CN209762750U

CN209762750U - LED filament lamp

Info

Publication number: CN209762750U
Application number: CN201920466646.7U
Authority: CN
Inventors: 王书昶; 孙智江; 吉爱华
Original assignee: Haidike Nantong Photoelectric Technology Co Ltd
Current assignee: Haidike Nantong Photoelectric Technology Co Ltd
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2019-12-10
Anticipated expiration: 2029-04-09

Abstract

The utility model relates to a LED filament lamp, which comprises a glass bulb shell, wherein a plurality of substrates are arranged in the glass bulb shell, and each substrate is distributed in an annular array by taking the axis of the glass bulb shell as the center; the LED chip facing to the axis of the glass bulb shell is arranged on the front surface of the substrate, and the back surface of the substrate faces to the glass bulb shell; and the inner wall of the glass shell bubble is coated with a heat dissipation coating corresponding to the back of the substrate. The utility model has the advantages that: the utility model discloses LED filament lamp lamps and lanterns, wherein, the base plate is given in the heat conduction that produces when the LED chip is luminous, transmits through the mode of heat radiation by the base plate, and most infrared light in the heat radiation is the visible light of short wavelength through just to the thermal coating conversion of base plate, and then smooth passing the glass shell bubble distributes away, avoids the infrared light can't pierce through the glass shell bubble and constantly gathers in a large number in the glass shell bubble, has promoted the radiating effect by a wide margin, effectual reduction light decay.

Description

LED filament lamp

Technical Field

The utility model relates to a LED lamps and lanterns field, in particular to LED filament lamp lamps and lanterns.

Background

An LED filament lamp is an incandescent lamp made of LEDs in appearance. In the past, an LED light source needs to reach a certain illumination and illumination area, optical devices such as a lens need to be additionally arranged, on one hand, the illumination effect is influenced, on the other hand, the due energy-saving effect of the LED can be reduced, the LED filament can realize 360-degree full-angle light emission, large-angle light emission can be realized, a three-dimensional light source can be realized without the addition of the lens, unprecedented illumination experience is brought, and the LED filament lamp is widely applied to various occasions at present.

LED filament lamps have higher packaging requirements than conventional incandescent lamps. According to the knowledge, the current LED filament lamp has very strict requirements on the design of the working voltage of the filament, the design of the working current of the filament, the area and the power of an LED chip, the light-emitting angle of an LED chip, the design of pins, the technology of sealing and arranging glass bulbs and the like, so that the manufacturing process of the LED filament lamp is very complicated, and has certain requirements on the capital investment, supporting facilities, the technology and the like of a manufacturer. In addition, the encapsulation of the LED filament lamp is more exquisite, the effect of light encapsulated by each enterprise is different, and the LED filament lamp still has certain limitations in power and heat dissipation, resulting in a higher price than a common LED light source.

Under the influence of the production process, the current LED filament lamp has a plurality of problems, such as: the cost is higher and the damage rate is higher in the transportation process due to the defects of the bulb material. In addition, the heat dissipation of the high-power LED filament lamp is also an urgent problem to be solved.

Most of the current filament lamp heat dissipation technical schemes adopt that the LED filament lamp bulbs are filled with degeneration gas to achieve the purpose of radiation heat dissipation, and the heat dissipation effect in practical application is not ideal. The reason is that most of the current LED lamp filaments adopt chips in COB packaging form, and effective technical means are applied to reduce heating or quickly conduct heat. The measures mainly comprise: optimization of substrate shape, selection of substrate material, thermoelectric shunting mode, etc. However, most of the above methods only increase the heat dissipation path, and do not fundamentally or efficiently dissipate the heat absorbed inside.

Therefore, the structure of the LED filament lamp capable of efficiently radiating heat is developed, so that the light attenuation can be effectively reduced, and the service life of the LED filament lamp can be greatly prolonged.

Upconversion is the process of converting long wavelength light into short wavelength light emission. The application relates to the fields of short wavelength laser, infrared detection and display, biological marking, optical communication, anti-counterfeiting and the like. The up-conversion material is a luminescent material which can emit visible light under the excitation of infrared light, namely, a material which converts infrared light into visible light. It is characterized by absorbed photon energy lower than emitted photon energy, a phenomenon that violates Stokes law, and is therefore also called anti-Stokes law luminescent material.

In recent years, a great deal of research reports the up-conversion luminescence phenomenon of ion-doped materials. Rare earth ions have abundant energy levels in the ultraviolet-visible-infrared range, and the energy levels have long fluorescence lifetime, so the rare earth ions are very suitable to be used as active ions of up-conversion luminescent materials. The up-conversion luminescence characteristic of the rare earth ion doped material has great application value, and can be widely applied to the aspects of information processing, optical storage, temperature measurement, biological fluorescence measurement, solar cells, laser anti-counterfeiting and the like.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a can effectively reduce the light decay, can greatly improve LED filament lamp lamps and lanterns life's high-efficient heat dissipation LED filament lamp lamps and lanterns simultaneously.

In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides a LED filament lamp lamps and lanterns which innovation point lies in: the glass bulb comprises a glass bulb shell, wherein a plurality of substrates are arranged in the glass bulb shell, and the substrates are distributed in an annular array by taking the axis of the glass bulb shell as the center; the LED chip facing to the axis of the glass bulb shell is mounted on the front surface of the substrate, the back surface of the substrate faces to the glass bulb shell, and the inner wall of the glass bulb shell is coated with a heat dissipation coating corresponding to the back surface of the substrate.

Further, the heat dissipation coating is an up-conversion material for converting long-wavelength light of thermal radiation into visible light.

Further, the up-conversion material is composed of a host material and dopant ions.

Further, the host material is one of fluoride, oxyfluoride or sulfide.

Further, the fluoride is hexagonal phase NaYF 4.

Further, the doping ion is one of praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, scandium, yttrium, nickel, molybdenum or chromium elements.

The utility model has the advantages that:

The utility model discloses LED filament lamp lamps and lanterns, wherein, the base plate is given in the heat conduction that produces when the LED chip is luminous, transmits through the mode of heat radiation by the base plate, and most infrared light in the heat radiation is the visible light of short wavelength through just to the thermal coating conversion of base plate, and then smooth passing the glass shell bubble distributes away, avoids the infrared light can't pierce through the glass shell bubble and constantly gathers in a large number in the glass shell bubble, has promoted the radiating effect by a wide margin, effectual reduction light decay.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is the structure schematic diagram of the LED filament lamp of the present invention.

Detailed Description

The following examples are presented to enable those skilled in the art to more fully understand the present invention and are not intended to limit the scope of the present invention.

Examples

As shown in fig. 1, the LED filament lamp of this embodiment includes a glass bulb 1, a plurality of substrates 2 are disposed in the glass bulb 1, the substrates 2 are distributed in an annular array with an axis of the glass bulb 1 as a center, LED chips 3 facing the axis of the glass bulb 1 are mounted on a front surface of the substrate 2, and a back surface of the substrate 2 faces the glass bulb 1; and the inner wall of the glass bulb 1 is coated with a heat dissipation coating 4 corresponding to the back surface of the substrate 2.

In this embodiment, the number of the substrates 2 is odd so that the main light emitting direction of each LED chip 3 is staggered from the other substrates 2 to avoid the other substrates blocking part of the light.

The heat dissipation coating 4 in the utility model is an up-conversion material for converting long wavelength light of thermal radiation into visible light, and the up-conversion material is composed of a matrix material and doped ions; the matrix material is one of fluoride, oxyfluoride or sulfide, wherein the fluoride is hexagonal phase NaYF 4.

The doping ion is one of praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, scandium, yttrium, nickel, molybdenum or chromium elements.

Claims

1. The utility model provides a LED filament lamp lamps and lanterns which characterized in that: the glass bulb comprises a glass bulb shell, wherein a plurality of substrates are arranged in the glass bulb shell, and the substrates are distributed in an annular array by taking the axis of the glass bulb shell as the center; the LED chip facing to the axis of the glass bulb shell is mounted on the front surface of the substrate, the back surface of the substrate faces to the glass bulb shell, and the inner wall of the glass bulb shell is coated with a heat dissipation coating corresponding to the back surface of the substrate.

2. The LED filament lamp fixture of claim 1 wherein: the heat dissipation coating is an up-conversion material for converting long-wavelength light of thermal radiation into visible light.

3. The LED filament lamp fixture of claim 2 wherein: the up-conversion material is composed of a host material and dopant ions.

4. The LED filament lamp fixture of claim 3 wherein: the matrix material is one of fluoride, oxyfluoride or sulfide.

5. The LED filament lamp fixture of claim 4 wherein: the fluoride is hexagonal phase NaYF 4.

6. The LED filament lamp fixture of claim 3 wherein: the doped ion is one of praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, scandium, yttrium, nickel, molybdenum or chromium elements.