CN218819748U

CN218819748U - Lighting device

Info

Publication number: CN218819748U
Application number: CN202223134690.9U
Authority: CN
Inventors: 郭清华; 吴海生
Original assignee: NVC Lighting Technology Corp
Current assignee: NVC Lighting Technology Corp
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-04-07
Anticipated expiration: 2032-11-24

Abstract

The utility model provides a lighting device, which comprises a base, a bracket and a light-emitting module, wherein the base is provided with a supporting platform; the support is arranged on the outer side of the base and comprises an upright rod and a connecting rod, a target illumination area for obliquely placing the display terminal is arranged between the upright rod and the supporting platform, and the display terminal is provided with a display plane; the light-emitting module is arranged at the end part of the connecting rod, and emergent light rays emitted by the light-emitting module obliquely downwards form a first included angle alpha with the normal of the display plane; the emergent light is reflected to the lower part of the supporting platform after passing through the display plane and being illuminated. The display terminal is obliquely placed on the illumination area between the base and the support, light emitted by the light-emitting module obliquely enters the display terminal downwards, diffuse light processed by the scattering piece illuminates the display terminal, and specular reflection light of the display terminal can be prevented from entering human eyes to cause glare, so that the illumination comfort level is improved, and the illumination requirement of using the display terminal in a dark environment is met.

Description

Lighting device

Technical Field

The utility model belongs to the technical field of the technique of LED illumination and specifically relates to a can provide lighting device of illumination for display terminal.

Background

In indoor lighting, light emitted by a lighting device is not only a necessary condition for lighting, but also a basic element for spatial expression and creation of an ambient atmosphere. In home lighting, consumers often need to select global lighting, local lighting, or accent lighting according to their own needs.

In daily life, people need to use electronic products of display terminals such as mobile phones and tablet computers for study, office and entertainment. And in some cases, for example, in order not to influence the sleep of people around at night, after the indoor overall illumination is turned off, the brightness of the screen of the mobile phone or the tablet computer is adjusted, or the local illumination of the display screen is performed by turning on a desk lamp or a night lamp. However, since the display screen has a large brightness contrast with the surrounding background environment and reflects incident light, the human visual field is not comfortable due to the unfavorable brightness distribution, thereby causing glare problems in which visibility of objects is reduced.

The prior art discloses an anti-glare lighting fixture comprising: the light source protection cover is used for fixing the relative position between the optical reflector and the light source boards, and is provided with a light outlet; the optical reflector is an optical reflector with a curved surface and is used for reflecting at least part of incident light to the light outlet; each light source board in the plurality of light source boards faces the reflecting surface of the optical reflector, and the plurality of light source boards comprise at least two light source boards which are arranged in a non-parallel mode, so that asymmetric light with at least two different light distribution curves is reflected to the light outlet through the optical reflector. It optimizes the illuminating effect through setting up a plurality of light source board emergent asymmetric light. However, the lighting lamp is mainly suitable for computer screens or other vertically placed display screens, and the illumination conditions in the vertical direction and the horizontal direction are not considered comprehensively.

Therefore, it is necessary to develop a lighting device for electronic products such as mobile phones and tablet computers.

Disclosure of Invention

In order to solve the above-mentioned problem that prior art exists, the utility model provides a lighting device, the display terminal slope is placed on the illumination area between base and support, and the light slant that sends of luminous module gets into display terminal in addition downwards, and the diffuse scattering light through scattering piece processing throws light on display terminal, and the specular reflection light that can have avoided display terminal gets into people's eye and causes the glare to promote illumination comfort, satisfy the lighting requirements who uses display terminal under the dark surrounds.

In order to achieve the above object, the present invention provides the following technical solutions:

an illumination device comprising a base, a support and a light emitting module, wherein:

a base provided with a support platform;

the support is arranged on the outer side of the base and comprises an upright rod and a connecting rod, a target illumination area for obliquely placing a display terminal is arranged between the upright rod and the supporting platform, and the display terminal is provided with a display plane;

the light-emitting module is arranged at the end part of the connecting rod, and emergent light rays emitted by the light-emitting module obliquely downwards form a first included angle alpha with the normal line of the display plane; and the emergent light rays are reflected to the lower part of the supporting platform after passing through the display plane and being illuminated.

In this lighting device, the target illumination region has been formed between the support platform of base and the pole setting of support for the display terminal is placed to the slope, and sets up the luminescence module that sends light downwards at the connecting rod tip to the slope, has first contained angle and so that get into the display plane between emergent light and the normal on display plane promptly, and reflects to the support platform below, thereby can not cause the glare to people's eye, also promotes the illumination travelling comfort when providing the illumination for display terminal.

As the utility model discloses technical scheme's further description, the light-emitting module includes casing, luminescence unit and optical assembly set up in inside the casing, optical assembly includes reflection part and scattering piece, luminescence unit set up in the side of reflection part, the scattering piece set up in the below of reflection part.

The light emitted by the light-emitting unit is firstly subjected to reflection treatment by the reflection piece and scattering treatment by the scattering piece, so that the finally emergent light is diffuse scattering light and is soft and uniform.

As a further description of the technical solution of the present invention, the reflector is provided with an arc-shaped reflecting surface, the light emitting unit is perpendicular to the scattering plane of the reflector, and is disposed facing the reflecting surface.

As a further description of the technical solution of the present invention, the light emitted by the light emitting unit is emitted to the display plane through the reflecting surface and the scattering plane.

As the utility model discloses technical scheme's further description, supporting platform with the pole setting is provided with first support position and second support position respectively, display terminal's both ends place respectively in first support position with the second supports the position.

As a further description of the technical solution of the present invention, the vertical rod is followed after upwards extending outside the base, court the base direction is bent, a second included angle β is provided between the vertical rod and the supporting platform.

As a technical scheme of the utility model further describe, the casing is equipped with spacing portion, the scattering piece lay in spacing portion is last, and be equipped with and keep away from display terminal's scattering distal end, and be close to display terminal's scattering near-end.

As a further description of the technical solution of the present invention, on the cross section of the lighting device, a rectangular coordinate system is established with the scattering far end as an origin O, a line parallel to the supporting platform as an x-axis, and a line perpendicular to the supporting platform as a y-axis;

coordinates of an end part of the display terminal placed at the second supporting position are (m, n), and the display terminal has the following first relational expression:

and a second relation:

the theta is a supplementary angle of the second included angle beta on the supporting platform;

the L1 is the horizontal distance between the first supporting position and the origin O;

the L2 is the horizontal distance between the bottom end of the vertical rod and the origin O;

the S is the width of the display terminal;

h is the vertical distance between the bottom end of the vertical rod and the original point O.

As a further description of the technical solution of the present invention, from the scattering far end enter place in the emergent ray of the display terminal upper end of second support position, after display terminal upper end, reflected light is gamma with water flat line's contained angle, according to display terminal place in the second supports the relational expression of the tip coordinate (m, n) of position, can obtain following third relational expression:

as a further description of the technical solution of the present invention, according to the first relational expression, the second relational expression and the third relational expression,

the value range of the vertical distance H between the bottom end of the upright rod and the origin O is 350-500mm;

the value range of an included angle gamma between the reflected light at the upper end of the display terminal and the horizontal line is larger than 15 degrees;

the value range of the width S of the display terminal is 150-180mm.

Through preferred, according to the value range of above H, gamma and S, can confirm that the display terminal that the slope was placed falls into the target illumination zone, make the light that light emitting module sent provide the illumination for display terminal, and the reflection light falls into the supporting platform below, prevents the glare to optimize illuminating effect, promote user experience.

Based on foretell technical scheme, the utility model discloses the technological effect who gains does:

the utility model provides a lighting device, which comprises a base, a bracket and a light-emitting module, wherein a support platform of the base and a vertical rod of the bracket form a target lighting area for obliquely placing a display terminal; light that the optical module sent is through reflection and diffuse scattering processing back, and oblique incidence throws light on to the display plane, finally reflects to the supporting platform below, avoids the reflection light directly to get into people's eye, has promoted the illumination comfort level, satisfies the user and uses display terminal's illumination demand under the dark surrounds.

Drawings

Fig. 1 is a schematic structural diagram of the lighting device of the present invention.

Fig. 2 is a sectional view of the light emitting module of the present invention.

Fig. 3 is a schematic view of a part of the light path of the lighting device of the present invention.

Fig. 4 is a schematic coordinate diagram of the lighting device of the present invention.

Fig. 5 is a light intensity distribution curve chart of the lighting device of the present invention.

Detailed Description

To facilitate an understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings and specific examples. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example 1

Fig. 1 is a schematic structural diagram of an illumination device of the present embodiment, fig. 2 is a cross-sectional view of a light emitting module of the present embodiment, and with reference to fig. 1 and fig. 2, an illumination device 100 is used for illuminating a display terminal and a local environment around the display terminal, and the present embodiment is exemplified by a desk lamp. The lighting device 100 comprises a base 1, a bracket 2 and a light-emitting module 3; wherein, base 1 places on horizontal mesa such as desktop like, and its inside is provided with PCB board, power module and control module (not marked in the figure), supplies power and control to luminous module 3. A support platform 11 is provided on the base 1 for placing the display terminal 4.

The display terminal 4 of the embodiment is a mobile phone, a tablet computer (PAD) or a notebook computer, but not limited thereto, and other electronic products with a light and thin display screen are also suitable for the illumination device of the embodiment. The display terminal 4 has a display plane 41, and the display plane 41 is usually a glass mirror, and light rays are reflected after entering the display plane 41.

A support 2 with a rigid structure is disposed outside the base 1, the support 2 includes a vertical rod 21 and a connecting rod 22, a target illumination area 20 is formed between the vertical rod 21 and the supporting platform 11, and the display terminal 4 is obliquely placed in the target illumination area 20, so that the light-emitting module 3 can illuminate the display terminal 4.

The light-emitting module 3 is a device for providing illumination, and is arranged at the end of the connecting rod 22, and a first included angle α is formed between outgoing light rays obliquely emitted downwards by the light-emitting module 3 and a normal f of the display plane 41; the emergent light is reflected to the lower part of the supporting platform 11 after passing through the display plane 41 and being illuminated.

The illumination device 100 of the present embodiment mainly solves the problem of reflection glare when illuminating a VDT (Visual Display Terminal), so as to avoid the influence of too large contrast on the reading/writing/operation of the VDT.

Specifically, in the present embodiment, the incident angle of the light emitted by the light emitting module 3 and the position of the display terminal 4 are controlled, so that the reflected light does not enter human eyes after the light passes through the display plane 41, thereby avoiding glare. The light is reflected to the lower part of the supporting platform 11, and the table top around the base 1 is also illuminated, so that the light and shade contrast around the illuminating device can be further reduced, and the illumination comfort is improved.

The light emitting module 3 includes a housing 31, a light emitting unit 32, and an optical member 33, and the light emitting unit 32 and the optical member 33 are disposed in an inner cavity of the housing 31. The optical assembly 33 includes a reflection member 331 and a scattering member 332 disposed below the reflection member 331, and the reflection member 31 of the embodiment is an optical reflection member with a curved surface, that is, the reflection member 31 is provided with an arc-shaped reflection surface 333 for reflecting light.

As shown in fig. 2, the light emitting unit 32 is attached and fixed to the substrate 321, and the substrate 321 extends vertically downward from the housing 31 and is fixed to a side surface of the reflector 331. Further, the light emitting unit 32 is perpendicular to the diffusion plane 334 of the diffusion member 332 and faces the reflection surface 333. The housing 31 is provided with a stopper 311 having a supporting function, and the diffuser 332 is laid on the stopper 311 and is in close contact with the stopper 311. The scattering member 332 is provided with a scattering far end 3321 far from the display terminal 4 and a scattering near end 3322 close to the display terminal at the joint with the stopper 311.

A part of the light emitted from the light emitting unit 32 is reflected by the reflecting surface 333, then scattered by the scattering plane 334, and finally emitted obliquely downward to the display plane 11 in the scattering space between the scattering near end 3322 and the scattering far end 3321; and another part of the light can be directly scattered by the scattering plane and then exit to the display plane 11 in the scattering space between the scattering near end 3322 and the scattering far end 3321.

In some embodiments, a light control block may be disposed between the proximal scattering end 3322 and the distal scattering end 3321 toward the display terminal 4 to allow light to exit from the scattering space between the proximal scattering end 3322 and the distal scattering end 3321.

In fig. 1, the present embodiment shows the optical path of the light emitted from the light emitting module 3 entering the display plane at the upper end of the display terminal 4, and it can be understood that the optical path entering the display plane 41 below the upper end of the display terminal 4 is also reflected to below the supporting platform 11 and does not directly enter the human eye.

In the present embodiment, the reflecting surface 333 of the reflecting member 331 may be formed by plating a reflecting film; the diffusion member 332 is a PC or PP diffusion plate (film) providing a diffusion processing function, and the haze and the light transmittance can be adjusted according to the diffusion efficiency. In the optical assembly 33 of this embodiment, the reflection member 331 and the scattering member 332 are combined together to perform uniform diffusion illumination, so that the emergent light reaches a soft effect without hard light spots, and after entering the display plane 11, the reflected light enters the support platform 11 and the surrounding desktop, thereby preventing the reflected light from entering human eyes to cause glare.

Example 2

Fig. 3 is a schematic view of a partial optical path of the lighting device of this embodiment, and as shown in fig. 3, the lighting device 100 of this embodiment is provided with a first supporting position 111 on the supporting platform 11 of the base 1, a second supporting position 211 on the upright 21 of the bracket 2, and one end of the display terminal 4 is placed at the first supporting position 111, and the other end is placed at the second supporting position 211. In some embodiments, the first support position 111 and the second support position 211 are adjustable, and may be adjusted according to a suggested or required adjustment range. The display terminal 4 is obliquely arranged between the first supporting position 111 and the second supporting position 211, and can be operated or viewed at a proper angle, so that the fatigue of the cervical vertebra is avoided.

Furthermore, the upright 21 extends upward from the outer side of the base 1 and then bends toward the base 1, that is, the upright bends slightly toward the user, so that a second included angle β is formed between the upright 21 and the supporting platform 11. In some embodiments, the upright 21 and the base 1 extend in an arc-shaped bend, that is, the upright 21 and the base 1 are connected by an arc-shaped bend 23.

The light emitted from the light emitting module 3 also obliquely exits to the display plane 11 in the scattering space between the scattering near end 3322 and the scattering far end 3321 for illumination, and is finally reflected to the lower part of the support platform 11 without directly entering human eyes.

Fig. 4 is a schematic coordinate diagram of the illumination apparatus of the embodiment, and in a cross section of the illumination apparatus, a rectangular coordinate system is established with the scattering far end 3321 as an origin O, a line parallel to the support platform 11 as an x-axis, and a line perpendicular to the support platform 11 as a y-axis. In this embodiment, the display terminal 4 is placed at the end of the second supporting position 211 (m, n), and has the following first relation:

and a second relation:

wherein theta is a supplementary angle of the second included angle beta on the supporting platform;

l1 is the horizontal distance between the first support position 111 and the origin O;

l2 is the horizontal distance between the bottom end 210 of the upright 21 and the origin O;

s is the width of the display terminal;

h is the vertical distance between the bottom end of the vertical rod and the origin O.

The outgoing light entering the upper end of the display terminal disposed on the second supporting position 211 from the far scattering end 3321 passes through the upper end of the display terminal, and the angle between the reflected light and the horizontal line is γ, and the following third relation can be obtained according to the relation of the end seat (m, n) of the display terminal 4 disposed on the second supporting position 211:

/>

according to the first relational expression, the second relational expression and the third relational expression, the vertical distance H between the bottom end of the upright stanchion and the origin O is preferably 350-500mm; the value range of an included angle gamma between the reflected light at the upper end of the display terminal and the horizontal line is larger than 15 degrees; the value range of the width S of the display terminal is 150-180mm.

In the value range, the lighting device of the embodiment can utilize the diffuse scattering light to supplement light for the display terminal, so that the light is soft and comfortable, the reflected light of the display plane does not enter eyes to cause glare, and the lighting requirement of using the display terminal in a dark environment can be met.

Example 3

Fig. 5 is a light intensity distribution graph of the lighting device of the embodiment. The lighting device of embodiment 1 or embodiment 2 is subjected to a light performance test, and a light intensity distribution curve obtained by the test is shown in fig. 5, and specific test results are as follows:

the luminous flux (lm) of the lamp is 809.72, the efficiency (%) of the lamp is 100.00 percent, and the efficacy (lm/w) of the lamp is 0.00;

a central intensity (cd): 277.850, a maximum intensity (cd): 357.130, a maximum intensity angle C =0.0 γ =23.0;

maximum allowable distance height ratio (1/2) C0/180=1.04C90/270=1.47

Maximum allowable distance height ratio (1/4): C0/180=1.20 C90/270=1.53

The upward light transmission ratio (%): 0.56% and the downward light transmission ratio (%): 100.65%;

the upward light transmission ratio (in the lamp) is 0.56%, and the downward light transmission ratio (in the lamp) is 99.44%;

CIE Type is direct Type, and the output luminous flux ratio in a pi solid angle is 81.379%.

Therefore, the lighting device of the embodiment avoids the problem of glare when the display terminal is lighted.

The foregoing is merely illustrative and explanatory of the structure of the present invention, which is described in more detail and with greater particularity, and is not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, many variations and modifications are possible without departing from the inventive concept, and such obvious alternatives fall within the scope of the invention.

Claims

1. An illumination device, comprising:

a base provided with a support platform;

2. A lighting device as recited in claim 1, wherein said light module comprises a housing, a light unit and an optical assembly, said light unit and said optical assembly being disposed inside said housing, said optical assembly comprising a reflector and a diffuser, said light unit being disposed on a side surface of said reflector, said diffuser being disposed below said reflector.

3. A lighting device as recited in claim 2, wherein said reflecting member is provided with an arc-shaped reflecting surface, and said light emitting unit is disposed perpendicularly to a diffusing plane of said diffusing member and faces said reflecting surface.

4. The illumination device as recited in claim 3, wherein the light emitted from the light-emitting unit is emitted obliquely downward to the display plane via the reflection surface and the scattering plane.

5. The lighting device as claimed in claim 2, wherein the supporting platform and the upright are respectively provided with a first supporting position and a second supporting position, and two ends of the display terminal are respectively disposed at the first supporting position and the second supporting position.

6. The lighting device as claimed in claim 5, wherein the upright extends upward from the outer side of the base and is bent toward the base, and a second included angle β is formed between the upright and the supporting platform.

7. The illumination device as claimed in claim 6, wherein the housing is provided with a limiting portion, the scattering member is laid on the limiting portion, and is provided with a scattering distal end far from the display terminal and a scattering proximal end near the display terminal.

8. The illumination device according to claim 7, wherein a rectangular coordinate system is established with the distal scattering end as an origin O, a line parallel to the support platform as an x-axis, and a line perpendicular to the support platform as a y-axis in the cross section of the illumination device;

the coordinates of the end part of the display terminal placed at the second supporting position are (m, n), and the display terminal has the following first relational expression:

and a second relation:

the L1 is the horizontal distance between the first support position and the origin O;

the S is the width of the display terminal;

9. The illumination device as claimed in claim 8, wherein the angle between the reflected light and the horizontal line is γ after the outgoing light from the scattering far end enters the upper end of the display terminal disposed at the second supporting position, and the following third relation is obtained according to the relation of the coordinates (m, n) of the end of the display terminal disposed at the second supporting position:

10. a lighting device as recited in claim 9, wherein based on said first relationship, said second relationship, and said third relationship,

the value range of the width S of the display terminal is 150-180mm.