CN108074359A - Alarm - Google Patents

Abstract

The present invention proposes a kind of alarm suitable for wall dress, including：One support plate (21)；At least three luminescence units (23) are arranged in the support plate (21), and are spaced arrangement of turning up the soil along a semicircle camber line (C) generally；At least one reflector (25), it can be fixed in the support plate (21) and each reflector is suitable for accommodating at least one luminescence unit (23), the reflector (25) generally extends or is arranged in a semi-circular shape, the inner surface of the reflector is reflecting surface and is configured to the light that the luminescence unit (23) is sent covering space (V) reflection towards a cuboidal optics, wherein the alarm is placed in the center of a top margin of optics covering space (V).

Description

Alarm

Technical field

This patent disclosure relates generally to what is used in the notice equipment more particularly to fire-fighting system occurred for alert emergency event Visual notice equipment, also referred to as visible alarm (VAD：Visual Alarming Device) or optical alarm (Optical Alarming Device)。

Background technology

Visible alarm is widely used in fire alarm system, is used for sending out to Field Force when being in an emergency Go out visible alarm instruction, such as high intensity strobe light.In general, visible alarm (VAD) is via live circuit (Field Line) or Radio Link is connected to a control device (Control Panel).When detect emergency occur (such as There is fire behavior) when, control device can trigger VAD via the scene circuit so that VAD sends the visible high intensity police of human eye Light is reported, Field Force to be prompted to withdraw danger zone in time.

Under normal conditions, VAD can be installed on ceiling (referred to as " top dress "), can also be mounted on wall (letter Referred to as " wall dress ").Fig. 1 schematically illustrates a kind of schematic diagram of wall dress VAD 100.As shown in Figure 1, VAD 100 is mounted on On wall W, and one can be illuminated generally in cube or the cubic space V of cuboid, wherein VAD 100 is located at this cube At the point midway of one top margin of SPACE V.Light distribution on each surface of this cubic space V needs to meet related fire-fighting The requirement of standard.Cubic space V is usually described with (X, Y, Y), and wherein X represents setting height(from bottom)s of the VAD 100 apart from ground, example As 2.4m, Y represent that VAD light can reach maximum distance and on the direction of parallel metope on the direction of vertical wall The covered scope of VAD light institute, such as Y=10m.Cubic space V is also referred to as optics covering space (Coverage as a result, Volume), it is also the needs specified in related fire protection criteria by the bright space of alarm illumination.In actual installation VAD 100, As long as its room installed, which is less than the optics, covers SPACE V, then it can ensure the warning effect of VAD.

With the maturation of light emitting diode (LED) technology, LED chip is gradually used as the light source in VAD.In order to meet phase Requirement of the pass standard for VAD light distribution, it usually needs using the LED chip of high intensity, power consumption is also higher.

For this reason, it may be necessary to propose a kind of VAD using LED chip as light source, the situation of relevant criterion requirement can met Under, reduce the performance requirement to single led chip.

The content of the invention

It is an object of the present invention to provide it is a kind of suitable for wall dress visible alarm (VAD), can with power consumption compared with Low LED chip is as light source.

According to the present invention on one side, the present invention proposes a kind of alarm suitable for wall dress, including：One support Plate；At least three luminescence units are arranged in the support plate, and are separated from each other ground along a semicircle camber line generally Arrangement；At least one reflector, can be fixed in the support plate and each reflector is at least one described suitable for accommodating Luminescence unit, the reflector generally extend or are arranged in a semi-circular shape, and the inner surface of the reflector is reflection table Face and the light for sending the luminescence unit is configured to towards a substantially cuboidal optics covering space reflection, wherein institute The optical centre of equal value for stating alarm is placed in the center that the optics covers a top margin in space.

Preferably, if having two or more reflectors in alarm, adjacent two reflectors are by described in Luminescence unit in two reflectors is spaced apart from each other.Optionally, the interval between the adjacent luminescence unit of each two is equal. Optionally, the interval between the adjacent luminescence unit of each two is gradual change.Optionally, each luminescence unit includes two or two Or more LED chip.

Above-mentioned alarm has used multiple discrete luminescence units, and these luminescence units are generally along a semicircle camber line It strings out at each interval.Using this distributed arrangement, multiple luminescence units can export for the light intensity of alarm jointly It contributes, this reduces the requirements to each luminescence unit output intensity.If necessary, multiple luminescence units can be configured as Higher luminous flux is provided, to achieve the purpose that cover greater room.Meanwhile luminescence unit is arranged on two of semicircle camber line Near endpoint and coordinate the catoptric arrangement of such as reflector, the light distribution at the top surface by dipped beam covering SPACE V can be improved, So as to be easier to meet relevant criterion requirement.Example shown in Fig. 2 can use the relatively low luminescence unit of power consumption and can as a result, Meet the light distribution of standard requirement.And then the design of reflector can cover the light that each luminescence unit is sent towards light Lid space reflection.This design of reflector can also meet the alarm proposed in relevant criterion in the direction indicated well The requirement of light intensity output, and effective compensation light distribution.

Preferably, each reflector is arranged to part around at least one luminescence unit being placed in one, and The light extraction opening of the reflector is arranged on the periphery of the semicircular ring.Preferably, the inner surface of the reflector is concave surface, The reflector has the first and second substantially opposite reflective portions and the luminescence unit is placed in described first and second instead It penetrates between part, wherein the direction that at least one of described first and second reflective portion faces away from the luminescence unit is inclined Tiltedly.The design of first and second reflective portions can increase the light distribution area of luminescence unit output light, sent out so as to compensate The light distribution in the region outside light unit straight line range of exposures.In other words, the two reflective portions can send luminescence unit More multi-energy wanted to standard assigned direction (light covering SPACE V) reflection.

Optionally, institute is faced away from close to first and second reflective portion of the reflector at the semicircular ring midpoint The direction for stating luminescence unit tilts.Optionally, for the reflector near semicircular ring endpoint, close to the semicircular ring endpoint First reflective portion tilted towards the luminescence unit, second reflective portion away from the luminescence unit tilt.

Preferably, first reflective portion of at least one reflector or the second reflective portion include adjacent to each other two A or more than two sub- reflective portions, every sub- reflective portion are the reflecting surface of a conical surface.Using multiple sub- reflectings surface The curvature or orientation of the sub- reflecting surface of incident light settings of different angle can be more efficiently directed to, so as to improve reflection efficiency.

Preferably, each reflector further includes the 3rd reflective portion, with first and second reflecting part Point adjacent and towards the luminescence unit accommodated in the reflector, the 3rd reflective portion is concave surface.Preferably, it is described 3rd reflective portion includes at least two sub- reflective portions adjacent to each other, and every sub- reflective portion is a conical surface type Reflecting surface.The light backwards to light covering space that 3rd reflective portion can send luminescence unit is covered towards the optics Lid space reflection.

Preferably, each reflector further includes the first auxiliary reflective portion, the institute being arranged above the luminescence unit The edge of reflector is stated, and the first auxiliary reflective portion extends into concave surface, it is preferable that the first auxiliary reflective portion With multiple concave surfaces corresponding with LED chip number and position.Auxiliary reflective portion can enhance the top surface in light covering space The light distribution of near zone.

Optionally, alarm further includes a translucent cover, at least covers the luminescence unit and the reflector, described At least one prism portion is provided on translucent cover, the light that the luminescence unit is sent can be guided to be covered towards the optics Space scattering.Preferably, at least one prism portion include it is at least one along the translucent cover circumferentially extend prism portion or Person, including at least one prism portion extended along the direction circumferentially vertical with the translucent cover.Setting prism portion on translucent cover can Further to expand the angle of flare that luminescence unit emits beam.

Preferably, alarm further includes an interchangeable shell, can at least partly cover the translucent cover, and institute It is dismountable to state at least one luminescence unit and the reflector.Preferably, the interchangeable housing portions have semicircle for one First shell of ring opening, the semicircular ring opening are suitable for exposing the luminescence unit and the reflector.It is described replaceable outer Shell can also be a shell that the translucent cover is completely covered.Using interchangeable housing portions and dismountable luminescence unit or reflective Cup, can obtain two kinds of products of audible-visual annunciator and sound alarm subsystem, without excessively being changed in same foundation structure.This Kind designs processing easy to produce, thereby also reduces production cost.

Hereafter by a manner of clearly understandable, preferred embodiment is described with reference to the drawings, to above-mentioned characteristic, the skill of switching device Art feature, advantage and its realization method are further described.

Description of the drawings

The following drawings only does schematic illustration and explanation to the present invention, not delimit the scope of the invention.

Fig. 1 schematically illustrates a kind of optics covering space of wall dress VAD.

Fig. 2 shows the schematic diagram of VAD according to an embodiment of the invention.

Fig. 3 shows the three-dimensional exploded view of VAD shown in Fig. 2.

Fig. 4 A~4C schematically show the layout viewing of light source in VAD in accordance with another embodiment of the present invention.

Fig. 5 A and 5B show the structure diagram of a reflector in VAD according to an embodiment of the invention.

Fig. 6 shows the schematic diagram of translucent cover in the VAD of another embodiment according to the present invention.

Fig. 7 A~7D show the schematic diagram of the shell of the VAD of further embodiment according to the present invention.

Specific embodiment

In order to which the technical features, objects and effects to invention are more clearly understood, now control description of the drawings is of the invention Specific embodiment, in the various figures identical label represent the component that structure is identical or structure is similar but function is identical.

Herein, " schematic " expression " serving as example, example or explanation " should not will be described herein as " showing Any diagram, the embodiment of meaning property " are construed to a kind of preferred or more advantageous technical solution.

To make simplified form, part related to the present invention is only schematically shown in each figure, they are not represented Its practical structures as product.In addition, to readily appreciate simplified form, with identical structure or function in some figures Component only symbolically depicts one of those or has only marked one of those.

Herein, "one" not only represents " only this ", can also represent the situation of " more than one ".In addition, Herein, " first ", " second " etc. are only used for mutual differentiation rather than the significance level and the order that represent them etc..

Fig. 2 shows wall dress VAD 200 according to an embodiment of the invention.Fig. 3 is schematically illustrated shown in Fig. 2 The exploded view of VAD200.In the example of Fig. 2 and Fig. 3, it is anti-that VAD 200 includes a luminescence unit 23,6 of support plate 21,6 25, translucent covers 27 of light cup and a shell 29.Here, for ease of description, 25 refer to the general designation of reflectors or refer to Any reflector.25x (x=1,3,5) refers to single specific reflector.VAD 200 is when in use according to side as shown in Figure 1 Formula is mounted on wall.In other words, the optical centre of equal value of VAD 200 is placed in the center of a top margin of optics covering SPACE V Position.After on wall, the 21 place plane of support plate of VAD 200 is parallel to metope W and is capable of the transparent part A of light transmission Downwards.

As shown in Figures 2 and 3, the shape of VAD 200 is generally in disc.However, the shape of VAD is not limited to this, It can also be spherical shape, hemispherical, rectangle, spheroid shape etc..Preferably, as shown in figure 3, translucent cover 27 is a complete circle Dish type cover can be fastened in the support plate 21, so as to form a cavity.Luminescence unit 23 and reflector 25 are contained in this In cavity.Shell 29 can be fastened on translucent cover 27.Shell 29 also has there are one generally half ring-like opening 292, transparent Part A can expose at the opening 292, which just covers luminescence unit 23 and reflector 25.

In the example of Fig. 2 and Fig. 3,6 luminescence units 23 are arranged in support plate 21.Support plate 21 is preferably a drive Dynamic circuit board can support luminescence unit 23 and can transfer drive signal to each luminescence unit 23.In this instance, support plate 21 be main circuit board, generally into disc.Optionally, support plate 21 or semi-circular are just used for placing luminous Unit.Preferably, support plate 21 can also be the driving plate rather than main circuit board of luminescence unit.

6 luminescence units 23 are arranged to a semicircle camber line C along in support plate 21 and string out at each interval.It is preferred that Ground, the semicircle camber line C is close to the edge of support plate 21.Each luminescence unit 23 can include one, the LED core of two or more Piece.In the example of Fig. 2 and Fig. 3, each luminescence unit 23 tool is there are two the LED chip being arranged side by side, and adjacent luminous list Interval between member 23 is generally equalized.Optionally, according to actual needs, the number of luminescence unit 23 can also be three, Four or five or more.

In fig. 2,6 reflectors 25 can be fixed in support plate 21 and be arranged together to form a semicircular ring.Instead The opening of light cup is arranged on the periphery of the semicircular ring.Each reflector 25 can accommodate a luminescence unit 23.It is each reflective The inner surface of cup 25 is arranged to reflecting surface, these reflecting surfaces can such as scheme the light that luminescence unit 23 is sent towards one The covering SPACE V reflection of optics shown in 1, wherein VAD 200 are placed in the center of a top margin of optics covering SPACE V.It can Selection of land, in Fig. 2 and Fig. 3, the number of reflector 25 can also be arranged to 1,2,3 or more.It can be in each reflector Accommodate one, two or more luminescence units 23.In the case of more than two reflectors, two adjacent reflectors can be with Luminescence unit in respective reflector is spaced apart.Preferably, 6 reflectors 25 in Fig. 3 are configured to an integrated molding Part 26 substantially extends in semi-circular.

In above-described embodiment, VAD 200 has used multiple discrete luminescence units, and these luminescence units are generally along one A semicircle camber line strings out at each interval.Using this distributed arrangement, multiple luminescence units can be the light of VAD jointly Strong output contributes, and this reduces the requirements to each luminescence unit output intensity.If necessary, multiple luminescence units also may be used Higher luminous flux is provided to, to achieve the purpose that cover greater room.Meanwhile luminescence unit is arranged on semicircle camber line Two endpoints nearby and coordinate such as reflector catoptric arrangement, can improve by dipped beam covering SPACE V top surface at light Strong distribution, so as to be easier to meet relevant criterion requirement.The luminous list that example shown in Fig. 2 can use power consumption relatively low as a result, Member and the light distribution that disclosure satisfy that standard requirement.And then the light that the design of reflector can send each luminescence unit Towards light covering SPACE V reflection.This design of reflector can also meet the VAD proposed in relevant criterion and specify well The requirement that light intensity exports on direction, and effective compensation light distribution.

Fig. 4 A~4C schematically illustrate the schematic diagram of the distributed arrangement of three kinds of luminescence units.For the sake of simplicity, Fig. 4 A- The components such as reflector and shell are eliminated in 4C.In Figure 4 A, VAD 400A are included on symmetrical 6 lists that shine of center line L-L ' Member.These luminescence units string out at each interval along a semicircle camber line C.For example, luminescence unit 432 is positioned close to half Near the midpoint L of circular arc line.Luminescence unit 432 has a LED chip.Luminescence unit 436 is positioned close to semicircle camber line C's At endpoint (B1, B2).Luminescence unit 436 has three LED chips.Centrally located luminescence unit 434 has two LED Chip.In other words, the reflector of the endpoint in the example of Fig. 4 A closer to semicircle camber line C includes more LED chips.It is this Design is engaged with the design of reflector, is more advantageous to compensation in the light intensity point in the region of optics covering space top surface Cloth.

In figure 4b, VAD 400B are included on symmetrical 6 luminescence units of center line L-L '.These luminescence units are along one Semicircle camber line C is stringed out at each interval.Each luminescence unit 435 includes single LED chip, and the adjacent luminous list of each two Interval between member gradually increases from midpoint L to endpoint.

In figure 4 c, VAD 400C are included on symmetrical 6 luminescence units of center line L-L '.These luminescence units are along one Semicircle camber line C is stringed out at each interval.Each luminescence unit 439 includes single LED chip, and luminescence unit 438 is in institute The both sides for stating semicircle camber line C are staggered.

6 reflectors 25 as shown in Figures 2 and 3 are arranged in the shape of a semicircular ring, and the opening side of each reflector To being all disposed on the periphery of the semicircular ring.6 reflectors 25 are symmetrical on center line L-L '.Below with close in Fig. 2 and Fig. 3 The common feature of reflector in the present invention is described exemplified by a reflector 251 of midpoint L.Fig. 5 shows a reflector 251 Concrete structure.As shown in figure 5, reflector 251 is arranged to partially surround luminescence unit 23, and its inner surface is reflecting surface. Luminescence unit 23 is two LED chips being arranged side by side in Fig. 5.Preferably, reflector inner surface is generally in concave surface.Reflector Inner surface can be a continuous curved surface, more than two subsurfaces adjacent to each other can also be included.Optionally, it is reflective Part surface in cup can also be arranged to convex surface, as long as it can reflect light towards light covering SPACE V.

As shown in Figure 5A, reflector 251 has three main reflective portion 251_1,251_3 and 251_ adjacent to each other 5.Reflective portion 251_1 faces luminescence unit 23, and substantially extends in concave surface in the inner circumferential of semicircular ring.Fig. 5 B show figure The partial cutaway view splitted in 5A along M-M ' lines.The light that luminescence unit 23 is sent can be covered sky by reflective portion 251_1 towards light Between V reflect.Preferably, as shown in Figure 5A, reflective portion 251_1 can also specifically include such as three sub- reflective portion a, b and C, they are abutted together.Every sub- reflective portion extends along the direction of semicircular ring inner circumferential, and different sub- reflective portions are stacked on top of each other. The curvature of these three sub- reflective portions (sub- reflecting surface), inclination angle are mutually slightly different, to be carried out to the incident light of different angle Effectively reflection.

In the reflector 251 shown in Fig. 5 A, reflective portion 251_3 and reflective portion 251_5 are substantially opposite, and it is single to shine Member 23 is placed between reflective portion 251_3 and 251_5.As shown in Figure 5A, reflective portion 251_3 and 251_5 are faced away from The direction of luminescence unit 23 tilts, so as to emit beam luminescence unit 23 towards the covering SPACE V reflection of its light.Reflective portion The design of 251_3 and 251_5 can increase the light distribution area of 23 output light of luminescence unit, so as to compensate in luminescence unit 23 The light distribution in the region outside straight line range of exposures, in other words, the two reflective portions can send luminescence unit 23 more Assigned direction (the light covering SPACE V) reflection that multi-energy is wanted to standard.

Preferably, in order to ensure light covering SPACE V adjacent top surface region light distribution, reflector 251 positioned at The edge of 23 top of luminescence unit is additionally provided with auxiliary reflective portion 251_7.It is circumferentially to aid in reflective portion 251_7 Concave surface.Preferably, one concave surface so is set for each LED chip.In the example of Fig. 5 A, reflector 251 have comprising The auxiliary reflective portion 251_7 of two concave surfaces.Auxiliary reflective portion 251_7 can enhance the adjacent top surface in light covering SPACE V The light distribution in region.

In the example of Fig. 5 A, reflector 251 also has there are one bottom surface 251_8.Bottom surface 251_8 is equipped with opening 251_9, Luminescence unit 23 is adapted to pass through opening 251_9 and exposes its light-emitting area.Bottom surface is preferably also reflecting surface.Optionally, instead Light cup can also not have bottom surface, and be directly anchored in support plate 21.On the one hand, bottom surface 251_8 can be in reflector 251 The stray light progress of appearance is further reflective, to efficiently use the energy of luminescence unit.On the other hand, bottom surface 251_8 is deposited It is more firm durable in the overall structure for 6 reflectors that can be arranged together.

Return now to Fig. 2 and Fig. 3.6 reflectors 250 in Fig. 2 and Fig. 3 on center line L-L ' symmetrically, i.e. center line both sides The structure of symmetrical reflector is identical.The structure of reflector 253 and reflector 255 and the structure of reflector 251 are substantially similar.Institute Unlike, the inclined direction of two substantially opposite reflective portion 253_3 and 253_5 of reflector 253 is different.By close end The direction that the reflective portion 253_3 of B1 faces away from luminescence unit 23 tilts, and depends on submedial reflective portion 253_5 towards institute The direction for stating luminescence unit tilts.It is this can be designed so that luminescence unit is sent in reflector 253 light more towards End B reflects.It is further preferable that reflective portion 253_3 includes stacked three sub- reflective portion e, f, d.Three sub- reflecting parts Divide and be respectively conical surface, and the parameters such as its curvature or inclined direction are different from each other.Preferably, the face that sub- reflective portion e is occupied Product is more than the sum of other two.The direction that sub- reflective portion e faces away from luminescence unit tilts.Sub- reflective portion f and d direction hairs The direction of optical element tilts.Optionally, reflective portion 253_3 can also have there are one continuous reflecting surface or with 2 A, the sub- reflective portion of 4 or more.As shown in figure 3, reflective portion 253_5 can be a continuous reflecting curved surface, also may be used To be the surface with multiple sub- reflectings surface.Being designed with for the reflective portion 253_3 of reflector 253 is beneficial to send luminescence unit Light towards semicircular ring end direction reflect, with enhance by dipped beam covering SPACE V top surface region light distribution.

It is different from the reflector 251 in Fig. 5 A, in Fig. 3 two of reflector 255 substantially opposite reflective portion 255_3 and The inclined direction of 255_5 is different.It is tilted by the reflective portion 255_3 of close end B towards the direction of luminescence unit, and close to center line Reflective portion 255_5 face away from the luminescence unit direction tilt.This can be designed so that in reflector 255 shines The light that unit is sent is reflected more towards end B.It is further preferable that reflective portion 255_3 is anti-including three stacked sons Penetrate part.Three sub- reflective portions are respectively conical surface, and the parameters such as its curvature or inclined direction are different from each other.Preferably, The area of three sub- reflective portions is about the same.Preferably, in reflector 255, reflective portion 255_1 is the circle for tending to plane Bore curved surface.Reflective portion 255_1 preferably has two or more sub- reflective portions.Reflective portion 255_1 is used Tending to the reflecting surface of plane can preferably reflect light towards the direction by close end B, and sky is covered by dipped beam so as to enhance Between middle top surface region light distribution.

With reference to Fig. 3, the effect of translucent cover 27 and shell 29 is to protect VAD internal components, and enables to what VAD was sent Light can project away.Optionally, translucent cover 27 discrete in Fig. 3 and shell 29, which could alternatively be one, has transparency window Shell replaces with an all-transparent shell, even translucent cover 27 can be saved and be directly exposed to the luminescence unit outer. Preferably, alarm shown in Fig. 3 is an audible-visual annunciator.There are one channel portions 272 for the tool of translucent cover 27.When shell 29 is detained It closes when on translucent cover 27, the operatic tunes is formed at sound channel portion 272.Part 27 is integrally formed using one sound can be achieved at the same time as a result, The effect in road and optical clear cover so that entire product integrated level higher, manufacturing procedure are simple.

Fig. 6 schematically illustrates an alternative of translucent cover 27.As shown in fig. 6, translucent cover 67 is in its hyalomere Divide on A and be provided at least one prism, to be scattered to the light that luminescence unit is sent.In the example of fig. 6, prism is placed in On the inner surface of translucent cover 67.Two prisms 673 are schematically illustrated in Fig. 6, each prism 673 circumferentially prolongs along translucent cover It stretches.The number of prism 673 can also increase or decrease as needed.Preferably, the inner surface of translucent cover 67 is also provided with Prism 675 as shown in Figure 6.Prism 675 extends along perpendicular to circumferential direction.Set prism can be effectively on translucent cover Expand the angle of flare that single source emits beam, so as to improve the light distribution of VAD.

Fig. 7 A~7D schematically illustrate the VAD of another embodiment according to the present invention.The VAD can be outer by replacing Shell come realize audible-visual annunciator (beacon and sounder) arrive sound alarm subsystem (sounder) conversion.In this embodiment, At least one of reflector and luminescence unit are dismountable.Fig. 7 A show that shell 29 and translucent cover 27 snap together in Fig. 3 Stereogram afterwards.As shown in Figure 7 A, the tool of shell 29 is there are one the opening of semicircular ring, and the transparent part A of translucent cover 27 is from the opening Expose.Fig. 7 B show the partial cutaway view that M-M ' is splitted along Fig. 7 A.As shown in Figure 7 B, translucent cover 27 covers 23 He of luminescence unit Reflector 25.Shell 29 is fastened on translucent cover 27.Set on translucent cover 27 there are one protrusion 278, just block shell 29 with Gap between translucent cover 27.Shell 29 in Fig. 7 A and 7B is replaced with into a complete disk shell 79, and is shed anti- Light cup 25 then can obtain sound alarm subsystem as seen in figure 7 c.Fig. 7 D show the partial cutaway view of sound alarm subsystem, wherein shell 79 Translucent cover 27, and uneasy dress reflector 25 and luminescence unit 23 in sound alarm subsystem is completely covered.Thus, it is possible in same foundation knot Two kinds of products of audible-visual annunciator and sound alarm subsystem are obtained on structure, without excessively being changed.This design processing easy to produce, Thereby also reduce production cost.

It should be appreciated that although this specification is described according to each embodiment, not each embodiment only includes one A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say Bright book is as an entirety, and the technical solutions in each embodiment can also be properly combined, and forming those skilled in the art can be with The other embodiment of understanding.

Those listed above is a series of to be described in detail illustrating only for possible embodiments of the invention, They are not to limit the scope of the invention, all equivalent embodiments made without departing from skill spirit of the present invention or change More, such as the combination, segmentation or repetition of feature, should all be included in the protection scope of the present invention.

Claims (15)

1. a kind of alarm suitable for wall dress, including：

One support plate (21)；

At least three luminescence units (23) are arranged in the support plate (21), and along a semicircle camber line (C) generally It is spaced arrangement of turning up the soil；

At least one reflector (25), can be fixed in the support plate (21) and each reflector is suitable for accommodating at least one A luminescence unit (23), the reflector (25) generally extend or are arranged in a semi-circular shape, the reflector Inner surface is reflecting surface and is configured to the light for sending the luminescence unit (23) one substantially cuboidal optics of direction Space (V) reflection is covered, wherein the optical centre of equal value of the alarm is placed in a top margin of optics covering space (V) Center.

2. alarm as described in claim 1, wherein two adjacent reflectors (25) are by the hair in described two reflectors Light unit (23) is spaced apart from each other.

3. alarm as claimed in claim 1 or 2, wherein, the interval between the adjacent luminescence unit of each two (23) is equal.

4. alarm as claimed in claim 1 or 2, wherein, the interval between the adjacent luminescence unit of each two (23) is gradually Become.

5. the alarm as described in any in claim 1-4, wherein, each luminescence unit (23) includes two or two or more LED chip.

6. the alarm as described in any in claim 1-5, wherein, each reflector (25), which is arranged to partly surround, puts In at least one luminescence unit (23) therein, and the light extraction opening of the reflector (25) is arranged on the semicircular ring On periphery.

7. the alarm as described in any in claim 1-6, wherein, the inner surface of the reflector (25) is concave surface, described It is described that there is reflector substantially opposite the first and second reflective portions (251_3,251_5) and the luminescence unit (23) to be placed in Between first and second reflective portions (251_3,251_5), wherein at least one of described first and second reflective portion direction It is tilted away from the direction of the luminescence unit (23).

8. alarm as claimed in claim 7, wherein, close to described the of the reflector (251) of the semicircular ring midpoint (L) One and second reflective portion (251_3,251_5) face away from the luminescence unit (23) direction tilt.

9. alarm as claimed in claim 7, wherein, for being located at the reflector (255) of semicircular ring endpoint (B1, B2) nearby For, first reflective portion (255_3) close to the semicircular ring endpoint (B1, B2) is inclined towards the luminescence unit (23) Tiltedly, second reflective portion (255_5) tilts away from the luminescence unit (23).

10. the alarm as described in any in claim 7-9, wherein, first reflective portion of at least one reflector Or second reflective portion include two or more sub- reflective portions (e, f, d) adjacent to each other, every sub- reflective portion is The reflecting surface of one conical surface.

11. the alarm as described in any in claim 1-10, wherein, each reflector (25) further includes one the 3rd Reflective portion (251_1), it is adjacent with first and second reflective portion (251_3,251_5) and towards the reflector (25) luminescence unit (23) accommodated in, the 3rd reflective portion are concave surface.

12. alarm as claimed in claim 11, wherein, the 3rd reflective portion (251_1) include it is adjacent to each other extremely Few two sub- reflective portions (a, b, c), every sub- reflective portion are the reflecting surface of a conical surface type.

13. the alarm as described in any in claim 1-12, wherein, each reflector (25) further includes the reflection of the first auxiliary Partly (251_7) is arranged at the edge of the reflector above the luminescence unit, and the first auxiliary reflecting part Divide and extend into concave surface, it is preferable that the first auxiliary reflective portion has corresponding with LED chip number and position multiple recessed Face.

14. the alarm as described in any in claim 1-13 further includes a translucent cover (27), at least covers the hair Light unit (23) and the reflector (25) are provided at least one prism portion (673,675) on the translucent cover, can draw It leads the light that the luminescence unit is sent to scatter towards optics covering space (V), it is preferable that at least one prism portion Including at least one prism portion (673) circumferentially extended along the translucent cover (67), alternatively, edge is circumferential with the translucent cover (67) At least one prism portion (675) of vertical direction extension.

15. the alarm as described in any in claim 1-14 further includes an interchangeable shell (29,79), at least Part covers the translucent cover (27), and at least one of the luminescence unit and the reflector are dismountable, it is preferable that The first shell (29) that the interchangeable housing portions have semicircular ring opening for one, the semicircular ring opening are suitable for exposing the hair Light unit and the reflector or the interchangeable housing portions are a shell (79) that the translucent cover is completely covered.