CN203384704U - LED candle lights - Google Patents

Abstract

The utility model discloses a LED candle lamp, which comprises a housing, a lamp holder, a lampshade, an LED module and a light guide component, the LED module is installed on a fixed plate in the shell, the light guide component is installed in the light-emitting direction of the LED module, the light guide component comprises a cylindrical first light guide part and a hollow round platform-shaped second light guide part, the inner revolution surface of the second light guide part is a reflecting surface, the outer revolution surface of the second light guide part is a transmission surface, the lampshade covers the outside of the LED module and the light guide component and is installed at one end of the shell, and the lamp holder is installed at the other end of the shell relative to the lampshade; the reflecting surface comprises a conical first reflecting surface close to the LED module and a conical second reflecting surface far away from the LED module, and the slope of the first reflecting surface is smaller than that of the second reflecting surface. The utility model discloses a LED candle lamp has high light transmittance, and the advantage that the light efficiency is high can realize that 300 degrees wide-angle and light distribution are even, and its illumination effect more accords with the light atmosphere of candle.

Description

LED candle lights

technical field

The utility model relates to a lighting device, in particular to an LED candle lamp.

Background technique

LED candle lights are more and more used for interior decoration because of their energy saving, long service life and no danger. There are three main types of existing LED candle lamps:

The first is that the luminous body is made to resemble the shape of a candle flame, and the shape is very realistic with the candle, but the light guide effect of the luminous body in the shape of the candle flame does not have the light atmosphere effect of the candle.

The second type is a cylindrical illuminant, which transmits the LED light at the base of the illuminant to the illuminant through the light guide structure of the cylindrical luminous body, thereby creating a light atmosphere similar to a candle. Although the shape of the lens structure of this cylindrical illuminant is different from that of a candle, the light atmosphere it emits is closer to candle light. The disadvantages of the lens structure of this cylindrical illuminant are: 1. The light is more concentrated on the top, the central light is strong, the surrounding light is weak, and the beam diffusion angle is not enough, which still has a gap with the light distribution of a real candle. 2. The shape of the lens structure of the cylindrical illuminant is quite different from that of the candle. Ordinary LED candle lamps have uneven light transmission effects and low light efficiency, which cannot meet people's needs.

The third is to set a cylindrical lens in the light-emitting direction of the LED module. The upper end of the lens has a concave portion. A direction or a second direction inclined more toward the base side than the first direction. Part of the light reflected by the lens is emitted to the rear side (base side) of the LED lamp due to the diffusion effect of the optical cover. This kind of LED light can realize a 260-degree illumination range, and its light intensity distribution is fairly uniform within the 180-degree range of the light-emitting surface of the LED module, but the light intensity distribution in the central part is relatively weak, and it can only be used as an ordinary electric light. The lighting effects required by candle lamps do not quite match.

Contents of the invention

In view of the above-mentioned current state of the art, the technical problem to be solved by the utility model is to provide an LED candle lamp, which can realize a large-angle uniform light distribution, so that the light distribution effect can be more consistent with the light atmosphere required by the candle.

In order to solve the above technical problems, the utility model provides an LED candle lamp, which includes a housing, a lamp holder, a lampshade, an LED module and a light guide member. A fixing plate is arranged inside the housing, and the LED module is installed on the fixing On the board, the light guide part is installed in the light emitting direction of the LED module, and the light guide part includes a cylindrical first light guide part and a hollow round platform arranged at the end of the first light guide part away from the LED module The second light guide part is shaped like a second light guide part, the inner turning surface of the second light guide part is a reflective surface, the outer turning surface of the second light guide part is a transmission surface, and the lampshade covers the LED module and the light guide part. The light component is external and installed at one end of the housing, and the lamp head is installed at the other end of the housing relative to the lampshade; the reflective surface includes a tapered first reflective surface close to the LED module and a tapered first reflective surface away from the The tapered second reflective surface of the LED module, and the slope of the first reflective surface is smaller than the slope of the second reflective surface.

In one of the embodiments, the second reflective surface is a coated reflective surface, and the reflectance of the second reflective surface is greater than 90%.

In one of the embodiments, one end of the second reflective surface opposite to the first reflective surface is connected to the transmissive surface.

In one of the embodiments, an end of the first reflective surface opposite to the second reflective surface extends into the first light guide portion.

In one of the embodiments, the transmission surface includes a first transmission surface close to the LED module and a second transmission surface away from the LED module, and the first transmission surface is a convex arc surface, and the first transmission surface The two transmissive surfaces are trumpet-shaped with an opening facing the first transmissive surface.

In one of the embodiments, the outer turning surface of the first light guide part is a third reflecting surface, and the third reflecting surface is in the shape of a drum.

In one embodiment, a support plate is installed on the fixing plate, and an end of the light guide component close to the LED module is fixed on the support plate.

In one of the embodiments, the cross-sectional shape of the end of the lampshade is parabolic.

In one of the embodiments, the end of the lampshade is curved and pointed.

In one of the embodiments, the height of the lampshade is basically in a golden ratio to the height of the light guide member.

Compared with the prior art, the LED candle lamp provided by the utility model has a high light transmittance and high light efficiency due to the adoption of the above-mentioned structure in the light guide part, and can realize relatively uniform light at a large angle of 300 degrees. distribution, its lighting effect is more in line with the light atmosphere of candles.

Description of drawings

Fig. 1 is a front structural schematic diagram of an LED candle lamp in one embodiment of the present invention;

Fig. 2 is a sectional view along line A-A in Fig. 1;

Fig. 3 is a schematic structural view of the light guide part of the LED candle lamp in Fig. 1;

4a and 4b are schematic diagrams of the optical path of the first reflective surface;

Fig. 5 is a light distribution curve diagram of the LED candle lamp in Fig. 1;

Fig. 6 is a schematic diagram of the front structure of the LED candle lamp in another embodiment of the present invention;

Fig. 7 is a sectional view along line B-B in Fig. 6 .

In the above figures, 1. lampshade; 2. light guide member; 21. first light guide part; 21a, third reflection surface; 22. second light guide part; 22a, first reflection surface; 22b, second reflection 22c, first transmission surface; 22d, second transmission surface; 3, LED module; 4, support plate; 5, screw; 6, fixing plate; 7, shell;

Detailed ways

The utility model is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

As shown in Figures 1 and 2, the LED candle lamp in one embodiment of the present invention includes: a housing 7, a lamp holder 9, a lampshade 1, an LED module 3 and a light guide member 2, wherein one end of the housing 7 is connected to The lamp holder 9 is connected, and the other end of the shell 7 is connected with the lampshade 1 , and the drive power 8 and the fixing plate 6 are housed in the shell 7 . The housing 7 is preferably made of aluminum to dissipate heat from the LED module 3 and the driving power 8 . The LED module 3 as a light source is installed on the fixing plate 6 .

The light guiding component 2 is installed in the lampshade 1 and located in the light emitting direction of the LED module 3 . As shown in FIG. 3 , the light guide member 2 includes a cylindrical first light guide part 21 and a hollow circular frustum-shaped second light guide part 22 disposed at the end of the first light guide part 21 away from the LED module 3 , so The inner turning surface of the second light guide part 22 is a reflective surface, which includes a tapered first reflective surface 22a close to the LED module 3 and a tapered second reflective surface 22b away from the LED module 3, and The slope of the first reflective surface 22a is smaller than the slope of the second reflective surface 22b. There is a matching relationship between the slope range of the first reflective surface 22a and the slope range of the second transmissive surface 22d, if the slope of the first reflective surface 22a is too small, the light will return from the original path (see Figure 4a), reducing Transmittance; On the contrary, if the slope is too large, the light will be emitted from the front (see Figure 4b), and cannot reach the side, which will affect the shape of the light distribution. Preferably, an end of the first reflective surface 22a opposite to the second reflective surface 22b extends into the first light guide portion 21 . The reflectance of the second reflective surface 22b has a great influence on the transmittance of light, so preferably, the second reflective surface 22b is a coated reflective surface, and the reflectance of the second reflective surface 22b is greater than 90%. . In order to prevent light from emitting from the front, one end of the second reflective surface 22b opposite to the first reflective surface 22a is connected to the transmissive surface.

The outer turning surface of the second light guide part 22 is a transmission surface, and the transmission surface includes a first transmission surface 22c close to the LED module 3 and a second transmission surface 22d away from the LED module 3. The transmissive surface 22c is an outwardly convex arc surface, and the second transmissive surface 22d is trumpet-shaped with an opening facing the first transmissive surface 22c.

Preferably, the outer turning surface of the first light guide part 21 is the third reflecting surface 21a, and the third reflecting surface 21a is in the shape of a drum or other suitable deformations.

Preferably, in order to reduce interface light loss, the light guide component 2 is integrally processed with PC material. Of course, it can also be processed by assembly parts.

Fig. 5 is the light distribution curve of the present utility model. It can be seen from the curve in Fig. 5 that the LED candle lamp in this embodiment can realize nearly 300 degrees of light coverage. From the light intensity distribution of a single LED lamp grain, the central divergence angle of the lamp grain The light intensity at 20 degrees is relatively strong, and the light intensity distribution at other angles is relatively uniform. In this way, corresponding to the light source composed of multiple LED lamp grains, the overall light intensity is relatively uniform, and the light intensity in the small area in the center of the light source is relatively strong, similar to the light atmosphere effect of candle light intensity distribution.

Preferably, one end of the light guide component 2 close to the LED module 3 is fixed on the support plate 4 , and the support plate 4 is fixed on the fixing plate 6 by screws 5 .

The lampshade 1 covers and protects the LED module 3 and the light guide part 2, and transmits the light emitted by the LED module 3. The lampshade 1 is made of optical grade glass. Preferably, the cross-sectional shape of the end of the lampshade 1 is parabolic (as shown in FIG. 2 ).

As shown in FIG. 2 , preferably, the height H2 of the lampshade 1 is basically in a golden ratio to the height H1 of the light guide member 2 .

Fig. 6 and Fig. 7 are schematic diagrams of the structure of the LED candle lamp in another embodiment of the present invention. The difference from the above embodiment is that the end of the lampshade 1 of the LED candle lamp in this embodiment is curved and pointed , so that the appearance of the LED candle lamp in this embodiment looks like a grass shape, which is more beautiful.

The above-mentioned embodiments only express several implementations of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims (10)

1. An LED candle lamp, comprising a housing, a lamp cap, a lampshade, an LED module and a light guide member, a fixing plate is arranged in the housing, the LED module is mounted on the fixing board, and the light guide member is installed on the In the light emitting direction of the LED module, the light guide member includes a cylindrical first light guide part and a hollow circular frustum-shaped second light guide part arranged at the end of the first light guide part away from the LED module. The inner turning surface of the second light guiding part is a reflecting surface, the outer turning surface of the second light guiding part is a transmitting surface, and the lampshade covers the outside of the LED module and the light guiding component and is installed on the outer surface of the casing. One end, the lamp head is installed on the other end of the housing relative to the lampshade; it is characterized in that the reflective surface includes a tapered first reflective surface close to the LED module and a tapered first reflective surface away from the LED module a second reflective surface, and the slope of the first reflective surface is smaller than the slope of the second reflective surface. 2. The LED candle lamp according to claim 1, wherein the second reflective surface is a coated reflective surface, and the reflectance of the second reflective surface is greater than 90%. 3. The LED candle lamp according to claim 1, wherein an end of the second reflective surface opposite to the first reflective surface is connected to the transmissive surface. 4 . The LED candle lamp according to claim 1 , wherein an end of the first reflective surface opposite to the second reflective surface extends into the first light guide portion. 5. The LED candle lamp according to claim 1, wherein the transmission surface includes a first transmission surface close to the LED module and a second transmission surface far away from the LED module, and the first transmission surface The surface is a convex arc surface, and the second transmission surface is a trumpet shape with an opening facing the side of the first transmission surface. 6. The LED candle lamp according to claim 1, characterized in that, the outer turning surface of the first light guide part is a third reflecting surface, and the third reflecting surface is in the shape of a drum. 7 . The LED candle lamp according to claim 1 , wherein a support plate is installed on the fixing plate, and an end of the light guide member close to the LED module is fixed on the support plate. 8. The LED candle lamp according to any one of claims 1 to 7, characterized in that, the cross-sectional shape of the end of the lampshade is a parabolic shape. 9. The LED candle lamp according to any one of claims 1 to 7, wherein the end of the lampshade is curved and pointed. 10. The LED candle lamp according to any one of claims 1 to 7, characterized in that, the height of the lampshade is basically in a golden ratio to the height of the light guide member.

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