light intensity and the central light intensity of LED filament bulb have been improved, dark spot appears because of the light intensity is low at the positive center of LED filament bulb has been prevented, the luminous homogeneity of LED filament bulb has been promoted.

Optionally, please refer to fig. 1 and fig. 2, as a specific embodiment of the LED filament bulb provided by the present invention, the light source assembly 60 further includes a supporting plate 62, the supporting plate 62 is sealed at the opening of the light-transmitting lamp housing 10, and the reinforcing light source 61 and the stem 30 are respectively fixed on the same side of the supporting plate 62. Specifically, the support plate 62 encloses the inside of the light-transmitting lamp housing 10 to form a closed space, and the reinforcing light source 61 and the stem 30 are respectively fixed on the surface of the support plate 62 facing the front surface of the LED filament bulb 1 and are accommodated in the closed space. Therefore, the positioning of the reinforcing light source 61 and the spiral LED filament 40 is facilitated, and the corrosion of external water vapor, dust and the like to the reinforcing light source 61 and the spiral LED filament 40 is effectively prevented.

Optionally, please refer to fig. 2 and fig. 3, as a specific embodiment of the LED filament bulb provided by the present invention, the reinforcing light source 61 may be at least three LED lamp beads 611, where the at least three LED lamp beads 611 are distributed around the circumference of the stem 30 at equal intervals. Therefore, the light emitting uniformity of the LED filament bulb 1 can be effectively improved. Of course, according to specific situations and requirements, in other embodiments of the present invention, the reinforcing light source 61 may be two or more than three LED lamp beads 611, which is not limited herein.

Alternatively, referring to fig. 2 and fig. 4, as a specific embodiment of the LED filament bulb provided by the present invention, the reinforcing light source 61 may be an annular LED filament 612, where the annular LED filament 612 surrounds the outside of the stem 30. Therefore, the light emitting uniformity of the LED filament bulb 1 can be effectively improved.

Optionally, please refer to fig. 2, as a specific embodiment of the LED filament bulb provided by the present invention, the spiral LED filament 40 includes a substrate, a plurality of LED chips and a flexible lamp tube, wherein the substrate extends spirally around an axis, the plurality of LED chips are connected in series or in parallel at intervals on the substrate, the flexible lamp tube is sleeved outside the substrate, and two electrodes 400 of the substrate are exposed outside the flexible lamp tube. Specifically, the LED chips are fixed on the surface of the substrate facing the side of the LED filament bulb 1 through conductive adhesive, transparent adhesive, etc., that is, the light emitting surface of the LED chips is parallel to the winding axis of the substrate, the LED chips are connected in series or in parallel and connected to the two electrodes 400 of the substrate, and the flexible lamp tube is sleeved outside the substrate to wrap the LED chips, thereby forming the main light source of the LED filament bulb 1.

Optionally, as the utility model provides a specific implementation of LED filament bulb, a plurality of LED chips and at least three LED lamp pearl 611 can send the light of one or more colours respectively for LED filament bulb 1's range of application is wider, and the user can select different luminous mode's LED filament bulb 1 according to the needs of specific scene like this.

Optionally, referring to fig. 2, as a specific embodiment of the LED filament bulb provided by the present invention, the stem 30 includes a base 31, a support rod 32 and two wires 33, wherein the base 31 is fixed in the middle of the support plate 62, the support rod 32 is fixed on the base 31, one end of each of the two wires 33 is connected to two electrodes 400 of the spiral LED filament 40, and the other end of each of the two wires 33 is connected to the driving assembly 50. Specifically, the support rod 32 is fixed on an end surface of the base 31 far away from the support plate 62 for supporting the spiral LED filament 40, and two wires 33 penetrate through the base 31 for connecting the spiral LED filament 40 with the driving assembly 50.

Optionally, referring to fig. 2, as a specific embodiment of the LED filament bulb provided by the present invention, an exhaust channel (not shown) is formed inside the base 31, and a first exhaust hole 310 is formed on the base 31, and the first exhaust hole 310 is communicated with the exhaust channel. Specifically, the exhaust passage penetrates the base 31, and a second exhaust hole is opened in the support plate 62, the second exhaust hole penetrating the support plate 62 and communicating with the outside, and the first exhaust hole 310 and the second exhaust hole communicate with opposite ends of the exhaust passage, respectively. Thus, when the evacuation process is performed, the external evacuation device can evacuate the air in the transparent lamp housing 10 through the first exhaust hole 310, the exhaust channel and the second exhaust hole; when the inert gas is filled, the inert gas can be filled into the light-transmitting lamp housing 10 through the first exhaust hole 310, the exhaust channel and the second exhaust hole by an external air pump, so that the heat dissipation efficiency of the spiral LED filament 40 and the reinforcing light source 61 is improved; after the inert gas is filled, the second exhaust hole is plugged, so that the support plate 62 can be ensured to enclose the inside of the light-transmitting lamp housing 10 into a closed space, and the inert gas is prevented from leaking.

Optionally, referring to fig. 1, as a specific embodiment of the LED filament bulb provided by the present invention, the LED filament bulb 1 further includes a lining 70, the lining 70 is accommodated in the lamp head 20 and wraps outside the driving assembly 50, so as to achieve the purpose of separating the driving assembly 50 from the lamp head 20. Specifically, the lining 70 is made of an insulating and heat-conducting material, and is filled between the driving assembly 50 and the lamp cap 20, so that the driving assembly 50 and the lamp cap 20 can be prevented from being directly conducted, and the heat dissipation efficiency of the driving assembly 50 can be improved.

Optionally, please refer to fig. 1, as a specific embodiment of the LED filament bulb provided by the present invention, the LED filament bulb 1 further includes a drawing pin 80, one end of the drawing pin 80 extends into the lamp head 20 to be connected with the driving component 50, and the other end of the drawing pin 80 is exposed outside the lamp head 20. Specifically, the tail end of the lamp holder 20 is provided with a mounting hole, the drawing pin 80 is made of a conductive material, the outer contour of the drawing pin 80 is mushroom-shaped, the thin end of the drawing pin 80 penetrates through the mounting hole and extends into the lamp holder 20 to be connected with the driving assembly 50, the thick end of the drawing pin 80 protrudes out of the tail end of the lamp holder 20, and the drawing pin 80 can serve as a conductive electrode to be connected with an external power supply and the driving assembly 50, so that a lead wire for connecting the driving assembly 50 with the lamp holder 20 is omitted, automatic assembly of the LED filament bulb 1 is facilitated, and assembly efficiency of the LED filament bulb 1 is improved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

The LED filament bulb comprises a light-transmitting lamp shell, a lamp holder, a core column, a spiral LED filament and a driving assembly, wherein the lamp holder is covered at an opening of the light-transmitting lamp shell, the core column is contained in the light-transmitting lamp shell, the spiral LED filament is wound on the core column, the driving assembly is contained in the lamp holder and is electrically connected with the spiral LED filament, and the LED filament bulb is characterized by further comprising:

and the light source assembly is accommodated in the light-transmitting lamp shell and covers the opening of the light-transmitting lamp shell, the light source assembly comprises a reinforcing light source, the reinforcing light source is electrically connected with the driving assembly, and the light emitting surface of the reinforcing light source faces the front surface of the LED filament bulb.
2. The LED filament bulb of claim 1, wherein the light source assembly further comprises a supporting plate, the supporting plate covers the opening of the light-transmissive envelope, and the reinforcing light source and the stem are respectively fixed to the same side of the supporting plate.
3. The LED filament bulb of claim 2, wherein the reinforcing light source is at least three LED beads, and the at least three LED beads are distributed around the stem at equal intervals in the circumferential direction.
4. The LED filament bulb of claim 2, wherein the reinforcing light source is an annular LED filament surrounding the outside of the stem.
5. The LED filament bulb as claimed in any one of claims 1 to 3, wherein the spiral LED filament comprises a substrate, a plurality of LED chips and a flexible lamp tube, wherein the substrate extends in a three-dimensional spiral shape, the LED chips are connected in series or in parallel at intervals on the substrate, the flexible lamp tube is sleeved outside the substrate, and two electrodes of the substrate are exposed out of the flexible lamp tube.
6. The LED filament bulb of claim 5, wherein a plurality of the LED chips and at least three of the LED beads each emit light of one or more colors.
7. The LED filament bulb according to any one of claims 2 to 4, wherein the stem comprises a base, a support rod and two wires, the base is fixed at the middle part of the support plate, the support rod is fixed on the base, one ends of the two wires are respectively connected with the two electrodes of the spiral LED filament, and the other ends of the two wires are respectively connected with the driving assembly.
8. The LED filament bulb as claimed in claim 7, wherein an exhaust channel is formed inside the base, and a first exhaust hole communicated with the exhaust channel is formed on the base.
9. The LED filament bulb as claimed in any one of claims 1 to 4, further comprising a liner housed in the base and wrapped around the driving assembly to separate the driving assembly from the base.
10. The LED filament bulb as claimed in any one of claims 1 to 4, further comprising a drawing pin, wherein one end of the drawing pin extends into the lamp holder and is connected with the driving assembly, and the other end of the drawing pin is exposed out of the lamp holder.