Light source module and lighting device

Abstract

The invention provides a light source module and a lighting device. The light source module comprises: a first light emitting member for emitting a first white light beam; the spectrum of the first white light beam comprises a light-emitting peak value in a purple wavelength region; the second light emitting part is used for emitting a second white light beam; the spectrum of the second white light beam comprises a light-emitting peak value in a red wavelength region; the processing unit is coupled to the first light-emitting part and the second light-emitting part; the switching unit is coupled to the processing unit, and the switching unit is used for selectively switching to a first mode or a second mode; wherein when the switching unit is switched to the first mode, the processing unit controls at least the first light-emitting part to be lightened; and when the switching unit is switched to the second mode, the processing unit controls the first light-emitting part to be extinguished and the second light-emitting part to be lightened.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of light sources, in particular to a light source module and a lighting device. BACKGROUND

[0002] In the state of natural light, the visual comfort of people is best. The most common white light source in the market is a blue chip coated with yellow phosphor particles that can be excited by blue light. The blue light emitted by the chip and the yellow light emitted by the phosphor particles form white light. However, the above white light spectrum has lower continuity and integrity compared to the solar spectrum, and it is difficult to meet the healthy lighting needs.

[0003] The common eye protection lamps in the prior art generally use a violet chip package to make the light source of the lamp, so as to make up for the lack of short-wave violet light in the light spectrum of the traditional conventional lamp, so that the spectral continuity is close to the solar spectrum, so as to simulate natural daylight.

[0004] However, there is no daylight in the dark environment at night. During the use at night, the short-wave violet light emitted by the light source of the eye protection lamp will affect the user's circadian rhythm, delay sleep, and thus cause sleep quality problems, which is difficult to meet the user's healthy lighting needs.

[0005] Therefore, it is necessary to design a new type of light source module and lighting device to overcome the above defects. SUMMARY

[0006] The purpose of the present application is to provide a light source module and a lighting device. The light source module can be switched to a first mode or a second mode. The first mode is to emit a first white light beam with short-wave violet light, to simulate natural daylight in daytime use scenarios and provide comfortable eye protection. The second mode is to emit a second white light beam with enhanced red light components, to inhibit myopia in nighttime use scenarios, reduce the impact of short-wave violet light on the user's circadian rhythm, and promote the healthy use of the eyes.

[0007] To achieve the above purpose, the present application provides a light source module and a lighting device. The light source module includes a first light emitting element for emitting a first white light beam; the spectrum of the first white light beam includes a light emitting peak value in the violet wavelength region;

[0008] A second light emitting element is used to emit a second white light beam; the spectrum of the second white light beam includes a light emitting peak value in the red wavelength region;

[0009] A processing unit is coupled to the first light emitting element and the second light emitting element;

[0010] A switching unit is coupled to the processing unit. The switching unit is used to selectively switch to a first mode or a second mode;

[0011] When the switching unit switches to the first mode, the processing unit controls at least the first light emitting element to be turned on; when the switching unit switches to the second mode, the processing unit controls the first light emitting element to be turned off and the second light emitting element to be turned on.

[0012] Preferably, the light source module further comprises a substrate, and the first light emitting elements and the second light emitting elements are arranged on the substrate alternately and spacedly, or the first light emitting elements and the second light emitting elements are arranged on the substrate linearly and respectively.

[0013] Preferably, the substrate has a plurality of, and the substrates are arranged in a rectangular array.

[0014] Preferably, the color temperature of the first white light beam is different from the color temperature of the second white light beam; and the color temperature of the second white light beam is less than 4000K.

[0015] Preferably, the light source module further comprises:

[0016] a clock unit for detecting whether the current time is a daytime period or a nighttime period;

[0017] The switching unit is further coupled to the clock unit; when the current time is the daytime period, the switching unit switches to the first mode; and when the current time is the nighttime period, the switching unit switches to the second mode.

[0018] Preferably, the light source module further comprises:

[0019] a light sensing device facing the non-illumination area for sensing ambient light;

[0020] The processing unit is coupled to the light sensing device, and the processing unit further adjusts the illumination parameter of the first light emitting element and / or the second light emitting element based on the sensing value of the light sensing device.

[0021] Preferably, the illumination parameter comprises light intensity and color temperature.

[0022] Preferably, the first light emitting element comprises a violet light chip and a first wavelength conversion element; the violet light chip emits violet light to excite the first wavelength conversion element to generate the first white light beam;

[0023] The light emitting peak value of the violet light chip is 415nm, and the first wavelength conversion element comprises blue fluorescent particles, green fluorescent particles and red fluorescent particles.

[0024] Preferably, the second light emitting element comprises a blue light chip and a second wavelength conversion element; the blue light chip emits blue light to excite the second wavelength conversion element to generate the second white light beam;

[0025] The second wavelength conversion element comprises red fluorescent particles with a light emission peak in the wavelength range of 610-680 nm to enhance the red light component in the second white light beam.

[0026] Preferably, the lighting device comprises the light source module.

[0027] Compared with the prior art, the light source module provided by the application has a first light emitting part and a second light emitting part, and based on the switching unit in the light source module, a user can freely switch to a first mode or a second mode. In the first mode, at least the first light emitting part is turned on, and in the first mode, the light source module can emit a first white light beam with a purple light component, simulate natural sunlight, effectively boost the spirit, inhibit the growth of the eye axis, inhibit myopia, improve visual comfort, and be beneficial to use in a daytime scene. In the second mode, only the second light emitting part is turned on, and the light source module emits a second white light beam with a red light component to effectively inhibit myopia, and by turning off the first light emitting part, the secretion of melatonin of the user can be inhibited by reducing the purple light component, the circadian rhythm of the user can be avoided from being affected, and the demand of the user for healthy lighting can be met. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The structural block diagram of the light source module of an embodiment of the application;

[0029] Figure 2 The configuration schematic diagram of the first light emitting part and the second light emitting part of an embodiment of the application;

[0030] Figure 3 The configuration schematic diagram of the first light emitting part and the second light emitting part of an embodiment of the application;

[0031] Figure 4 The structural block diagram of the light source module of an embodiment of the application. DETAILED DESCRIPTION

[0032] In order to have a further understanding of the object, structure, features, and functions of the application, the embodiments are described in detail as follows.

[0033] In the description and claims of the application, certain terms have been used for brevity, no unnecessary limitations are to be implied therefrom thereof, unless otherwise indicated by use of such terms in the patent laws. The terms "comprise", "comprising", "include", "including", "contain", "containing", "have" and "having" are inclusive or open-ended and do not exclude additional, unrecited elements or method steps.

[0034] REFERENCE Figure 1As shown, a structure diagram of the light source module 1 of the present application is disclosed. The light source module 1 of the present application can be used in various lighting devices, such as a table lamp, a floor lamp, a piano lamp, etc.

[0035] The light source module 1 comprises a first light emitting member 10, a second light emitting member 11, a processing unit 13 and a switching unit 12. The first light emitting member 10 is used to emit a first white light beam, and the second light emitting member 11 is used to emit a second white light beam. The first white light beam has a violet component, and the spectrum of the first white light beam contains a light emitting peak in the violet wavelength region. The second white light beam has a red component, and the spectrum of the second white light beam contains a light emitting peak in the red wavelength region. The processing unit 13 is coupled to the first light emitting member 10 and the second light emitting member 11, and the switching unit 12 is coupled to the processing unit 13. The switching unit 12 is used to selectively switch to a first mode or a second mode.

[0036] In a daytime use scenario, when the user operates the switching unit 12 to switch to the first mode, the processing unit 13 controls the first light emitting member 10 to be lit, or the processing unit 13 controls the first light emitting member 10 and the second light emitting member 11 to be lit. In the first mode, it is preferred that only the first light emitting member 10 is lit, and the light source module 1 emits the first white light beam with the violet component, which is close to the true sunlight spectrum. By supplementing the violet component, the spirit can be effectively boosted and the eye axis growth can be inhibited, so as to achieve the effects of slowing down myopia and improving visual comfort. In addition, in the first mode, the first light emitting member 10 and the second light emitting member 11 can also be controlled to be lit according to the needs, so that the light source module 1 emits the first white light beam with the violet component and the red component, thereby supplementing the violet component and the red component which are lacked by the conventional light source module 1, enhancing the spectral continuity and integrity, being close to the full spectrum of sunlight, and meeting the needs of the user for healthy lighting.

[0037] In a nighttime use scenario, when the user operates the switching unit 12 to switch to the second mode, the processing unit 13 controls the second light emitting member 11 to be lit, and the first light emitting member 10 is extinguished. The light source module 1 emits the first white light beam with the red component, which can effectively activate the eye energy cells of the user, reduce eye fatigue, and slow down myopia. By extinguishing the first light emitting member 10, the influence of the short-wave violet component on the secretion of the melatonin of the user can be inhibited, the influence on the circadian rhythm of the user can be reduced, the sleep of the user can be avoided to be delayed, and the needs of the user for healthy lighting can be met.

[0038] As can be seen, based on the switching unit 12 in this light source module 1, it can switch to the first mode (daytime use scenario) or the second mode (nighttime use scenario). In the daytime use scenario, it can supplement the purple light component to simulate natural sunlight, suppress myopia and improve visual comfort. In the nighttime use scenario, it can supplement the red light component to suppress myopia while reducing the impact of purple light on the user's circadian rhythm, thus helping to promote healthy eye use.

[0039] In one embodiment, the first light-emitting element 10 is preferably a full-spectrum white LED bead packaged from a violet light chip, comprising a violet light chip and a first wavelength conversion element, wherein the first wavelength conversion element comprises blue fluorescent particles, green fluorescent particles, and red fluorescent particles mixed in a certain proportion. It is understood that the violet light chip emits violet light to excite the first wavelength conversion element to generate the first white light beam, thereby supplementing the violet light required to delay myopia. Preferably, the violet light chip has a peak emission value of 415 nm, but the present invention is not limited thereto.

[0040] Further, the second light-emitting element 11 is preferably a full-spectrum white LED bead packaged from a blue light chip, comprising a blue light chip and a second wavelength conversion element. The second wavelength conversion element includes red fluorescent particles (preferably red fluorescent particles with high photoluminescence quantum efficiency and thermal stability) to enhance the red light component in the second white light beam. The blue light chip emits blue light to excite the second wavelength conversion element, generating the second white light beam to supplement the beneficial red light needed to delay myopia. Preferably, the second wavelength conversion element is a mixed fluorescent particle containing red fluorescent particles with emission peaks in the wavelength range of 610-680 nm. However, this invention is not limited to this; a second light-emitting element 12 using red fluorescent particles with such peaks can exhibit excellent color reproduction in the red regions such as orange, red, and deep red, thereby enhancing the red light component in the second white light beam.

[0041] like Figure 2 As shown, in one embodiment, the light source module 1 further includes a substrate 16, and multiple first light-emitting elements 10 and second light-emitting elements 11 are provided. Multiple first light-emitting elements 10 and second light-emitting elements 11 are alternately spaced on the substrate 16 to ensure uniform illumination by the first white light beam and the second white light beam. When both the first and second white light beams are lit, the light mixing effect is uniform and excellent. Furthermore, the structure is simple, highly reliable, and provides ample space for heat dissipation, effectively improving the device's lifespan.

[0042] like Figure 3As shown, in one of the embodiments, the plurality of substrates 16 are arranged in a rectangular array, and the plurality of first light emitting elements 10 and the plurality of second light emitting elements 11 are arranged in parallel and linearly distributed, respectively, so that the light emitting brightness and the light emitting area of the light source module 1 can be increased, the uniformity of the light can be improved, and a certain uniform light flux and illuminance in the illumination area can be achieved.

[0043] Further, the color temperature of the first white light beam is different from the color temperature of the second white light beam, and when the first light emitting element 10 and the second light emitting element 11 are both turned on, the first white light beam and the second white light beam are fully mixed, and the overall color temperature can be adjusted by adjusting the driving current ratio of the two light emitting elements. In addition, the color temperature of the second white light beam is less than 4000K, so that in the second mode (night use scenario), the color temperature of the second white light beam emitted by the light source module 1 can be effectively avoided to be too high to cause damage to the user's retina.

[0044] Please refer to Figure 4 As shown, in one of the preferred embodiments, the light source module 1 further comprises a clock unit 14 for detecting whether the current time is a daytime period or a night period. The switching unit 12 is coupled to the clock unit 14, and when the current time is a daytime period, the switching unit 12 can automatically switch to the first mode, and the processing unit 13 controls at least the first light emitting element 10 to be turned on to simulate natural daylight in the daytime use scenario, supplement the missing violet component in the conventional light source in the prior art, and inhibit myopia.

[0045] When the clock unit 14 detects that the current time is a night period, the switching unit 12 can automatically switch to the second mode, and the processing unit 13 controls the second light emitting element 11 to be turned on and the first light emitting element 10 to be turned off, so as to supplement the red component and inhibit myopia. By turning off the first light emitting element 10, the influence of the violet component on the user's circadian rhythm can be reduced, the automation degree is higher, and the user's use is more convenient.

[0046] Further, in one of the preferred embodiments, the daytime period includes a time period before sunset and a time period after sunset. In the daytime use scenario (first mode), when the current time is a time period before sunset, the processing unit 13 controls only the first light emitting element 10 to be turned on to simulate natural daylight; and when the current time is a time period after sunset, the processing unit 13 controls the first light emitting element 10 and the second light emitting element 11 to be turned on and adjusts the light emitting proportion of the first light emitting element 10 and the second light emitting element 11 to help the healthy use of the eyes.

[0047] Please refer to Figure 4As shown, in one of the embodiments, the light source module 1 further comprises a light sensing device 15 arranged to face the non-illumination area to sense ambient light. The processing unit 13 is further configured to adjust the illumination parameters of the first light emitting element 10 and / or the second light emitting element 11 according to the sensing value of the light sensing device 15 to achieve the eye protection effect. The illumination parameters include the light emitting intensity and the color temperature.

[0048] In summary, the present application provides a light source module 1 and a lighting device comprising the same. When the light source module 1 is used in the daytime, the operation switching unit 12 is switched to the first mode, and the processing unit 13 controls at least the first light emitting element 10 to emit a first white light beam having at least short-wave violet light to simulate natural sunlight, enhance the spectral continuity and integrity, boost the spirit, and inhibit the eye axis growth, thereby effectively inhibiting myopia and achieving the eye protection effect. When the light source module 1 is used in the night, the operation switching unit 12 is switched to the second mode, and the processing unit 13 controls only the second light emitting element 11 to emit light to supplement the red light component to inhibit myopia and reduce the influence of the violet light component on the circadian rhythm to avoid delaying the user's sleep and meet the user's health lighting needs.

[0049] The present application has been described by the above-mentioned embodiments, however, the above-mentioned embodiments are only examples for implementing the present application. It must be pointed out that the disclosed embodiments do not limit the scope of the present application. On the contrary, modifications and improvements made without departing from the spirit and scope of the present application are within the scope of the patent protection of the present application.

Claims

1. A light source module, characterized in that, include: A first light-emitting element is used to emit a first white light beam; the spectrum of the first white light beam includes emission peaks in the violet wavelength region; The second light-emitting element is used to emit a second white light beam; the spectrum of the second white light beam contains emission peaks in the red wavelength region; The processing unit is coupled to the first light-emitting element and the second light-emitting element; A switching unit, coupled to the processing unit, is used to selectively switch to a first mode or a second mode; When the switching unit switches to the first mode, the processing unit controls at least the first light-emitting element to light up; when the switching unit switches to the second mode, the processing unit controls the first light-emitting element to turn off and the second light-emitting element to light up.

2. The light source module as described in claim 1, characterized in that, It also includes a substrate, on which a plurality of the first light-emitting elements and the second light-emitting elements are arranged alternately and at intervals, or on which a plurality of the first light-emitting elements and the second light-emitting elements are arranged in parallel and linearly distributed on the substrate.

3. The light source module as described in claim 2, characterized in that, The substrate has multiple substrates, which are arranged in a rectangular array.

4. The light source module as described in claim 1, characterized in that, The color temperature of the first white light beam is different from that of the second white light beam; the color temperature of the second white light beam is less than 4000K.

5. The light source module as described in claim 1, characterized in that, Also includes: The clock unit is used to detect whether the current time is during daytime or nighttime. The switching unit is also coupled to the clock unit; When the current time is during the daytime period, the switching unit switches to the first mode; when the current time is during the nighttime period, the switching unit switches to the second mode.

6. The light source module as described in claim 1, characterized in that, Also includes: A light-sensing device, which faces a non-illuminated area, is used to sense ambient light; The processing unit is coupled to the photosensitive device, and the processing unit also adjusts the illumination parameters of the first light-emitting element and / or the second light-emitting element based on the sensing value of the photosensitive device.

7. The light source module as described in claim 6, characterized in that, The lighting parameters include luminous intensity and color temperature.

8. The light source module as described in claim 1, characterized in that, The first light-emitting element includes a violet light chip and a first wavelength conversion element; the violet light chip emits violet light to excite the first wavelength conversion element to generate the first white light beam. The violet chip has a peak emission value of 415nm, and the first wavelength conversion element includes blue fluorescent particles, green fluorescent particles, and red fluorescent particles.

9. The light source module as described in claim 1, characterized in that, The second light-emitting element includes a blue light chip and a second wavelength conversion element. The blue light chip emits blue light to excite the second wavelength conversion element to generate the second white light beam. The second wavelength conversion element includes red fluorescent particles with emission peaks in the wavelength range of 610-680 nm to enhance the red light component in the second white light beam.

10. A lighting device, characterized in that, Includes the light source module as described in any one of claims 1-9.

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