Light shield-reflector for a lighting implement

The light shield-reflector for a lighting implement comprising a substantially tubular base associated with a reflector element of multiple type constituted by a set of superimposed wings spaced apart from each other. The structure of the wings shows substantially a "U"-shaped plan and a parabolic cross-section. The light flux forms a cone-shaped light and diffuses by passing through the space existing between two adjacent wings.

The object of the present invention is a light shield-reflector for a 
lighting implement comprising a substantially tubular base, provided with 
a first end and with a second end, and destined to be assembled in such a 
way as to surround the socket shell engaged by the relevant bulb of the 
lighting implement, with the first end of said base being associated with 
a fastening flange, the second end of said base being associated with a 
reflector element of the multiple type, wherein the main axes of the base, 
of the reflector element, of the socket shell and of the bulb are 
coincident with the main axis of the same implement, with said main axis 
being also perpendicular to said fastening flange. 
Light shield-reflectors are already known, only for vertical-axis lighting 
equipment, wherein the reflector element of the multiple type is requested 
to cooperate with a bulb having its base directed downwards, or upwards. 
Such light shield-reflectors mainly show the characteristics of: 
directing downwards the light beam emitted by the light source, which 
otherways would be dispersed upwards and sideways, improving the overall 
efficiency of the lighting equipment they are associated with; 
eliminating the dazzlement effect due, in case of the traditional 
reflectors, to the absence of a bulb shielding. 
But such light shield-reflectors cannot be used with satisfactory results 
in case of horizontal-axis lighting equipment. Such lighting equipment has 
the advantage of being particularly suitable for wall mounting, with, in 
most cases, the use of support structures being avoided. 
The purpose of the present invention consists in providing a reflector 
which is of the light shield type, and can be simultaneously associated 
with a lighting equipment of horizontal type. 
Such purpose is achieved by a light shield-reflector for a lighting 
implement comprising a substantially tubular base equipped with a first 
end and with a second end, and destined to be mounted in such a way as to 
surround the socket shell engaged by the relevant bulb of the lighting 
implement, with the first end of said base being associated with a 
fastening flange, the second end of said base being associated with a 
reflector element of multiple type, wherein the main axes of the basis, of 
the reflector element, of the socket shell and of the bulb are coincident 
with the main axis of the same implement, with said axis being also 
perpendicular to said fastening flange, characterized in that the 
reflector element of multiple type is constituted by a set of superimposed 
wings spaced apart from each other, whose structure shows a substantially 
"U"-shaped plan, and a parabolic cross-section. 
The advantages achieved by the use of a reflector according to the present 
invention consist essentially in that a lighting implement can be 
obtained, which simultaneously offers the advantages of a vertical-axis 
lighting equipment with a reflector of light-shield type, and those of a 
horizontal-axis implement, but obviating the drawbacks of both equipment 
types. 
The invention is disclosed in greater detail in the following disclosure, 
with the aid of the drawings which represent an example of practical 
embodiment thereof.

Referring to the above cited figures, the light shield-reflector of the 
invention, generally indicated by the reference numeral 1 comprises a base 
2, containing a bulb and a relevant socket shell (not shown) and a 
reflector element of light shield type 3. 
The base 2 is formed, in its turn, by a case 4 having a cylindrical 
structure, and a sleeve 5, also having a cylindrical structure, mutually 
connected in correspondence of one of their ends. 
The other end of the case 4 is associated with a circular flange 6 provided 
with through-bores 7 for fastening in its end position the relevant 
lighting equipment, which usually takes place on a vertical surface (not 
shown in the drawings). 
The sleeve 5 has on its side surface pairs of through-bores 8, whose 
function will be evident in the following. 
The reflector element of light-shield type 3 is of the multiple type, and 
comprises a set of essentially "U"-shaped wings indicated by the reference 
numerals from 11 to 15. 
Each wing, excluding the wing indicated by the reference numeral 11, better 
disclosed in the following, is therefore provided with a pair of parallel 
arms 10 radiused at an end, whilst the non-connected ends are provided 
with a pair of bores 8A corresponding to the pairs of bores 8 provided on 
the sleeve 5. Said couples of bores 8 and 8A are destined to be jointly 
engaged by fastening means (e.g., rivets) (not shown in the figures). 
The cross-section of the parallel arms 10 has a parabolic outline. 
Each pair of parallel arms 10 of each wing 12-15 results hence to be 
associated with a parabola of a different equation, according to the 
position of the couple of arms relatively to the light source constituted 
by a bulb (not shown in the figures). 
The wing indicated by the reference number 11, which is located at the 
opposite end relatively to the direction of the light flux exiting the 
reflector element 3, is constituted by a plate having a substantially 
ellipsoidal plan, and an also parabolic cross-section. 
When the light shield-reflector 1 is assembled with the remaining elements 
of the lighting implement, the main axis of the base 2, the main axis of 
the reflector element 3, the main axis of the socket shell and the main 
axis of the bulb coincide with a main axis 16 of the lighting implement, 
which is perpendicular to the flange 6. 
In operation, the light emitted by the bulb is reflected by the surfaces of 
the reflector element 3 which are opposite to it, addressing the light 
flux in such a way as to form a light cone with the axis 17 perpendicular 
to the main axis 16 of the lighting implement, and which diffuses also by 
passing through the space existing between two adjacent wings of wings 
11-15.