Emergency lighting lamp

Abstract

The utility model discloses an emergency lighting lamp which comprises an LED light source used for outputting irradiation light; the optical lens covers the LED light source and is used for condensing divergent light spots emitted by the LED light source into rectangular light spots; a light outlet hole is formed in the top of the upper cover, the LED light source and the optical lens are fixed in the upper cover, and the top of the optical lens extends out of the upper cover from the light outlet hole; the base is detachably connected with the upper cover to form an inner cavity of the lamp body, the inner cavity of the lamp body is used for arranging a control circuit board or a driving power supply for supplying power to the LED light source, and an optical lens capable of condensing divergent light spots emitted by the LED light source into rectangular light spots is arranged, so that the shape of a rectangular tunnel bed surface can be matched; accurate lighting of the emergency lighting lamp is completed, light waste caused by scattering of light rays to places outside a road is avoided, the power needed by the lamp can be effectively reduced, and the energy-saving effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lighting lamps and lanterns, in particular to an emergency lighting lamp. BACKGROUND

[0002] At present, emergency lighting lamps need to be installed on the tunnel wall of the subway section, first, the lighting lamps are installed on the tunnel wall about 3.5 meters high from the ground, since the lighting lamps themselves have no spotlight, the irradiation area is circular, and in order to ensure that there is no lighting blind area between the irradiation areas of two adjacent emergency lighting lamps, when the light is irradiated on the ground, a part of the light will be irradiated on the opposite wall, however, in practice, only the tunnel bed area needs to have enough illumination, therefore, the light irradiated on the opposite wall causes a waste, resulting in that the lighting lamp power of the whole tunnel is large, and the construction cost of the tunnel emergency lighting is high. SUMMARY

[0003] The utility model aims at least to solve one of the technical problems existing in the prior art. For this purpose, the utility model provides an emergency lighting lamp, which can condense the outgoing light to the bed surface, avoid light scattering to the place outside the road to cause light waste, and effectively reduce the power required by the lamp.

[0004] According to the emergency lighting lamp of the utility model embodiment, the LED light source is used for outputting irradiation light, the optical lens is covered on the LED light source and is used for condensing the divergent light spot of the LED light source into an oblong light spot, the top of the upper cover is provided with a light outlet hole, the LED light source and the optical lens are fixed in the upper cover, and the top of the optical lens extends out of the upper cover from the light outlet hole, the base is detachably connected with the upper cover to form a lamp body inner cavity, and the lamp body inner cavity is used for arranging the control circuit board or the driving power supply for supplying power to the LED light source.

[0005] Further, the optical lens comprises: a lens substrate, a light source groove for mounting the LED light source is arranged at the center position of the lens substrate, and the lens substrate and the LED light source are fixed in the upper cover; the lens body is in a half-ellipsoid shape and is arranged in the length direction of the lens substrate, and extends out of the upper cover from the light outlet hole, the lens body is provided with a light distribution cavity in communication with the light source groove, the light distribution cavity is a tapered groove concave upward from the bottom of the lens body, the center points of the tapered groove, the lens body and the light source groove coincide, and the cross-sectional spacing between the tapered groove and the lens body gradually increases from both sides of the bottom to the middle top in the width direction, and the cross-sectional spacing between the tapered groove and the lens body gradually decreases from both sides of the bottom to the middle top in the length direction.

[0006] Further, the lens substrate and the lens body are integrally injection molded, and the lens substrate and the lens body are PC materials.

[0007] Further, the lens body has a refractive index of 1.5 to 1.7.

[0008] Further, the top of the upper cover is provided with lens protection plates on both sides of the light emitting hole.

[0009] Further, the lens protection plates on both sides of the light emitting hole are inclined towards the outside of the upper cover.

[0010] Further, the back of the lens protection plate is provided with reinforcing ribs uniformly distributed.

[0011] Further, a waterproof rubber ring is arranged between the base and the upper cover.

[0012] Further, U-shaped mounting brackets are hinged on both sides of the base.

[0013] Further, one of the side walls of the base is provided with a wire outlet hole for the power cord of the driving power supply to pass out of the base.

[0014] According to the emergency lighting lamp of the embodiment of the present application, at least the following beneficial effects are achieved: the optical lens which can condense the divergent light spot emitted by the LED light source into an oblong light spot is arranged, so that the oblong tunnel floor shape can be matched, the precise lighting of the emergency lighting lamp is completed, light scattering to places outside the road is avoided to cause light waste, the power required by the lamp can be effectively reduced, the energy-saving effect is achieved, therefore, compared with the existing lighting lamp, the power of a single lighting lamp can be greatly reduced under the condition of meeting the same ground lighting, thereby the total power of all lighting lamps in the whole tunnel is reduced, in this case, the diameter of the cable for connecting the lighting lamps can also be correspondingly reduced, which not only reduces the cost of the cable, but also reduces the difficulty of construction.

[0015] The additional aspects and advantages of the present application will be partially given in the following description, some will become apparent from the following description, or will be understood by those skilled in the art through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and additional aspects and advantages of the present application will become apparent from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0017] Fig. 1 is a perspective view of the emergency lighting lamp of the embodiment of the present application;

[0018] Fig. 2 is a schematic installation view of the emergency lighting lamp of the embodiment of the present application;

[0019] Fig. 3 is an exploded view of the emergency lighting lamp according to the embodiment of the present application;

[0020] Fig. 4 is a perspective view of the optical lens according to the embodiment of the present application;

[0021] Fig. 5 is a perspective view of the optical lens according to the embodiment of the present application;

[0022] Fig. 6 is an optical path diagram of the optical lens according to the embodiment of the present application in the width direction;

[0023] Fig. 7 is an optical path diagram of the optical lens according to the embodiment of the present application in the length direction;

[0024] Fig. 8 is a light distribution curve diagram of the emergency lighting lamp according to the embodiment of the present application. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0026] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by the upper, lower, front, rear, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0027] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0028] Referring to FIG. 1 to FIG. 3, an emergency lighting lamp according to an embodiment of the present application comprises: an LED light source 100, an optical lens 200, an upper cover 300, and a base 400, wherein the LED light source 100 is configured to output illumination light; the optical lens 200 is arranged on the LED light source 100 and configured to condense the divergent light spot emitted by the LED light source 100 into an oblong light spot; the upper cover 300 is provided with a light outlet hole 301 at the top thereof, the LED light source 100 and the optical lens 200 are fixed in the upper cover 300, and the top of the optical lens 200 extends out of the upper cover 300 from the light outlet hole 301 to avoid the upper cover 300 from blocking the emitted light; and the base 400 is detachably connected with the upper cover 300 to form a lamp body cavity, and the lamp body cavity is configured to accommodate a control circuit board or a driving power supply for supplying power to the LED light source 100.

[0029] The emergency lighting lamp according to the embodiment can condense the divergent light spot emitted by the LED light source into an oblong light spot, so as to match the oblong shape of the tunnel floor and achieve precise lighting of the emergency lighting lamp, thereby avoiding light scattering to places outside the road and causing light waste, effectively reducing the power required by the lamp, and achieving the effect of energy saving. Therefore, compared with the existing emergency lighting lamp, the power of a single emergency lighting lamp can be greatly reduced under the condition of meeting the same ground illumination, and the total power of all emergency lighting lamps in the entire tunnel is reduced, and in this case, the diameter of the cable for connecting the emergency lighting lamps can also be correspondingly reduced, which not only reduces the cost of the cable, but also reduces the difficulty of construction.

[0030] Because the total power of the emergency lighting lamp is reduced, the power consumption of the emergency lighting lamp in the entire tunnel is also reduced, thereby saving the electricity cost, and in addition, when the driving power supply is turned off in an emergency, the emergency lighting lamp in the tunnel can be powered by a backup battery, so in this case, the reduction of the power of the emergency lighting lamp can also prolong the endurance of the backup battery, thereby providing basic protection for the safety escape of the tunnel.

[0031] It should be noted that the LED light source 100 according to the embodiment adopts a high-density low-space design scheme, in which a plurality of LED light emitting chips are implanted in a very small light emitting area to form a light emitting module source, in order to reduce light loss and blockage, the LED light emitting chip adopts a flip chip, and the bottom is fixed with a crystal to avoid the influence of the front soldering circuit on the light emitting effect, the high-density fixed crystal can reduce the distance between the chips, so as to achieve uniform and even light emission, the entire module light source has the best light emitting effect and the highest brightness, the outer ring of the module light source adopts a high dam design, which can reduce the light emitting angle of the entire module light source, and cooperate with the optical lens 200 to achieve better light distribution, illumination and light efficiency.

[0032] As shown in FIG. 1 and FIG. 3, in some embodiments of the present technology, the top of the upper cover 300 is provided with lens protection plates 310 on both sides of the light exit hole 301, which can prevent external objects from colliding with the internal optical lens 200 from both sides.

[0033] In some embodiments of the present technology, the lens protection plates 310 on both sides of the light exit hole 301 are inclined towards the outside of the upper cover 300, which can block the light emitted by the optical lens 200 after condensation.

[0034] As shown in FIG. 3, in some embodiments of the present technology, the back of the lens protection plate 310 is provided with uniformly spaced reinforcing ribs 320, which can not only improve the structural strength of the lens protection plate 310, but also reduce the overall weight of the upper cover 300.

[0035] In some embodiments of the present technology, a waterproof rubber ring 500 is arranged between the base 400 and the upper cover 300, which is used to improve the sealing between the base 400 and the upper cover 300.

[0036] As shown in FIG. 2 and FIG. 3, in some embodiments of the present technology, the two sides of the base 400 are hinged with U-shaped mounting brackets 600, which can control the installation angle of the base 400 and the entire lamp through the hinge mechanism.

[0037] In some embodiments of the present technology, one side wall of the base 400 is provided with a wire exit hole 401, which is used for the power supply line of the driving power supply to exit the base 400, which is convenient for connecting to the power supply system.

[0038] As shown in FIG. 4 to FIG. 7, the optical lens 200 includes a lens substrate 210 and a lens body 220, the lens substrate 210 serves as the mounting carrier of the lens body 220 and is used for mounting mechanism to connect the emergency lighting lamp, and the lens body 220 is used for condensing the light emitted by the LED light source 100.

[0039] Specifically, as shown in FIGS. 5-7, the lens substrate 210 is provided with a light source groove 211 at the center position of the lens substrate 210 for mounting the LED light source 100, and the lens substrate 210 and the LED light source 100 are fixed in the upper cover 300, and in use, the LED light source 100 is embedded in the light source groove 211; in this embodiment, the lens body 220 is in a semi-ellipsoid shape (the ratio of the long axis to the short axis is 2.3), and extends out of the upper cover 300 from the light outlet hole 301 and is arranged in the length direction of the lens substrate 210, and the lens body 220 is provided with a light distribution cavity 221 which is in communication with the light source groove 211, the light distribution cavity 221 is a tapered groove which is concave upward from the bottom of the lens body 220, the size of the bottom end of the tapered groove is smaller than that of the light source groove 211, the center points of the tapered groove, the lens body 220 and the light source groove 211 coincide, and in the width direction, the cross-sectional distance between the tapered groove and the lens body 220 gradually increases from the two side bottoms to the middle top, and in the length direction, the cross-sectional distance between the tapered groove and the lens body 220 gradually decreases from the two side bottoms to the middle top.

[0040] When the LED light source 100 emits light from the center point, the first refraction occurs on the inner surface of the tapered groove, and the second refraction occurs on the outer surface of the lens body 220 before the light is emitted, thereby achieving the effect of light condensation. Since in the width direction, the cross-sectional distance between the tapered groove and the lens body 220 gradually increases from the two side bottoms to the middle top, the light bending angle is large at the two side bottoms when light condensation occurs, and the bending angle changes slowly until the top position, and the bending angle approaches 0 at the center position, and the width direction light condensation angle is ±10°. In the length direction, the cross-sectional distance between the tapered groove and the lens body 220 gradually decreases from the two side bottoms to the middle top, and the light bending angle is small when light condensation occurs from the two side bottoms, and the bending angle changes slowly until the top position, and the length direction light condensation angle is ±10°. The light distribution curve of the emergency lighting lamp is shown in FIG. 8.

[0041] In some embodiments of the technical solution, the lens substrate 210 and the lens body 220 are integrally injection molded, which can save manufacturing process and cost, and the structure is more stable.

[0042] In some embodiments of the technical solution, the lens substrate 210 and the lens body 220 are made of PC material, which has better light transmission performance and lower cost, and the refractive index of the lens body 220 is between 1.5 and 1.7, which can meet the light distribution requirements and optical performance of the present solution.

[0043] In some embodiments of the technical solution, the cross section of the tapered groove is a free curve, which has a smoother transition and more uniform light emission.

[0044] In some embodiments of the technical solution, the lens substrate 210 is a rectangular substrate, rectangular substrate upper end faces of four corners are respectively provided with mounting holes 212, and the lens substrate 210 is connected with the lamp body of the emergency lighting fixture by mounting screws in the mounting holes 212; in the embodiment, the mounting holes 212 are stepped counterbores, and can be fastened and connected by using countersunk screws, and the mounting effect is more concise. In addition, the four corners of the rectangular substrate are provided with round chamfers 213, which can increase the aesthetic degree and prevent scratching.

[0045] As described above, by designing the semi-ellipsoidal lens body and the concave conical light distribution cavity, and the center points of the conical groove, the lens body and the light source groove coincide, and the cross-sectional distance variation of the conical groove and the lens body in the width and length directions is combined to control the regular fold-reflection condensation of the outgoing light, the light dispersion irradiation pattern of the LED light source with an outgoing angle of 120° can be changed from a circle to a rectangular light spot of 110°*30°, and the light beam of the lamp downwardly irradiated from a height of about 3.5 meters is a rectangular light beam of 10 meters*2.5.

[0046] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An emergency lighting fixture, characterized by: The utility model relates to a LED light source (100) for outputting irradiation light rays, an optical lens (200) covering the LED light source (100) and used for condensing the divergent light spot emitted by the LED light source (100) into a rectangular light spot, an upper cover (300) having a light outlet hole (301) at the top thereof, the LED light source (100) and the optical lens (200) being fixed in the upper cover (300), and the top of the optical lens (200) extending out of the upper cover (300) from the light outlet hole (301), a base (400) detachably connected with the upper cover (300) to form a lamp body inner cavity for arranging a control circuit board or a driving power supply for the LED light source (100). The optical lens (200) comprises a lens substrate (210) having a light source groove (211) for mounting the LED light source (100) at the center position thereof, the lens substrate (210) and the LED light source (100) being fixed in the upper cover (300), and a lens body (220) in a semi-ellipsoidal shape and arranged in the length direction of the lens substrate (210) and extending out of the upper cover (300) from the light outlet hole (301), the lens body (220) having a light distribution cavity (221) in communication with the light source groove (211), the light distribution cavity (221) being a tapered groove concave upward from the bottom of the lens body (220), the center points of the tapered groove, the lens body (220) and the light source groove (211) being coincident, and the cross-sectional distance between the tapered groove and the lens body (220) gradually increasing from the two side bottoms to the middle top in the width direction, and gradually decreasing from the two side bottoms to the middle top in the length direction. The lens substrate (210) and the lens body (220) are integrally injection molded, and the lens substrate (210) and the lens body (220) are made of PC material. The lens body (220) has a refractive index of 1.5 to 1.

7. The top of the upper cover (300) is provided with lens protection plates (310) on both sides of the light outlet hole (301).

2. An emergency luminaire according to claim 1, characterised in that: The lens protection plates (310) on both sides of the light outlet hole (301) are inclined toward the outside of the upper cover (300). The back of the lens protection plate (310) is provided with reinforcing ribs (320) uniformly and spacedly distributed. A waterproof rubber ring (500) is arranged between the base (400) and the upper cover (300).

3. An emergency luminaire according to claim 2, characterised in that: U-shaped mounting brackets (600) are hingedly connected to both sides of the base (400).

4. An emergency luminaire according to claim 3, characterised in that: An outlet hole (401) is formed in one side wall of the base (400) for the power supply line of the driving power supply to pass out of the base (400).

5. An emergency lighting fixture according to claim 1, wherein: ​ 6. An emergency luminaire according to claim 5, characterised in that: ​ 7. An emergency luminaire according to claim 6, characterised in that: ​ 8. An emergency lighting fixture according to claim 1, wherein: ​ 9. An emergency lighting fixture according to claim 1, wherein: ​ 10. An emergency lighting fixture according to claim 1, wherein: ​

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