CN207455458U - Diffuser for light pipe lighting system and the lighting system using the diffuser - Google Patents

Abstract

A kind of light pipe the utility model discloses light pipe diffuser and using the diffuser；Including the first refractive body and the second refractive body, the reflective surface of the first refractive body is towards light pipe light-emitting window, and at least one reflective surface of the second refractive body is towards irradiated area.First refractive body described in the utility model, function is that the light of light pipe output is reflected on the second refractive body, so as to which the light that a large portion can be directly fallen in light pipe light-emitting window face direction originally is transferred to elsewhere.So as to enhance the simultaneously balanced light intensity that distant region is exported apart from light pipe.It can be arranged as required to more refractive bodies.Above-mentioned smooth transfer process ensure that below light pipe and the illumination of surrounding area is more uniform, expands range of exposures, improves light pipe illumination efficiency, reduce cost.

Description

Diffuser for light pipe lighting system and the lighting system using the diffuser

Technical field

A kind of lighting system the present invention relates to diffuser for light pipe lighting system and using the diffuser.

Background technology

Day light guide tube lighting system, is a set of acquisition natural light, and is transferred to interior through light pipe, carries out natural illumination Bright lighting system.Usually it is made of dome skylight, light pipe and scattering sheet.Due to energy-saving and environmental protection, light pipe lighting system is used It has been used widely in architectural lighting illumination.

When light pipe is applied to architecture indoor illumination, national standard, professional standard or building requirements can be for The brightness value of room lighting has certain requirement.Such as basis《Standard for lighting design of buildings》GB50034-2013, it is desirable that subway Subway concourse (top grade) illuminance standard level is 200 (lux)；And then it is defined as 30lux corresponding to the illuminance standard level of underground parking. Light pipe lighting system need to reach certain standard when for room lighting, in the brightness value of unit area.Unit light pipe The lighting area for meeting brightness value requirement provided using natural light is bigger, and lighting efficiency is higher.

It is the region that luminous flux is concentrated due in light pipe lighting system, immediately below light pipe light-emitting window, brightness herein Maximum, the luminous flux, that is, brightness in other regions is successively decreased rapidly with the increase with light-emitting window distance, therefore meets brightness value mark Accurate illumination region is limited.

Further, since the period may include sky scattering light and periods of direct sunlight light to outdoor natural light in the daytime, natural light Intensity receives directly affecting for weather condition.Such as in the case of fine, direct sunlight ingredient is big, and light-emitting window is very bright, And at the cloudy day, direct light ingredient is zero, and uniform sky scattering light is then conducted into interior by light pipe.For another example, it is sunny on high The meridian hour, immediately below indoor only light pipe outlet direct light can and regional area brightness improve, and other regions are not It is benefited, so the indoor lighting area for meeting brightness value standard does not carry significantly due to weather is fine brings the raising of input power It rises, it is necessary to which the region for starting lamp lighting is not reduced, the lighting power of light pipe output is not utilized effectively, unit area Light pipe daylighting illumination efficiency is not high in domain.

It by taking the system of existing 530mm diameters as an example, is influenced by outdoor weather situation, although it actually can be in supply chamber The power of illumination is 200-1000 watts, but in order to meet the requirement that building brightness value standard reaches steady illumination, in reality It is used in by vast Architecture Design Institute according to 200 watts of lighting power, it is caused to be higher than 200 watts or more of power quilt Ignore.Specifically, in the light pipe system of 530mm diameters, the power being capable of providing using sky scattering light is 200-400 Watt, and it is 0-600 watts using the lighting power that periods of direct sunlight light provides, and is altogether 200-1000 watts.

It is existing for the actual illumination area of the widened light pipe lighting system in the case where meeting daylighting brightness value requirement There is technology generally to take the method that scattering sheet is set in light pipe exit.

Fig. 1 is the example for the light pipe lighting system that underground parking is mounted on according to the prior art.Outdoor sky dissipates It penetrates light and periods of direct sunlight light and light pipe 1 is entered by dome skylight 2, light pipe 1 enters from outdoor through overburden layer in rear chamber, by light Line imports interior, a discoid scattering sheet 6 is set at the light-emitting window 7 of light pipe 1, which, which uses, has certain mist The light transmissive material of degree is, for example, that polymethyl methacrylate (PMMA) or polyethylene (PE) and makrolon (PC) are made, incident Light by this scattering sheet, reduce the brightness immediately below light-emitting window, while so that the light at light-emitting window is rolled over by scattering sheet 6 It penetrates so that light intensity is relatively uniform in the irradiation area in certain areal extent, indoor so as to meet in the areal extent The standard of brightness value reaches certain even light effect.But it is clear that simply luminous flux is carried out in original light area uniform Distribution is not that light area expands.

Fig. 2 shows the light exported with the light pipe lighting system of the corresponding prior arts of Fig. 1 under standard sky Illumination curve.It is under standard sky that the illumination curve, which is shown, that is, in the case of cloudy sky scattering light, illumination is During 20000lux, the state of the light output of light pipe.Fig. 2 longitudinal axis is brightness value, and unit lux, transverse axis is the distance with light-emitting window, Unit is millimeter, and 0 represents light-emitting window wherein in transverse axis.Figure it is seen that the brightness value of light-emitting window is 180lux, with light extraction Outward radial brightness value reduces rapidly centered on mouthful, is very fast decayed in the range of apart from light extraction port radius for 2500mm 30lux.As it can be seen that the system is relatively very bright at light-emitting window, and it can not meet building intraoral illumination in the range of minor radius Illumination requirement.

In addition, the light pipe lighting system of the prior art shown in FIG. 1 includes sky scattering light and day in transmission daylight Light direct beam light, but be not used effectively.By taking the system of 530mm diameters as an example, for the requirement of the brightness value of building, one As be designed to be used according to 200 watts of lighting power.But the light pipe lighting system can be actual in fair weather Indoor lighting power is supplied as 200-1000 watts, but in existing light pipe lighting system, 200 are higher than in fair weather Watt or more power be ignored, cause lighting efficiency in lighting system not high.

The characteristic of sky scattering light and periods of direct sunlight light is completely different.Existing light pipe can carry out sky scattering light Transmission, but ignore completely for periods of direct sunlight light.The characteristic of skylight is, is uniform and stable scattering light, light is in sky Between the intensity of middle all directions be identical.The characteristic of direct sunlight is its high directivity.Existing light pipe system can Suitable for uniformly scattering light, but can not the strong direct light of directional greatly utilize.

Fig. 3 shows photograph of the light exported with the light pipe system of the corresponding prior arts of Fig. 1 under Clear Days Summer It writes music line.When the outdoor illumination of illumination curve display is 80000lux, the state of the light output of the light pipe of a prior art. Fig. 3 longitudinal axis embodies for the logarithmic scale of brightness value, and unit lux, transverse axis is the distance with light-emitting window, and unit is millimeter, wherein horizontal 0 goes out to represent light-emitting window in axis.From figure 3, it can be seen that the brightness value of light-emitting window is close to 360lux, but centered on light-emitting window Outward radial brightness value reduces rapidly, and 30lux is very fast decayed in the range of apart from light extraction port radius for 5500mm.As it can be seen that The system is excessively bright at light-emitting window, causes waste and glare, and can not meet the photograph of building intraoral illumination in minor radius Degree requires.

In short, the light pipe system of the prior art can not solve to significantly improve the lighting area of light pipe system so as to carry The problem of high lighting efficiency, does not account for yet and improves daylighting effect using the lighting conditions of light pipe system under the conditions of different weather Rate.

The content of the invention

In order to solve the above-mentioned technical problem, in the case where meeting the certain brightness value requirement of building, it is significantly expanded light pipe The actual illumination area of system improves the utilization rate of daylight, and so as to improve lighting efficiency, the present invention provides a kind of light pipes to dissipate Light device：Including

First refractive body, the reflective surface of first refractive body is towards the light pipe light-emitting window.In this way, it can incite somebody to action suitable The light that a big part can directly fall in light pipe light-emitting window face direction originally is transferred to elsewhere, leads to the light immediately below light-emitting window Amount is reduced, luminance-reduction；And the luminous flux of neighboring area increases, brightness improves；Play the work for reducing simultaneously this balanced direction light intensity With, and expand lighting area；With

Second refractive body, described at least one reflective surface of second refractive body is towards the first refractive body, wherein described first Refractive body is arranged on light reflection to second refractive body for being emitted quite a few from light pipe light-emitting window, and by institute It states the second refractive body and reflexes to required illuminated or illumination region.So as to which the concentration luminous flux immediately below light pipe be transferred To at a distance, effectively expand irradiated area, improve lighting efficiency.

Preferably, which further includes the 3rd anti-body, the 3rd refractive body at least one reflective surface, and the 3rd Refractive body is between the first refractive body and the second refractive body.Light from light pipe light-emitting window can be anti-the 3rd with partial illumination In body of light, and the region that needs are illuminated or illuminate is turned into, so as to further by the concentration luminous flux immediately below light pipe It is transferred at a distance, effectively expands irradiated area, improve lighting efficiency.

Preferably, the form of first refractive body, the second refractive body and/or the 3rd refractive body and/or position are set It is adjustable.Form and/or position between each refractive body are dissipated according to sky in light pipe is entered in the case of different weather Light and periods of direct sunlight light are penetrated, and is adjusted.For example, when fine, change the position and orientation of the 3rd refractive body, so as to Light at light-emitting window can be diverted to the second refractive body by the 3rd refractive body, farther so as to which the introducing of periods of direct sunlight light is separated out optical port Region, realize the irradiated area of bigger, improve lighting efficiency.And at the cloudy day, then make the 3rd refractive body close to the second refractive body, Enable first and the 3rd refractive body sky scattering light is preferably diverted to interior.

Preferably, which further includes the dust-proof face of light transmission, so that whole system is made to be beneficial to safeguard.

Preferably, the dust-proof face of the light transmission can in first refractive body, the second refractive body and/or the 3rd refractive body It is at least one engage, form the closing to light pipe light-emitting window.

Preferably, the dust-proof face of the light transmission is transparent or partially transparent.

Preferably, first refractive body is taper or paraboloidal, triangle body, semicylinder, half length on pinnacle or flat-top Cube face or the outer surface of half gengon.

Preferably, second refractive body is the conical surface of flat-top, semicircle, rectangle or polygon irregular shape, parabola Shape or top or four sides cube of bottom opening be trapezoidal, positive cube, long cube, polygon cube it is trapezoidal；Or hemispherical, semicylinder Shape；

Preferably, the first refractive body can be configured to connector and retractable.

Preferably, the first refractive body connector is adapted to the axis rotation around connector.

Preferably, the second refractive body can be configured to connector and retractable.

Preferably, the second refractive body connector is adapted to the axis rotation around connector.

Preferably, the 3rd refractive body is the taper of flat-top, semicircle, rectangle or polygon irregular shape, parabola Shape or top or four sides cube of bottom opening be trapezoidal, positive cube, long cube, polygon cube it is trapezoidal；Or hemispherical, semicylinder Shape；

Preferably, the 3rd refractive body can be configured to connector and retractable.Ground is further improved, is configured to connect 3rd refractive body of body is adapted to the axis rotation around connector.

The invention further relates to application of the light pipe diffuser according to the present invention in photoconductive tube lighting system.

In a set of lighting system, including more than one light pipe diffuser as described in claim 1, sky is built to realize Interior effective lighting.

Preferably, artificial light source can also be included in the lighting system；On the light pipe diffuser or periphery Optical sensor is set, according to the light intensity that the optical sensor perceives, controls the brightness of artificial light source and the position of reflective surface and appearance State.To maximize natural lighting efficiency, artificial light source consumption is saved.

The beneficial effects of the present invention are：Using the light pipe of the diffuser, the luminous flux immediately below light-emitting window is reduced, Luminance-reduction；And the luminous flux of neighboring area increases, brightness significantly improves；In addition, the position by setting each refractive body, reaches Maximally utilize the effect of sky scattering light and periods of direct sunlight light in the case of different weather.I.e. when weather conditions are based on the cloudy day When, diffuser possesses the form for being more suitable for conducting sky scattering light, and when it is main that weather conditions, which are fine day, diffuser possesses more It is suitble to the form of transfer sun direct light.Therefore the system can take into account the system requirements under cloudy day and fine day state, maximize Ground utilizes solar energy.

Description of the drawings

The present invention is described in further detail with reference to the accompanying drawings and detailed description.

Fig. 1:A set of light pipe mounted in underground parking provides the schematic diagram of illumination in the prior art

Fig. 2:The indoor illumination intensity curve of prior art light pipe and diffuser at the cloudy day

Fig. 3:The indoor illumination intensity curve of prior art light pipe and diffuser under fine day

Fig. 4：Operation principle schematic diagram of the one embodiment of the present of invention at the cloudy day

Fig. 5：The operation principle schematic diagram of another preferred embodiment of the present invention

Fig. 6：Operation principle schematic diagram of the one embodiment of the present of invention at the cloudy day

Fig. 7:The brightness curve figure exported using the light pipe of the present invention (under standard sky)

Fig. 8：Operation principle schematic diagram of the one embodiment of diffuser of the present invention in fine day

Fig. 9:The brightness curve figure exported using the light pipe of the present invention (under clear sky)

Figure 10:The each several part exploded perspective schematic diagram of embodiment shown in Fig. 6 and Fig. 8

Figure 11：The operation principle schematic diagram of a preferred embodiment containing dust-proof face of the invention

Figure 12:The each several part exploded perspective schematic diagram of a preferred embodiment of the invention

Figure 13：The structure diagram of another preferred embodiment containing dust-proof face of the invention

Figure 14:The each several part exploded perspective schematic diagram of embodiment shown in Figure 13

Figure 15：Using the schematic diagram of another light pipe embodiment of diffuser of the present invention

Figure 16:The each several part exploded perspective schematic diagram of embodiment shown in Figure 15

Figure 17：Using the schematic diagram of another light pipe embodiment of diffuser of the present invention

Figure 18:The each several part exploded perspective schematic diagram of embodiment shown in Figure 17

Figure 19：Using the schematic diagram of another light pipe embodiment of diffuser of the present invention

Figure 20:The each several part exploded perspective schematic diagram of embodiment shown in Figure 19

Specific embodiment

The greatest drawback of the prior art is that they can not be sky scattering light (light under standard sky is sky scattering light) Configuration is oriented in light pipe exit, causes the actual waste to solar energy, improves the investment of guide-lighting tube apparatus Cost.

As shown in figure 4, for the light pipe 1 according to one embodiment of the present of invention and its mounted on photoconductive tube light-emitting window 7 diffuser 6.The diffuser 6 of light pipe 1 is made of the first refractive body 3, the second refractive body 4.The light pipe diffuser 6 is pacified Mounted in the end of light pipe 1.One reflective surface of the first refractive body 3 is towards light pipe light-emitting window；One of second refractive body 4 is anti- Smooth surface is towards irradiated area.First refractive body 3 is arranged to the light reflection for being emitted quite a few from light pipe light-emitting window 7 On to second refractive body 4, and required illuminated or illumination region is reflexed to by the latter.Thus will be immediately below light pipe Luminous flux is concentrated to be transferred at a distance, effectively expands irradiated area, improves lighting efficiency.

As shown in Figure 4, skylight directive from all directions dome skylight 1；And the row of the scattering light in one of direction Inbound path is tracked and is expressed in figure.As shown in the figure, the first refractive body 3 is arranged to go out several threads from light pipe On scattering light reflection to the second refractive body 4 of optical port outgoing, and these skylights are transferred to elsewhere by the second refractive body 4.It should The typical mounting location that invention example is applicable in be building north side square and its be arranged with underground parking.In this case The light pipe system of installation most times can't accept sunlight, thus set first refractive body and one second it is anti- Body of light is just enough to promote irradiated area, achievees the purpose that promote solar energy utilization ratio.

The present invention, which puies forward technical solution and under cloudy state sky scattering light can be diffused to distance to greatest extent, to be led The region of light pipe system light-emitting window farther out；And direct sunlight is transferred to indoor distances light pipe light-emitting window under fine day state Farther region, and system structure does not influence its transmission under cloudy state to sky scattering light.

Fig. 5 is the operation principle schematic diagram of preferred embodiment according to another preferred.

As shown in figure 5,1 is light pipe, 2 be dome skylight, and 3 be the first refractive body, and 4 be the second refractive body, and 5 be the 3rd reflective Body.Wherein the second refractive body 4 is containing two light reflection surfaces upwardly and downwardly, and the 3rd refractive body 5 is anti-containing a light directed downwardly Penetrate face.The light pipe diffuser is mounted at the outlet 7 of light pipe 1.Before first refractive body 3 is located at light pipe light outlets Side；The position of 3rd refractive body 5 can adjust；It is reflective that 3rd refractive body 5 is arranged on the first refractive body 3 and second Between body 4；First refractive body 3, the second refractive body 4 and the 3rd refractive body 5 can be coaxial.

It is operation principle schematic diagram of the one embodiment of the present of invention at the cloudy day as shown in Figure 6.Under cloudy state, the The position of three refractive bodies 5 is configured to be positioned proximate to second refractive body 4, therefore the upper surface and second of the 3rd refractive body 5 The lower surface of refractive body 4 mutually covers, and the practical function of the second refractive body 4 is made to disappear.So it at this point, is sent out from light pipe exit The scattering light penetrated, downward light are reflected by the first refractive body 3 on the lower surface of the 3rd refractive body 5, and are turned by the latter Distally.In this way, the luminous flux immediately below light pipe is transferred at a distance, irradiated area is effectively expanded, is solved existing The problem of light pipe can not make full use of solar energy, and equipment investment utilization rate is not high.

Fig. 7 is shown according to the photoconductive tube diffuser shown in Fig. 6, under cloudy (i.e. standard sky) state, is reached The radius of the lighting area of 30lux is 3300mm, and area is 34 square metres, is 18 square metres of effective area corresponding to the prior art The 189% of (radius shown in Fig. 2 is about 2400mm) realizes 89% improved efficiency.Existing system is solved in cloudy shape The defects of under state.

It is schematic diagram of the light pipe diffuser under fine day state shown in Fig. 6 as shown in Figure 8, the position of the 3rd refractive body 5 Put and be configured to be positioned proximate to the first refractive body 3, thus pulled open between the second refractive body 4 and the 3rd refractive body 5 away from From the reflection action of the second refractive body 4 is made to be achieved.At this point, from the part direct light that light pipe exit 7 emits, by the One refractive body 3 and the 3rd refractive body 5 are transferred on the second refractive body 4, and are turned at a distance by the latter；It is exported simultaneously from light pipe The some scattered light of 7 transmitting of place, is still transferred on the second refractive body 4 by the first refractive body 3, and is turned to relatively by the latter At a distance.In this way, the direct light and luminous flux scattered immediately below quite a few light pipe are transferred at a distance, effectively expand The problem of irradiated area, solar energy can not be made full use of by solving existing light pipe, equipment investment utilization rate is not high.It solves existing There is the defects of system is under fine day state.

Fig. 9 shows that present invention embodiment shown in Fig. 8 under fine day state, reaches the half of the lighting area of 30lux Footpath is 7000mm, and area is 153 square metres, is that (radius shown in Fig. 3 is 95 square metres of effective area corresponding to the prior art About 5500mm) 162%, realize 62% improved efficiency.

Figure 10 is that each several part of embodiment shown in Fig. 7 and Fig. 8 decomposes 3D schematic diagrames.

So the present invention significantly increases the lighting area of light pipe system so as to improve lighting efficiency, guide-lighting piping is made The solar energy utilization ratio under the conditions of different weather of uniting significantly improves.Therefore, the present invention efficiently solves conventional light guide guard system A development problem.

As shown in figure 11, in a preferred embodiment containing dust-proof face of the invention, the first refractive body 3 and light transmission are dust-proof Face 8, the second refractive body 4 connect, and form the closing to 1 light-emitting window 7 of light pipe.

Dust cover is closed with what refractive body and light-emitting window and/or photoconductive tube were formed beneficial to protection light pipe device.

Figure 12 is each several part exploded perspective schematic diagram of embodiment shown in Figure 11.As shown in Figure 12, in the embodiment In, the shape in the dust-proof face of light transmission be one it is cricoid fall flattened conical shape, and its bottom and the bottom seamless connection of the first refractive body, even Integrally；It pushes up the bottom seamless connection with the second refractive body, is connected.First refractive body, the second refractive body and light transmission are dust-proof Face forms the space of a closure.

Figure 13 is another light pipe embodiment using diffuser of the present invention.Embodiment illustrated in fig. 13 and Figure 11 institutes Change in shape of the embodiment difference lies in the dust-proof face of light transmission is stated, i.e., its own, which is formed, is closed, and the first refractive body 3 is contained in In it.

Figure 14 is each several part exploded perspective schematic diagram of embodiment shown in Figure 13.As shown in Figure 14, the present embodiment with Difference lies in the shapes in the dust-proof face of light transmission for embodiment described in Figure 11.The dust-proof face 8 of light transmission in the present embodiment is a upper end The cylindrical of opening.The top of cylindrical and the bottom seamless connection of the second refractive body 4, form a closed space；And cylinder First refractive body 3 is included into this closed space by the bottom of face shape.

Figure 15 is another light pipe embodiment using diffuser of the present invention.Embodiment illustrated in fig. 15 and Figure 13 institutes State change in shape of the embodiment difference lies in the first refractive body 3, i.e., in the present embodiment, the first refractive body 3 for one along The circular wing shape folding face of center line doubling.Figure 16 is each several part exploded perspective schematic diagram of embodiment shown in Figure 15.Such as Figure 16 Shown in, the present embodiment is a circular wing shape difference lies in the shape of the first refractive body 3 with embodiment described in Figure 13 Folding face, and the first refractive body is a conical surface (referring to Figure 14) in Figure 13.

Figure 17 is another light pipe embodiment using diffuser of the present invention.Embodiment illustrated in fig. 17 and Figure 15 institutes The difference for stating embodiment has three.One is the change in shape of the first refractive body 3, i.e., in the present embodiment, the first refractive body 3 is One rectangle folding face along center line doubling；Secondly it is 4 change in shape of the second refractive body, i.e., in the present embodiment, second Refractive body 4 is a four side cube prismatoids (pyramid for being similar to a flat-top)；Thirdly it is the shape in transparent sealing face 8 Shape changes, i.e., in the present embodiment, transparent sealing face 8 is a tablet.Figure 18 is each several part point of embodiment shown in Figure 17 Solve stereoscopic schematic diagram.

Figure 19 is another light pipe embodiment using diffuser of the present invention.Embodiment illustrated in fig. 19 and Figure 17 The embodiment difference lies in transparent sealing face 8 position, i.e., in the present embodiment, 8 and second refractive body 4 of transparent sealing face It is upper along linking (and its size is also correspondingly adjusted to match with the size suitable for reading of the second refractive body 4) and with light pipe outlet 7 It fits closely, plays sealing light pipe, the purpose that prevention dust enters；And described in Figure 17 in embodiment transparent sealing face 8 with The lower edge linking of second refractive body 4, forms a confined space.Figure 20 is each several part exploded perspective of embodiment shown in Figure 19 Schematic diagram.

In addition, the present invention relates to lighting system, lighting system includes the light pipe described in one or more as above each examples And diffuser.It balances and ensures except will also include artificial light source using the light pipe device of natural light in general lighting system Room lighting.In the lighting system of the present invention, optical sensor is arranged as required to, perceives the light in desired zone in building By force, and according to the region light intensity and the requirement to light intensity, automatically adjust or switch the artificial light source in the region so that entire The light intensity variation of system dynamically adapting lamp, reduces the consumption of artificial light source.In addition, the light perceived according to optical sensor It by force, can be with position, shape and/or the posture of each refractive body of automatic light guide pipe diffuser, so that conduit guard system can basis Indoor light intensity is transmitted to, preferably to utilize natural light.

The present invention is not limited to embodiments discussed above.Above the description of specific embodiment is intended to retouch It states and illustrates technical solution of the present invention.Such as, it should be understood that the shape of refractive body in the present invention, position, posture can be with Realize variation, and the variation that the combination of itself and dust cover can also substitute.The obvious conversion that is enlightened based on the present invention or Replacement should also be as being considered within protection scope of the present invention.Above specific embodiment is used for disclosing the optimal reality of the present invention Applying method, so that those of ordinary skill in the art can apply the numerous embodiments of the present invention and a variety of alternatives To reach the purpose of the present invention.

Reference numeral

1 light pipe

2 dome skylights

3 first refractive bodies

4 second refractive bodies

5 the 3rd refractive bodies

6 scattering sheets

7 light-emitting windows

The dust-proof face of 8 light transmissions.

Claims (17)

1. a kind of light pipe diffuser：Including

First refractive body, the reflective surface of first refractive body is towards the light pipe light-emitting window；With

Second refractive body, second refractive body contains at least one reflective surface, wherein first refractive body is arranged to phase When a part is reflexed to from the light reflection that light pipe light-emitting window is emitted to second refractive body, and by second refractive body Required illuminated or illumination region.

2. light pipe diffuser as described in claim 1, which is characterized in that further include the 3rd refractive body, the 3rd refractive body Containing at least one reflective surface and between the first refractive body and the second refractive body, by the light from the first refractive body and/or Light part from other directions, which is diverted to, needs illuminated or illumination region.

3. light pipe diffuser as described in claim 1, which is characterized in that first refractive body, the second refractive body, the 3rd Posture, shape and/or the position of refractive body are arranged to adjustable.

4. light pipe diffuser as described in claim 1, which is characterized in that the described diffuser further include the dust-proof face of light transmission with First refractive body and/or the second refractive body engage, and form the closing to light pipe light-emitting window.

5. light pipe diffuser as claimed in claim 2, which is characterized in that the described diffuser further include the dust-proof face of light transmission with At least one in first refractive body, the second refractive body and/or the 3rd refractive body engages, and is formed to light pipe light-emitting window Closing.

6. light pipe diffuser as described in claim 1, which is characterized in that first refractive body is pinnacle or the cone of flat-top Shape or paraboloidal, triangle body, semicylinder, half rectangular honorable or half gengon outer surface.

7. light pipe diffuser as described in claim 1, which is characterized in that second refractive body is the conical surface of flat-top, half Circular, rectangle or polygon irregular shape, paraboloidal or top or four sides cube of bottom opening are trapezoidal, positive cube, long cube Shape, polygon cube it is trapezoidal；Or hemispherical, semi-cylindrical.

8. light pipe diffuser described in claim 1, which is characterized in that the first refractive body can be configured to connector and can open It closes.

9. the light pipe diffuser described in claim 8, which is characterized in that the first refractive body connector is adapted to around connection The axis rotation of body.

10. light pipe diffuser described in claim 1, which is characterized in that the second refractive body can be configured to connector and simultaneously may be used Folding.

11. the light pipe diffuser described in claim 10, which is characterized in that the second refractive body connector is adapted to around even The axis rotation of junctor.

12. light pipe diffuser as described in claim 1, which is characterized in that the 3rd refractive body is the taper of flat-top, semicircle Shape, rectangle or polygon irregular shape, paraboloidal or top or four sides cube of bottom opening are trapezoidal, positive cube, long cube Shape, polygon cube it is trapezoidal；Or hemispherical, semi-cylindrical.

13. light pipe diffuser as claimed in claim 12, which is characterized in that the 3rd refractive body can be configured to connect Body is simultaneously retractable.

14. light pipe diffuser as claimed in claim 13, which is characterized in that the 3rd refractive body for being configured to connector It is adapted to the axis rotation around connector.

15. application of the light pipe diffuser in photoconductive tube lighting system as described in one of claim 1-14.

16. a kind of lighting system, including more than one light pipe diffuser as described in claim 1.

17. lighting system as claimed in claim 16, which is characterized in that further include artificial light source in the lighting system； Optical sensor in lighting system is set, according to the light intensity that the optical sensor perceives, controls the brightness of artificial light source and reflective The position in face and/or posture.