Light source capable of inhibiting excessive growth of eye axis and suitable for secondary light distribution and lamp

Abstract

The utility model discloses a light source suitable for secondary light distribution and capable of inhibiting excessive growth of an eye axis, a heat dissipation copper column is arranged in a lamp bead, and the heat dissipation copper column not only can be directly used as a conductive structure to electrically connect a chip to an anode pin, but also can achieve a better heat dissipation effect. The conductive layer is embedded in the support, the receding groove is formed in the upper surface of the support, the exposed area of the conductive layer on the surface of the support can be greatly reduced, and therefore the anti-static performance and the compression resistance of the lamp bead can be greatly improved. In addition, the light-emitting spectrum of the lamp bead is a continuous spectrum of 360-850 nm, and the effect of inhibiting excessive growth of the eye axis can be achieved. And the difficulty of secondary optical light distribution of the light source can be greatly reduced by reducing the spectral energy ratio range corresponding to the light of each wavelength section. In addition, the utility model further discloses a lamp provided with the light source capable of inhibiting excessive growth of the eye axis and suitable for secondary light distribution.

Description

Technical Field

[0001] The utility model relates to the technical field of photobiological effects, and particularly relates to a light source and a lamp suitable for secondary light distribution that can inhibit excessive growth of the eye axis. Background Art

[0002] Excessive growth of the eye axis is the key factor in the occurrence and development of myopia, and axial myopia is the most common type of juvenile myopia. Through research, it is confirmed that under the conditions of normal indoor illumination requirements, using a light source with a spectral range of 360nm - 800nm for lighting can significantly slow down the excessive growth in the eye axis development of juvenile macaques, thereby reducing the incidence of myopia. However, when applying the above-mentioned light source to actual lamps, secondary optical light distribution needs to be carried out according to the spectrum that can inhibit excessive growth of the eye axis. However, in the currently developed light sources that can inhibit excessive growth of the eye axis, the spectral energy range corresponding to the light of each wavelength is relatively large, which greatly increases the difficulty of secondary optical light distribution.

[0003] In addition, for the lamp beads used in existing light sources, the positive and negative electrodes are usually arranged on both sides of the chip and horizontally connected to the positive and negative electrodes through gold wires, and then the electrodes are electrically connected to the positive and negative pins on the outside. This structure has poor heat dissipation performance and usually requires the introduction of additional heat dissipation devices, and the structure is relatively complex. In addition, the positive and negative poles of this structure are directly exposed on both sides of the chip, which easily affects the anti-static performance and compressive resistance of the lamp beads. Summary of the Invention

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, the utility model provides a light source suitable for secondary light distribution that can inhibit excessive growth of the eye axis, which has good heat dissipation performance and anti-static performance, and can inhibit excessive growth of the eye axis, which is beneficial to reducing the difficulty of secondary optical light distribution of the light source.

[0005] The utility model also provides a lamp with the above-mentioned light source suitable for secondary light distribution that can inhibit excessive growth of the eye axis.

[0006] A light source suitable for secondary light distribution that can inhibit excessive growth of the eye axis according to an embodiment of the present invention includes at least one lamp bead. The lamp bead includes: a bracket provided with a positive electrode pin and a negative electrode pin extending outward; a heat dissipation copper column embedded in the bracket and extending upward to the upper surface of the bracket, and the heat dissipation copper column is electrically connected to the positive electrode pin; a chip mounted on the upper surface of the heat dissipation copper column and electrically connected to the heat dissipation copper column; a conductive layer embedded in the bracket and isolated from the heat dissipation copper column, and a relief groove extending downward to the conductive layer is formed on the upper surface of the bracket. The chip is electrically connected with a gold wire, and the other end of the gold wire extends to the relief groove and is electrically connected to the conductive layer, and the conductive layer is electrically connected to the negative electrode pin; a lens is provided on the bracket and covers the periphery of the chip, and a fluorescent glue is filled between the lens and the bracket, and the fluorescent glue covers the periphery of the chip; wherein, the lamp bead can emit light with a continuous spectrum of 360nm - 850nm. After the spectral energy of the spectrum is normalized to the maximum value, the spectral energy ratio distribution of the spectrum is between curve A and curve B. In curve A and curve B, the X-axis is the wavelength and the Y-axis is the spectral energy ratio after normalization. Among them, when the wavelength is 360nm - 637nm, as the wavelength increases, the spectral energy ratio of curve A gradually increases from 0.05 to 1.05, and the spectral energy ratio of curve B gradually increases from 0.005 to 0.8; when the wavelength is 637nm - 850nm, as the wavelength increases, the spectral energy ratio of curve A gradually decreases from 1.05 to 0.01, and the spectral energy ratio of curve B gradually decreases from 0.8 to 0.

[0007] The light source suitable for secondary light distribution that can inhibit excessive growth of the eye axis according to an embodiment of the present invention has at least the following beneficial effects:

[0008] In the light source of the embodiment of the present utility model, the heat dissipation copper column can not only directly serve as a conductive structure to electrically connect the chip to the positive electrode pin, but also transfer the heat generated by the chip outward, having a good heat dissipation effect. By embedding the conductive layer inside the bracket and providing a relief groove on the upper surface of the bracket, the exposed area of the conductive layer on the surface of the bracket can be greatly reduced, thereby greatly improving the antistatic performance and compressive performance of the lamp bead. In addition, the lamp bead can emit light with a continuous spectrum in the wavelength range of 360nm - 850nm. By dividing the wavelength range of 360nm - 850nm into multiple wavelength segments and integrating the light rays of each wavelength segment to form a complete continuous spectrum, it can play a role in slowing down the excessive growth in the development of the eye axis and reducing the incidence of myopia. Among them, by limiting the range of the spectral energy ratio formed by the light rays of each wavelength segment between curve A and curve B, the Y-axis difference corresponding to each wavelength between curve A and curve B is greatly reduced compared with the prior art, thereby greatly reducing the range of the spectral energy ratio corresponding to the light rays of each wavelength segment. Thus, the difficulty of secondary optical light distribution can be greatly reduced, facilitating a more reasonable guidance of the actual production of the light source.

[0009] According to some embodiments of the present utility model, curve A is formed by connecting the coordinate points (360, 0.05), (380, 0.15), (400, 0.25), (430, 0.45), (447, 0.5), (480, 0.55), (550, 0.84), (600, 0.98), (637, 1.05), (680, 0.86), (720, 0.44), (755, 0.2), (780, 0.1), (800, 0.05), (850, 0.01) in sequence; curve B is formed by connecting the coordinate points (360, 0.005), (380, 0.01), (400, 0.01), (430, 0.02), (447, 0.08), (480, 0.12), (550, 0.45), (600, 0.67), (637, 0.8), (680, 0.52), (720, 0.15), (755, 0.03), (780, 0.02), (800, 0.01), (850, 0) in sequence.

[0010] According to some embodiments of the present utility model, in the lamp bead, a convex portion that protrudes outward and is embedded inside the bracket is provided on the outer peripheral wall of the heat dissipation copper column.

[0011] According to some embodiments of the present utility model, an insulating pad is provided at the bottom of the heat dissipation copper column, and the insulating pad is provided on the bracket and extends downward to the lower surface of the bracket.

[0012] According to some embodiments of the present utility model, a pad connected to the conductive layer is disposed in the relief groove, and the gold wire is electrically connected to the pad.

[0013] According to some embodiments of the present utility model, part of the fluorescent glue is filled in the relief groove, and the pad and the gold wire are both embedded in the fluorescent glue.

[0014] According to some embodiments of the present utility model, the number of the lamp beads is multiple, and at least two of the lamp beads emit light in different wavelength bands, and all the lamp beads can combine to emit light of the continuous spectrum with a wavelength of 360 nm - 850 nm.

[0015] According to some embodiments of the present utility model, it further includes at least two substrates, at least two of the lamp beads are electrically mounted on each substrate, all the substrates are electrically connected in series in sequence, the light emitted by all the lamp beads on at least one substrate combines to have a wavelength band of 360 nm - 637 nm, and the light emitted by all the lamp beads on at least one substrate combines to have a wavelength band of 637 nm - 850 nm.

[0016] According to some embodiments of the present utility model, the chip is an LED chip or a laser chip.

[0017] The lamp according to the embodiments of the present utility model is provided with a light source suitable for secondary light distribution that can inhibit excessive growth of the eye axis according to any one of the above embodiments.

[0018] The lamp according to the embodiments of the present utility model has at least the following beneficial effects:

[0019] By adopting the lamp of the embodiments of the present utility model, the lamp beads used in the light source have good heat dissipation performance, anti-static performance, and compressive performance, which is beneficial to improving the electrical performance of the lamp and extending the service life of the lamp. In addition, the emission spectrum of the light source is a continuous spectrum of 360 nm - 850 nm, which can slow down the excessive growth during eye axis development, reduce the incidence of myopia, and by narrowing the range of the spectral energy ratio corresponding to each wavelength band in the emission spectrum, the difficulty of secondary optical light distribution can be greatly reduced, making the actual production of the light source more convenient.

[0020] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0022] Figure 1Schematic diagram of the lamp bead according to an embodiment of the present utility model;

[0023] Figure 2 Cross-sectional schematic diagram of the lamp bead according to an embodiment of the present utility model;

[0024] Figure 3 Schematic diagram of curve A and curve B according to an embodiment of the present utility model;

[0025] Figure 4 Schematic diagram of the light source according to an embodiment of the present utility model;

[0026] Figure 5 Another schematic diagram of the light source according to an embodiment of the present utility model.

[0027] Reference numerals:

[0028] Lamp bead 100, bracket 110, positive electrode pin 111, negative electrode pin 112, chip 120, heat dissipation copper column 130, convex portion 131, insulating pad 132, conductive layer 140, relief groove 150, pad 151, gold wire 160, lens 170, substrate 180. Detailed implementation manners

[0029] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0031] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0032] In the description of the present utility model, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0033] Referring to Figures 1 to 5 , an embodiment of the present utility model provides a light source suitable for secondary light distribution that can inhibit excessive growth of the eye axis, including at least one lamp bead 100. The lamp bead 100 includes a bracket 110, a heat dissipation copper column 130, a chip 120, a conductive layer 140, and a lens 170. The bracket 110 is provided with a positive electrode pin 111 and a negative electrode pin 112 extending outward; the heat dissipation copper column 130 is embedded in the bracket 110 and extends upward to the upper surface of the bracket 110, and the heat dissipation copper column 130 is electrically connected to the positive electrode pin 111; the chip 120 is installed on the upper surface of the heat dissipation copper column 130 and is electrically connected to the heat dissipation copper column 130; the conductive layer 140 is embedded in the bracket 110 and is isolated from the heat dissipation copper column 130. A relief groove 150 extending downward to the conductive layer 140 is formed on the upper surface of the bracket 110. The chip 120 is electrically connected to a gold wire 160, and the other end of the gold wire 160 extends to the relief groove 150 and is electrically connected to the conductive layer 140. The conductive layer 140 is electrically connected to the negative electrode pin 112; the lens 170 is provided on the bracket 110 and covers the outer periphery of the chip 120. A fluorescent glue (not shown in the figure) is filled between the lens 170 and the bracket 110, and the fluorescent glue covers the outer periphery of the chip 120; wherein, the lamp bead 100 can emit light with a continuous spectrum having a wavelength of 360 nm - 850 nm. After performing maximum normalization processing on the spectral energy of the spectrum, a spectral energy ratio is obtained. The spectral energy ratio of the spectrum is distributed between curve A and curve B. Curve A is a curve showing the change of the upper limit of the spectral energy ratio after normalization with the increase of the wavelength, and curve B is a curve showing the change of the lower limit of the spectral energy ratio after normalization with the increase of the wavelength. In curve A and curve B, the X-axis is the wavelength, and the Y-axis is the spectral energy ratio after normalization. Among them,

[0034] When the wavelength is 360 nm - 637 nm, as the wavelength increases, the spectral energy ratio of curve A gradually increases from 0.05 to 1.05, and the spectral energy ratio of curve B gradually increases from 0.005 to 0.8;

[0035] When the wavelength is 637 nm - 850 nm, as the wavelength increases, the spectral energy ratio of curve A gradually decreases from 1.05 to 0.01, and the spectral energy ratio of curve B gradually decreases from 0.8 to 0.

[0036] In the light source of the embodiment of the present utility model, by improving the structure of the lamp bead 100, a heat dissipation copper column 130 is embedded in the bracket 110, the chip 120 is directly installed on the heat dissipation copper column 130, and the heat dissipation copper column 130 is electrically connected to the positive electrode pin 111, so that the heat dissipation copper column 130 can not only directly serve as a conductive structure to electrically connect the chip 120 to the positive electrode pin 111, but also transfer the heat generated by the chip 120 outward. Therefore, it is possible to dissipate heat from the lamp bead 100 well without introducing an additional heat dissipation structure, making the structure of the lamp bead 100 simpler. Secondly, by embedding the conductive layer 140 electrically connected to the negative electrode pin 112 inside the bracket 110 and opening a relief groove 150 on the upper surface of the bracket 110, one end of the gold wire 160 is connected to the chip 120, and the other end extends to the relief groove 150 and is connected to the conductive layer 140, thereby realizing the electrical connection between the chip 120 and the negative electrode pin 112, and this structure can greatly reduce the area of the conductive layer 140 exposed on the surface of the bracket 110, thus greatly improving the anti-static performance and compressive performance of the lamp bead 100.

[0037] In addition, in the light source of the embodiment of the present utility model, the lamp bead 100 can emit light with a continuous spectrum in the wavelength range of 360nm - 850nm. That is, when the light emitted by the chip 120 irradiates the fluorescent glue, it can excite the fluorescent material in the fluorescent glue and form light with a continuous spectrum in the range of 360nm - 850nm, and then emit it through the lens 170. By dividing the wavelength range of 360nm - 850nm into multiple wavelength segments and integrating the light of each wavelength segment to form a complete continuous spectrum, the embodiment of the present utility model can play a role in slowing down the excessive growth in the development of the eye axis and reducing the incidence of myopia. Among them, by limiting the range of the spectral energy ratio formed by the light of each wavelength segment between curve A and curve B, the Y-axis difference corresponding to each wavelength between curve A and curve B is greatly reduced compared with the prior art, that is, the range of the spectral energy ratio corresponding to the light of each wavelength segment is greatly narrowed, thereby greatly reducing the difficulty of secondary optical light distribution and facilitating a more reasonable guidance of the actual production of the light source. And compared with the prior art that uses a light source with a spectral range of 360nm - 800nm for lighting, the light source of the embodiment of the present utility model also increases the spectral range of 800nm - 850nm. The light with a spectral range of 800nm - 850nm can improve the blood circulation in the fundus of the eye, promote the secretion of dopamine by retinal pigment epithelial cells, increase the choroid thickness, raise the oxygen content in the sclera, thereby strengthening the sclera, achieving the effect of inhibiting the abnormal growth of the eye axis, and further being able to inhibit the occurrence and development of myopia.

[0038] In some embodiments, referring to Figure 3, Curve A is formed by connecting the coordinate points (360, 0.05), (380, 0.15), (400, 0.25), (430, 0.45), (447, 0.5), (480, 0.55), (550, 0.84), (600, 0.98), (637, 1.05), (680, 0.86), (720, 0.44), (755, 0.2), (780, 0.1), (800, 0.05), (850, 0.01) in sequence;

[0039] , Curve B is formed by connecting the coordinate points (360, 0.005), (380, 0.01), (400, 0.01), (430, 0.02), (447, 0.08), (480, 0.12), (550, 0.45), (600, 0.67), (637, 0.8), (680, 0.52), (720, 0.15), (755, 0.03), (780, 0.02), (800, 0.01), (850, 0) in sequence.

[0040] The respective coordinate points of Curve A and Curve B are shown in the following table.

[0041]

[0042] In the embodiment of the present utility model, by specifically defining multiple coordinate values of Curve A and Curve B, that is, specifically defining the changing trends of the upper and lower limits of the spectral energy ratio formed by the light rays in each wavelength band, the spectral energy ratio range corresponding to different wavelengths is further narrowed. For example, when the wavelength is 600 nm, the spectral energy ratio range in the prior art is usually limited between 0.4 - 1.03, that is, the difference between the upper limit and the lower limit of the spectral energy ratio is 0.63, while in the embodiment of the present utility model, the spectral energy ratio range is limited between 0.67 - 0.98, that is, the difference between the upper limit and the lower limit of the spectral energy ratio is 0.31, and the spectral energy ratio range is narrowed by 0.32 compared with the prior art. Thus, the difficulty of secondary optical light distribution of the light source can be further reduced, making the secondary optical light distribution of the light source more convenient and enabling more reasonable guidance of the actual production of the light source.

[0043] Furthermore, as shown in the following table, in some embodiments, after the spectral energy of the lamp bead 100 is subjected to maximum normalization processing, the spectral energy ratio of the spectrum is distributed between Curve C and Curve D. Curve C is the changing curve of the upper limit of the spectral energy ratio after normalization processing with the increase of the wavelength, and Curve D is the changing curve of the lower limit of the spectral energy ratio after normalization processing with the increase of the wavelength. In Curve C and Curve D, the X-axis is the wavelength, and the Y-axis is the spectral energy ratio after normalization processing, where,

[0044] The curve C is formed by connecting the coordinate points (360, 0.02), (380, 0.1), (400, 0.2), (430, 0.4), (447, 0.45), (480, 0.5), (550, 0.8), (600, 0.95), (637, 1.05), (680, 0.8), (720, 0.4), (755, 0.15), (780, 0.08), (800, 0.03), (850, 0.01) in sequence;

[0045] The curve D is formed by connecting the coordinate points (360, 0.005), (380, 0.015), (400, 0.01), (430, 0.05), (447, 0.1), (480, 0.15), (550, 0.5), (600, 0.7), (637, 0.85), (680, 0.55), (720, 0.18), (755, 0.05), (780, 0.02), (800, 0.01), (850, 0) in sequence.

[0046]

[0047] In the embodiment of the present utility model, on the basis of curve A and curve B, the range of the spectral energy ratio corresponding to the light of each wavelength band is further reduced. For example, when the wavelength is 600 nm, the Y-axis difference between curve A and curve B is 0.98 - 0.67 = 0.31, that is, the difference between the upper limit and the lower limit of the spectral energy ratio is 0.31, while the Y-axis difference between curve C and curve D is 0.95 - 0.7 = 0.25, that is, the difference between the upper limit and the lower limit of the spectral energy ratio is 0.25. It can be seen that in the embodiment of the present utility model, the spectral energy ratio range when the wavelength is 600 nm is greatly narrowed compared with curve A and curve B, thereby further reducing the difficulty of secondary optical light distribution and making the production of the light source more convenient.

[0048] As shown in the following table, it is the spectral comparison table of embodiments B01 - B05 of the present utility model, where the X-axis is the wavelength (nm) and the Y-axis is the spectral energy ratio after normalization processing.

[0049]

[0050] Refer to Figure 2 , in some embodiments, in the lamp bead 100, a convex portion 131 that protrudes outward and is embedded inside the bracket 110 is provided on the outer peripheral wall of the heat dissipation copper column 130, thereby greatly increasing the contact area between the heat dissipation copper column 130 and the bracket 110. Not only can the heat dissipation effect of the heat dissipation copper column 130 on the lamp bead 100 be improved, but also the connection strength between the heat dissipation copper column 130 and the bracket 110 can be improved.

[0051] Referring to Figure 1 and Figure 2 , in some embodiments, an insulating pad 132 is provided at the bottom of the heat dissipation copper column 130. The insulating pad 132 is disposed on the bracket 110 and extends downward to the lower surface of the bracket 110, thereby avoiding the conductive heat dissipation copper column 130 being exposed outside the bracket 110 and affecting the electrical performance and safety performance of the lamp bead 100. In addition, by adopting the above structure, when manufacturing the lamp bead 100, a through hole penetrating in the up and down direction can be directly formed in the bracket 110, and then the heat dissipation copper column 130 is installed into the through hole, and the heat dissipation copper column 130 is limited inside the bracket 110 through the insulating pad 132, thereby facilitating the production and processing of the bracket 110.

[0052] Referring to Figure 1 and Figure 2 , in some embodiments, a pad 151 connected to the conductive layer 140 is provided in the relief groove 150, and the gold wire 160 is electrically connected to the pad 151. Among them, the setting of the pad 151 can facilitate the connection between the gold wire 160 and the conductive layer 140, and further facilitate the electrical connection between the chip 120 and the negative electrode pin 112. In addition, by arranging the pad 151 in the relief groove 150, this structure can avoid the light emitted by the chip 120 being blocked or interfered by the pad 151 protruding from the upper surface of the bracket 110.

[0053] In some embodiments, part of the fluorescent glue is filled in the relief groove 150, and the pad 151 and the gold wire 160 are both embedded in the fluorescent glue, whereby the pad 151 and the gold wire 160 can be further fixed by the fluorescent glue, which is beneficial to improving the stability of the structure inside the lens 170. In addition, in this structure, the fluorescent glue can completely wrap the chip 120, so that the light emitted by the chip 120 in all directions can pass through the fluorescent glue and irradiate out, thereby forming light with a continuous spectrum of 360nm - 850nm, and further being able to slow down the excessive growth in the development of the eye axis and reduce the incidence of myopia.

[0054] Referring to Figure 4 and Figure 5 , in some embodiments, the number of lamp beads 100 is multiple, and at least two of the lamp beads 100 emit light in different wavelength bands. All the lamp beads 100 can combine to emit light with a continuous spectrum of 360nm - 850nm. Thus, the lamp beads 100 emitting light of different wavelengths can be combined to emit light, thereby facilitating the obtaining of light with a continuous spectrum of 360nm - 850nm, and making the actual production of the light source more convenient and flexible.

[0055] Referring to Figure 4 and Figure 5, in some embodiments, the light source further includes at least two substrates 180, at least two lamp beads 100 are electrically mounted on each substrate 180, all the substrates 180 are electrically connected in series in sequence, the light wavebands emitted by the combination of all the lamp beads 100 on at least one substrate 180 are 360nm - 637nm, and the light wavebands emitted by the combination of all the lamp beads 100 on at least one substrate 180 are 637nm - 850nm. Thus, the lamp beads 100 emitting light of different wavebands can be better combined to emit light, and by arranging at least two lamp beads 100 on each substrate 180 and differentiating the light wavebands emitted by the combination of lamp beads 100 on different substrates 180, the structure of the light source can be simplified and the production of the light source can be facilitated.

[0056] In some embodiments, the chip 120 may specifically adopt an LED chip or a laser chip, and the present utility model does not make specific limitations thereto.

[0057] An embodiment of the present utility model further provides a lighting fixture, which is provided with the light source suitable for secondary light distribution that can inhibit excessive growth of the eye axis in any of the above embodiments. The lamp beads 100 adopted by the light source have good heat dissipation performance, antistatic performance, and compressive performance, which is beneficial to improving the electrical performance of the lighting fixture and extending the service life of the lighting fixture. In addition, the light source can emit light with a continuous spectrum having a wavelength of 360nm - 850nm, thereby achieving the effect of slowing down the excessive growth during eye axis development and reducing the incidence of myopia, and by narrowing the range of the spectral energy ratio corresponding to each wavelength band in the emission spectrum, the difficulty of secondary optical light distribution can be greatly reduced, making the actual production of the light source more convenient.

[0058] It can be understood that the lighting fixture of the embodiment of the present utility model may specifically be a table lamp, a panel lamp, a strip lamp, a spotlight, a bulb lamp, a ceiling lamp, a wall lamp, a chandelier, a mobile lighting fixture, a track lighting fixture, an embedded lighting fixture, a display screen, etc., and the present utility model does not make specific limitations thereto.

[0059] The above has described the embodiments of the present utility model in detail with reference to the drawings, but the present utility model is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present utility model within the knowledge scope of those of ordinary skill in the art.

Claims

1. A light source suitable for secondary light distribution that can inhibit excessive growth of the eye axis, characterized in that, Comprising at least one lamp bead (100), the lamp bead (100) comprising: A bracket (110) provided with a positive electrode pin (111) and a negative electrode pin (112) extending outward; A heat dissipation copper column (130) embedded in the bracket (110) and extending upward to the upper surface of the bracket (110), the heat dissipation copper column (130) being electrically connected to the positive electrode pin (111); A chip (120) mounted on the upper surface of the heat dissipation copper column (130) and electrically connected to the heat dissipation copper column (130); A conductive layer (140) embedded in the bracket (110) and isolated from the heat dissipation copper column (130), a relief groove (150) extending downward to the conductive layer (140) being formed on the upper surface of the bracket (110), the chip (120) being electrically connected to a gold wire (160), the other end of the gold wire (160) extending to the relief groove (150) and being electrically connected to the conductive layer (140), the conductive layer (140) being electrically connected to the negative electrode pin (112); A lens (170) provided on the bracket (110) and covering the outer periphery of the chip (120), a fluorescent glue being filled between the lens (170) and the bracket (110), the fluorescent glue covering the outer periphery of the chip (120); Wherein, the lamp bead (100) is capable of emitting light with a continuous spectrum having a wavelength of 360 nm - 850 nm. After the spectral energy of the spectrum is subjected to maximum normalization processing, the spectral energy ratio distribution of the spectrum is between curve A and curve B. In curve A and curve B, the X-axis is the wavelength and the Y-axis is the normalized spectral energy ratio. Among them, When the wavelength is 360 nm - 637 nm, as the wavelength increases, the spectral energy ratio of curve A gradually increases from 0.05 to 1.05, and the spectral energy ratio of curve B gradually increases from 0.005 to 0.8; When the wavelength is 637 nm - 850 nm, as the wavelength increases, the spectral energy ratio of curve A gradually decreases from 1.05 to 0.01, and the spectral energy ratio of curve B gradually decreases from 0.8 to 0.

2. The light source suitable for secondary light distribution capable of suppressing excessive growth of the eye axis according to claim 1, wherein Curve A is formed by connecting the coordinate points (360, 0.05), (380, 0.15), (400, 0.25), (430, 0.45), (447, 0.5), (480, 0.55), (550, 0.84), (600, 0.98), (637, 1.05), (680, 0.86), (720, 0.44), (755, 0.2), (780, 0.1), (800, 0.05), (850, 0.01) in sequence; The curve B is formed by connecting the coordinate points (360, 0.005), (380, 0.01), (400, 0.01), (430, 0.02), (447, 0.08), (480, 0.12), (550, 0.45), (600, 0.67), (637, 0.8), (680, 0.52), (720, 0.15), (755, 0.03), (780, 0.02), (800, 0.01), (850, 0) in sequence.

3. The light source suitable for secondary light distribution that can inhibit excessive growth of the eye axis according to claim 1, wherein In the lamp bead (100), a convex portion (131) which protrudes outward and is embedded in the interior of the bracket (110) is provided on the outer peripheral wall of the heat dissipation copper column (130).

4. The light source suitable for secondary light distribution capable of inhibiting excessive growth of the eye axis according to claim 3, wherein, An insulating pad (132) is provided at the bottom of the heat dissipation copper column (130), and the insulating pad (132) is arranged on the bracket (110) and extends downward to the lower surface of the bracket (110).

5. The light source suitable for secondary light distribution capable of suppressing excessive growth of the eye axis according to claim 1, characterized in that, A pad (151) connected to the conductive layer (140) is provided in the relief groove (150), and the gold wire (160) is electrically connected to the pad (151).

6. The light source suitable for secondary light distribution capable of suppressing excessive growth of the eye axis according to claim 5, characterized in that, Part of the fluorescent glue is filled in the relief groove (150), and the pad (151) and the gold wire (160) are both embedded in the fluorescent glue.

7. The light source suitable for secondary light distribution capable of suppressing excessive growth of the eye axis according to claim 1, characterized in that, The number of the lamp beads (100) is multiple, and the light emission bands of at least two of the lamp beads (100) are different. All the lamp beads (100) can emit light of the continuous spectrum with a wavelength of 360 nm - 850 nm in combination.

8. The light source suitable for secondary light distribution that can inhibit excessive growth of the eye axis according to claim 7, characterized in that, It further includes at least two substrates (180). At least two of the lamp beads (100) are electrically mounted on each substrate (180). All the substrates (180) are electrically connected in series in sequence. The light emission band of all the lamp beads (100) combined on at least one substrate (180) is 360 nm - 637 nm, and the light emission band of all the lamp beads (100) combined on at least one substrate (180) is 637 nm - 850 nm.

9. The light source suitable for secondary light distribution capable of suppressing excessive growth of the eye axis according to claim 1, characterized in that, The chip (120) is an LED chip or a laser chip.

10. A lighting fixture, characterized in that, A light source suitable for secondary light distribution and capable of suppressing excessive growth of the eye axis according to any one of claims 1 to 9 is provided.

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