KR20130055812A

KR20130055812A - Energy-saving lighting device with even distribution of light

Info

Publication number: KR20130055812A
Application number: KR1020110121433A
Authority: KR
Inventors: 핑-한 츄앙
Original assignee: 세돈 테크놀로지 코., 엘티디.
Priority date: 2011-11-21
Filing date: 2011-11-21
Publication date: 2013-05-29

Abstract

The energy saving lighting device includes a lamp shade body, a light transmitting plate positioned on the lower surface of the lamp shade body, a nonlinear reflector and a parabolic reflector having a light distribution curve mounted on the lamp shade body, a light emitting device mounted in the lamp shade body, and a light emitting device It includes a conical reflector disposed within the lampshade body beneath it. When the light emitting device is electrically connected to emit light, the light rays are distributed evenly within the illuminated area without causing Gaussian distribution to save energy and prevent glare.

Description

ENERGY-SAVING LIGHTING DEVICE WITH EVEN DISTRIBUTION OF LIGHT}

FIELD OF THE INVENTION The present invention relates to lamp shades for lamps, in particular, being environmentally friendly and energy-saving, which can be used in home, factory and street applications, designed with attention to light reflection, refracting and critical angle principles, minimizing light loss, and lighting areas The present invention relates to an energy-saving lighting device that ensures an even distribution of light and avoids glare.

Standard lighting fixtures include two types, one for indoor use and the other for outdoor use. 1A illustrates a typical indoor lighting fixture, which includes a light source 102 and an open opaque lampshade 101 provided on top of the light source 102. The open opaque lampshade 101 has a reflective inner surface 103. To avoid eye glare, the surface of the light source is generally translucent. Standard outdoor luminaires have a totally closed lampshade (see FIG. 1B) where the cover through which the bottom light is transmitted is translucent to prevent glare. However, conventional lighting fixtures, which are either open lampshades or totally closed lampshades, have the disadvantage of a large loss of illumination and a concentration of light directly under the light source.

Also, conventional lighting devices generally use a simple geometric curved reflector to reflect light towards a given illumination area. Since the illuminance of the illuminated area is inversely proportional to the square of the distance of the light source, the illuminance of the surface erected by a conventional lighting device exhibits a Gaussian distribution, that is, the illuminance of an area relatively close to the light source is relatively high and relative from the tube. As a result, the illuminance of distant areas is relatively low. One disadvantage of the presence of a Gaussian distribution is the uneven roughness of the illuminated area. Another disadvantage of the presence of a Gaussian distribution is that the intensity of the light source must be increased to achieve a minimum illuminance of the area away from the light source leading to unnecessary consumption of electrical energy.

Contrast glare is one part of the visual field that is much brighter than the other. This can make your eyes feel tired and tired easily or affect your visual health.

Since ancient times, mankind has become accustomed to using sunlight for lighting. Since the sun is far enough from the earth, the illuminance is evenly distributed. In order to eliminate glare when using a conventional lighting device, people may take the following measures.

1. Increase the distance between the light source and the area to be illuminated, but such measures do not run under the concept of energy saving and environmental protection, since this leads to waste of energy.

2. To disperse the generated light, use translucent glass in the light generating area or coat a fluorescent material on the light generating area. However, this measure consumes a lot of energy and does not eliminate the problem of Gaussian distribution.

3. Install a light shielding plate in front of the light source to block direct sunlight. Although the use of light shielding means to achieve continuous shielding of light can achieve even illumination, this measure consumes about 3 to 10 times or more more energy.

The uneven lighting of the streetlights allows the vehicle driver to feel the space bright at one point and dark next to the zebra stripes. The vehicle driver is easily tired under such circumstances. Uneven illuminance for commercial lighting cannot represent the color characteristics of the displayed goods, which affects the sale of the goods. When working in an uneven light environment, the operator can make false judgments that affect the quality of the product. Therefore, there is a need to design lampshades for lighting devices that enable an even distribution of light.

The present invention is accomplished under visible circumstances. It is a primary object of the present invention to provide an energy saving lighting device that provides an even distribution of light, eliminating the disadvantages of conventional design.

In order to achieve the object of the present invention, the energy-saving lighting device is a lamp shade body having a lamp holder electrically connected to the power supply means therein, a light emitting device mounted in the lamp holder for emitting light, a light emitting device Parabolic reflector having a through hole in the upper surface to allow the light to pass through and converting a part of the light emitted by the light emitting device into the parallel rays extending downward, the light transmission mounted on the illumination face of the lamp shade body Plate, a conical reflector fixedly mounted on the inner face of the light transmitting plate, having a vertex aimed at the center of the light emitting device, and adapted to convert the downwardly extending parallel rays into horizontally extending rays, and a lampshade With a number of facets fixedly mounted to the body and adjacent to the parabolic reflector and connected to each other at the inner face And a reflector having a non-linear distribution curve. The size and angle of each facet is calculated by the light reflection principle and predicted by the angle included between the angle of incidence of the parallel rays extending horizontally and the light reflected by the individual facets towards the predetermined illumination block. do.

Some of the light emitted by the light emitting device is projected directly onto the predetermined illumination block and some are reflected or refracted into the predetermined illumination block by parabolic reflectors, conical reflectors and nonlinear reflectors. The predetermined lighting block to be illuminated is equally divided into a number of sub-blocks, in each sub-block luminous flux of all sub-blocks of direct light emitted by the light-emitting device and emitted by the light-emitting device and each The light mainly reflected by the conical reflector in the lower block is calculated. The light rays emitted by the light emitting device and secondly refracted by the parabolic reflector and the conical reflector towards the facet of the nonlinear reflector are placed on the nonlinear reflector on the predetermined lower block of the predetermined lighting block to create an even luminous flux of all lower blocks. Reflected by the facet of, to achieve an even distribution of light in the predetermined illumination block.

To eliminate the problem of uneven distribution of light in a conventional design, where the area immediately below the light source is relatively bright and the area farther away from the light source is relatively dark, the energy-saving lighting device uses a parabolic reflector in the lampshade body to form a conical reflector. Having a plurality of facets arranged at a predetermined angle to collect light at the bottom, form a light distribution curve to reflect light in the predetermined lighting block, and cause some rays to be secondarily refracted in the predetermined lighting block Nonlinear reflectors achieve accurate light control and uniform light distribution in predetermined lighting blocks.

The energy saving lighting device according to the present invention achieves an even distribution of light in a predetermined lighting block, the problem of uneven distribution of light of a conventional design where the area immediately below the light source is relatively bright and the area relatively far from the light source is relatively dark. Solve the problem.

1A is a schematic representation of an open lampshade according to the prior art.
1B is a schematic diagram of a totally closed lampshade according to the prior art.
2 is a schematic cross-sectional view of an energy saving lighting device according to the present invention.
3 is an enlarged view of a portion of an energy saving lighting device according to the present invention illustrating the light distribution curve of a nonlinear reflector.
4 is a schematic diagram illustrating the light refraction function of a parabolic reflector of an energy saving lighting device according to the present invention.
Fig. 5 is a schematic diagram illustrating the light reflection function of the conical reflecting device of the energy saving lighting device according to the present invention.
6 is a schematic diagram illustrating the light reflection function of the nonlinear reflector of the energy saving lighting apparatus according to the present invention.
Fig. 7 is a schematic diagram illustrating an optical path of direct sunlight from the light emitting device of the energy saving lighting device according to the present invention.
8 is a schematic diagram illustrating an optical path of primary refractive light rays in accordance with the present invention.
9 is a schematic diagram (I) illustrating illuminance measurements of primary refractive and direct sunlight in accordance with the present invention.
Fig. 10 is a schematic diagram (II) illustrating illuminance measurements of primary refractive light and direct sunlight in accordance with the present invention.
11 is an illuminance distribution curve of the primary refractive ray and the direct ray according to the present invention.
12 is a schematic diagram illustrating illuminance measurement of secondary refractive light beams in accordance with the present invention.
Fig. 13 is an illuminance distribution curve of secondary refractive light beams according to the present invention.
Figure 14 illustrates the calculation of the light distribution curve of the annular surface illuminated by the nonlinear reflector according to the present invention.
Figure 15 is a schematic diagram illustrating the arrangement of the refractive facet unit according to the present invention.
Figure 16 is a schematic diagram illustrating an illuminated surface that is annularly linked in accordance with the present invention.
Figure 17 is a schematic diagram illustrating the connection of the center of the refractive facet unit according to the invention.
18 is a schematic diagram illustrating a squarely illuminated surface according to the present invention.
Figure 19 is a schematic diagram illustrating a strangely rectangular illuminated surface according to the present invention.
20 is a schematic diagram illustrating the projection of light output of a rectangular lampshade body according to the present invention.
Figure 21 is a schematic diagram illustrating the projection of the light output of a trapezoidal lampshade according to the present invention.
Figure 22 is a schematic diagram illustrating the arrangement of a nonlinear reflector at one corner of an illuminated surface according to the present invention.
Figure 23 is a schematic diagram illustrating the connection of a facet of a square loop type nonlinear reflector.
Figure 24 is a flowchart illustrating the calculation of the light distribution curve of the nonlinear reflector in accordance with the present invention.

2, the energy saving lighting device 200 according to the present invention includes a lamp shade body 201. The lamp shade body 201 includes an upper transmission hole 202 mounted therein with a lamp holder 203 for fixing the light emitting device 204 that emits light when electrically connected.

The lampshade body 201 includes a parabolic reflector 208 consisting of an upper portion over an imaginary line 209. Parabolic reflector 208 includes a transmission hole 202 through which the light emitting device 204 can pass.

The lampshade body 201 includes a nonlinear reflector 205 consisting of a lower portion below the imaginary line 209. Nonlinear reflector 205 is disposed inside lampshade body 201 and abuts parabolic reflector 208.

In addition, the light transmitting plate 206 is adhesively covered on the lower surface of the lamp shade body 201 in the illumination region. The reflector cone 207 is fixedly mounted to the inner surface of the light transmitting plate 206 in the lamp shade body 201 at the position where the vertex of the reflector cone 207 is aimed at the light emitting device 204, and the parabolic reflector ( The 208 reflector allows the reflector cone 207 to reflect light aggregated onto the nonlinear reflector 205 that reflects light refracted from the reflector cone 207 toward the illumination region to achieve a desired light distribution. On the cone 207, the light emitted from the light emitting device 204 is reflected.

The non-linear reflector 205 is composed of a plurality of facets, the size and angle of each facet of the non-linear reflector 205 is calculated based on the light reflection principle, and reflected by each facet facing a specific illumination block. It is expected by the narrow angle between the light and the incident light.

3 is an enlarged view of a portion 303 of the nonlinear reflector 205. When the incident light 307 in the predetermined direction touches one facet 305 and is reflected by the facet 305 onto the predetermined illumination block 314, the incident angle 307 and the reflected light 308 become narrow angles ( f, 317). According to the reflection principle, it can be obtained by narrow angle (f, 317) ÷ 2 = angle of incidence (a, 315) = reflection angle (b, 316), and thus an accurate angle of the normal line 313 is obtained. Since the normal 313 is perpendicular to the facet 315, the angles e2 and 312 with respect to the horizontal line 311 are also obtained.

In simple terms, the angle of incidence 307 remains parallel to the horizontal line 311 and the narrow angle 307 is equal to the angles e2 and 312. Angle (e1, 318) = 90-angle-angle of incidence (a, 315) = 90 ° -f (317) / 2.

Referring to Fig. 4, the light emitting device 204 is disposed at the focal point of the parabolic reflector 208 so that the parabolic reflector 208 converts the incident light rays into parallel rays extending downward. Referring to FIG. 5, the parallel light rays reflected by the parabolic reflector 208 and extended downward are converted into parallel light rays extending horizontally by the reflector cone 207. With reference to FIG. 6, the horizontal incident light rays reaching the internal light distribution curve of the nonlinear reflector 206 are reflected by the nonlinear reflector 205 toward the predetermined illumination block 314.

Referring to FIGS. 7 and 8, the light emitting device 204 is directed towards the direct light beam and the conical reflector 207 which are emitted by the light emitting device 204 and directly contact the predetermined illumination block 314 (see FIG. 7). The light rays emitted by and initially refracted by the conical reflector 207 on the predetermined illumination block 314 do not pass through the parabolic reflector 208 or the reflector cone 207, and emit light with the predetermined illumination block 314. The distance between each light receiving point of the device 204 is not equal, and the illuminance is inversely proportional to the square of the transmission, which is difficult to initiate a function of this curve by linear equations. Thus, the present invention adopts a computer program for dividing this curve into a plurality of segments and calculating the refractive angle of each segment in accordance with the illumination requirement for each individual zone in this predetermined illumination block 314.

The order of calculation is described below.

First, the illuminance distribution of the direct ray and the primary refracted ray is measured. As shown in Figs. 9 and 10, prior to mounting the non-linear reflector 205 in the energy saving lighting device 200, the light beam is refracted by the parabolic reflector 208, and the conical reflector 207 is a predetermined block ( 314 is dispersed in different directions. If direct and primary refracted rays affect the light distribution in further calculations, all light receiving points of the predetermined block 314 should be measured and recorded at this time.

Referring to Fig. 11, in this example, the area of the predetermined illumination block 314 is 10M x 10M, the distance between the light emitting device 314 and the bottom is 10M, and the parabolic focus of the parabolic reflector 208 is 25mm. And the parabolic opening of the parabolic reflector 208 is 166 mm. To facilitate the calculation, this curve is converted to a single real factor function close to the curve. This function is called DIRECT (x) below.

After calculation through optical simulation software, the luminous flux of direct sunlight and primary refractive light is about 16.5% of the light source. This light beam is called LM1 hereafter.

Next, the illuminance distribution of the second refracted light beam is measured. At this time, the illuminance measurement plate 401 is used to measure the intensity of the second refracted light beam. The greater the number of points measured, the higher the accuracy of the measurement. Figure 13 illustrates a secondary refractive illuminance distribution curve. For ease of calculation, this curve is converted to a single real factor function close to the curve. This function is called INDIRECT (x) below. In the example shown in Fig. 9, the luminous flux of the second refracted light beam after calculation through the optical simulation software is about 72% of the light source. This luminous flux is called LM2 below.

In this example, the total luminous flux, primary refractive beam and secondary refractive beam of direct sunlight is 88.5%. This total luminous flux does not reach exactly 100% because the refractive index of the refractive surface is 97% and the light source is not the ideal point source in the simulation. Most of the light loss occurs in the action of a parabolic reflector to reflect some of the light rays on the light emitting device 204. The light reflected back on the light emitting device 204 is ineffective light. Indeed, the use of translucent or sandy glass to avoid glare in conventional lighting fixtures causes more light energy loss than the consumption of the present invention.

Next, the light distribution curve of the annular surface 402 illuminated by the nonlinear reflector 205 is calculated. As illustrated in Fig. 14, when the predetermined lighting block 314 is an annularly illuminated surface 402, the calculation is made according to the following steps.

1. Divide the area of the surface 402 illuminated annularly equally into a number of blocks, for example five blocks A1, A2, A3, A4 and A5. The number of divided blocks is higher than the average roughness. In this example, the annular illumination surface is divided into five blocks. In practice, it may be divided into tens of thousands of blocks or millions of blocks. Because of the high speed of existing high-end computers, running through computer software programs does not require much execution time. For ease of explanation, the number of blocks to be divided is called N.

2. Divide the circumference equally into a number of parts, for example by dividing it into 100 parts as shown in FIG. 14, each part defining narrow angle Δθ = 3.6 °. In fact, the circumference may be equally divided into tens or millions of parts.

3. Divide the luminous flux of the secondary refraction light into N portions. After estimating the total DIRECT (N block) from the N part, the luminous flux of the secondary refractive light beam to be distributed on the block is obtained as LMS.

Thus, the following equation 1 is obtained.

LMS [N] = LM2 / N-LM1 [N] ............... 1

[Note: In Equation 1, LM1 [N] is the total luminous flux of the first refractive ray and the direct ray of the Nth block calculated after being put into the integral function of DIRECT (Nth block).

4. As shown in Fig. 15, since the intensity of the secondary refracted light beam is not constant, the length Δxy extending from the vertex of the cone reflector 207 is calculated as the integral INDIRECT (x) to reach A [N]. The illuminance of the light is made equal to LMS [N].

5. In FIG. 16, the refractive facet unit allows the secondary refractive light to reach [Delta] a in FIG. Since the Δθ of the annularly illuminated surface is the same as the Δd of the refractive facet unit, it will be easy to understand that the contour will appear later when compared with the rectangularly illuminated surface.

6. Connect all refractive facet units to form a secondary refractive surface A [N].

7. Repeat steps 4-6 until the Nth, ending the light distribution curve of the light refracted by the nonlinear reflector on the annularly illuminated surface.

8. Light redundancy or leakage may occur while connecting all articulated facet units. In practical experiments, values approaching zero are introduced for Δd and Δｙ. By simply lifting the center of all refractive facet units shown in FIG. 17 to connect using digital filters IIR, FIR, Bezier, a non-linear distribution curve of similar luminosity can be obtained.

Since conventional lighting systems apply the concept of an array of square arrays, the use of an annular nonlinear reflector results in the occurrence of overlapping light emitting areas or dark areas. Thus, a rectangularly illuminated surface 403 is needed. If the predetermined illumination block 314 is a rectangularly illuminated surface 403 as shown in Fig. 18, the calculation of the light distribution curve of the rectangular surface 403 illuminated by the nonlinear reflector 205 will be performed in the next step. Is calculated accordingly.

1. Divide the area of the surface 403 illuminated with squares equally into a number of blocks, for example five blocks A1, A2, A3, A4 and A5, where A1 = A2 = A3 = A4 = A5.

2. Divide the rectangle equally into multiple parts, for example, divide it into 100 parts (k parts) as shown in Fig. 18, each part defining narrow angle Δθ = 3.6 °.

4. As shown in Fig. 15, because the intensity of the secondary refracted light beam is not constant, the length DELTA y extending from the vertex of the cone reflector 207 is calculated by the integral INDIRECT (Δ y y) to reach A [N]. The illuminance of the light is made equal to LMS [N].

5. Referring to the description of the example of the annularly illuminated surface shown in Fig. 15, Δa of the rectangularly illuminated surfaces are not all the same. As illustrated in Fig. 18,? A1,? A26,? 36, and the like are not the same. In order to achieve an even distribution of light, Δd can be adjusted relative to Δa as follows.

ㅿ ｄ [k] = 360 °

Δa [k] / A [N] .. 2

[Note: k in Equation 2 is the number of parts divided from a rectangle.]

6. Connect all refractive facet units to form a secondary refractive surface a [N]. Unlike the annularly illuminated surface, the Δd of the rectangularly illuminated surface is not constant.

7. Repeat steps 4-6 until the Nth, ending the light distribution curve of the light refracted by the nonlinear reflector on the squarely illuminated surface.

When the predetermined illumination block 314 is the surface of the unusually rectangular illuminated surface 404, the calculation of the light distribution curve of the unusually illuminated surface illuminated by the nonlinear reflector 205 is described below. As shown in Fig. 19, the light source of the lighting device, such as a desk lamp or a street lamp, may not be disposed in the center of the surface to be illuminated. The calculation of the nonlinear reflector for this unique rectangular illuminated surface (light receiving surface) is similar to the calculation of the light distribution curve of the rectangular surface 403 illuminated by the nonlinear reflector 205. In order to facilitate the manufacture of the nonlinear reflector, the ratio between the upper region and the lower region with respect to the light source is better than a constant value in the division of the region a [k] (see Fig. 19). In this way, the connection of the refractive facet unit shows a good streamline,

The calculation of the light distribution curve of the nonlinear reflector 205 in which the light emitting device 204 is not within the range of the light receiving surface is described below.

In some lighting devices, the light emitting device 204 is not within a rectangular range (such as a projection lamp). All refractive facet units deflect light rays toward one and the same side. In this case, an expansion plate 405 is added as shown in FIG. 20 so that the light beam can be projected to the left.

The calculation of the light distribution curve of the nonlinear reflector 205 for use in an energy saving lighting device using the light emitting device 204 having an elevation is described below.

In some lighting devices (such as street lights), the projection angle of the light emitting device 204 may not maintain a parallel relationship with the illuminated surface. For elevation angles, as shown in FIG. 21, it can be converted into a trapezoidal light receiving surface 406. As shown in FIG. The calculation of the light distribution curve of the nonlinear reflector for use in this example is the same as the calculation of the illumination surface (light receiving surface 404) with the unusual squares described above.

The calculation of the light distribution curve of the nonlinear reflector 205 for use in an energy saving lighting device to be mounted in the corner area is described below.

In some arrays. The light emitting device 204 is mounted in a corner area with respect to the illuminated surface 407 (to reduce the number of street lamp posts, multiple light emitting devices can be mounted on one single lamp post). In this case, as shown in Fig. 22, the nonlinear reflector is unique not only in the vertical but also in the horizontal. The calculation of the light distribution curves involves the calculation of the light distribution curves of the nonlinear reflectors for surfaces illuminated with unusual squares, the calculation of the light distribution curves of the nonlinear reflectors where the light emitting devices are not within the range of the light receiving surface, and the light emitting devices having elevation angles. It is intended to combine the calculation of the light distribution curve of a nonlinear reflector for use in an energy saving lighting device used.

Infinite connections to the predetermined shape design are described below.

When manufacturing a lighting device, the nonlinear reflector 205 may be configured in a rectangular, polygonal or oval shape to meet the surroundings or to meet certain considerations. The aforementioned annular connection arrangement can be modified, for example, into a rectangular connection arrangement as shown in FIG. The calculation of the different nonlinear reflectors does not have to take into account the complex calculation of the surface area of the refractive facet unit. This calculation is made easier by dividing the entire surface area equally and counting the proportion of the surface area of the refractive facet unit.

s [k] = (m [N] / k) / Δa [k] ........................ 3

[Note: s [k] in Equation 3 is the ratio of the surface area of the refractive facet unit after equal division of the entire surface area.]

[Note: m [N] is the entire surface area. (For example, the area surrounded by the second frame line and the third frame line is m [2].)]

This calculation is equivalent to the calculation of a nonlinear reflector for a surface illuminated with squares. When Δd [k] is calculated, it is increased by s [k].

Δd [k] = s [k]

360 °

Δa [k] / A [N] .. 4

24 and 24a illustrate the order of calculation of the light distribution curve of the nonlinear reflector 25. FIG. As illustrated, the present invention employs a computer software program for dividing a curve into segments for a predetermined illumination block 314 and for calculating the angle of refraction of each segment of the curve to incorporate the facet coupling of the nonlinear reflector 205. Acquire a light distribution curve.

Although specific examples of the invention have been described in detail for purposes of illustration, various modifications and improvements can be made within the spirit and scope of the invention. Accordingly, the invention is not limited by the claims appended hereto.

Claims

A lamp shade body having a lamp holder electrically connected to the power supply means therein;
A light emitting device installed in the lamp holder for emitting light;
A parabolic reflector configured to convert a portion of the light rays emitted by the light emitting device into parallel rays extending downwardly, the parabolic reflector having a through hole in an upper surface to pass the light emitting device;
A light transmitting plate mounted to an illumination surface of the lamp shade body;
A conical reflector fixedly mounted to an inner surface of the light transmitting plate, wherein the reflector cone has a vertex toward the center of the light emitting device and is configured to convert the downwardly extending parallel light rays into horizontally extending light rays. reflector;
A non-linear reflector fixedly mounted within the lampshade body and adjacent to the parabolic reflector, the non-linear reflector comprising a plurality of facets connected to each other on an inner surface of the non-linear reflector and constructing a light distribution curve, the size of each facet And the angle comprises a nonlinear reflector calculated by the light reflecting principle and the expected narrow angle between the angle of incidence of the horizontally extending parallel rays and the light refracted by each facet towards a predetermined illumination block,
Light emitted by the light emitting device is partly projected directly onto the predetermined illumination block, and part is reflected or refracted by the parabolic reflector, the conical reflector and the nonlinear reflector to the predetermined illumination block;
Divide the predetermined lighting block to be illuminated equally into a plurality of sub-blocks, the direct light emitted by the light emitting device on each sub-block and the conical reflector emitted by the light emitting device and on each sub-block Calculate luminous flux of all said sub-blocks of primary refracted light by;
Light rays emitted by the light emitting device and second refracted by the parabolic reflector and the conical reflector toward the facet of the nonlinear reflector are on a predetermined subblock of the predetermined illumination block by the facet of the nonlinear reflector. Reflected to create an even luminous flux of all the sub-blocks, to achieve an even light distribution of the predetermined block
Energy-saving lighting device.

The method of claim 1,
The predetermined lighting block is an annular light receiving surface
Energy-saving lighting device.

The method of claim 1,
The predetermined lighting block is a rectangular light receiving surface
Energy-saving lighting device.

The method of claim 1,
The light emitting device is beyond the range of the rectangular light receiving surface;
The facet of the linear reflector refracts incident light towards one same face;
An extension plate is attached to the opposite side of the linear reflector to allow light to be projected toward one and the same side
Energy-saving lighting device.

The method of claim 1,
The predetermined illumination block is an unusual rectangular light receiving surface
Energy-saving lighting device.

The method of claim 5, wherein
The light emitting device has an elevation so that the predetermined lighting block is converted into a trapezoidal light receiving surface.
Energy-saving lighting device.

The method of claim 1,
The light emitting device is arranged in a corner region with respect to the predetermined lighting block in an unusual manner in horizontal and vertical directions.
Energy-saving lighting device.

The method of claim 1,
The nonlinear reflector is rectangular in shape
Energy-saving lighting device.

The method of claim 1,
The nonlinear reflector is polygonal in shape
Energy-saving lighting device.

The method of claim 1,
The nonlinear reflector is oval shaped
Energy-saving lighting device.