CN201093331Y - Light distribution energy-saving lampshade - Google Patents

Abstract

A light distribution energy-saving lampshade is composed of an upper lampshade main body combined with a lower light-transmitting plate, a focusing cover and a light distribution curve reflector cover are arranged inside the lampshade, and one or more light-emitting bodies are arranged with a cone-shaped reflector directly below the light-emitting bodies. When the light-emitting bodies are lit, the light emitted from the lampshade can be evenly distributed in the irradiated area, and the Gaussian distribution phenomenon in which the direct irradiation area is particularly bright will not be generated to achieve energy-saving effects, and glare can be avoided when the eyes directly see the strong light of the light-emitting body at any angle.

Description

Light distribution energy-saving lamp shade

technical field

The present invention relates to a lampshade, in particular to a light distribution energy-saving lampshade.

Background technique

Lighting lamps are generally divided into two types: indoor and outdoor. Indoor lamps are mainly half-covered (please refer to FIG. 1A ). With reflective effect, in order to avoid the glare and glare caused by the light source to the eyes, this kind of lamp is usually atomized on the surface of the light source to reduce the above phenomenon. Due to consideration of environmental factors, outdoor lamps and lanterns are mainly full-cover lampshades (please refer to Figure 1B), and the light-transmitting lampshade 104 below is also treated with atomization to avoid glare when the eyes look directly at the light source. Both of them have a lot of losses The brightness and light are only concentrated in the local area directly under the light source.

Contents of the invention

The purpose of the utility model is to provide an energy-saving lampshade with light distribution, in order to improve the uneven illumination brightness problem that the local area directly below the light source in the lighting area of the conventional lampshade is brighter and the area farther away from the light source is darker.

According to the above purpose, the utility model provides a light distribution energy-saving lampshade, comprising:

A main body of the lampshade, at least one lamp socket connected to the power cord is installed in the main body of the lampshade;

More than one luminous body that obtains power through the above-mentioned lamp holder and emits light is installed on the lamp holder in the main body of the above-mentioned lampshade; it is characterized in that:

A condensing cover, the top of which is provided with a perforation for the above-mentioned luminous body to pass through;

A reflector, which is fixedly arranged in the main body of the lampshade and closely connected with the condenser cover, and its inner surface is composed of several planes connected to form a light distribution curve. The size and angle of each plane should be the The included angle formed by the reflected light reflected from the incident light to a specific block, according to the law of reflection "incident angle = reflection angle" and the principle of "normal line perpendicular to the plane", set the relative angle and size of the plane and the horizontal plane;

A light-transmitting plate is arranged at the light-emitting end of the main body of the above-mentioned lampshade; and

A cone-shaped reflector is arranged on the inner side of the above-mentioned light-transmitting plate, and the top of the cone faces the center of the above-mentioned illuminant;

The condensing cover condenses the light of the illuminant on the surface of the above-mentioned conical reflector below, and then reflects the light to the above-mentioned reflector; the above-mentioned light distribution curve reflector reflects the light to the predetermined irradiation area to reach the lighting area The effect of uniform distribution of brightness; and the above-mentioned conical reflector makes part of the light reflected more than twice and then projected to the block to be illuminated, so as to control the light to irradiate a specific block.

Among them: the light-transmitting plate has a digital critical angle, and at least one side is a digital grating. The gap, angle, specification, and shape of the grating are designed according to the optical critical angle principle of the light-transmitting plate material, and the incident angle of the direct incident light of the above-mentioned luminous body is controlled. If the incident angle is greater than the critical angle, it will be totally reflected and will not directly pass through the light-transmitting plate. Other light rays that are not directly incident by the above-mentioned luminous body will directly pass through the light-transmitting plate if the incident angle is smaller than the critical angle.

Wherein, the light-transmitting plate is a circular ring-shaped grating.

Wherein, the light-transmitting plate is a square strip grating.

Wherein, the condenser is in the shape of a parabolic curve.

Wherein, the condensing cover is partly elliptic curve.

Beneficial effects of the utility model:

According to the utility model, a parabolic curve or a partial elliptic curve concentrating cover is specially installed in the lampshade, which can condense the light on the surface of a conical reflector below, and a light distribution curve reflector. Arranged and combined, it can reflect light to the predetermined irradiation area to achieve the effect of uniform distribution of brightness in the illuminated area. A conical reflector located directly under the light source makes part of the light reflected twice or more and then projected to the area to be illuminated block, so that the light can be more precisely controlled to hit a specific block.

In order to improve the problem of brightness loss caused by fogging the surface of the light emitting surface of the conventional lampshade to avoid eye glare, a light-transmitting plate is used as the lighting mask body. A certain surface of the light-transmitting plate can have several different angles. Gratings, these gratings can control the incident angle of light at certain specific angles when the light passes through the transparent plate is always greater than the critical angle of the transparent object, so that the light is fully reflected, which can prevent the eyes from looking directly at any angle The glare effect will be produced at the bright spot of the light source, and the brightness of the light transmitted through the transparent object will hardly be weakened, so as to achieve the effect of energy saving.

Description of drawings

Fig. 1A shows a schematic diagram of a conventional half-shade lamp,

Fig. 1B shows a schematic diagram of a conventional full cover lamp,

Fig. 2 shows the sectional view of the first embodiment of the present invention,

Fig. 3 shows a certain enlarged display section of the light distribution curve reflector of the first embodiment of the present invention shown in Fig. 2,

Fig. 4 shows the plane view that the light-transmitting plate in Fig. 2 is a circular annular grating plate,

Figure 4A shows a side view of Figure 4,

Figure 4B shows an enlarged view of part B in Figure 4A,

Fig. 5 shows that the light-transmitting plate in Fig. 2 is a plan view of a square strip grating plate,

Figure 5A shows a side view of Figure 5,

Figure 5B shows an enlarged view of part B in Figure 5A,

Fig. 6 shows the schematic diagram of the light emission of the present invention,

Fig. 7 shows a cross-sectional view of another embodiment of the present invention.

Detailed ways

Please refer to Fig. 2, which is the first embodiment of the present invention, in which a perforation 702 is opened on the cover body of the lampshade main body 701, a lamp holder 703 is installed inside it, and a luminous body 704 is installed on the lamp holder 703 to obtain power And glow.

Inside the lampshade main body 701, a spotlight 708 is formed above the dotted line 709, which can be a parabolic curve or a partial elliptic curve, and this illustration shows a parabolic curve. A perforation is also provided on the top of the light collecting cover 708 for the illuminant 704 fixed in the main body 701 of the lamp cover to pass through.

Inside the lampshade main body 701 , at the part below the dotted line 709 , a light distribution curve reflector 705 is formed, which is fixed in the lampshade main body and connected with the condensing cover 708 .

Below the lampshade main body 701, a light-transmitting plate 706 is installed as a movable device. The light-transmitting plate 706 is installed at the light illumination end of the lampshade main body, and a cone-shaped reflector 707 is fixed on the inside of the light-transmitting plate 706; the cone-shaped reflector The apex of the cone 707 faces the illuminant 704 . The parabolic condenser cover 708 can focus the light irradiated by the illuminant 704 on the lower conical reflector 707 so that the light is refracted to the reflector 705 and then refracted out of the illuminated area.

The light distribution curve reflector 705 is a curve formed by connecting several planes. The size and angle of these planes are based on the angle formed by the incident light and the reflection line to be reflected to a specific block on the plane, and is determined by optical reflection. The principle calculates the relative angle and size of this plane and the horizontal line.

For example, please refer to FIG. 3 , which is an enlarged display section 203 of a light distribution curve reflector 705 . When an incident light 107 from a fixed direction is reflected to a specific block 114 to be illuminated by one of the planes 105 , the incident light 107 Form an included angle f117 with the reflected light 108; use the derivation method to calculate according to the reflection principle: f11÷2=incident angle a115=reflection angle b116, this can locate the correct angle of the normal line 113, and the normal line is perpendicular to the plane 105, That is, the angle e112 of the plane 105 relative to the horizontal line 111 can be determined.

The light-transmitting plate 706 has a digital critical angle, and at least one side is a digital grating. The gap, angle, specification, and shape of the grating are designed according to the principle of the optical critical angle of the light-transmitting plate 706 material, and the incident angle of the direct incident light of the illuminant 704 is controlled. Light rays that are greater than the critical angle are totally reflected and do not directly pass through the light-transmitting plate, and other light rays that are not directly incident by the illuminant 704 have an incident angle smaller than the critical angle and directly pass through the light-transmitting plate.

Please refer to FIG. 4 and FIG. 4A , the transparent plate 706 in FIG. 2 can be a circular ring-shaped grating plate 401 . Referring to FIG. 4B , one side of the circular ring-shaped grating plate 401 is provided with a ring-shaped grating 403 , and the other side can also be a grating or a plane 402 , which is shown as a plane in this illustration.

Please refer to FIG. 5 and FIG. 5A , the transparent plate 706 in FIG. 2 can also be a square strip grating plate 501 . Referring to FIG. 5B , one side of the strip grating plate 501 is provided with several strip gratings 503 , and the other side can be a grating or a plane 502 , which is shown as a plane in this illustration.

The grating spacing, angle, and shape of the two different shapes of light-transmitting plates shown in Figure 4 and Figure 5 are not the same. The correct data is based on the control of whether the grating is permeable or permeable when the incident light rays at different angles irradiate the grating. It is total reflection; when the light is to be permeable, the design is to make the light incident angle smaller than the critical angle of the light-transmitting plate to refract the grating; otherwise, to make the light impenetrable, the design is to make the light incident angle larger than the The critical angle of the light-transmitting plate is total reflection.

For example, please refer to FIG. 6 , the critical angle of the transparent acrylic sheet 803 is 42.15°. And one of the light rays 802 irradiated from the light source 801 is refracted when it is reflected twice to the plane of the transparent acrylic material plate 803, and when it reaches the grating on the other side of the plate 803, the incident angle θ1 804 is 41.75°, because it is smaller than the critical angle 42.15° , so the plate 803 is refracted into the lighting area again; the incident angles θ2 to θ5 of other light rays are 37.72°, 38.91°, 28.34°, and 22.64° respectively, all of which are smaller than the critical angle 42.15°, so they refract the plate 803 into the lighting area again area.

Another light ray 805 irradiated from the light source 801 is refracted when it reaches the plane of the transparent acrylic material plate 803, and when it reaches the grating on the other side of the plate 803, the incident angle θ6 806 is 42.83°, because it is greater than the critical angle 42.15°, so it is full The reflective state will not directly penetrate the plate into the lighting area; the incident angles θ7 and θ8 of other light rays are 43.46° and 42.72° respectively, both of which are greater than the critical angle of 42.15°, so the total reflection state will not directly penetrate the plate into the lighting area.

From the explanation in Fig. 6, it can be known that the present invention installs a parabolic curve or a part of the elliptic curve concentrator 708 in the lampshade, which can focus the light on the surface of the conical body reflector 707 below; The plane is arranged and combined at a specific angle, which can reflect the light to the predetermined irradiation area to achieve the effect of uniform distribution of brightness in the illuminated area; and the conical reflector 707 located directly under the light source makes part of the light reflected twice or more and then Projected to the area to be illuminated, so that the light can be more precisely controlled to hit a specific area.

In addition, the light-transmitting plate 706 is an illuminating mask, and a certain surface of the light-transmitting plate has several gratings arranged at different angles. If it is greater than the critical angle of the transparent object, the light is totally reflected, which can avoid the glare effect caused by the eyes looking directly at the bright spot of the light source at any angle, and almost does not weaken the brightness of the light transmitted through the transparent object, so as to achieve energy saving effect .

In this way, the present invention can clearly achieve the energy-saving effect of uniform brightness in the lighting area and the least brightness loss, and can avoid the glare phenomenon caused by the bright light of the illuminant 704 .

Please refer to Fig. 7, which is the second embodiment of the present invention. A perforation 602 is provided on the cover body of the lampshade main body 601, and a lamp holder 603 is placed inside, and a luminous body 604 is placed on the lamp holder 603 to obtain power and emit light. A parabolic curve or a partial elliptic curve concentrator 608, which is shown as a parabolic curve in this illustration, has a perforated hole at the top for the illuminant 604 fixed in the lampshade main body 601 to pass through. A light distribution curve reflector 605 is fixed in the lampshade main body 601 and connected with the condenser 608 . A light-transmitting plate 606 is movable under the lampshade main body 601 , and a cone-shaped reflector 607 is fixed inside the light-transmitting plate, and its conical top faces the illuminant 604 .

The parabolic curve or partial elliptic curve concentrator 608 and the light distribution curve reflector 605 are designed in the same way as in the first embodiment, and the lampshade made in this way can indeed achieve the energy-saving effect of uniform brightness in the illuminated area and minimum brightness loss.

Claims (6)

1. A light distribution energy-saving lampshade, comprising: A main body of the lampshade, at least one lamp socket connected to the power cord is installed in the main body of the lampshade; More than one luminous body that obtains power through the above-mentioned lamp holder and emits light is installed on the lamp holder in the main body of the above-mentioned lampshade; it is characterized in that: A condensing cover, the top of which is provided with a perforation for the above-mentioned luminous body to pass through; A reflector, which is fixedly arranged in the main body of the lampshade and closely connected with the condenser cover, and its inner surface is composed of several planes connected to form a light distribution curve. The size and angle of each plane should be the The included angle formed by the reflected light reflected from the incident light to a specific block, according to the law of reflection "incident angle = reflection angle" and the principle of "normal line perpendicular to the plane", set the relative angle and size of the plane and the horizontal plane; A light-transmitting plate is arranged at the light-emitting end of the main body of the above-mentioned lampshade; and A cone-shaped reflector is arranged on the inner side of the above-mentioned light-transmitting plate, and the top of the cone faces the center of the above-mentioned illuminant; The condensing cover condenses the light of the illuminant on the surface of the above-mentioned conical reflector below, and then reflects the light to the above-mentioned reflector; the above-mentioned light distribution curve reflector reflects the light to the predetermined irradiation area to reach the lighting area The effect of uniform distribution of brightness; and the above-mentioned conical reflector makes part of the light reflected more than twice and then projected to the block to be illuminated, so as to control the light to irradiate a specific block. 2. A light distribution energy-saving lampshade according to claim 1, characterized in that: the light-transmitting plate has a digital critical angle, and at least one side is a digital grating, and the gap, angle, specification, and shape of the light-transmitting plate are based on the light-transmitting plate The principle design of the optical critical angle of the material controls the incident angle of the direct incident light of the above-mentioned luminous body to be greater than the critical angle to be totally reflected without directly penetrating the light-transmitting plate, and the incident angle of other light that is not directly incident by the above-mentioned luminous body is smaller than the critical angle And directly penetrate the light-transmitting plate. 3. A light distribution energy-saving lampshade according to claim 2, wherein the light-transmitting plate is a circular ring-shaped grating. 4. A light distribution energy-saving lampshade according to claim 2, wherein the light-transmitting plate is a square strip grating. 5. A light-distribution energy-saving lampshade according to claim 1, characterized in that: the condensing shield is in the shape of a parabolic curve. 6. A light distribution energy-saving lampshade according to claim 1, characterized in that: the condensing shade is partly elliptical.

Images