White-light lamp bead with high luminous efficiency and high color rendering and photographic lamp adopting white-light lamp bead
By setting up an auxiliary light-emitting component next to the blue light chip to supplement the red spectrum lacking in white light, the problem of insufficient color rendering of white light beads in existing photography lights is solved, and high light efficiency and high color rendering effects are achieved.
Patent Information
- Application Number
- CN202420572525.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-03-22
AI Technical Summary
The white light beads of existing photography lights have high luminous efficiency but insufficient color rendering, especially the lack of red spectrum, resulting in low color rendering.
An auxiliary light-emitting component is set next to the blue light chip. The auxiliary light-emitting component can be a red light chip, an amber chip or a lemon chip, or an integrated red, green and blue chip. The red light or other auxiliary light emitted by these chips supplements the red spectrum part of the white light, and is combined with a ceramic shell for heat dissipation.
The color rendering of white light lamp beads is improved while maintaining high luminous efficiency, achieving high luminous efficiency and high color rendering effects.
Smart Images
Figure CN223349023U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photographic lamps, in particular to a lamp bead with high light efficiency and high color rendering, and a photographic lamp using the white light lamp bead. Background Art
[0002] Luminous efficiency refers to luminous efficiency, which affects the brightness of light. Generally, cool light is more efficient than warm light. Natural white light is cool and has better luminous efficiency. Color rendering refers to the ability of a light source to reproduce the true colors of objects. Color rendering depends on the spectral integrity of the light. Currently, white light beads in photography lights on the market use blue light chips coated with phosphor to produce white light. When the blue light chip emits outward, some of the light hits the phosphor, activating it and emitting white light. While these white light beads, which use blue light to excite phosphors, have high luminous efficiency, the resulting white light lacks the red spectrum, resulting in lower color rendering. Utility Model Content
[0003] The purpose of the present utility model is to provide a white light lamp bead with high luminous efficiency and high color rendering, and a photography light using the same, so that the white light emitted by the lamp bead has high luminous efficiency and high color rendering. The photography light using the white light lamp bead also has high luminous efficiency and high color rendering.
[0004] To achieve the above-mentioned purpose, the utility model provides a white light lamp bead with high luminous efficiency and high color rendering, including a substrate, a blue light chip is provided on the upper surface of the substrate, the blue light chip is a main chip, the surface of the blue light chip is coated with phosphor, and an auxiliary light-emitting component is provided on the substrate next to the blue light chip, the auxiliary light-emitting component emits auxiliary red light outward and mixes with the white light.
[0005] Preferably, the auxiliary light-emitting element includes one or more of a red chip, an amber chip and a lemon chip.
[0006] Preferably, the auxiliary light-emitting element also includes a blue light chip, the surface of which is coated with red phosphor.
[0007] Preferably, the auxiliary light-emitting element further includes an LED chip integrating red, green and blue color chips.
[0008] Preferably, a ceramic housing covering the blue light chip and the auxiliary light-emitting element is fixed on the substrate.
[0009] Preferably, the substrate is a heat-resistant substrate, specifically a thermoelectric separation copper substrate or a ceramic substrate.
[0010] Preferably, the heat-resistant substrate is provided with a circuit layer for providing voltage to the light-emitting chip. The white light lamp bead is provided with a first high-purity gold wire to electrically connect the blue light chip with the circuit layer. The white light lamp bead is also provided with a second high-purity gold wire to electrically connect the auxiliary light-emitting component with the circuit layer.
[0011] Preferably, there are two auxiliary light-emitting components, which are connected in series or in parallel.
[0012] The utility model also provides a photography light using the white light lamp bead, comprising a plurality of the above-mentioned white light lamp beads.
[0013] Preferably, the plurality of white light lamp beads share the same substrate.
[0014] The beneficial effects of the utility model are:
[0015] White light lamp beads that use blue light chips to excite phosphors have high luminous efficiency, that is, they have high luminous efficiency. The red light emitted by the auxiliary light-emitting components complements the red spectrum part that is lacking in the white light produced by this type of lamp bead, thereby improving the color rendering of the white light, so that the white light lamp beads have both high luminous efficiency and high color rendering. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of a photographic light;
[0017] Figure 2 This is a schematic diagram of the first embodiment of the lamp bead;
[0018] Figure 3 It is a schematic diagram of the second embodiment of the lamp bead.
[0019] 1 is the thermoelectric separation copper substrate, 2 is the blue light chip, 3 is the phosphor, 4 is the red light chip, 5 is the first high-purity gold wire, 6 is the second high-purity gold wire, 7 is the circuit layer, 8 is the heat dissipation layer, and 9 is the white light lamp bead. DETAILED DESCRIPTION
[0020] The present invention is further described in detail below in conjunction with specific embodiments.
[0021] Photography lights such as Figure 1 As shown, it includes multiple white light lamp beads 9, and the multiple white light lamp beads 9 are combined and arranged in a hexagonal shape; the multiple white light lamp beads 9 are arranged on the same heat-resistant substrate. In this embodiment, the heat-resistant substrate is specifically a thermoelectric separation copper substrate.
[0022] White light beads 9 Figure 2As shown, the top surface of the thermoelectric separation copper substrate 1 is coated with a circuit layer 7 for providing voltage to the light-emitting chip. Circuit layer 7 is the wiring layer. The remaining portion of the top surface of the thermoelectric separation copper substrate 1 is a heat dissipation layer 8, on which a blue light chip 2 and a red light chip 4 are mounted. The blue light chip 2 is the primary chip, a high-power chip coated with phosphor 3. The red light chip 4 is an auxiliary light-emitting element, located next to the blue light chip 2. When the white light lamp bead 9 is powered on, the blue light chip 2 excites the phosphor 3 to produce white light, while the red light chip 4 is electrically excited to produce red light. The red light has a wavelength of 615-660nm, which compensates for the red spectrum portion lacking in white light and improves the color rendering of the white light. A ceramic housing (not shown) is fixed to the thermoelectric separation copper substrate 1 to cover the blue light chip 2 and the red light chip 4. The ceramic housing has excellent thermal conductivity and can dissipate the heat generated by the high-power blue light chip 2.
[0023] The white light lamp bead 9 is provided with a first high-purity gold wire 5 and a second high-purity gold wire 6. The first high-purity gold wire 5 electrically connects the blue light chip 2 with the circuit layer 7, and the second high-purity gold wire 6 electrically connects the red light chip 4 with the circuit layer 7, so that the blue light chip 2 and the red light chip 4 can obtain voltage from the circuit layer 7.
[0024] To further improve the color rendering of white light, it can be changed to Figure 3 As shown, two red light chips 4 are fixed on the heat dissipation layer 8 at the center of the thermoelectric separation copper substrate 1 , and the two red light chips 4 are connected in series or in parallel.
[0025] This embodiment uses the red light chip 4 as an auxiliary light-emitting element. It is possible to use another blue light chip coated with red phosphor to replace the red light chip 4 to emit red light. Alternatively, it is possible to use other color chips with wavelengths close to the red light wavelength, such as an amber chip or a lemon chip. The wavelength corresponding to amber is 580-610nm, and the wavelength corresponding to lemon is 565-585nm. Alternatively, it is possible to use multiple red light chips, amber chips, and lemon chips. It is also possible to use an LED chip that integrates red, green, and blue color chips to improve the color rendering of white light.
[0026] The heat-resistant substrate used this time is a thermoelectric separation copper substrate, which can be replaced with a ceramic substrate.
[0027] The above is only an embodiment of the present invention and does not limit the scope of patent protection. Those skilled in the art can make non-substantial changes or substitutions based on the present invention and still fall within the scope of patent protection.
Claims
1. A high-light-efficiency and high-color-rendering white light lamp bead, comprising a substrate, a blue light chip disposed on the upper surface of the substrate, the blue light chip being the main chip, the surface of the blue light chip being coated with phosphor, the blue light chip stimulating the phosphor to produce white light, characterized in that: An auxiliary light emitting component is provided on the substrate beside the blue light chip. The auxiliary light emitting component emits auxiliary red light outwards and mixes with the white light. A ceramic shell covering the blue light chip and the auxiliary light emitting component is fixed on the substrate.
2. The white light lamp bead according to claim 1, characterized in that: The auxiliary light emitting element includes one or more of a red chip, an amber chip and a lemon chip.
3. The white light lamp bead according to claim 1, characterized in that: The auxiliary light-emitting element also includes a blue light chip, the surface of which is coated with red phosphor.
4. The white light lamp bead according to claim 1, characterized in that: The auxiliary light-emitting element also includes an LED chip integrating red, green and blue color chips.
5. The white light lamp bead according to claim 1, characterized in that: The substrate is a heat-resistant substrate, specifically a thermoelectric separation copper substrate or a ceramic substrate.
6. The white light lamp bead according to claim 1, characterized in that: The substrate is a heat-resistant substrate, which is provided with a circuit layer for providing voltage to the light-emitting chip. The white light lamp bead is provided with a first high-purity gold wire to electrically connect the blue light chip with the circuit layer. The white light lamp bead is also provided with a second high-purity gold wire to electrically connect the auxiliary light-emitting component with the circuit layer.
7. The white light lamp bead according to claim 6, characterized in that: There are two auxiliary light-emitting components, which are connected in series or in parallel.
8. Photography light, characterized by: The invention comprises a plurality of white light lamp beads according to any one of claims 1 to 7.
9. The photographic light according to claim 8, wherein: The multiple white light lamp beads share the same substrate.