CN2911390Y - A LED lighting bulb - Google Patents

Abstract

The utility model relates to a LED lighting technology field refers in particular to a LED lighting bulb. The LED lamp comprises a metal lamp holder, a heat-conducting lamp shell is fixed in an inner cavity of the metal lamp holder, a driving circuit board is arranged in the inner cavity of the heat-conducting lamp shell and is connected to a metal substrate through a conducting wire, at least one LED lamp is arranged on the upper surface of the metal substrate, high-refraction glass beads are further arranged in other areas of the upper surface of the metal substrate, a transparent lampshade is matched with the heat-conducting lamp shell, the metal substrate and the LED lamp are sealed in the transparent lampshade, a transparent film is coated on the inner surface of the transparent lampshade, and the refractive index of the transparent film is larger than that of air. The utility model has the advantages of high brightness, uniform color, large visual angle range, etc.

Description

A LED lighting bulb

Technical field:

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

Background technique:

Traditional incandescent light bulbs use tungsten filament bulbs. Although this kind of bulb has high brightness, its luminous efficiency is low and consumes a lot of power. Lamp life is short. White light LED is a new type of lighting fixture developed and put into production in recent years. Compared with traditional lamps, it has the advantages of low voltage, low power consumption, high luminous efficiency, high reliability, and long life. It is a new type of green lighting that is environmentally friendly and energy-saving. Lighting source. The current LED lighting bulb is shown in Figure 1. The main structure of this LED lighting bulb includes a lamp cap 101, a lamp housing 102, and a transparent lampshade 103. A driving circuit board 104 and a substrate 105 are arranged in the lamp housing 102. There are a plurality of LED lamps 106. After the power is turned on, the plurality of LED lamps emit light at the same time, which can reach a certain brightness and realize the lighting effect. The refractive index of the air in the cavity of the transparent lampshade 103 is low, and the directionality of the light emitted by the LED lamp 106 will cause the brightness above the transparent lampshade 103 to be higher than the brightness below, the spherical surface of the bulb has uneven color, the viewing angle range is small, and the overall brightness of the bulb is low.

Utility model content:

The purpose of the utility model is to provide an LED lighting bulb for the shortcomings of the prior art, which overcomes the shortcomings of ordinary LED lighting bulbs such as low brightness, uneven color, and small viewing angle range.

In order to achieve the above purpose, the technical solution adopted by the utility model is: it includes a metal lamp cap, the inner cavity of the metal lamp cap is fixed with a heat-conducting lamp housing, and a driving circuit board is arranged in the inner cavity of the heat-conducting lamp housing, and the driving circuit board is connected to the metal substrate through a wire In addition to at least one LED lamp arranged on the upper surface of the metal substrate, a layer of glass beads with a refractive index greater than 2.0 is also arranged on other areas of the upper surface of the metal substrate. The heat-conducting lamp housing is equipped with a transparent lampshade, and the metal substrate and the LED lamp are sealed in a transparent In the lampshade, a layer of transparent film is coated on the inner surface of the transparent lampshade, and the refractive index of the transparent film is greater than that of air but smaller than that of the transparent lampshade.

A stepped layer is arranged on the upper part of the inner wall of the heat-conducting lamp housing, and the metal substrate is fixed on the stepped layer by metal screws.

A groove is formed after the metal substrate and the heat-conducting lamp housing are assembled, and the transparent lampshade is inserted in the groove and fixed by heat-conducting glue.

At least one ventilation hole is opened on the surface of the metal lamp holder, and the ventilation hole communicates with the inner cavity of the heat-conducting lamp housing.

The inner surface of the transparent lampshade is coated with a layer of transparent film. The refractive index of the transparent film is greater than that of air but smaller than that of the transparent lampshade. While uniformly mixing and emitting outward, the reflected light hits the high-refraction glass beads on the upper surface of the metal substrate, and the glass beads reversely reflect the reflected light to produce light parallel to the reflected light, which returns to the transparent film and then refracts , The transmission is evenly mixed and emitted outwards, so that the brightness of the bulb is improved, the color is uniform, and the viewing angle is increased. In addition, the heat generated by the LED light is conducted to the heat-conducting lamp shell through the metal substrate, and the contact area is large, and the heat is quickly dissipated, so the LED has a long life.

Description of drawings:

Fig. 1 is a structural schematic diagram of an existing LED light bulb;

Fig. 2 is a structural representation of the utility model;

Fig. 3 is another schematic structural view of the utility model.

Detailed ways:

As shown in Figures 2 and 3, the utility model includes a metal lamp cap 1, a heat-conducting lamp housing 3 is fixed in the inner cavity of the metal lamp cap 1, and a driving circuit board 4 is arranged in the inner cavity of the heat-conducting lamp housing 3, and the driving circuit board 4 is connected to the Metal substrate 5, in addition to at least one LED lamp 6 arranged on the upper surface of the metal substrate 5, a layer of high-refractive glass beads 7 are arranged on other areas of the upper surface of the metal substrate 5, and the high-refractive glass beads 7 are highly transparent solid microspheres , whose refractive index is greater than 2.0, the heat conduction lamp housing 3 is equipped with a transparent lampshade 8, the metal substrate 5 and the LED lamp 6 are sealed in the transparent lampshade 8, and the inner surface of the transparent lampshade 8 is coated with a layer of transparent film 9, and the refractive index of the transparent film 9 is greater than The refractive index of air is smaller than that of the transparent lampshade 8 . The inner surface of the transparent lampshade 8 is coated with a layer of transparent film 9. The refractive index of the transparent film 9 is greater than that of air but smaller than that of the transparent lampshade 8, which not only can improve the transmittance of the LED light, but also when the light emitted by the LED lamp 6 passes through the When the transparent film 9 refracts and transmits uniformly mixed and shoots outward, the reflected light hits the high refraction glass beads 7 on the upper surface of the metal substrate 5, and the glass beads 7 reversely reflect the reflected light to generate light parallel to the reflected light After returning to the transparent film 9, refraction, transmission, uniform mixing and outward injection, the brightness of the bulb is improved, the color is uniform, and the viewing angle is increased.

The inner wall of the heat-conducting lamp housing 3 is provided with a stepped layer 10, and the metal substrate 5 is fixed on the stepped layer 10 by metal screws 11. The heat generated when the LED lamp 6 emits light is conducted to the heat-conducting lamp housing 3 through the metal substrate 5, and the contact range is large and large. Part of the heat is dissipated outwards, the heat dissipation is fast, and the LED lamp 6 has a long service life.

After the metal substrate 5 and the heat-conducting lamp housing 3 are assembled, a groove 12 is formed. The transparent lampshade 8 is inserted in the groove 12 and fixed by the heat-conducting glue 13. The heat-conducting glue 13 has the characteristics of fast heat dissipation and can be placed on the metal The heat dissipates quickly.

There is at least one vent hole 2 on the surface of the metal lamp cap 1, and the vent hole 2 communicates with the inner cavity of the heat-conducting lamp housing 3 to realize air convection to achieve the purpose of heat dissipation, and at the same time make the air pressure in the inner cavity of the heat-conducting lamp housing 3 consistent with the outside world

Of course, the above-described embodiments are only preferred examples of the present utility model, and are not intended to limit the scope of implementation of the present utility model, so all equivalents done according to the structure, features and principles described in the scope of patent application for the present utility model Changes or modifications are all included in the patent scope of the utility model application.

Claims (5)

1, a kind of LED lighting bulb, comprise metallic lamp holder (1), metallic lamp holder (1) inner chamber is fixed with heat conduction lamp housing (3), be provided with drive circuit board (4) at heat conduction lamp housing (3) inner chamber, drive circuit board (4) is received metal substrate (5) by connecting wire, at metal substrate (5) upper surface except being furnished with at least one LED lamp (6), other zone of metal substrate (5) upper surface also is furnished with high-refraction glass bead (7), heat conduction lamp housing (3) is supporting Transparent lamp shade (8), metal substrate (5) and LED lamp (6) are sealed in the Transparent lamp shade (8), it is characterized in that: Transparent lamp shade (8) inner surface scribbles layer of transparent film (9), the refractive index of hyaline membrane (9) greater than the refractive index of air less than the refractive index of Transparent lamp shade (8).

2, a kind of LED lighting bulb according to claim 1 is characterized in that: heat conduction lamp housing (3) upper inside wall is provided with a flight (10), and metal substrate (5) is fixed on the flight (10) by metal screw (11).

3, a kind of LED lighting bulb according to claim 1 is characterized in that: metal substrate (5) forms a groove (12) when assembling with heat conduction lamp housing (3), and Transparent lamp shade (8) is plugged in the groove (12) and by heat conduction viscose glue (13) and fixes.

4, a kind of LED lighting bulb according to claim 1, it is characterized in that: high-refraction glass bead (7) is high transparent solid microballoon, and its refractive index is greater than 2.0.

5, a kind of LED lighting bulb according to claim 1 is characterized in that: metallic lamp holder (1) surface has at least one passage (2), and passage (2) is communicated with the inner chamber of heat conduction lamp housing (3).

Images