Lamp head and lamp

Abstract

A lamp head (1) and a lamp. The lamp head (1) comprises a housing (101) and light sources. A first light outlet (601) and a second light outlet (602) having opposite light emission directions are respectively provided on two opposite sides of the housing (101). The light sources comprise a first light-emitting unit (501) and a second light-emitting unit (502) which are provided on the same light source plate (5) and are provided on the same side surface of the light source plate (5). The first light-emitting unit (501) is provided in a first region, the second light-emitting unit (502) is provided in a second region, and the first light-emitting unit (501) emits light toward the first light outlet (601). A reflector (105) covers the second region in the light emission direction of the second light-emitting unit (502). Light emitted by the second light-emitting unit (502) is reflected by the reflector (105) and then emitted from the second light outlet (602). Upper and lower light sources of the lamp head (1) share one light source plate (5), thereby reducing the number of parts to be assembled and achieving upper and lower three-dimensional spatial illumination. A main illumination part uses the reflector (105) for light distribution, taking into account both anti-glare performance and illuminance uniformity, improving the illumination effect of the whole lamp, being able to illuminate an entire working surface without shadows, and having soft direct-view light and no graininess, thereby meeting anti-glare requirements.

Description

Lamp holders and lamps

[0001] This application claims priority to Chinese patent applications filed on November 28, 2024, with application number 202411733083.5 and entitled "Lamp Holder and Lamp Fixture", and applications filed on November 28, 2024, with application number 202422928125.2 and entitled "Lamp Holder and Lamp Fixture", the contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of lighting, and in particular to a lamp holder for a reading and writing lamp and a lamp including the lamp holder. Background Technology

[0003] Among lighting products, there is a category specifically designed for reading, writing, and work. These lamps emit light facing the work surface, and the light emission methods are primarily side-emitting and direct-emitting. Side-emitting lamps emit light by refracting it through a light guide plate, achieving the effect of seeing the light but not the lamp itself. This type of light is softer and more comfortable than direct-emitting light. However, side-emitting lamps have drawbacks, such as heavier light guide plates, more difficult installation, and higher costs. In addition, side-emitting lamps may have inconsistent brightness on the sides, or even have bright edges that are clearly visible.

[0004] Meanwhile, current reading and writing lights typically only illuminate the work surface without upward beams, resulting in a small illumination range and an insufficiently bright and uncomfortable lighting environment. Lighting fixtures that incorporate upward light sources, on the other hand, suffer from complex structures, heavier lamp heads, and more components. Summary of the Invention

[0005] The purpose of this application is to solve at least one of the above problems and provide a lamp head and lamp fixture with a simple structure that can emit light from both the top and bottom and is glare-free.

[0006] To achieve the above-mentioned functions, the technical solution adopted in this application is to provide a lamp holder, including a housing and a light source. The housing has a first light-emitting port and a second light-emitting port with opposite light-emitting directions on opposite sides. The light source includes a first light-emitting unit and a second light-emitting unit disposed on the same light source plate and on the same side surface of the light source plate. The first light-emitting unit is disposed in a first region, and the second light-emitting unit is disposed in a second region. The first light-emitting unit emits light towards the first light-emitting port. An isolation part is disposed between the first region and the second region. A reflector covers the second region in the light-emitting direction of the second light-emitting unit. One end of the reflector is connected to the isolation part, and the other end is connected to the second light-emitting port. The light emitted by the second light-emitting unit is reflected by the reflector and emitted from the second light-emitting port.

[0007] Furthermore, the lamp head is rectangular, and the second region is disposed on both sides of the first region; or the lamp head is circular, and the second region is disposed around the first region.

[0008] Furthermore, the isolation portion is made of an opaque material and covers the entire boundary between the first region and the second region.

[0009] Furthermore, one end of the isolation portion is disposed adjacent to the light source plate, and the other end of the isolation portion extends away from the light source plate, with the end forming the first light outlet.

[0010] Furthermore, the reflective surface of the reflector is an arc-shaped surface, and the distance between its highest point and the light source plate is greater than the distance between the first light outlet and the light source plate.

[0011] Furthermore, the reflector is a portion of the inner surface of the housing.

[0012] Furthermore, the first light-emitting port is provided with a diffusion mask, and / or the second light-emitting port is provided with a microstructure plate.

[0013] Furthermore, the first light-emitting unit and the second light-emitting unit are connected to different control circuits, and each is controlled independently.

[0014] This application also provides a lamp, including a base, a lamp post, and a lamp head as described above, wherein the lamp post connects the base and the lamp head, and the second light outlet emits light toward the base.

[0015] Furthermore, the lamp post is equipped with a control module, which includes two control circuits connected to the first light-emitting unit and the second light-emitting unit respectively. The control module controls the first light-emitting unit and the second light-emitting unit respectively.

[0016] The lamp holder provided in this application uses a single light source board for both the upper and lower light sources, reducing the number of parts required for assembly and enabling three-dimensional lighting with ambient lighting functionality. The main lighting section uses a reflector for light distribution, balancing anti-glare and illuminance uniformity, thus improving the overall lighting effect. It can illuminate the entire work surface without shadows, and the direct light is soft and grain-free, meeting anti-glare requirements. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the structure of a lamp holder according to a preferred embodiment of this application;

[0018] Figure 2 is a view of the lamp head in Figure 1 from another direction;

[0019] Figure 3 is a cross-sectional view of the lamp holder in Figure 1;

[0020] Figure 4 is the light path diagram of the light emitted from the upper side of the lamp head in Figure 1;

[0021] Figure 5 is a light distribution curve of the light emitted from the upper part of the lamp head in Figure 1;

[0022] Figure 6 is the optical path diagram of the light emitted from the lower side of the lamp head in Figure 1;

[0023] Figure 7 is a light distribution curve of the light emitted from the lower side of the lamp head in Figure 1;

[0024] Figure 8 is a schematic diagram of the desktop uniformity test area;

[0025] Figure 9 is a structural schematic diagram of a lamp according to a preferred embodiment of this application;

[0026] Figure 10 is a side view of the lamp in Figure 9. Detailed Implementation

[0027] The lamp holder and lamp fixture proposed in this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] As shown in Figures 1, 2, and 3, a preferred embodiment of the lamp head 1 of this application includes a housing 101 forming the outer contour of the lamp head 1, and a light source disposed within the housing 101. A first light-emitting port 601 is provided on the upper side of the housing 101, and a second light-emitting port 602 is provided on the lower side of the housing 101. The first light-emitting port 601 and the second light-emitting port 602 are respectively disposed on opposite sides of the surfaces of the housing 101, and their light emission directions are opposite. The light source includes a first light-emitting unit 501 and a second light-emitting unit 502, which are disposed on the same side surface of the same light source plate 5. The two sets of light-emitting units and the two light-emitting ports constitute two sets of upper and lower optical path systems.

[0029] The upper part of the lamp head 1 is an auxiliary lighting system that creates ambient light, and its light path is shown in Figure 4. The first light-emitting unit 501 is located in the middle part of the light source plate 5 and emits light towards the first light outlet 601. The first light outlet 601 is covered with a diffuser 102. The light emitted by the first light-emitting unit 501 is refracted and diffused at the diffuser 102 before being emitted, illuminating the space above and creating ambient lighting. Its light distribution curve is shown in Figure 5.

[0030] The lower side of the lamp head 1 is the main lighting system, providing illumination for reading, writing, and work. Its optical path is shown in Figure 6. Since the second light-emitting unit 502 and the first light-emitting unit 501 are located on the same side surface of the same light source plate 5, their light emission directions are the same. However, the second light-emitting port 602 and the first light-emitting port 601 have opposite directions. Therefore, a reflector 105 is provided above the second light-emitting unit 502, partially covering it. The light emitted by the second light-emitting unit 502 is reflected by the reflector 105 and then emitted towards the second light-emitting port 602. The second light-emitting port 602 is equipped with a microstructure plate 103, whose microstructures can play a role in uniform light refraction. Light passes through the microstructure plate 103 and illuminates the area below the lamp head 1, achieving an anti-glare effect. Its light distribution curve is shown in Figure 7.

[0031] A first light-emitting unit 501 is disposed in the first region on the light source board 5, and a second light-emitting unit 502 is disposed in the second region. Both are independently wired and connected to different control circuits, thus allowing for independent control. That is, either the first light-emitting unit 501 or the second light-emitting unit 502 can be turned on individually, or one of them can be dimmed or brightened. To prevent the two light-emitting units from interfering with each other, an isolation portion 106 is provided between the first and second regions. The isolation portion 106 is made of opaque material and is located at the junction of the first and second regions. In this embodiment, the lamp head 1 is rectangular, and both the first and second regions are rectangular and parallel, with the second region located on both sides of the first region. The isolation portion 106 extends longitudinally and covers the entire junction between the first and second regions, forming two sidewalls distributed on both sides of the first region, thereby separating the first and second regions. The lower end of the isolation portion 106 is disposed adjacent to the light source board 5, and in some cases, it can be attached to the light source board 5. The other end of the isolation portion 106 extends away from the light source board 5, and the extended end forms a first light outlet 601. A diffusion mask 102 is provided at the first light outlet 601.

[0032] The reflector 105, serving as the light distribution element of the second light-emitting unit 502, has an arc-shaped reflective surface. One end of the arc-shaped surface is connected to the isolation portion 106, and the arc-shaped surface extends upward and outward along the direction away from the light source plate 5. The other end forms a second light-emitting port 602. The second light-emitting port 602 is covered by a microstructure plate 103. The distance between the highest point of the arc-shaped surface of the reflector 105 and the light source plate 5 is greater than the distance between the first light-emitting port 601 and the light source plate 5. That is, the first light-emitting port 601 forms a recessed shape downward relative to the reflector 105, which can prevent the first light-emitting unit 501 from being seen during use and provides a certain degree of anti-glare effect.

[0033] In this embodiment, the reflector 105 is part of the inner surface of the housing 101. The reflective arc surface is directly formed from the housing 101, resulting in a simpler, smoother, and more aesthetically pleasing appearance for the lamp holder 1. The reflective surface can be formed by providing a reflective layer on the inner surface of the housing 101. This reflective layer can be formed by surface polishing, electroplating, spraying, or adhesive application; this application does not limit the specific method. Thus, there is no need to separately provide a reflective element, making the structure of the lamp holder 1 simpler, with fewer parts, easier assembly, and reduced product costs.

[0034] In other preferred embodiments, the lamp head 1 can also be circular, with the first region and the second region coaxially arranged, the second region surrounding the first region, and the isolation portion 106 forming an annular wall. The remaining structure is similar to that of the rectangular lamp head 1, and will not be described in detail here.

[0035] The microstructure plate 103 covers the second light outlet, while the back of the light source plate 5 is not obstructed. Therefore, in this embodiment, the back of the light source plate 5 is also covered with a dustproof cover 104 to protect the light source plate and provide insulation.

[0036] The lamp head 1 in this embodiment can be used in the lamp fixture shown in Figures 9 and 10. This lamp fixture is a vertical reading and writing lamp, including a lamp head 1, a lamp pole 2, and a base 3. The lamp pole 2 connects the base 3 and the lamp head 1. Since the lamp head 1 is relatively large, the base 3 can stabilize the center of gravity of the entire lamp and prevent the lamp fixture from tipping over. A control module is located in the middle of the lamp pole 2. The control module includes two control circuits connected to the first light-emitting unit 501 and the second light-emitting unit 502 respectively, which can control the upper and lower light sources of the lamp fixture separately, adjusting brightness, color temperature, and working mode. The lamp pole 2 also has a photosensitive component that can identify ambient brightness and adjust the brightness of the lamp fixture according to the set mode. The power cord runs from the bottom of the lamp pole 2 to the lamp head 1 for electrical connection.

[0037] The second light-emitting port 602 of the lamp head 1 is positioned facing the base 3. That is, the light emitted by the second light-emitting unit 502 is reflected by the reflector 105 and then changes direction to face the base 3, achieving indirect light emission without the lamp itself being visible. The standard height of a floor lamp is H (1.8m ≤ H ≤ 2.1m), the length of the light-emitting surface of the lamp head is L (0.4m ≤ L ≤ 0.7m), and the width is D (0.25m ≤ D ≤ 0.6m). In this embodiment, the overall lamp height H = 2m, as shown in Figure 1, the length of the light-emitting surface of the lamp head 1 is L = 0.6m, and the width is D = 0.4m. Regarding the anti-glare requirements for a 5A quality lighting grade floor lamp: when all light sources are lit, the average brightness at 65°, 75°, and 85° positions should not exceed 4500 cd / m². 2 According to the formula for calculating the surface brightness of lamps. The luminance L of the luminous surface dA in the θ direction V The luminous intensity I of the element area dA in the θ direction is equal to the luminous intensity of the element area VThe ratio of the area to the projection cosθ*dA onto a plane perpendicular to that direction. Testing showed that the luminaire in this embodiment, while meeting AA-level illuminance requirements, exhibits an average luminance of less than 4500 cd / m² at 65°, 75°, and 85°, thus meeting anti-glare requirements. According to the illuminance requirements for vertical eye-protection lamps in the Lighting Product Quality Grading Certification Technical Specifications of the China Quality Certification Center, the luminaire in this embodiment meets AA-level illuminance requirements within the desktop uniformity test area shown in Figure 8, with a uniformity <1.5 (standard is <7).

[0038] In addition to being used in the vertical reading and writing lamp of the embodiment, the lamp holder 1 provided in this application can also be used in table lamps, pendant lamps, etc., and this application does not limit it in this regard.

[0039] The description of the preferred embodiments of this application above is for illustrative purposes and is not intended to exhaustively describe or limit the application to the specific forms disclosed. Obviously, many modifications and variations may be made, which may be apparent to those skilled in the art and should be included within the scope of this application as defined by the appended claims.

Claims

1. A lamp holder, comprising a housing and a light source, wherein, The housing has a first light-emitting port and a second light-emitting port with opposite light-emitting directions on opposite sides. The light source includes a first light-emitting unit and a second light-emitting unit disposed on the same light source plate and on the same side surface of the light source plate. The first light-emitting unit is disposed in a first region, and the second light-emitting unit is disposed in a second region. The first light-emitting unit emits light towards the first light-emitting port. An isolation part is disposed between the first region and the second region. A reflector covers the second region in the light-emitting direction of the second light-emitting unit. One end of the reflector is connected to the isolation part, and the other end is connected to the second light-emitting port. The light emitted by the second light-emitting unit is reflected by the reflector and emitted from the second light-emitting port.

2. The lamp holder according to claim 1, wherein, The lamp head is rectangular, and the second region is located on both sides of the first region; or the lamp head is circular, and the second region is located around the first region.

3. The lamp holder according to claim 1 or 2, wherein, The isolation section is made of opaque material and covers the entire boundary between the first region and the second region.

4. The lamp holder according to claim 3, wherein, One end of the isolation section is disposed adjacent to the light source plate, and the other end of the isolation section extends away from the light source plate, with the end forming the first light outlet.

5. The lamp holder according to claim 4, wherein, The reflective surface of the reflector is an arc-shaped surface, and the distance between its highest point and the light source plate is greater than the distance between the first light outlet and the light source plate.

6. The lamp holder according to claim 5, wherein, The reflector is part of the inner surface of the housing.

7. The lamp holder according to claim 1, wherein, The first light-emitting port is provided with a diffusion mask, and / or the second light-emitting port is provided with a microstructure plate.

8. The lamp holder according to claim 1, wherein, The first light-emitting unit and the second light-emitting unit are connected to different control circuits, and each is controlled independently.

9. A lamp, wherein, It includes a base, a lamp post, and a lamp head as described in any one of claims 1-8, wherein the lamp post connects the base and the lamp head, and the second light outlet emits light toward the base.

10. The luminaire according to claim 9, wherein, The lamp post is equipped with a control module, which includes two control circuits that are respectively connected to the first light-emitting unit and the second light-emitting unit. The control module controls the first light-emitting unit and the second light-emitting unit respectively.

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