CN205316146U - Light projector - Google Patents

Abstract

Light projector (30) include the reflection component that has LED light source (10) of LED (2) of alignment and have into the curved plane of reflection of parabola (37aa). LED light source (10) and reflection component (37) arrange so so that the optical axis direction (30ax) of LED light source (10) is perpendicular with transmit direction (30ay) that the light of plane of reflection (37aa) reflection sends along this transmit direction. Plane of reflection (37ar) including first plane of reflection (37ar) and construct with than the second plane of reflection (37br) of the mode reverberation that first plane of reflection (37ar) spreads more. First plane of reflection (37ar) is so constructed so that the light along optical axis direction (30ax) of LED light source (10) passes the curved focus of parabola (30az) then shines first plane of reflection (37ar). Second plane of reflection (37br) more is close to LED light source (10) than first plane of reflection (37ar) in the optical axis direction (30ax) of LED light source (10).

Description

Light projector

Technical field

This utility model relates to a kind of light projector, particularly relates to a kind of light projector being configured in constant direction focus illumination light.

Background technology

The light projector with LED (light emitting diode) light source is put on market.

Reflector that this light projector is provided with channel-shaped and the multiple LED (such as JP patent publication No. 2011-142019, hereinafter referred to as documents 1) arranged on the longitudinal direction of reflector.

In the light projector of documents 1, reflector has cross section and is shaped like the reflecting surface of parabolic curve. The plurality of LED is arranged in the focal position of the parabolic curve of reflector and each has the optical axis towards parabolic curve. The light projector of documents 1 has gratifying smooth transmission characteristics.

Light projector can be arranged on various position, can be placed in it can be seen that the place of light emitting surface of light projector. When it can be seen that during light emitting surface, the inhomogeneities of light from LED that each position position by LED and adjacent LED between cause be can be observed on light emitting surface. Owing to light projector needs have the irregularity in brightness reduced further, so the such structure of light projector is inadequate. Need further improvement.

Utility model content

The purpose of this utility model is in that to provide a kind of light projector with the irregularity in brightness of reduction further.

Light projector of the present utility model includes LED light source 10 and reflecting member 37. Reflecting member 37 is configured to reflect the light from LED light source 10. LED light source 10 includes the multiple LED2 alignd that are in line, and its optical axis direction 30ax is vertical with the alignment direction of multiple LED2. Reflecting member 37 has the reflecting surface 37aa that cross section is parabolic curve. Described LED light source 10 is arranged in such a way that with reflecting member 37 the optical axis direction 30ax of LED light source 10 is vertical with launching direction 30ay, and reflecting surface 37aa is along the light along optical axis direction 30ax of this transmitting direction 30ay reflex LED light source 10. Reflecting surface 37aa includes the first reflecting surface 37ar and the second reflecting surface 37br. First reflecting surface 37ar is configured to reflect the light from LED light source 10. Second reflecting surface 37br is configured to become the luminous reflectance from LED light source 10 more spread than by the light of the first reflecting surface 37ar reflection.First reflecting surface 37ar is configured so that the light along optical axis direction 30ax of LED light source 10 is through the focus 30az of parabolic curve, then irradiates the first reflecting surface. Second reflecting surface 37br on the optical axis direction 30ax of LED light source 10 than the first reflecting surface 37ar closer to LED light source 10.

Described light projector can have the irregularity in brightness of reduction further.

Accompanying drawing explanation

The one or more embodiments according to this utility model design only described without limitation by accompanying drawing by example. In the accompanying drawings, identical accompanying drawing labelling indicates same or analogous element.

Fig. 1 is the sectional view of the light projector according to embodiment;

Fig. 2 is the front view of the light projector according to this embodiment;

Fig. 3 is the side view of the light projector according to this embodiment;

Fig. 4 is the partial enlarged view of the critical piece of the light projector according to this embodiment;

Fig. 5 is the front view of the critical piece of the light projector according to this embodiment;

Fig. 6 is the circuit theory diagrams of the critical piece of the light projector according to this embodiment;

Fig. 7 is the schematic diagram of the electrical connection illustrating the light projector according to this embodiment;

Fig. 8 is the schematic diagram illustrating the light projector as a case of comparative examples compared to above-mentioned embodiment.

Detailed description of the invention

Hereinafter, referring to figs. 1 through Fig. 7, the light projector 30 according to present embodiment is described. In the accompanying drawings, identical accompanying drawing labelling indicates same kind of element, it will omit unnecessary explanation. In order to clearly illustrate, in figure, the size of element and position relationship can amplify. In the following description, the element constituting present embodiment can include a component as two or more elements and the effect playing two or more elements, and shares two or more components of the function of a component.

As shown in Figure 1 to Figure 3, LED light source 10 and reflecting member 37 are included according to the light projector 30 of present embodiment. Reflecting member 37 is configured to reflect the light from LED light source 10. As shown in Fig. 4 to Fig. 5, LED light source 10 has the LED2 of multiple alignment that is in line. The optical axis direction 30ax (direction of the respective optical axis of multiple LED2) of LED light source 10 is vertical with the alignment direction of multiple LED2. Reflecting member 37 has in a cross section view for the reflecting surface 37aa (referring to Fig. 1) of parabolic curve. Described LED light source 10 is arranged such that with reflecting member 37 the optical axis direction 30ax of LED light source 10 is vertical with launching direction 30ay, and reflecting surface 37aa is along the light along optical axis direction 30ax of this transmitting direction 30ay reflex LED light source 10. Reflecting surface 37aa has the first reflecting surface 37ar and the second reflecting surface 37br. First reflecting surface 37ar is configured to reflect the light from LED light source 10. Second reflecting surface 37br is configured to reflect the light from LED light source 10 than in the way of more being spread by the light of the first reflecting surface 37ar reflection. First reflecting surface 37ar is configured so that the light along optical axis direction 30ax of LED light source 10 is through the focus 30az (in the present embodiment for the focal line of reflecting surface 37aa) of parabolic curve, then irradiates the first reflecting surface. Second reflecting surface 37br is arranged on the optical axis direction 30ax of LED light source 10 than the first reflecting surface 37ar position closer to LED light source 10.

Light projector 30 according to present embodiment is provided with the second reflecting surface 37br, it is configured in the way of more spreading than the first reflecting surface 37ar to reflect light, and close to LED light source 10 on the optical axis direction 30ax of LED light source 10 such that it is able to reduce irregularity in brightness further.

Such as, light projector 30 can by light focusing in a part for building, display panel etc. Will be described below the component of light projector 30 according to present embodiment. First detailed description is for the LED light source 10 of light projector 30. LED light source 10 can include LED module 10a as shown in Figure 4 and Figure 5.

As shown in Figure 4 and Figure 5, LED module 10a includes the plurality of LED2 and circuit board 3. The plurality of LED2 is aligned to straight line on circuit board 3. The plurality of LED2 includes a multiple LED2f and multiple 2nd LED2s. Each for be configured to send the White LED of white light in a plurality of LED2f. The plurality of 2nd LED2s includes the color LED being configured to send the two or more types of different colours light. Specifically, the two or more groups 10G being described below each in the color LED 2c of two or more types send white light due to the mixing of each different colourama sent of the adjacent color LED2c from group 10G. In this embodiment, the plurality of LED2 includes two or more groups 10G, and often group includes two LED2f and the 2nd LED2s between two LED2f. In the diagram, often group 10G by pecked line around. The plurality of LED2 is arranged so that two or more groups 10G repeats alignment with straight line.

Often in group 10G a LED2f and and contiguous the 2nd LED2s of a LED2f between the first distance 2N less than in adjacent sets 10G second distance 2L between an adjacent LED2f. More specifically, multiple LED2 of LED module 10a are arranged such that each LED2f (hereinafter referred to as " a described LED2f ") in every group 10G and the twoth LED2s phase adjacent for LED2f with the oneth in same group of 10G are from the first distance 2N, and this first distance 2N less than a described LED2f and another organize in 10 with the second distance 2L between described adjacent for a LED2f LED2f. In the diagram, the center of the oneth LED2f and and the center of described adjacent for LED2f the 2nd LED2s between centre distance as the example of the first distance 2N, the centre distance between center and the center of a LED2f adjacent for LED2f with the oneth of a LED2f is as the example of second distance 2L.

In LED module 10a, often in group 10G the first distance 2N between a LED2f and the 2nd LED2s less than second distance 2L between a LED2f in adjacent sets 10G. In other words, between a LED2f (hereinafter referred to as " a described LED2f ") and the adjacent LED of the 2nd LED2s the first distance 2N less than in a described LED2f and another group 10G with the second distance 2L between described adjacent for a LED2f LED2f. Thus, light emitted color inhomogeneities can be reduced.

Except LED2 and circuit board 3, LED module 10a also includes various electronic component 3j. Such as, each LED2 can be LED encapsulation piece. Each LED encapsulation piece can be constituted (referring to Fig. 4) by LED chip 2j, packaging part 2m and sealing member 2n. Packaging part 2m can be shaped with the outward appearance such as cuboid. In the example in figure 4, packaging part 2m is shaped like the cuboid with square front. Such as, the material of packaging part 2m can be synthetic resin. Packaging part 2m may be configured to have the LED chip 2j chamber being placed in one in front view. The chamber of packaging part 2m can be configured to suitable form and make have light solid angle corresponding with predetermined angular from the LED2 light sent. Packaging part 2m can be provided with anode electrode and cathode electrode in side behind.Anode electrode is configured to be connected with the positive electrical of LED chip 2j in chamber. Cathode electrode is configured to be connected with the negative electricity of LED chip 2j in chamber. Such as, anode electrode and cathode electrode can be made up of the copper product being coated with silver, nickel etc.

LED chip 2j in the chamber of sealing member 2n sealed package 2m. Sealing member 2n has optical transparence and allows the light from LED chip 2j to pass. The example of the material of sealing member 2n includes silicones, epoxy resin, glass etc. Sealing member 2n can comprise the dispersant for disperseing the light from LED chip 2j. The example of the material of dispersant includes silicon oxide, titanium oxide etc.

Each LED2 is not limited to have LED chip 2j, packaging part 2m and the such structure of sealing member 2n. Each LED2 can include lens. Lens may be configured to assemble or spread the light from LED chip 2j. Such LED2 can send the light with specific light distribution character by lens. If the chamber of packaging part 2m and lens are so shaped that LED2 sends the light with narrow solid angle, luminous energy focuses on specific region effectively. It is 15 ° or less structure that the example of the narrow solid angle (distribution of narrow angle light) of LED2 includes 1/2 luminous intensity angle. 1/2 luminous intensity angle is the twice of the angle between the optical axis of LED2 and the direction that luminous intensity is maximum emission intensity half. Each LED2 can be made up of the light transmission covering member of LED chip 2j, installation base plate placed on it for LED chip 2j and covering LED chip 2j. As long as the light with particular shade of color can be sent, each LED2 can be independent LED chip 2j.

A LED2f in the plurality of LED2 is each is White LED. In White LED, blue LED die such as can be used as corresponding LED chip 2j. In White LED, corresponding sealing member 2n can comprise yellow fluorophor, its by the blue excitation from blue LED die to send gold-tinted. White LED can owing to sending white light from the blue light of blue LED die and the mixing energy of gold-tinted obtained by yellow fluorophor. Fluorophor for White LED is not limited solely to yellow fluorophor, and can be red-emitting phosphors and green-emitting phosphor. Fluorophor for White LED is alternatively yellow fluorophor and red-emitting phosphors. The LED chip of White LED is not limited solely to blue LED die, but White LED can for be configured to send the assembly of the ultraviolet LED chip of ultraviolet light, red-emitting phosphors, green-emitting phosphor and blue emitting phophor, to send white light.

Each White LED has the assembly of suitable LED chip 2j and suitable fluorophor, and is configured to send the white light with particular shade of color. White light is including at least the light of the light source colour classified by JISZ9112, such as color of sunshine, neutral white, white, warm white and bulb color. In LED module 10a, the White LED that will be configured to send daylight coloured light is used as each LED2f. It is the light that 6500K and light source colour are categorized as color of sunshine that White LED is configured to send correlated color temperature.

The 2nd LED2s in the often group 10G of the plurality of LED2 can be the color LED 2c being configured to send the two or more types of different colourama. In figures 4 and 5, in order to easily distinguish each LED2f and each 2nd LED2s, rectangular shape is used (more specifically in the chamber of the packaging part 2m of each LED2f in plan view, square shape) describe, and the chamber of the packaging part 2m of each 2nd LED2s is described by circle in plan view. The chamber of the oneth LED2f and the two LED2s is not limited to different shapes, it is possible to have identical shape.

The example of color LED 2c includes the structure of colorful light-emitting, such as HONGGUANG, green glow, blue light, gold-tinted, blue green light, slightly yellow green glow and orange-colored light. Such as, color LED 2c can include as the red LED chips of LED chip 2j, green LED chip, blue LED die, yellow LED chip, aeruginous LED chip, yellowish green LED chip, orange LED chip etc. In the example or similar example of Fig. 4, although often group 10G includes three color LED 2c of two or more type, but the color LED 2c often organizing the two or more types in 10G can include red LED 2r, green LED 2g and blue led 2b. Red LED 2r is configured to send corresponding HONGGUANG. Green LED 2g is configured to send corresponding green glow. Blue led 2b is configured to send corresponding blue light. Therefore, LED module 10a includes red LED 2r, green LED 2g as trichromatic color LED 2c and blue led 2b, it is possible to send the white light with specified hue.

Circuit board 3 is shaped as elongated board. Circuit board 3 includes hole 3h formed therein in the thickness direction thereof. The plurality of LED2 and various electronic component 3j is arranged on first 3aa of circuit board 3. The example of electronic component 3j includes fixed resistor, capacitor, IC, jumper element etc. The plurality of LED2 is aligned to straight line along the longitudinal direction of circuit board 3 on first 3aa. Connect terminal 3t to be arranged on second 3ba of opposite side of first 3aa into circuit board 3. Circuit board 3 includes the conductive pattern of reservation shape on first 3aa. The plurality of LED2 and electronic component 3j is electrically connected with the conductive pattern of circuit board 3 by connecting element such as solder. As for connecting terminal 3t, it is electrically connected with conductive pattern from the pin of second 3ba to first 3aa of circuit board 3 by connecting element such as solder. Circuit board 3 will connect terminal 3t, electronic component 3j and the plurality of LED2 electrical connection by conductive pattern. Connect terminal 3t to electrically connect with conductive pattern, thus the multiple LED2 to every kind of the different colouramas for the plurality of LED2 are separately energized.

Such as, circuit board 3 can be glass epoxy board. Circuit board 3 is not limited to glass epoxy board, but can be metal base printed circuit board, ceramic substrate etc. Conductive pattern such as can be made up of copper or copper alloy. In the example of fig. 5,45 LED2 are arranged on first 3aa of circuit board 3 in a longitudinal direction. Especially, 18 White LEDs (LED2f), 9 red LED 2r, 9 green LED 2g and 9 blue led 2b are arranged on circuit board 3. First 3aa of circuit board 3 is formed with 9 groups of 10G, and often group includes two White LEDs and a red LED 2r between two White LEDs, a green LED 2g and a blue led 2b. Circuit board 3 can have the region covered by white resist layer, and this region is the part except the installation region of the plurality of LED2 and various electronic component 3j of first 3aa. The white resist layer of circuit board 3 can be used as reflecting layer. Reflecting layer can prevent the light from the plurality of LED2 to be absorbed in circuit board 3.

As shown in Figure 6, LED module 10a has the first circuit 3f, and in the first circuit 3f, a LED2f is electrically connected in series to each other. In the first circuit 3f, first end of a LED2f of series connection electrically connects with total electrode 3e. In the first circuit 3f, the second end as the other end of first end of the LED2f connected electrically connects with the first independent electrode 3k.Such as, the first circuit 3f can include 18 White LEDs. LED module 10a is configured to the electric current controlling to flow through the first circuit 3f, exports thus regulating the white light from White LED. First circuit 3f is not limited to the White LED being electrically connected in series to each other. First circuit 3f can include the White LED electrically connected parallel with one another or the White LED being serially connected and electrically connecting in parallel.

LED module 10a has second circuit 3r, and in second circuit 3r, red LED 2r is electrically connected in series to each other. In second circuit 3r, first end of the red LED 2r of series connection electrically connects with described total electrode 3e. In second circuit 3r, the second end as the other end of described first end of the red LED 2r connected electrically connects with the second independent electrode 3m. Such as, second circuit 3r can include 9 red LED 2r. LED module 10a is configured to the electric current controlling to flow through second circuit 3r, exports thus regulating the HONGGUANG from red LED 2r. Second circuit 3r is not limited to the red LED 2r being electrically connected in series to each other. Second circuit 3r can include the red LED 2r electrically connected parallel with one another or the red LED 2r being serially connected and electrically connecting in parallel.

LED module 10a has tertiary circuit 3g, is electrically connected in series to each other at tertiary circuit 3g Green LED2g. In tertiary circuit 3g, first end of the green LED 2g of series connection electrically connects with described total electrode 3e. In tertiary circuit 3g, the second end as the other end of described first end of the green LED 2g connected electrically connects with the 3rd independent electrode 3n. Such as, tertiary circuit 3g can include 9 green LED 2g. LED module 10a is configured to the electric current controlling to flow through tertiary circuit 3g, exports thus regulating the green glow from green LED 2g. Tertiary circuit 3g is not limited to the green LED 2g being electrically connected in series to each other. Tertiary circuit 3g can include the green LED 2g electrically connected parallel with one another or the green LED 2g being serially connected and electrically connecting in parallel.

LED module 10a has the 4th circuit 3b, and in the 4th circuit 3b, blue led 2b is electrically connected in series to each other. In the 4th circuit 3b, first end of the blue led 2b of series connection electrically connects with described total electrode 3e. In the 4th circuit 3b, the second end as the other end of described first end of the blue led 2b connected electrically connects with the 4th independent electrode 3p. Such as, the 4th circuit 3b can include 9 blue led 2b. LED module 10a is configured to the electric current controlling to flow through the 4th circuit 3b, thus regulating the blue laser output from blue led 2b. 4th circuit 3b is not limited to the blue led 2b being electrically connected in series to each other. 4th circuit 3b can include the blue led 2b electrically connected parallel with one another or the blue led 2b being serially connected and electrically connecting in parallel.

LED module 10a controls the respective output of color LED 2 sending the two or more types of different colourama respectively to mix the respective ray of light from the two or further types of color LED, thus reproduces the light with arbitrary hue. For sending the light output of the color LED 2c of the two or more types of different colourama in independently controlled group of 10G of present embodiment, and the respective ray of light from the two or further types of color LED 2c is mixed. The two or further types of color LED 2c send different colouramas with complementary color relationship such that it is able to reproduce white light. Flow through second circuit 3r, the electric current of tertiary circuit 3g and the four circuit 3b is independently controlled, and LED module 10a can send white light or have the light of arbitrary hue whereby.As long as LED module 10a can send white light by the different colourama of mixing, LED module 10a is not limited to send the structure of the light with arbitrary hue. Except red LED 2r, green LRD2g and blue led 2b color LED 2c except, LED module 10a also includes the White LED (LED2f) that each can send white light independently, it is possible to improve the light output of white light. LED module 10a makes electric current only by the first circuit 3f, thus only can send white light by White LED.

LED module 10a includes each group of 10G, and in the often group of group 10G, the color LED 2c of two or more types is positioned between two White LEDs (LED2f) to reduce the colour inhomogeneous of color LED 2c. What be thus able between reduction group 10G is colour inhomogeneous. In LED module 10a, often in group 10G the first distance 2N between White LED (LED2f) and the adjacent LED of color LED 2c less than the second distance 2L between adjacent white LED in adjacent sets 10G (LED2f). Accordingly, it is capable to further colour inhomogeneous between reduction group 10G. Preferably, often in group 10G the 3rd distance 2T between adjacent color LED2c less than the first distance 2N often organized between White LED in 10G (LED2f) and the adjacent LED of color LED 2c. In the example in figure 4, the distance between center and the center of another color LED 2c adjacent with described color LED 2c of color LED 2c is equivalent to described 3rd distance 2T. Accordingly, because each 3rd distance 2T is respectively less than each first distance 2N, the mixing of different colouramas from each adjacent LED of the color LED 2c of two or more types causes obtaining the colourama improved.

In such LED module 10a, if the distance between adjacent LED 2 is relatively big, bright and between dark location difference will become apparent from the region of the optical illumination by LED module 10a. By reducing the distance between each adjacent LED, the difference that LED module 10a is avoided that between bright and dark location becomes apparent upon. As for LED module 10a, if the distance decreased between each adjacent LED, the sum of LED can increase. It is therefore preferable that it is not apparent so that dark location that the quantity of LED2 is determined to be. Send in the situation of white light by mixing from the different colouramas of each adjacent color LED 2c at LED module 10a, it is preferable that each adjacent LED 2 is so close that in the distance for electrical insulator that can guarantee that between each adjacent LED 2. LED module 10a includes the plurality of LED2 being aligned to straight line in a longitudinal direction on elongated circuit board 3. By lighting the plurality of LED2 being aligned to straight line, LED module 10a can be used as line source. Light projector 30 includes the LED module 10a as LED light source, and this LED module 10a is line source, therefore can reduce its size compared with the situation providing HID (high-intensity discharge) lamp or mercury lamp. By the color LED 2c sending different colourama being aligned to straight line on circuit board 3 in a longitudinal direction, LED module 10a can be configured to send the line source of the corresponding light with different tone from LED. In LED module 10a, if the anode of the plurality of LED2 and cathode electrode are arranged on circuit board 3 along its width, compared with each adjacent LED situation arranged in a longitudinal direction, them can be made close. In LED module 10a, if each adjacent LED near and add the quantity of the plurality of LED2, it is possible to improve light output.In LED module 10a, if each adjacent LED sending the color LED 2c of the two or more types of different colourama is close, it is possible to improve the mixing of different colourama. Owing to LED module 10a includes the plurality of LED2 that sends the light with narrow solid angle, so light projector 30 can easily make the corresponding light of the plurality of LED2 through the focus 30az of parabolic curve to be reflected by reflecting member 37.

The structure of the apparatus body 31 that LED module 10a detailed below is placed in one.

As it is shown in figure 1, apparatus body 31 includes body 32, cap 33 and end plate 34. Apparatus body 31 is provided with installing component 35, diffuser plate 36, reflector 37a and protection board 38. In apparatus body 31, described body 32 and cap 33 are arranged to face each other. Apparatus body 31 has the outward appearance such as rectangular tube by body 32, cap 33 and installing component 35. Apparatus body 31 has the opening 30aa that the longitudinal direction along rectangular tube is formed. Opening 30aa is in a cross section view between the end of the end of body 32 and cap 33. The described end plate 34 that apparatus body 31 is provided with closes the two ends (participation Fig. 3) of rectangular tube.

Body 32 is in side view such as " L " shape. Body 32 includes gripper shoe 32a, projecting plate 32b and flange 32c. Gripper shoe 32a is shaped as elongated board. Gripper shoe 32a includes protuberance 37b prominent inside apparatus body 31. Protuberance 37b includes the smooth surface as the second reflecting surface 37br. Protuberance 37b arranges along the longitudinal direction of gripper shoe 32a. Gripper shoe 32a pericardium wherein draws together recess 32aa. Recess 32aa is formed in the outside of apparatus body 31. Gripper shoe 32a is formed with the first fixed part 39a in the side of recess 32aa. First fixed part 39a includes the hollow bulb such as " C " shape. Gripper shoe 32a includes engaging groove 32ak in the flange 32c side of the first fixed part 39a. Engaging groove 32ak is towards the inside of apparatus body 31. Engaging groove 32ak is arranged along the longitudinal direction of gripper shoe 32a. Gripper shoe 32a includes insertion groove 32ah in the projecting plate 32b side of the first fixed part 39a. Insertion groove 32ah is towards the inside of apparatus body 31. Insertion groove 32ah is arranged along the longitudinal direction of gripper shoe 32a. Gripper shoe 32a includes through hole 32aj in the flange 32c side of engaging groove 32ak. Through hole 32aj penetrates gripper shoe 32a in the thickness direction thereof. Each through hole 32aj is shaped as taper and its diameter is become narrow gradually towards the inside of apparatus body 31.

Projecting plate 32b is shaped as elongated board. Projecting plate 32b one end (the first end) on its width of gripper shoe 32a is arranged along the longitudinal direction of gripper shoe 32a. Projecting plate 32b stretches out from described first end with an obtuse angle relative to gripper shoe 32a. Projecting plate 32b is provided with insertion groove 32ba at its top end. Insertion groove 32ba is internal towards apparatus body 31. Insertion groove 32ba is arranged along the longitudinal direction of projecting plate 32b. Projecting plate 32b pericardium wherein draws together the second fixed part 39b. Second fixed part 39b highlights towards the inside of apparatus body 31. Second fixed part 39b is similar " C " shape in a cross section view. Flange 32c is arranged on the other end (the second end) of the other end as the described one end (the first end) on the width of gripper shoe 32a along the longitudinal direction of elongated support plate 32a.

As in figure 2 it is shown, flange 32c is provided with multiple (being two in shown example) through hole 32ca.Flange 32c is formed as allowing to screw in screw each through hole 32ca. Light projector 30 can be fixed on given base by the screw of the through hole 32ca of screw-in flange 32c. Body 32 is integrally formed by gripper shoe 32a, projecting plate 32b and flange 32c. The material of body 32 can be aluminum. Body 32 can be made by the extrusion molding of aluminum. Body 32 can be formed with oxide-film by anodic oxidation. The material of body 32 is not limited to aluminum, it is also possible to for synthetic resin material. Such as, body 32 scribbles berlin black pigment.

Cap 33 is shaped with the outward appearance such as elongated board. Cap 33 includes elongated flat board 33a. Flat board 33a length in their longitudinal direction is no better than the length on body 32 longitudinal direction. Cap 33 flat board 33a in the direction of the width in include the 3rd fixed part 39c in the heart. 3rd fixed part 39c highlights towards the inside of apparatus body 31. 3rd fixed part 39c has the outward appearance of similar " C " shape. Cap 33 one end on flat board 33a width is provided with groove of the notch 33aa. Groove of the notch 33aa is formed along the longitudinal direction of flat board 33a. Cap 33 includes dark slide 33b prominent inside apparatus body 31. Dark slide 33b covers LED light source 10 and the light from LED light source 10 both will not be shed without from opening 30aa by reflecting surface 37aa reflection. Dark slide 33b is formed along the direction intersecting (almost vertical) with the depth direction of groove of the notch 33aa, and described groove of the notch 33aa is inserted in the end of protection board 38. Dark slide 33b includes the 4th fixed part 39d. 4th fixed part 39d can be the C-shape hollow bulb that the inside with apparatus body 31 connects. Cap 33 includes insertion groove 33ak in the side of the 4th fixed part 39d of dark slide 33b. Insertion groove 33ak is formed along the longitudinal direction of flat board 33a. Cap 33 can be made by the extrusion molding of aluminum. The material of cap 33 is not limited to aluminum, it is also possible to for synthetic resin material.

End plate 34 is shaped with the profile such as elongated board. Each end plate 34 is provided with the through hole that multiple (being four in the example of fig. 3) penetrates on the thickness direction of himself. Each end plate 34 is attached to the apparatus body 31 of square tubulose by inserting the screw 34a that installs of himself through hole, thus the end on closure device body 31 longitudinal direction. In each end plate 34, two screw 34a is installed and is fixed to body 32 (referring to Fig. 1). It is to say, install screw 34a to be independently secured to described first and second fixed part 39a and 39b. It addition, in each end plate 34, install screw 34a for two and be fixed to cap 33 and be individually secured to described third and fourth fixed part 39c and 39d. Each end plate 34 can be made up of rustless steel, synthetic resin material etc.

Installing component 35 has the longitudinal direction along body 32 and is shaped as the profile of elongated board. Installing component 35 is similar " C " shape in a cross section view. Installing component 35 includes installing plate 35a, fixing plate 35b and cover plate 35c. Installing plate 35a is shaped as rectangular slab in plan view. Fixing plate 35b has the flat profile of similar elongated. Cover plate 35c has the flat profile of similar elongated. Installing plate 35a is arranged on the first end on fixing plate 35b width along the longitudinal direction of fixing plate 35b. Cover plate 35c is arranged on the second end of the other end as described first end on fixing plate 35b width along the longitudinal direction of fixing plate 35b. Cover plate 35c is upwardly extending with fixing side vertical for plate 35b.Installing plate 35a with the cover plate 35c equidirectional relative to fixing plate 35b on extend. Cover plate 35c be arranged such that installing plate 35a and cover plate 35c when fixing plate 35b further away from each other each other also further away from. Fixing plate 35b is provided with the installing hole 35ba penetrated in the thickness direction thereof. Installing component 35 is integrally formed by installing plate 35a, fixing plate 35b and cover plate 35c. Such as, installing component 35 can be made by the bending technique of metallic plate. Installing component 35 such as can be made up of aluminium sheet. The material of installing component 35 is not limited to aluminum, it is possible to adopting is such as copper or stainless metal material.

Installing component 35 is fixed to body 32 via screw 39f, and described screw 39f is fixed in the installing hole 35ba made by flange hole technology of fixing plate 35b. Installing component 35 is configured so to fixing plate 35b and is fixed to body 32 by the screw 39f and nut inserting installing hole 35ba. In the example of fig. 1, installing component 35 is constructed such that the circuit board 3 of LED module 10a is attached to installing plate 35a by lock screw 39e. The hole that the connection terminal 3t that installing plate 35a is provided with on second 3ba of circuit board 3 is inserted. Lock screw 39e inserts in the hole 3h (being three in shown example) of the circuit board 3 shown in Fig. 5. Such as, as in figure 2 it is shown, three LED module 10a are aligned to straight line along the longitudinal direction of body 32 on installing component 35. In installing component 35, LED module 10a is so fixed to body 32 so that LED module 10a is aligned to straight line so that having identical distance for each adjacent LED module 10a. Installing component 35 is not limited to three LED module 10a structure being arranged side by side. Installing component 35 can include one or more LED module 10a. Installing component 35 is made with metal material, can play heat sink function hence for LED module 10a. If the material of installing component 35 is the metal material compared with synthetic resin material with high-termal conductivity, light projector 30 can pass through installing component 35 and effectively outwards distribute the heat of LED module 10a.

LED module 10a is not limited to circuit board 3 and is attached directly to the such structure of installing plate 35a. The circuit board 3 of LED module 10a can be arranged on installing plate 35a by thermally conductive grease. When circuit board 3 is arranged on installing plate 35a by thermally conductive grease, even if the second of circuit board 3 3ba and installing plate 35a has irregular surface and also can effectively conduct heat. Thermally conductive grease can be formed by silicones and the metallic particles being contained therein and ceramic particle. Thermally conductive grease can improve the adhesion between circuit board 3 and installing plate 35a. The heat produced in LED2 can be effectively transmitted to installing plate 35a by thermally conductive grease by LED module 10a. LED module 10a is not limited to thermally conductive grease. (one or more) fin can be set between circuit board 3 and installing plate 35a. Fin can be made by also having except having good electrical insulating properties and heat conductivity elastomeric material springy. The example of fin is Silica hydrogel sheet. Silica hydrogel sheet is made up of the gel silicones with lower crosslink density. Fin is not limited to Silica hydrogel sheet, it is also possible to be made up of acrylic materials. Fin can have adhesiveness, it is thus possible to be used as bonding sheet.

Diffuser plate 36 is formed so that it covers the front of LED module 10a. Diffuser plate 36 is shaped as elongated flat board. Diffuser plate 36 is formed so that the two ends on its width fit in the engaging groove 32ak of the body 32 and insertion groove 33ak of cap 33 respectively.Diffuser plate 36 has light transmission. Preferably, diffuser plate 36 is configured to allow for the light of LED2 and effectively passes through. Such as, diffuser plate 36 can be made up of light transmissive material such as acrylic resin, polycarbonate resin or glass. Diffuser plate 36 can be made by injection moulding or similar technique. Diffuser plate 36 has light diffusing to reduce the rectilinearity of the light of LED module 10a. Diffuser plate 36 can convert the light from the LED2 each sending beam spot to send linear light line source, and wherein these LED2 are aligned to straight line along the longitudinal direction of elongated LED module 10a. In order to obtain light diffusing, diffuser plate 36 can be formed such that at least one surface of flat diffuser plate 36 is irregular surface. Diffuser plate 36 can comprise the photodiffusion material being positioned within diffuser plate 36. Photodiffusion material can include the material that refractive index is different from the material of diffuser plate 36. Preferably, diffuser plate 36 is arranged in the position of the focus 30az of parabolic curve by reflecting surface 37aa.

Reflecting member 37 is formed by reflector 37a and protuberance 37b. Reflector 37a includes pedestal 37a1, insertion section 37a2 and Embedded Division 37a3. Pedestal 37a1 is elongated along the longitudinal direction of body 32. Pedestal 37a1 is a part of the reflecting surface 37aa in a cross section view with parabolic curve. Pedestal 37a1 is formed as providing direct reflection. Pedestal 37a1 is formed as having specular reflectivity by metal film, and this metal film is formed on the surface of pedestal 37a1 by sputtering technology or deposition process.

Insertion section 37a2 is arranged on first end of pedestal 37a1 on the width of pedestal 37a1. Insertion section 37a2 is elongated along the longitudinal direction of pedestal 37a1. Insertion section 37a2 has the outward appearance of similar " L " shape in a cross section view. Embedded Division 37a3 is arranged on the second end of the other end as described first end on pedestal 37a1 width. Embedded Division 37a3 is elongated along the longitudinal direction of pedestal 37a1. Embedded Division 37a3 has the outward appearance of similar " V " shape in a cross section view. Reflector 37a can be made by the bending technique of metallic plate. The material of reflector 37a can be metal material, for instance ferrum or rustless steel. The material of reflector 37a is not limited to metal material, it is possible to be made up of synthetic resin material. Reflector 37a can be made up of the steel plate with the accurately machined aluminium foil of minute surface.

Reflector 37a is fixed to body 32. Reflector 37a is formed such that it allows insertion section 37a2 to insert in the insertion groove 32ba of projecting plate 32b. The Embedded Division 37a3 of reflector 37a fits into the insertion groove 32ah of gripper shoe 32a. As it is shown in figure 1, insertion section 37a2 fits into insertion groove 32ba, Embedded Division 37a3 fits into insertion groove 32ah, and thus reflector 37a is attached to body 32. When reflector 37a is attached to body 32, the surface of reflector 37a and the surface of protuberance 37b form the reflecting member 37 with reflecting surface 37aa, and the surface of described reflector 37a and the surface of protuberance 37b continue in this reflecting surface 37aa. Reflecting surface 37aa forms bending section parabolical as the either side in the both sides at the center of the axis of symmetry. Reflecting surface 37aa is formed so that focus 30az is positioned on the described axis of symmetry.

In light projector 30, the surface of reflector 37a corresponds to the first reflecting surface 37ar, and the surface of protuberance 37b corresponds to the second reflecting surface 37br. First reflecting surface 37ar is formed as providing direct reflection. Second reflecting surface 37br includes the matt coating of white being formed on the surface of protuberance 37b.Second reflecting surface 37br includes the matt coating of described white for protuberance 37b such that it is able to reflect light in the way of more spreading than the first reflecting surface 37ar. Second reflecting surface 37br is not limited to the matt coating of white being formed on the surface of protuberance 37b, it is possible to have irregular surface.

Protection board 38 is configured to close opening 30aa along the longitudinal direction of apparatus body 31. Protection board 38 is shaped as elongated flat board. Protection board 38 is configured such that the two ends of protection board 38 are kept by the insertion groove 32ba of body 32 and the groove of the notch 33aa of cap 33. Protection board 38 the first end in the width direction fits into insertion groove 32ba together with the insertion section 37a2 of reflector 37a. Protection board 38 closes opening 30aa, and has the dust reduction capability of the inside preventing dust entrance apparatus body 31. Protection board 38 closes opening 30aa, and has the water-proof function of the inside preventing water entrance apparatus body 31. Protection board 38 closes opening 30aa and the inside of energy keeping device body 31. Protection board 38 has light transmission. Preferably, protection board 38 is configured to allow for effectively passing through from the light of LED module 10a. Protection board 38 can be made up of light transmissive material, such as acrylic resin, polycarbonate resin or glass. Protection board 38 can be made by injection moulding or similar technique. In order to assemble the light from LED module 10a, protection board 38 can have lens function. Light projector 30 allows the light sending from LED module 10a and being reflected by reflecting member 37 to be sent to the outside of apparatus body 31 via protection board 38.

Adapter 30a is attached to light projector 30 and electrically connects with the connection terminal 3t of LED module 10a. As it is shown in fig. 7, each adapter 30a extends from one end in their longitudinal direction of corresponding apparatus body 31. Adapter 30a is used for feeding wiring to supply electric power to light projector 30 according to the order of sequence. In such feed wiring, light projector 30 can be configured such that electric wire is connected to another light projector 30 via current feed terminal from a light projector 30. Light projector 30 may be configured to electrically connect with power subsystem 40. Light projector 30 can be configured such that the plug-in connector 40a of the top end of the power line 40b being arranged on power subsystem 40 inserts in some in adapter 30a.

As it is shown in fig. 7, power subsystem 40 electrically connects with controller 41, described light projector 30 and external power source 50. External power source 50 is such as the AC power supplies of business. Power subsystem 40 includes the power circuit being configured to supply electric power to light projector 30. Power subsystem 40 supplies electric power by power line 40b to light projector 30. The example of power circuit includes filter circuit, booster circuit, reduction voltage circuit, control circuit etc. Power subsystem 40 is configured to the first circuit 3f of independently controlled each light projector 30, second circuit 3r, tertiary circuit 3g and the four circuit 3f. Power subsystem 40 is electrically connected with controller 41 by connecting line 41b. Power subsystem 40 is configured to control the luminescence of the LED light source 10 of each light projector 30 based on the signal carrying out self-controller 41. Controller 41 is configured to adjustment and supplies the electric power to light projector 30 from power subsystem 40, thus regulating tone and the light output of each light projector 30. Controller 41 regulates light output and the color of each light projector 30 by regulating the electric current of the LED2 flowing through each LED module 10a. Such as, controller 41 can be made up of microcomputer etc.

Fig. 8 illustrates the light projector 130 as the case of comparative examples compared with above-mentioned embodiment.In the drawings, the element of similar type is assigned with the accompanying drawing labelling identical with described in above-mentioned embodiment. In fig. 8, with first, second, third and fourth view directions 8A, 8B, 8C and 8D the direction of arrow as the example of people's gaze-direction of the light emission surface relative to light projector 130. The gaze-direction towards LED module 10 is represented with dotted arrow. In this example, the surface 38aa of protection board 38 is equivalent to light emission surface.

This light projector 130 difference from the light projector 30 of above-mentioned embodiment is in that it does not have dark slide 33b. Therefore, when people watch light emission surface along the first view directions 8A, LED module 10 can be immediately seen. Thus, if being immediately seen LED module 10, the degraded appearance of light projector 130.

Owing to the light projector 30 of above-mentioned embodiment includes dark slide 33b, even if therefore people see that on the first view directions 8A its light emission surface also is able to avoid being immediately seen LED module 10. In other words, light projector 30 includes LED module 10 and reflecting member 37 arranges apparatus body 31 therein. The light that apparatus body 31 is configured to allow for sending from LED light source 10 and being reflected by reflecting surface 37aa is outwards sent from opening 30aa. Apparatus body 31 is provided with the dark slide 33b before the optical axis direction 30ax of LED light source 10. Preferably, dark slide 33b covers LED light source 10 to stop at least some of of the path being directly toward opening 30aa of the respective ray of light from LED light source 10.

The light projector 130 of the case of comparative examples difference from the light projector 30 of above-mentioned embodiment is in that the whole reflecting surface 37aa of reflecting member 37 has consistent specular reflectivity. In light projector 130, owing to reflecting member 37 is the reflecting surface with consistent specular reflectivity, so when people observe light emission surface on the second view directions 8B, reflecting member 37 between the light and the light except this light except that directly send from LED2 and the part of close LED light source 10 has big luminance difference. In light projector 130, when multiple LED2 are aligned to straight line, multiple LED2 to be concerned with and especially send the light such as point source.

The light projector 30 of above-mentioned embodiment can pass through the first reflecting surface 37ar and effectively launch the light from LED light source 10 on predetermined transmitting direction 30ay. In light projector 30, it is provided with, near LED light source 10, the second reflecting surface 37br being configured to more spread light than the first reflecting surface 37ar. It is possible to suppress the reduction of light emission efficiency and suppress directly from the luminance difference between the LED2 light sent and the light except this light. Light projector 30 can suppress the irregularity in brightness between multiple LED location and the location between every kind of adjacent LED 2. In light projector 30, the second reflecting surface 37br than the first reflecting surface 37ar closer to LED light source 10. This is it can be avoided that multiple LED2 sends the light such as point source, namely suppresses granular illumination occur. In light projector 30, owing to the second reflecting surface 37br ratio the first reflecting surface 37ar arranged is closer to LED light source 10, it is possible to suppress the reduction of LED module 10a light output. Therefore, multiple LED2 can serve as line source.

The light projector 130 of the case of comparative examples difference from the light projector 30 of above-mentioned embodiment is in that, protection board 38 is arranged so that the vertical direction 38ay vertical with the surface 38aa of protection board 38 is almost consistent with launching direction 30ay.In light projector 130, when people observe light emission surface on the 3rd view directions 8C or the 4th view directions 8D, it can be seen that the LED light source 10 of reflection on reflecting surface 37aa. If seeing the LED light source 10 being reflected on reflecting surface 37aa, the degraded appearance of light projector 130.

The light projector 30 of above-mentioned embodiment includes dark slide 33b, and the angle formed by the vertical direction 38ay vertical with the surface 38aa of protection board 38 and transmitting direction 30ay is acute angle, is thus avoided that and sees the LED light source 10 of reflection on reflecting surface 37aa. It is to say, the light projector 30 of present embodiment includes the printing opacity protection board 38 arranged for apparatus body 31, thus its Guan Bi opening 30aa. Protection board 38 be arranged so that along with its further away from each other LED light source 10 time, the vertical direction 38ay vertical with the surface 38aa of protection board 38 further with launch direction 30ay separate. Preferably, protection board 38 is arranged so that the angle formed by the vertical direction 38ay vertical with the surface 38aa of protection board 38 and transmitting direction 30ay is acute angle.

Claims (3)

1. a light projector, it is characterised in that including:

LED light source; With

It is configured to reflect the reflecting member of the light from described LED light source,

Wherein

Described LED light source includes the multiple LED being aligned to straight line, and the optical axis direction of the plurality of LED is vertical with the alignment direction of the plurality of LED,

Described reflecting member has the reflecting surface that cross section is parabolic curve,

Described LED light source is arranged such that with described reflecting member the optical axis direction of described LED light source is vertical with launching direction, and described reflecting surface reflects the light along described optical axis direction of described LED light source along this transmitting direction,

Described reflecting surface includes being configured to reflect the first reflecting surface of the light from described LED light source and be configured to reflect the second reflecting surface of the light from described LED light source in the way of the light than described first reflective surface spreads more,

Described first reflecting surface is configured so as to the light along described optical axis direction of described LED light source through the focus of described parabolic curve, then irradiates described first reflecting surface, and

Described second reflecting surface on the described optical axis direction of described LED light source than described first reflecting surface closer to described LED light source.

2. light projector according to claim 1, it is characterized in that, including being provided with described LED light source and the apparatus body of described reflecting member, respective ray of light from described LED light source, by described reflective surface allows the opening from described apparatus body to send, wherein

Described apparatus body is provided with the dark slide before the described optical axis of described LED light source, and

Described dark slide covers described LED light source to stop at least some of of the path being directly toward described opening of the respective ray of light from described LED light source.

3. light projector according to claim 2, it is characterised in that the printing opacity protection board including arranging for described apparatus body is so that described printing opacity protection board closes described opening, wherein

Described protection board is arranged to along with its described further away from each other LED light source; the vertical direction vertical with the surface of described protection board is separated with described transmitting direction further, and the angle formed by the described vertical direction vertical with the surface of described protection board and described transmitting direction is acute angle.