Embodiment one
Referring to Fig. 2 A, Fig. 2 A is the structural representation of an embodiment of light-emitting device in the embodiment of the present invention. As shown in Figure 2 A, the light emitting device group 103 that light-emitting device comprises pcb board 105 and is arranged in the one side of pcb board 105. Light emitting device group comprises the luminous element of two kinds of different colours, and in the present embodiment, the luminous element of these two kinds of different colours is blue-ray LED and yellow light LED.
As shown in Figure 2 B, Fig. 2 B is the arrangement schematic diagram of the light emitting device group in the light-emitting device shown in Fig. 2 A. Light emitting device group 103 is arranged by least two string luminous elements, and in the present embodiment, each string luminous element on pcb board is all linearly arranged, and parallel side-by-side arrangement between different string, forms an array. Wherein with a string luminous element includes blue-ray LED 11 (being designated B in figure) and the luminous element of yellow light LED 12 (being designated Y in figure) two kinds of different colours, and in this string, all the arrange luminous element of luminous element wherein this first color of at least one second colors of the both sides of the luminous element of at least one the first color refers to the wherein a kind of of blue-ray LED and yellow light LED, and the luminous element of second colors refers to another in blue-ray LED and yellow light LED. Concrete for example the first color is B (Blue, blue), and second colors is Y (Yellow, yellow). Such as, in the part of a string luminous element arranges, the color alignment of luminous element can be YBY, YYBBYY, or a continuously arranged Y is arranged in order with a continuously arranged B arbitrarily and a continuously arranged Y arbitrarily arbitrarily.
With, in the luminous element of a string same color, the direction that the positive pole fitting of each luminous element points to the negative pole fitting of this luminous element is consistent with a trend of this string. Specifically with the left side in the light emitting device group shown in Fig. 2 B first go here and there luminous element arrangement for example. In light emitting device group in fig. 2b, blue-ray LED 11 comprises positive pole fitting 11a and negative pole fitting 11b, and yellow light LED 12 comprises positive pole fitting 12a and negative pole fitting 12b; And each blue-ray LED all adopts the packaged type the same with blue-ray LED 11 in this light emitting device group, each yellow light LED all adopts the packaged type the same with yellow light LED 12. In this first string, the positive and negative electrode fitting of all blue-ray LEDs is all towards the right side of this string, and the positive and negative electrode fitting of all yellow light LEDs is all towards the left side of this string; Then in this first string luminous element, the trend that the positive pole fitting of each blue-ray LED points to the direction of its negative pole fitting all downward with this string is consistent, and the direction that the positive pole fitting of each yellow light LED points to its negative pole fitting is all consistent with this string trend upwards.
When therefore often a string luminous element being welded on a printed circuit, the wiring that the luminous element of the first color is connected is positioned at the same side of this string, the wiring that the luminous element of second colors is connected is positioned at another side of this string. Specifically, as shown in Figure 2 C, Fig. 2 C is the schematic diagram of an embodiment of the wiring diagram of the light-emitting device shown in Fig. 2 A. In the light emitting device group shown in Fig. 2 C, along the flow direction of electric current, in going here and there first, the wiring of all blue-ray LEDs series connection all connects to get off along the right side of this string successively, and in going here and there first, the wiring of all yellow light LEDs series connection all connects up successively along the left side of this string; In going here and there the 2nd, the wiring of all blue-ray LEDs series connection all connects up successively along the left side of this string, and in going here and there the 2nd, the wiring of all yellow light LEDs series connection all connects to get off along the right side of this string successively; Meanwhile, it is positioned at the wiring on the right side of the first string and it is positioned at the wiring on the left of the 2nd string and be parallel to each other and keep the safe distance between electric wire. Like this, avoid PCB intersects mutually with the wiring between each luminous element in a string.
Therefore, with in a string luminous element, in the luminous element of same color, to point to the direction of the negative pole fitting of this luminous element consistent with a trend of this string for the positive pole fitting of each luminous element, and the wiring that the luminous element of the first color is connected is positioned at the side of this string, the wiring that the luminous element of second colors is connected is positioned at another side of this string. Like this, when being welded on a printed circuit by often a string luminous element, the wiring that the luminous element of one of them color is connected is positioned at the same side of this string, another side that the wiring that the luminous element of another color is connected is positioned at this string, to avoid on PCB the wiring between each luminous element mutually to intersect; Meanwhile, in often a string, all arrange the luminous element of at least one another kind of color in the both sides of the luminous element of at least one a kind of color, so that the light mixing that the luminous element of different colours sends, to improve the homogeneity of the light that light-emitting device sends.
Preferably, in the present invention, in any two nearest two strings comprising same color luminous element, the direction of the negative pole fitting that the positive pole fitting in direction and the luminous element of this kind of color in another string that the positive pole fitting of the luminous element of wherein a string a kind of color points to the negative pole fitting of this luminous element points to this luminous element is contrary, connects with the luminous element of enable same color in mutually equidirectional one end of this two string is to two strings. Specifically, in fig. 2 c, the direction that in first string, the positive pole fitting of all blue-ray LEDs points to its negative pole fitting is all pointed to down, the direction that in 2nd string, the positive pole fitting of all blue-ray LEDs points to its negative pole fitting is all pointed to, so that the wiring that in the first string, the negative pole fitting 13b of last blue-ray LED 13 draws can be directly connected on the positive pole fitting 15a of last blue-ray LED 15 in the 2nd string, and can not intersect with the wiring being positioned at the 2nd string left side. Identical, the direction that in first string, the positive pole fitting of all yellow light LEDs points to its negative pole fitting is all pointed to, the direction that in 2nd string, the positive pole fitting of all yellow light LEDs points to its negative pole fitting is all pointed to down, so that the wiring that in the first string, the positive pole fitting 14a of last yellow light LED 14 draws can be directly connected on the negative pole fitting 16b of last yellow light LED 16 in the 2nd string, and can not intersect with the wiring being positioned at the 2nd string right side.
It is understood that when the luminescent device of the first color and second colors is mixed to get more even, the light that light emitting device group sends is mixed to get more even. It is preferred, therefore, that in the present invention, the color of two luminous elements of arbitrary neighborhood is different at least partly in often a string, and the mixed light of these two kinds of color of light is comparatively even; When the color of two luminous elements of every a string middle arbitrary neighborhood is different, in this string, the mixed light of two kinds of color of light is more even. Specifically, as shown in Figure 2 C, in every a string luminous element, the color of any two adjacent luminous elements comprises blueness and yellow, and the luminous element not having two same colors is adjacent.
Preferably, in the present invention, being perpendicular on the direction often gone here and there on edge, the color of two luminous elements of at least part of arbitrary neighborhood is different, so that the light that light emitting device group sends is more even. Specifically, as described in Fig. 2 C, in the array that light emitting device group arranges, along being perpendicular on the direction often gone here and there, namely, in the every a line in figure, the color of the luminous element of arbitrary neighborhood comprises yellow and blueness, and the luminous element not having two same colors is adjacent.
For convenience of description, in the examples below, the luminous element of different colours light is described by the arrangement mode all adopting the color of two luminous elements of every a string middle arbitrary neighborhood different. In practice, it not very high occasion in the degree of uniformity requirement that different colours is mixed, it is also possible to adopt other arranging situations described above.
Referring to Fig. 3, Fig. 3 is the schematic diagram of another embodiment of the wiring diagram of the light-emitting device shown in Fig. 2 A. With the wiring schematic diagram of the light-emitting device shown in Fig. 2 C the difference is that, in the present embodiment, the positive and negative electrode fitting with the luminous element of a string middle different colours can also towards the same side of this string. Like this, by the wiring of the first color light emitting element series connection along its positive and negative electrode fitting towards the side of this string; And the wiring that second colors luminous element is connected along its positive and negative electrode fitting carried on the back to the side of this string time, connected up the gap through this second colors luminous element and the first color light emitting element being adjacent to its positive and negative electrode fitting carried on the back to the side of this string, and again from the gap between this first color light emitting element and another second colors luminous element being adjacent to the positive and negative electrode fitting of this second colors luminous element, so that lay respectively at the both sides of this string with the wiring of the luminous element of two kinds of different colours in a string. Specifically with the wiring of left side in the light emitting device group shown in Fig. 3 first string luminous element for example. In left side first is gone here and there, the positive and negative electrode fitting of all blue-ray LEDs and all yellow light LEDs is all towards the left side of this string. Then along the flow direction of electric current, in this string, between all yellow light LEDs, the wiring of series connection all connects up successively along the left side of this string, and in this string, between all blue-ray LEDs, the wiring of series connection all connects up successively along the right side of this string. Concrete wiring is with the wiring between blue-ray LED 17 adjacent successively from top to bottom, yellow light LED 18 and blue-ray LED 19 for example. In blue-ray LED 17 adjacent successively from top to bottom, yellow light LED 18 and blue-ray LED 19, when the positive pole fitting of blue-ray LED 17 is connected to the negative pole fitting of blue-ray LED 19, this wiring through the position blue-ray LED 17 and yellow light LED 18 and along the right side of yellow light LED 18 to the position between yellow light LED 18 and blue-ray LED 19, then through the position yellow light LED 18 and blue-ray LED 19 to the negative pole fitting of blue-ray LED 19. The wiring of blue-ray LED, yellow light LED and blue-ray LED that in this string, other are adjacent successively is all as consistent in this citing. And the wiring of all yellow light LEDs series connection is consistent with the wiring diagram shown in Fig. 2 C in this string, do not repeat them here.
Wiring method shown in Fig. 2 C is compared with the wiring method shown in Fig. 3, and the wiring method in Fig. 2 C is easier, and owing to need not connect up with between adjacent two different LED in a string, therefore arrangement can be compacter; And in the light emitting device group shown in Fig. 3 due to the different colours luminous element in a string all towards the same side, this is easier in complete processing.
Referring to Fig. 4, Fig. 4 is the schematic diagram of another embodiment of the light-emitting device of the present invention. In the present embodiment, each luminous element in light emitting device group adopts another kind of packaged type, and the positive pole fitting of each luminous element and negative pole fitting lay respectively at the both sides in the heat radiation district of this luminous element. Although it is different from the LED mode in above embodiment, but in the wiring of pcb board still it is, with in the luminous element of a string same color, the direction that the positive pole fitting of each luminous element points to the negative pole fitting of this luminous element is consistent with a trend of this string, and wherein the wiring of the luminous element series connection of the first color is positioned at the same side of this string, and the wiring that the luminous element of second colors is connected is positioned at another side of this string. Specifically it is exemplified below.
In the present embodiment, light emitting device group comprises blue-ray LED and yellow light LED, wherein from figure the positive pole fitting of the blue-ray LED in odd number string left-hand digit and yellow light LED to point to the direction of its negative pole fitting all downward, the direction that blue-ray LED in even number string and the positive pole fitting of yellow light LED point to its negative pole fitting is all upwards. And the wiring that blue-ray LEDs all in this string are together in series is positioned at the left side of this string by odd number string, the wiring that yellow light LEDs all in this string are together in series is positioned at the right side of this string; And the wiring that blue-ray LEDs all in this string are together in series is positioned at the right side of this string by even number string, the wiring that yellow light LEDs all in this string are together in series is positioned at the left side of this string. And the wiring that the same color luminous element in two adjacent strings is together in series lays respectively at lower section and the top of the array that this light emitting device group is formed.
Referring to Fig. 5, Fig. 5 is the schematic diagram of another embodiment of the light-emitting device of the present invention. In the present embodiment, light emitting device group comprises the luminous element of the different packaged type of two shown in Figure 1A and Figure 1B kind.
Specifically for example, during the left side first of light emitting device group is gone here and there, blue-ray LED comprises the blue-ray LED 51 of the packaged type shown in Figure 1A, also comprising the blue-ray LED 51 of the packaged type shown in Figure 1B, the direction that the positive pole fitting of the LED of these two kinds of packaged types points to its negative pole fitting is all consistent with a trend of this string. Showing as in detail in this figure, the positive pole fitting 51a and negative pole fitting 51b of blue-ray LED 51 all lays respectively at above and below the heat radiation district of this LED towards the positive pole fitting 52a and negative pole fitting 52b of the right side blue-ray LED 52 of this string. When connecting up, in figure, the wiring of all blue-ray LEDs series connection in the string of left side first is all positioned at the right side of this string.
It is understood that in the present embodiment, another color light emitting element can also comprise the LED of different packaged type, as long as the direction that the positive pole fitting making the luminous element with a string middle same color points to its negative pole fitting is unanimously.
Referring to Fig. 6, Fig. 6 is the schematic diagram of another embodiment of light-emitting device in the embodiment of the present invention. With above embodiment the difference is that, in the present embodiment, light emitting device group 603 comprises the luminous element of three kinds of colors, illustrates taking blue-ray LED 63, green light LED 62 (representing in the drawings as G) and red-light LED 61 (representing in the drawings for R). Light emitting device group 603 comprises first kind string and the 2nd class string, and wherein same class string refers to comprise the string of same color luminous element in continuously arranged at least partly two color light emitting element of such string. First kind string comprises red-light LED 61 and green light LED 62,2nd class string comprises green light LED 62 and blue-ray LED 63, at least one the 2nd class string and all arrange in the both sides of at least one first kind string, or the both sides of at least one the 2nd class string all arrange at least one first kind string. Specifically for example represent first kind string with M, N represents the 2nd class string, then at least part of arranged array of light emitting device group, comprise arranged array MNM, NMN, MMNNMM or NNMMNN, or a continuously arranged M is arranged in order with a continuously arranged N arbitrarily and a continuously arranged M arbitrarily arbitrarily, or a continuously arranged N is arranged in order with a continuously arranged M arbitrarily and a continuously arranged N arbitrarily arbitrarily.
It is understood that when the luminous element of first kind string and the 2nd class string is mixed to get more even, the light that light emitting device group sends is mixed to get more even. It is preferred, therefore, that the classification of two strings of arbitrary neighborhood is different at least partly in the array of this light emitting device group arrangement, the mixed light of these two kinds of color of light is comparatively even; When including first kind string and the 2nd class string in two strings of arbitrary neighborhood, in this array, the mixed light of three kinds of color of light is more even. As shown in Figure 6, the odd number string that in figure, left-hand digit rises is first kind string, and even number string is the 2nd class string so that two strings of arbitrary neighborhood comprise inhomogeneity string. For convenience of description, in the examples below, the luminous element of different colours light is described by the arrangement mode all adopting two strings of arbitrary neighborhood to comprise different classes of string. In practice, it not very high occasion in the degree of uniformity requirement that different colours is mixed, it is also possible to adopt other arranging situations described above.
Referring to Fig. 7, Fig. 7 is the schematic diagram of another embodiment of light-emitting device in the present invention. With above embodiment the difference is that, four angles place of the array arrangement of the light emitting device group in the present embodiment can remove luminous element, so that the form fit of the light beam that sends of light emitting device group and round lens. In practice, owing to the lens in the light path being placed on light-emitting device are circular, these lens can only collect the stray light of the light that the luminous element at four angles place of the array arrangement of light emitting device group sends, and the utilization ratio of the light that the luminous element that therefore these four angles go out sends is lower. Therefore, in the present embodiment, four angles place of the array arrangement of light emitting device group removes some luminous elements, so that the mating shapes of the round lens of the shape of light emitting device group arrangement formation, to improve the utilization ratio of the light beam that light emitting device group sends.
Referring to Fig. 8, Fig. 8 is the schematic diagram of another embodiment of light-emitting device in the present invention. In the present embodiment, also comprising the 3rd class string in light emitting device group 803, the 3rd class string comprises blue-ray LED 63 and red-light LED 61, like this, make the LED distribution of different colours in light emitting device group 203 more even, to improve the homogeneity of the light that light-emitting device sends.
Preferably, three strings of arbitrary neighborhood include first, second, and third class string, so that different colours light is mixed to get more even. Preferably, being perpendicular on the direction often gone here and there on edge, the color of three luminous elements of at least part of arbitrary neighborhood is different.
Referring to Fig. 9, Fig. 9 is the schematic diagram of another embodiment of light-emitting device in the present invention. Light emitting device group also comprises white light LEDs in the present embodiment, to improve the brightness of light-emitting device. As shown in Figure 9, light emitting device group 903 comprises first kind string and the 2nd class string, this first kind string comprises blue-ray LED 93 and white light LEDs 94,2nd class string comprises green light LED 92 and red-light LED 91, at least one the 2nd class string and all arrange in the both sides of at least one first kind string, or the both sides of at least one the 2nd class string all arrange at least one first kind string.
Due to often kind of color that often kind of color in two kinds of colors of first kind string is all different from two kinds of colors of the 2nd class string, it is therefore preferred to, the color forming arbitrarily square adjacent four luminous element is different, so that different colours light is mixed to get more even. Specifically for example, first kind string and the 2nd class string cross arrangement so that include this two classes string in two strings of arbitrary neighborhood. In often a string, the luminous element cross arrangement of two different colours so that include the luminous element of two different colours in two luminous elements of arbitrary neighborhood.
In the present embodiment, white light LEDs 94 can also be yellow light LED, or part white light LEDs 94 is substituted by yellow light LED.
Referring to Figure 10 A, Figure 10 A is the schematic diagram of another embodiment of light-emitting device in the present invention. In the present embodiment, with the luminous element also comprising the 3rd color in a string luminous element. As shown in Figure 10 A, comparing the light emitting device group shown in Fig. 7, the present embodiment all adds the luminous element of the 3rd color at the two ends of the every a string luminous element in string luminous element at least partly.
Specifically for example, comparing the light emitting device group shown in Fig. 7, the present embodiment adds white light LEDs 101 at often a string two ends. In figure, the positive and negative electrode fitting of the white light LEDs in odd number string from left-hand digit is towards the left side of this string, and the direction that the positive pole fitting of this white light LEDs points to its negative pole fitting is upwards; The positive and negative electrode fitting of the white light LEDs in even number string towards the right side of this string, and the positive pole fitting of this white light LEDs to point to the direction of its negative pole fitting downward so that the white light LEDs being positioned at the same side of the array that this light emitting device group is formed can be together in series.
In the present embodiment, owing to the white light LEDs of the same side by being positioned at the array that light emitting device group is formed is together in series mutually, and do not need to connect this white light LEDs with other colors in each string, therefore the positive and negative electrode fitting of this white light LEDs towards with the positive and negative electrode fitting of the luminous element of other colors in each string at its place towards being independent of each other.
Referring to Figure 10 B, Figure 10 B is the schematic diagram of another embodiment of light-emitting device in the embodiment of the present invention. In the present embodiment, the positive and negative electrode fitting of each white light LEDs 101 can also all carry on the back the string to its place, all upward, the positive and negative electrode fitting of white light LEDs being positioned at the downside of array is all downward for the positive and negative electrode fitting of the white light LEDs of the upside of the array that the light emitting device group being namely arranged in figure is formed; So that the white light LEDs being positioned at the both sides of the array that this light emitting device group is formed more easily is together in series.
Referring to Figure 10 C, Figure 10 C is the schematic diagram of another embodiment of light-emitting device in the embodiment of the present invention. In the present embodiment, a string white light LEDs is respectively placed in the side, left and right of the array of light emitting device group formation in the drawings, i.e. this two string white light LEDs and other respectively string luminous element parallel side-by-side arrangements, and the white light LEDs in wherein often going here and there is connected mutually. Like this, when can avoid the upper and lower sides of the array that the light emitting device group that white light LEDs is arranged in figure in Figure 10 B formed, a string white light LEDs owing to mutually connecting is mutually vertical with other strings so that the wiring of the wiring of other strings and the string at white light LEDs place has point of crossing.
In the present embodiment, the luminous element all adding the 3rd color towards a mutually equidirectional one end of luminous element can also gone here and there at least partly, and the luminous element all adding the 4th color towards another mutually equidirectional one end at this at least part of string luminous element; Or the luminous element of the 3rd color is only added in mutually equidirectional one end for string luminous element at least partly; As long as making the arrangement of at least part of continuously arranged luminous element in every a string luminous element as described by above embodiment.
In the present embodiment, it is also possible to comprise other class strings, the combination of other any two kinds of different colours luminous elements that these other class strings comprise in blue-ray LED, green light LED, red-light LED and white light LEDs except first kind string and the 2nd class string.